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EP1088778B1 - Feed table - Google Patents

Feed table Download PDF

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Publication number
EP1088778B1
EP1088778B1 EP00118358A EP00118358A EP1088778B1 EP 1088778 B1 EP1088778 B1 EP 1088778B1 EP 00118358 A EP00118358 A EP 00118358A EP 00118358 A EP00118358 A EP 00118358A EP 1088778 B1 EP1088778 B1 EP 1088778B1
Authority
EP
European Patent Office
Prior art keywords
vacuum
sheet
box
transverse
suction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP00118358A
Other languages
German (de)
French (fr)
Other versions
EP1088778A2 (en
EP1088778A3 (en
Inventor
Wolfgang Matthäus
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
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 MAN Roland Druckmaschinen AG filed Critical MAN Roland Druckmaschinen AG
Publication of EP1088778A2 publication Critical patent/EP1088778A2/en
Publication of EP1088778A3 publication Critical patent/EP1088778A3/en
Application granted granted Critical
Publication of EP1088778B1 publication Critical patent/EP1088778B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B65H11/00—Feed tables
    • B65H11/002—Feed tables incorporating transport belts
    • B65H11/005—Suction 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
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/24—Feeding articles in overlapping streams, i.e. by separation of articles from a 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
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/443—Moving, forwarding, guiding material by acting on surface of handled material
    • B65H2301/4432—Moving, forwarding, guiding material by acting on surface of handled material by means having an operating surface contacting only one face of the material, e.g. roller
    • B65H2301/44322—Moving, forwarding, guiding material by acting on surface of handled material by means having an operating surface contacting only one face of the material, e.g. roller belt
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/44—Moving, forwarding, guiding material
    • B65H2301/443—Moving, forwarding, guiding material by acting on surface of handled material
    • B65H2301/4433—Moving, forwarding, guiding material by acting on surface of handled material by means holding the material
    • B65H2301/44336—Moving, forwarding, guiding material by acting on surface of handled material by means holding the material using suction forces
    • 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
    • B65H2406/32—Suction belts
    • B65H2406/322—Suction distributing means
    • B65H2406/3221—Suction distributing means for variable distribution in the direction of transport
    • 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
    • B65H2406/32—Suction belts
    • B65H2406/322—Suction distributing means
    • B65H2406/3222—Suction distributing means switchable suction elements
    • 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
    • B65H2406/36—Means for producing, distributing or controlling suction
    • B65H2406/363—Means for producing, distributing or controlling suction adjusting or controlling distribution of vacuum for a plurality of suction means

Definitions

  • the invention relates to a device according to the preamble of claim 1.
  • Suction belt tables exist essentially of at least one box-shaped cavity, which at its Top is provided with openings, suction tapes through these openings be performed. Suction belts are also flat, apertured Conveyor belts.
  • a suction air supply is usually arranged on the underside of the belt table. This can be designed as a simple fan or as a fan connection.
  • the suction belts are one Shaft driven and held in a straight position by a clamping device.
  • the suction belts are sprung Tensioners tensioned.
  • the facility is below the suction belt table arranged and inaccessible to use. It is also in front all relatively expensive because it may be required for sheet transport can hold the arch in certain table areas with increased force. Therefore the suction belts can slip.
  • a suction chamber to separate by folding from a front part of the suction belt table.
  • the front part of the suction belt table is the same Volume flow of suction air acts like the main part. Only through the Controlling the overlying bow, the flap is moved within the chamber and redirects a stream of suction air to the front part. The supply of the front part of the chamber with suction air is therefore irregular.
  • DE 44 16 286 A1 describes a device for adapting the Vacuum in a suction belt feed table of a sheet feeder known.
  • the suction belt feed table is three in a row in the direction of sheet travel arranged suction chambers equipped and has a device for separate supply of suction air from the single suction air supply to all Suction chambers or only the first and third suction chambers.
  • the middle suction chamber can be connected to the environment for the second case and thus has atmospheric pressure.
  • the aim of the invention is therefore to improve the suction belt table so that the Sheet transport can be designed safely in a simple manner.
  • the object of the invention is to provide a generic suction belt table to further develop that the sheet transport in any operating situation, both on
  • Table design as well as at the table end can be designed and readjusted safely can.
  • the sheet guidance over a suction belt table can be influenced in three areas, ie from the entry of the sheet on the suction belt table to the discharge to the sheet processing machine.
  • the control of the suction air supply can be selected differently for different operating states.
  • the suction air control for the front and rear table areas is coupled and controllable in such a way that the suction air can take place separately, jointly evenly or jointly differently.
  • the suction of the central part of the suction belt table can be carried out separately.
  • the middle part of the suction belt table is acted upon directly with suction air by means of a fan. Further preferred embodiments result from the subclaims.
  • a suction belt table 1 is shown, between a feeder 2 and a sheet processing machine is arranged. Via the suction belt table 1 an undercurrent arc stream B is guided. This arc current B will generated on the feeder 2 by separation and in the sheet processing Machine further processed.
  • a fan 3 is arranged on the suction belt table 1 generates a suction air flow through the box-shaped suction belt table 1.
  • two suction air lines 4, 5 are connected to the suction belt table 1, which are connected to a suction air generator 6.
  • the suction air lines 4, 5 are connected with additional cavities in the suction belt table 1.
  • the suction belt table 1 is shown in more detail in FIG. To the Suction belt table 1, suction belts 7 are guided, which guide 8 and Drive rollers 9 and tension rollers 10 are guided.
  • the suction belt table 1 itself is formed by a main suction box 11 to which the fan 3 connected.
  • a ventilation ring 12 is provided above the fan 3.
  • both transverse boxes 13, 14 are connected via the suction air lines 4, 5 a connector 15 coupled. At the connector 15 is in turn the suction air generator 6 connected.
  • Ventilation ring 12 In the suction air lines 4, 5 between the transverse boxes 13, 14 and Connector 15 can ventilation elements 17, 18 according to the Ventilation ring 12 may be used, as shown in Figure 2.
  • FIG 3 the detail of the connector 15 is shown in more detail.
  • the connector 15 is in the lower area of the suction air generator 6 via a further suction air line 16 connected, and in the pipe ends branching off the two suction air lines 4, 5 connected to the transverse boxes 13, 14.
  • in the Connector 15 is in the area between the suction air lines 4, 5 Control valve 19 arranged.
  • the control flap 19 is adjustable in three positions. Here, either one suction air line 4 or the other suction air line 5 closed or both suction air lines 4, 5 are opened.
  • the proportion of suction air on the two transverse boxes 13, 14 can be different are distributed when the arrangement of the control valve 19 in Art a throttle valve is executed.
  • a vacuum is applied to the main suction box 11 as a standard via the fan 3.
  • a situation can arise, for example, depending on the rigidity of the sheet material when a sheet runs in at the beginning of the suction belt table 1, in which the sheet is not properly sucked in. This is especially the case when the conveying plane of the suction belt table 1 is inclined relatively strongly against the conveying plane on the sheet feeder 2. Since the sheet must then be guided around a kink, it can be very advantageous to set a higher negative pressure in order to be able to suck the sheet in more strongly at the entry point.
  • the transverse box 13 is more strongly supplied with suction air or with a higher vacuum at the front end of the suction belt table 1 in the direction of sheet travel.
  • This is possible by means of the control flap 19 in the connecting piece 15.
  • the control flap 19 is adjusted in the direction of the suction air line 5, which supplies the cross box 14 and thus opens the suction air line 4 to the cross box 13 more.
  • the ventilation element 17 in the suction air line 4 is also possible to adjust the ventilation element 17 in the suction air line 4 to influence the negative pressure in the transverse box 13.
  • An adjustable opening for the defined suction of ambient air is created via the ventilation element 17. Since the transverse box 13 is constantly covered by sheets from its top in continuous operation, this represents a good control option.
  • an increased pressure may be required in the outlet area of the suction belt table 1 in certain operating states.
  • This in turn can also be achieved by switching in the connector 15.
  • the transverse box 14 is more strongly supplied with suction air or with a higher vacuum at the rear end of the suction belt table 1 in the direction of sheet travel.
  • the control flap 19 is adjusted in the direction of the suction air line 4, which supplies the cross box 13 and thus the suction air line 5 to the cross box 14 is opened more.
  • An adjustable opening for the defined suction of ambient air is created via the ventilation element 18. Since the transverse box 14 is constantly covered by arches from its upper side in continuous operation, this also represents a good control option here.
  • the negative pressure in the cross box 14 at the outlet of the suction belt table 1 can be switched off when the first sheets are transported to the suction belt table 1, as a result of which the full suction power of the suction air generator 6 is applied to the cross box 13 in the inlet area of the suction belt table 1.
  • the suction belt table 1 is still largely empty and the suction air can be used in full on the inlet side, so that the first sheets can also be properly fed to the suction belt table 1.
  • no suction air is conducted as the cross box 14 on the outlet side, since it would be ineffective at the open suction belts 7 anyway.
  • the negative pressure in the transverse box 14 at the outlet of the suction belt table 1 can also be switched off when the last sheets run over the suction belt table 1. This is important so that they can be properly aligned.
  • the next sheet is covered by the next sheet in the shingling from below relative to the suction belts 7 and thus automatically released at the end of the suction belt table 1 for alignment in the contact area of the sheet-processing machine. This is no longer the case when the last sheet is fed into the sheet processing machine. Therefore, the suction air should be turned off at the cross box 14.
  • the suction air which in turn is directed to the first transverse box 13, has no effect on the suction belts 7 that are open at this point in time and cannot produce a malfunction.
  • the elements for air control can be provided to be remotely controllable and with the control of the sheet feeder 2 or Sheet processing machine or to connect both. This allows depict an automated procedure in which everything for the operation of the Operating states occurring in the sheet-processing machine can be mapped.
  • the facilities for air supply i.e. the fan 3 and the suction air generator 6, as well as to the provided regulating devices i.e. on the ventilation ring 12 before Main suction box 11 and on the ventilation elements 17, 18 in front of the cross boxes 13, 14 a favorable for the continuous operation of the suction belt table 1 Basic setting can be made.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

The arrangement has a suction belt table (1) receiving sheets from one or more conveyor belts (7), a main suction chamber (11) and transverse suction chambers (13,14) near input and output sides. The transverse suction chambers are controlled by a common vacuum generator (6). The main suction chamber is connected to a separate fan (3). The suction chambers cover all conveyor belts simultaneously in the transverse direction to transport sheets. Independent claims are also included for the following: a method of operating a suction tape table.

Description

Die Erfindung betrifft eine Vorrichtung nach dem Oberbegriff des Anspruchs 1.The invention relates to a device according to the preamble of claim 1.

Zur Zuführung von einzelnen Bogen zu bogenverarbeitenden Maschinen ist nach der Vereinzelung der Bogens von einem Bogenstapel der Transport über eine gewisse Strecke bis zu einem Anlagebereich der bogenverarbeitenden Maschine erforderlich. Üblicherweise werden die Bogen in einem Schuppenstrom zur bogenverarbeitenden Maschine transportiert, um eine hohe Verarbeitungsfrequenz erreichen zu können. Möglich ist aber auch eine Einzelbogenzufuhr. Beim Transport der Bogen von dem Bogenanleger zur bogenverarbeitenden Maschine sind sogenannte Bändertische im Einsatz, die es erlauben, einen Strom von Bogen, die gegeneinander unterschuppt sind, sicher zu führen. Besonders vorteilhaft sind hierbei sogenannte Saugbändertische. Saugbändertische bestehen im wesentlichen aus wenigstens einem kastenförmigen Hohlraum, der an seiner Oberseite mit Öffnungen versehen ist, wobei Saugbänder über diese Öffnungen geführt werden. Saugbänder sind ebenfalls mit Öffnungen versehene flache Transportbänder. Zum Festhalten der Bogen an den Saugbändern wird in der Regel an der Unterseite des Bändertisches eine Saugluftzufuhr angeordnet. Diese kann als einfacher Lüfter oder als Gebläseanschluß ausgeführt sein. Beim Transport der Bogen über den Saugbändertisch werden die Saugbänder von einer Welle angetrieben und von einer Spannvorrichtung in gerader Lage gehalten. Diese bekannten Saugbändertische weisen hierbei verschiedene Nachteile auf. For feeding single sheets to sheet-processing machines is according to the separation of the sheets from a sheet stack the transport over a certain distance to a plant area of the sheet processing machine required. The sheets are usually turned into a stream of shingles sheet processing machine transported to a high processing frequency to be able to achieve. A single sheet feed is also possible. At the Transport of the sheets from the sheet feeder to the sheet processing machine So called belt tables are in use, which allow a flow of To safely guide sheets that are shingled against each other. Especially So-called suction belt tables are advantageous here. Suction belt tables exist essentially of at least one box-shaped cavity, which at its Top is provided with openings, suction tapes through these openings be performed. Suction belts are also flat, apertured Conveyor belts. To hold the sheet on the suction belts in the A suction air supply is usually arranged on the underside of the belt table. This can be designed as a simple fan or as a fan connection. At the Transporting the sheets over the suction belt table, the suction belts are one Shaft driven and held in a straight position by a clamping device. These known suction belt tables have various disadvantages.

In den bekannten Saugbändertischen werden die Saugbänder mittels angefederter Spannrollen gespannt. Die Einrichtung ist unterhalb des Saugbändertisches angeordnet und ungünstig für die Bedienung erreichbar. Außerdem ist sie vor allem deshalb relativ aufwendig, weil es beim Bogentransport erforderlich sein kann, die Bogen in bestimmten Tischbereichen mit erhöhter Kraft zu halten. Daher können die Saugbänder einem Schlupf unterliegen .In the known suction belt tables, the suction belts are sprung Tensioners tensioned. The facility is below the suction belt table arranged and inaccessible to use. It is also in front all relatively expensive because it may be required for sheet transport can hold the arch in certain table areas with increased force. Therefore the suction belts can slip.

In einer derartigen Vorrichtung ist es beispielsweise bekannt, eine Saugkammer durch Klappen von einem vorderen Teil des Saugbändertisches abzutrennen. Hierbei wird der vordere Teil des Saugbändertisches von dem gleichen Volumenstrom an Saugluft beaufschlagt wie der Hauptteil. Lediglich durch die Steuerung der aufliegenden Bogen wird die Klappe innerhalb der Kammer bewegt und leitet einen Saugluftstrom in den vorderen Teil um. Die Versorgung des vorderen Kammerteiles mit Saugluft ist damit unregelmäßig.In such a device it is known, for example, a suction chamber to separate by folding from a front part of the suction belt table. Here, the front part of the suction belt table is the same Volume flow of suction air acts like the main part. Only through the Controlling the overlying bow, the flap is moved within the chamber and redirects a stream of suction air to the front part. The supply of the front part of the chamber with suction air is therefore irregular.

Nach der DE 38 38 078 A1 ist es in einem weiteren Saugbändertisch bekannt, die Kammer des Saugbändertisches in zwei Teile zu unterteilen. Die Versorgung mit Saugluft erfolgt dabei getrennt für eine hintere und eine vordere Kammer. Die Anordnung des Saugbändertisches in dieser Form weist Nachteile bezüglich der Steuerung der Luftversorgung für die verschiedenen Bereiche des Saugbändertisches auf. Hierbei ist es insbesondere erforderlich, am Anfang des Saugbändertisches und am Ende des Saugbändertisches unterschiedliche Verhältnisse zu erzeugen, um die Bogen in jeder Transportlage sicher handhaben zu können.According to DE 38 38 078 A1, it is known in a further suction belt table that Divide the chamber of the vacuum belt table into two parts. The supply with Suction air takes place separately for a rear and a front chamber. The Arranging the suction belt table in this form has disadvantages with regard to Control of the air supply for the different areas of the Suction belt table on. Here it is particularly necessary to start at Suction belt table and different at the end of the suction belt table To create conditions to handle the sheets safely in any transport position to be able to.

Weiterhin ist aus der DE 44 16 286 A1 eine Vorrichtung zur Anpassung des Unterdruckes in einem Saugbandzuführtisch eines Bogenanlegers bekannt. Der Saugbandzuführtisch ist mit drei in Bogenlaufrichtung hintereinander angeordneten Saugkammern ausgerüstet und weist eine Vorrichtung zur getrennten Zufuhr von Saugluft von der einzigen Saugluftzufuhr zu allen Saugkammern oder nur der ersten und der dritten Saugkammer auf. Die mittlere Saugkammer ist für den zweiten Fall mit der Umgebung verbindbar und weist damit Atmosphärendruck auf.Furthermore, DE 44 16 286 A1 describes a device for adapting the Vacuum in a suction belt feed table of a sheet feeder known. The suction belt feed table is three in a row in the direction of sheet travel arranged suction chambers equipped and has a device for separate supply of suction air from the single suction air supply to all Suction chambers or only the first and third suction chambers. The middle suction chamber can be connected to the environment for the second case and thus has atmospheric pressure.

Ziel der Erfindung ist es daher, den Saugbändertisch so zu verbessern, daß der Bogentransport auf einfache Weise sicher gestaltet werden kann.The aim of the invention is therefore to improve the suction belt table so that the Sheet transport can be designed safely in a simple manner.

Aufgabe der Erfindung ist es, einen gattungsgemäßen Saugbändertisch derart weiterzuentwickeln, daß der Bogentransport in jeder Betriebslage, sowohl am The object of the invention is to provide a generic suction belt table to further develop that the sheet transport in any operating situation, both on

Tischanfang als auch am Tischende sicher gestaltet und nachjustiert werden kann.Table design as well as at the table end can be designed and readjusted safely can.

Die Lösung dieser Aufgabe gestaltet sich nach dem Anspruch 1.This object is achieved according to claim 1.

Der Vorteil der geschilderten Lösung ist, daß die Bogenführung über einem Saugbändertisch in drei Bereichen dezidiert beeinflußbar ist, d.h. vom Einlauf des Bogens auf dem Saugbändertisch bis zum Ablauf zur bogenverarbeitenden Maschine.
Die Steuerung der Saugluftzufuhr kann dabei für verschiedene Betriebszustände unterschiedlich gewählt werden.
In bevorzugter Ausführungsform ist dabei die Saugluftsteuerung für die vorderen und hinteren Tischbereiche gekoppelt und derart steuerbar, daß die Saugluft getrennt, gemeinsam gleichmäßig oder auch gemeinsam unterschiedlich erfolgen kann.
Weiterhin ist in bevorzugter Ausführungsform die Saugluftbeaufschlagung des Mittelteiles des Saugbändertisches getrennt ausführbar. In bevorzugter Ausführungsform wird der Mittelteil des Saugbändertisches mittels eines Lüfters direkt mit Saugluft beaufschlagt.
Weitere bevorzugte Ausführungsformen ergeben sich aus den Unteransprüchen.The advantage of the solution described is that the sheet guidance over a suction belt table can be influenced in three areas, ie from the entry of the sheet on the suction belt table to the discharge to the sheet processing machine.
The control of the suction air supply can be selected differently for different operating states.
In a preferred embodiment, the suction air control for the front and rear table areas is coupled and controllable in such a way that the suction air can take place separately, jointly evenly or jointly differently.
Furthermore, in a preferred embodiment, the suction of the central part of the suction belt table can be carried out separately. In a preferred embodiment, the middle part of the suction belt table is acted upon directly with suction air by means of a fan.
Further preferred embodiments result from the subclaims.

Im folgenden wird anhand eines Ausführungsbeispieles die Erfindung näher erläutert.The invention will be described in more detail below using an exemplary embodiment explained.

Darin zeigt:

Figur 1
eine Übersicht eines Saugbändertisches,
Figur 2
eine detaillierte Darstellung des Saugbändertisches und der Luftführungen und
Figur 3
ein Detail aus der Luftführung.
It shows:
Figure 1
an overview of a suction belt table,
Figure 2
a detailed representation of the suction belt table and the air ducts and
Figure 3
a detail from the air duct.

In Figur 1 ist ein Saugbändertisch 1 gezeigt, der zwischen einem Anleger 2 und einer bogenverarbeitenden Maschine angeordnet ist. Über den Saugbändertisch 1 wird ein unterschuppt liegender Bogenstrom B geführt. Dieser Bogenstrom B wird auf dem Anleger 2 durch Vereinzelung erzeugt und in der bogenverarbeitenden Maschine weiterverarbeitet. Am Saugbändertisch 1 ist ein Lüfter 3 angeordnet, der einen Saugluftstrom durch den kastenförmigen Saugbändertisch 1 erzeugt. Weiterhin sind am Saugbändertisch 1 zwei Saugluftleitungen 4, 5 angeschlossen, die mit einem Sauglufterzeuger 6 verbunden sind. Die Saugluftleitungen 4, 5 sind mit zusätzlichen Hohlräumen im Saugbändertisch 1 verbunden.In Figure 1, a suction belt table 1 is shown, between a feeder 2 and a sheet processing machine is arranged. Via the suction belt table 1 an undercurrent arc stream B is guided. This arc current B will generated on the feeder 2 by separation and in the sheet processing Machine further processed. A fan 3 is arranged on the suction belt table 1 generates a suction air flow through the box-shaped suction belt table 1. Furthermore, two suction air lines 4, 5 are connected to the suction belt table 1, which are connected to a suction air generator 6. The suction air lines 4, 5 are connected with additional cavities in the suction belt table 1.

In Figur 2 ist der Saugbändertisch 1 detaillierter dargestellt. Um den Saugbändertisch 1 werden Saugbänder 7 geführt, die über Führungs- 8 und Antriebswalzen 9 sowie Spannrollen 10 geführt werden. Der Saugbändertisch 1 selbst ist durch einen Hauptsaugkasten 11 gebildet, an den den Lüfter 3 angeschlossen ist. Oberhalb des Lüfters 3 ist ein Belüftungsring 12 vorgesehen. Weiterhin sind an dem Saugbändertisch 1 im Einlaufbereich ein schmaler Querkasten 13 und im Auslaufbereich ein weiterer schmaler Querkasten 14 vorgesehen. Beide Querkästen 13, 14 sind über die Saugluftleitungen 4, 5 mit einem Verbindungsstück 15 gekoppelt. An dem Verbindungsstück 15 wiederum ist der Sauglufterzeuger 6 angeschlossen.The suction belt table 1 is shown in more detail in FIG. To the Suction belt table 1, suction belts 7 are guided, which guide 8 and Drive rollers 9 and tension rollers 10 are guided. The suction belt table 1 itself is formed by a main suction box 11 to which the fan 3 connected. A ventilation ring 12 is provided above the fan 3. Furthermore, there is a narrower one on the suction belt table 1 in the inlet area Cross box 13 and another narrow cross box 14 in the outlet area intended. Both transverse boxes 13, 14 are connected via the suction air lines 4, 5 a connector 15 coupled. At the connector 15 is in turn the suction air generator 6 connected.

In die Saugluftleitungen 4, 5 zwischen den Querkästen 13, 14 und dem Verbindungsstück 15 können Belüftungselemente 17, 18 entsprechend dem Belüftungsring 12 eingesetzt sein, wie dies in Figur 2 dargestellt ist. In the suction air lines 4, 5 between the transverse boxes 13, 14 and Connector 15 can ventilation elements 17, 18 according to the Ventilation ring 12 may be used, as shown in Figure 2.

In Figur 3 ist das Detail des Verbindungsstückes 15 näher dargestellt. Hierbei ist im unteren Bereich der Sauglufterzeuger 6 über eine weitere Saugluftleitung 16 angeschlossen, und in den nach oben abzweigenden Rohrendungen werden die beiden Saugluftleitungen 4, 5 zu den Querkästen 13, 14 angeschlossen. Im Verbindungstück 15 ist im Bereich zwischen den Saugluftleitungen 4, 5 eine Steuerklappe 19 angeordnet. Die Steuerklappe 19 ist in drei Positionen einstellbar. Hierbei wird entweder die eine Saugluftleitung 4 oder die andere Saugluftleitung 5 verschlossen oder beide Saugluftleitungen 4, 5 werden geöffnet. Darüber hinaus kann der Anteil der Saugluft auf die beiden Querkästen 13, 14 unterschiedlich verteilt zugeleitet werden, wenn die Anordnung der Steuerklappe 19 in der Art einer Drosselklappe ausgeführt wird.In Figure 3, the detail of the connector 15 is shown in more detail. Here is in the lower area of the suction air generator 6 via a further suction air line 16 connected, and in the pipe ends branching off the two suction air lines 4, 5 connected to the transverse boxes 13, 14. in the Connector 15 is in the area between the suction air lines 4, 5 Control valve 19 arranged. The control flap 19 is adjustable in three positions. Here, either one suction air line 4 or the other suction air line 5 closed or both suction air lines 4, 5 are opened. Furthermore the proportion of suction air on the two transverse boxes 13, 14 can be different are distributed when the arrangement of the control valve 19 in Art a throttle valve is executed.

Beim Betrieb des Saugbändertisches 1 wird standardmäßig über den Lüfter 3 auf den Hauptsaugkasten 11 ein Unterdruck aufgebracht. Bei der Zuführung von Bogen zum Saugbändertisch 1 kann beispielsweise in Abhängigkeit von der Steifigkeit des Bogenstoffes beim Einlauf eines Bogens am Beginn des Saugbändertisches 1 eine Situation entstehen, bei der der Bogen nicht ordnungsgemäß angesaugt wird. Dies ist vor allem dann der Fall, wenn die Förderebene des Saugbändertisches 1 relativ stark gegen die Förderebene am Bogenanleger 2 geneigt ist. Da der Bogen dann um eine Knickstelle herumgeführt werden muß, kann es sehr vorteilhaft sein, einen höheren Unterdruck einzustellen, um die Bogen am Einlaufpunkt stärker ansaugen zu können. Zu diesem Zweck wird der Querkasten 13 am in Bogenlaufrichtung vorderen Ende des Saugbändertisches 1 stärker mit Saugluft bzw. mit einem höheren Unterdruck versorgt. Dies ist mittels der Steuerklappe 19 im Verbindungsstück 15 möglich. Hierzu wird die Steuerklappe 19 in Richtung der Saugluftleitung 5 verstellt, die den Querkasten 14 versorgt und damit die Saugluftleitung 4 zum Querkasten 13 mehr geöffnet. Wenn der Bogenstrom dann gebildet ist, werden die Folgebogen noch zusätzlich durch den jeweils auf deren vorderem Ende aufliegenden vorauslaufenden Bogen umgelenkt.
Gleichfalls ist es möglich, das Belüftungselement 17 in der Saugluftleitung 4 zur Beeinflussung des Unterdruckes im Querkasten 13 zu verstellen. Dabei wird über das Belüftungselement 17 eine einstellbare Öffnung zur definierten Ansaugung von Umgebungsluft geschaffen. Da der Querkasten 13 im Dauerbetrieb ständig durch Bogen von seiner Oberseite abgedeckt ist, stellt dies eine gute Regelungsmöglichkeit dar.When the suction belt table 1 is operating, a vacuum is applied to the main suction box 11 as a standard via the fan 3. When feeding sheets to the suction belt table 1, a situation can arise, for example, depending on the rigidity of the sheet material when a sheet runs in at the beginning of the suction belt table 1, in which the sheet is not properly sucked in. This is especially the case when the conveying plane of the suction belt table 1 is inclined relatively strongly against the conveying plane on the sheet feeder 2. Since the sheet must then be guided around a kink, it can be very advantageous to set a higher negative pressure in order to be able to suck the sheet in more strongly at the entry point. For this purpose, the transverse box 13 is more strongly supplied with suction air or with a higher vacuum at the front end of the suction belt table 1 in the direction of sheet travel. This is possible by means of the control flap 19 in the connecting piece 15. For this purpose, the control flap 19 is adjusted in the direction of the suction air line 5, which supplies the cross box 14 and thus opens the suction air line 4 to the cross box 13 more. When the arc stream is then formed, the following sheets are additionally deflected by the leading sheet lying on their front end.
It is also possible to adjust the ventilation element 17 in the suction air line 4 to influence the negative pressure in the transverse box 13. An adjustable opening for the defined suction of ambient air is created via the ventilation element 17. Since the transverse box 13 is constantly covered by sheets from its top in continuous operation, this represents a good control option.

Weiterhin kann im Auslaufbereich des Saugbändertisches 1 in bestimmten Betriebszuständen ein erhöhter Druck erforderlich sein. Dies wiederum kann durch die Umschaltung im Verbindungsstück 15 ebenfalls erreicht werden. Zu diesem Zweck wird der Querkasten 14 am in Bogenlaufrichtung hinteren Ende des Saugbändertisches 1 stärker mit Saugluft bzw. mit einem höheren Unterdruck versorgt. Dies ist mittels der Steuerklappe 19 im Verbindungsstück 15 möglich. Hierzu wird die Steuerklappe 19 in Richtung der Saugluftleitung 4 verstellt, die den Querkasten 13 versorgt und damit die Saugluftleitung 5 zum Querkasten 14 mehr geöffnet.
Gleichfalls ist es möglich, das Belüftungselement 18 in der Saugluftleitung 5 zur Beeinflussung des Unterdruckes im Querkasten 14 zu verstellen. Dabei wird über das Belüftungselement 18 eine einstellbare Öffnung zur definierten Ansaugung von Umgebungsluft geschaffen. Da der Querkasten 14 im Dauerbetrieb ständig durch Bogen von seiner Oberseite abgedeckt ist, stellt dies auch hier eine gute Regelungsmöglichkeit dar.Furthermore, an increased pressure may be required in the outlet area of the suction belt table 1 in certain operating states. This in turn can also be achieved by switching in the connector 15. For this purpose, the transverse box 14 is more strongly supplied with suction air or with a higher vacuum at the rear end of the suction belt table 1 in the direction of sheet travel. This is possible by means of the control flap 19 in the connecting piece 15. For this purpose, the control flap 19 is adjusted in the direction of the suction air line 4, which supplies the cross box 13 and thus the suction air line 5 to the cross box 14 is opened more.
It is also possible to adjust the ventilation element 18 in the suction air line 5 to influence the negative pressure in the transverse box 14. An adjustable opening for the defined suction of ambient air is created via the ventilation element 18. Since the transverse box 14 is constantly covered by arches from its upper side in continuous operation, this also represents a good control option here.

Andere Betriebszustände ergeben sich beim Anfahren der bogenverarbeitenden Maschine und am Ende eine Verarbeitungsvorganges.
Dazu kann der Unterdruck im Querkasten 14 am Auslauf des Saugbändertisches 1 abgeschaltet werden, wenn die ersten Bogen auf den Saugbändertisch 1 transportiert werden, wodurch dann die volle Saugleistung des Sauglufterzeugers 6 am Querkasten 13 im Einlaufbereich des Saugbändertisches 1 anliegt. In diesem Zustand ist der Saugbändertisch 1 noch weitgehend leer und die Saugluft kann in vollem Umfang auf der Einlaufseite verwendet werden, damit auch die ersten Bogen ordnungsgemäß dem Saugbändertisch 1 zugeführt werden können. In diesem Fall wird als auf den auslaufseitigen Querkasten 14 keine Saugluft geleitete, da sie an den offenen Saugbändern 7 sowieso wirkungslos wäre. Weiterhin kann der Unterdruck im Querkasten 14 am Auslauf des Saugbändertisches 1 auch abgeschaltet werden, wenn die letzten Bogen über den Saugbändertisch 1 laufen. Dies ist von Bedeutung, damit diese ordnungsgemäß ausgerichtet werden können. Im Normalbetrieb wird der vordere Bogen vom nächstfolgenden Bogen im Rahmen der Unterschuppung von unten gegenüber den Saugbändern 7 abgedeckt und damit am Ende des Saugbändertisches 1 für die Ausrichtung im Anlagebereich der bogenverarbeitenden Maschine automatisch freigegeben. Dies ist beim Einlaufen des letzten Bogens zur bogenverarbeitenden Maschine nicht mehr der Fall. Daher soll dann die Saugluft am Querkasten 14 abgestellt werden. Die dann wiederum auf den ersten Querkasten 13 geleitete Saugluft ist an den zu diesem Zeitpunkt offenen Saugbändern 7 wirkungslos und kann keine Fehlfunktion erzeugen.Other operating conditions arise when starting up the sheet-processing machine and at the end of a processing operation.
For this purpose, the negative pressure in the cross box 14 at the outlet of the suction belt table 1 can be switched off when the first sheets are transported to the suction belt table 1, as a result of which the full suction power of the suction air generator 6 is applied to the cross box 13 in the inlet area of the suction belt table 1. In this state, the suction belt table 1 is still largely empty and the suction air can be used in full on the inlet side, so that the first sheets can also be properly fed to the suction belt table 1. In this case, no suction air is conducted as the cross box 14 on the outlet side, since it would be ineffective at the open suction belts 7 anyway. Furthermore, the negative pressure in the transverse box 14 at the outlet of the suction belt table 1 can also be switched off when the last sheets run over the suction belt table 1. This is important so that they can be properly aligned. In normal operation, the next sheet is covered by the next sheet in the shingling from below relative to the suction belts 7 and thus automatically released at the end of the suction belt table 1 for alignment in the contact area of the sheet-processing machine. This is no longer the case when the last sheet is fed into the sheet processing machine. Therefore, the suction air should be turned off at the cross box 14. The suction air, which in turn is directed to the first transverse box 13, has no effect on the suction belts 7 that are open at this point in time and cannot produce a malfunction.

Schließlich ist im Normalbetrieb des Saugbändertisches 1 auch von Bedeutung, daß im Einlaufbereich und im Auslaufbereich unterschiedlich Ansaugkräfte auf den Bogen erforderlich sein können. Durch die beschriebene Abdeckung des Bogens in unterschuppter Lage kann es vorkommen, daß durch die verringerte Ansaugfläche die Haltekraft der Saugbänder 7 auf den Bogen beim Einlaufen in den Anlagebereich zu stark reduziert wird. Daher ist mittels der beschriebenen Vorrichtung eine Erhöhung des Unterdruckes auf den Querkasten 14 möglich, wodurch trotz verringerter Ansaugfläche die Haltekraft von den Saugbändem 7 auf den Bogen ausreichend hoch gehalten werden kann. Finally, in normal operation of the suction belt table 1, it is also important that different suction forces on the in the inlet area and in the outlet area Arch may be required. Through the described cover of the arch in a shingled situation it can happen that the reduced Suction area, the holding force of the suction tapes 7 on the sheet when entering the investment area is reduced too much. Therefore, by means of the described Device an increase in the negative pressure on the transverse box 14 is possible, whereby, despite the reduced suction area, the holding force from the suction belts 7 the arch can be kept high enough.

Insgesamt gesehen kann vorgesehen sein, die Elemente zur Luftsteuerung fernsteuerbar zu gestalten und mit der Steuerung des Bogenanlegers 2 oder der Bogen verarbeitenden Maschine oder mit beiden zu verbinden. Dadurch läßt sich ein automatisierter Verfahrensablauf abbilden, bei dem all für den Betrieb der Bogen verarbeitenden Maschine vorkommenden Betriebszustände abbildbar sind. Ausgehend von vorgegebenen, ggf. aus Versuchen im Zusammenhang mit bestimmten Bogenstoffen ermittelten Grunddaten kann daher an den Einrichtungen zur Luftversorgung, d.h. dem Lüfter 3 und dem Sauglufterzeuger 6, sowie an den vorgesehenen Reguliereinrichtungen d.h. an dem Belüftungsring 12 vor dem Hauptsaugkasten 11 und an den Belüftungselementen 17, 18 vor den Querkästen 13, 14 eine für den Dauerbetrieb des Saugbändertisches 1 günstige Grundeinstellung vorgenommen werden. Im Betrieb des Saugbändertisches 1 ist dann im einfachsten Fall allein über die steuerungstechnisch in den Maschinenbetrieb eingebundene Positionierung der Steuerklappe 19 die Beeinflussung der Bogentransporteigenschaften in den weiter oben beschriebenen Funktionsstufen des Saugbändertisches 1 möglich. Bei einer Ausgestaltung der Steuerklappe 19 mit Eigenschaften zur Regulierung des Luftdurchsatzes sind weitere Vereinfachungen und fernsteuerbare Anpassungen des Betriebsablaufes möglich. Seen as a whole, the elements for air control can be provided to be remotely controllable and with the control of the sheet feeder 2 or Sheet processing machine or to connect both. This allows depict an automated procedure in which everything for the operation of the Operating states occurring in the sheet-processing machine can be mapped. Based on predefined, possibly from experiments in connection with Basic data determined for certain sheet materials can therefore be sent to the facilities for air supply, i.e. the fan 3 and the suction air generator 6, as well as to the provided regulating devices i.e. on the ventilation ring 12 before Main suction box 11 and on the ventilation elements 17, 18 in front of the cross boxes 13, 14 a favorable for the continuous operation of the suction belt table 1 Basic setting can be made. In operation of the suction belt table 1 then in the simplest case solely via the control technology in the Machine operation integrated positioning of the control valve 19 die Influencing the sheet transport properties in those described above Function levels of the suction belt table 1 possible. In one embodiment of the Control flap 19 with properties for regulating the air flow are further simplifications and remotely controllable adjustments to the operating procedure possible.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Saugbändertischfeed table
22
Bogenanlegersheet feeder
33
LüfterFan
44
SaugluftleitungenSaugluftleitungen
55
SaugluftleitungenSaugluftleitungen
66
Sauglufterzeugervacuum generator
77
Saugbändersuction belts
88th
Führungswalzenguide rollers
99
Antriebswalzendrive rollers
1010
Spannrollentensioners
1111
HauptsaugkastenHauptsaugkasten
1212
Belüftungsringventilation ring
1313
Querkastencross box
1414
Querkastencross box
1515
Verbindungsstückjoint
1616
Saugluftleitungsuction air
1717
Belüftungselementventilation element
1818
Belüftungselementventilation element
1919
Steuerklappecontrol flap

Claims (6)

  1. Apparatus for the underlapped transport of sheets from a separating device into a sheet-processing machine, having a vacuum tape table (1) on which an overlapped stream of sheets can be guided by means of one or more transport tapes (7), the transport tapes (7) being led around the vacuum tape table (1) in a manner such that they can be driven and being provided with openings, having at least one device which generates a vacuum and which is assigned to at least one subregion of the vacuum tape table (1), there being provided in the vacuum tape table (1), as vacuum chambers carrying a vacuum, a main vacuum box (11) and, assigned to the latter, a first transverse box (13) arranged on the inlet side in the sheet running direction and a second transverse box (14) arranged on the outlet side in the sheet running direction, which are arranged such that their discharge-air side can in each case be coupled to the device producing the vacuum and on the feed-air side are connected to openings assigned to the conveying side of the vacuum tape table (1), over which the transport tapes (7) are guided, in such a way that, at the openings in the transport tapes (7) there is a vacuum assigned to their conveying side, by means of which vacuum sheets can be transported individually or as an underlapped sheet stream into the transport tapes (7), held by a force fit, and the vacuum chambers (11, 13, 14) cover all the transport tapes (7) simultaneously in the transverse direction with respect to the sheet transport direction, and it being possible to control the air supply to the main vacuum box (11),
    characterized in that
    the first transverse box (13) and the second transverse box (14) can be connected to a common vacuum generator (6) such that they can be controlled, and the main vacuum box (11) is connected to a dedicated fan (3) that is separated therefrom, and in that the vacuum generator (6) is connected by means of a common vacuum connection to an air control device connected to both transverse boxes (13, 14).
  2. Apparatus according to Claim 1, characterized in that the air control device is formed as a control flap (19) in such a way that the vacuum connections leading to the transverse boxes (13, 14) can be closed alternately or opened simultaneously.
  3. Apparatus according to Claim 2, characterized in that the control flap (19) is designed in the style of a throttling flap, in such a way that the flow of vacuum to the vacuum connections can be regulated alternately.
  4. Apparatus according to Claims 2 to 3, characterized in that the control flap (19) is provided with a controller for adjustment, in that the controller of the control flap (19) is connected to the controller of the sheet feeder (2) and/or the controller of the sheet-processing machine in such a way that the control flap (19) can be set differently, depending on the operating situations of starting the sheet supply to the vacuum tape table (1), continuous operation or ending the sheet supply to the sheet-processing machine.
  5. Apparatus according to Claims 1 to 4,
    characterized in that pressure increasing elements for separate control of the vacuum in each of the transverse boxes (13, 14) are arranged in the vacuum connections to the transverse boxes (13, 14).
  6. Method of operating an apparatus according to one or all of Claims 1 to 5, characterized in that
    at the start of operations, the vacuum generator (6) is connected only to the first transverse box (13) seen in the sheet running direction, in such a way that a maximum vacuum is applied to the transverse box (13),
    in that the fan (3) supplies the main vacuum box (11) with vacuum before the first sheet reaches the main vacuum box (11),
    in that, after the main vacuum box (11) has been covered fully by sheets, the vacuum in the main vacuum box (11) is reduced, depending on the printing material quality,
    in that, upon reaching the second transverse box (14) in the sheet running direction, the vacuum generator (6) is additionally connected to the second transverse box (14), in such a way that a vacuum is applied to both transverse boxes (13, 14), the vacuum on the two transverse boxes (13, 14) remaining capable of adjustment independently of each other,
    in that, when a processing pass is completed and the vacuum tape table (1) is running idly under control, after the last sheet has been transported away by the sheet feeder (2), the first transverse box (13) is isolated fully or largely from the vacuum supply of the vacuum generator (6), the vacuum level in the second transverse box (14) being maintained, and
    in that the vacuum supply to the second transverse box (14) is interrupted when the last sheet arrives in the feed region of the sheet-processing machine.
EP00118358A 1999-10-02 2000-08-24 Feed table Expired - Lifetime EP1088778B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19947554A DE19947554C2 (en) 1999-10-02 1999-10-02 feed table
DE19947554 1999-10-02

Publications (3)

Publication Number Publication Date
EP1088778A2 EP1088778A2 (en) 2001-04-04
EP1088778A3 EP1088778A3 (en) 2002-12-04
EP1088778B1 true EP1088778B1 (en) 2004-11-03

Family

ID=7924315

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00118358A Expired - Lifetime EP1088778B1 (en) 1999-10-02 2000-08-24 Feed table

Country Status (3)

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EP (1) EP1088778B1 (en)
AT (1) ATE281390T1 (en)
DE (2) DE19947554C2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10213705C5 (en) * 2001-04-26 2017-01-05 Heidelberger Druckmaschinen Ag Apparatus for conveying a sheet flow from a sheet stack to a sheet processing machine
DE102005009289A1 (en) * 2005-03-01 2006-09-07 Koenig & Bauer Ag feed table
DE102005009223A1 (en) * 2005-03-01 2006-09-07 Koenig & Bauer Ag feed table
DE102011116365A1 (en) * 2011-10-19 2013-04-25 Heidelberger Druckmaschinen Aktiengesellschaft Sheet processing machine with sheet feeder with suction belt module
CN103693468B (en) * 2013-12-31 2016-09-14 株洲三新包装技术有限公司 Cardboard printing machine bellows group negative pressure extractor fan and water-based printing of corrugated paper plate machine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3838078C3 (en) * 1988-11-10 1998-08-13 Roland Man Druckmasch Device for conveying a flow of sheets
DE4013302A1 (en) * 1990-04-26 1991-10-31 Koenig & Bauer Ag DEVICE FOR PROMOTING A PARTICULAR DIVIDED FLOW FROM ARC
DE4416289C2 (en) * 1994-05-07 2003-06-05 Heidelberger Druckmasch Ag Device for conveying a shingled stream of sheets
DE4416286C2 (en) * 1994-05-07 1999-10-28 Heidelberger Druckmasch Ag Device for adjusting the negative pressure in a suction belt feed table of a sheet feeder
DE4442629C2 (en) * 1994-12-01 1998-05-07 Heidelberger Druckmasch Ag Suction belt table

Also Published As

Publication number Publication date
DE50008490D1 (en) 2004-12-09
DE19947554C2 (en) 2003-11-27
ATE281390T1 (en) 2004-11-15
DE19947554A1 (en) 2001-04-12
EP1088778A2 (en) 2001-04-04
EP1088778A3 (en) 2002-12-04

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