EP2918530B1 - Device for positioning a front edge of a sheet - Google Patents

Device for positioning a front edge of a sheet Download PDF

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Publication number
EP2918530B1
EP2918530B1 EP15153161.3A EP15153161A EP2918530B1 EP 2918530 B1 EP2918530 B1 EP 2918530B1 EP 15153161 A EP15153161 A EP 15153161A EP 2918530 B1 EP2918530 B1 EP 2918530B1
Authority
EP
European Patent Office
Prior art keywords
sheet
sensor
pressure roller
leading edge
disposed
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.)
Not-in-force
Application number
EP15153161.3A
Other languages
German (de)
French (fr)
Other versions
EP2918530A1 (en
Inventor
Andreas MÜLLER
Volker Müller
Denis Jahn
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.)
Heidelberger Druckmaschinen AG
Original Assignee
Heidelberger 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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP2918530A1 publication Critical patent/EP2918530A1/en
Application granted granted Critical
Publication of EP2918530B1 publication Critical patent/EP2918530B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65H11/007—Feed tables with front stop arrangements
    • 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
    • B65H5/36—Article guides or smoothers, e.g. movable in operation
    • 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
    • B65H7/02—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors
    • B65H7/06—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed
    • B65H7/08—Controlling article feeding, separating, pile-advancing, or associated apparatus, to take account of incorrect feeding, absence of articles, or presence of faulty articles by feelers or detectors responsive to presence of faulty articles or incorrect separation or feed responsive to incorrect front register
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H9/00—Registering, e.g. orientating, articles; Devices therefor
    • B65H9/10—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position
    • B65H9/103—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position acting by friction or suction on the article for pushing or pulling it into registered position, e.g. against a stop
    • B65H9/106—Pusher and like movable registers; Pusher or gripper devices which move articles into registered position acting by friction or suction on the article for pushing or pulling it into registered position, e.g. against a stop using rotary driven elements as part acting on the article
    • 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
    • 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
    • B65H2553/00—Sensing or detecting means
    • B65H2553/40—Sensing or detecting means using optical, e.g. photographic, elements
    • B65H2553/41—Photoelectric detectors
    • B65H2553/416—Array arrangement, i.e. row of emitters or detectors
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/10—Handled articles or webs
    • B65H2701/13—Parts concerned of the handled material
    • B65H2701/131—Edges
    • B65H2701/1311—Edges leading edge

Definitions

  • the invention relates to a device for positioning a sheet leading edge of attacks in a sheet-processing machine, for. B. printing press or punch.
  • sheets are fed individually or in a flake form a further processing station. Before transferring the sheets to the further processing station, these are aligned in the sheet transport direction at leading edge stops. Transport to these leading edge stops z. B. by means of at least one endless circulating suction air acted upon conveyor belt.
  • the invention has for its object to provide a device that allows to regulate the force acting on the sheet feed force.
  • a pressure roller acting in the region of a sheet trailing edge on the sheet to be aligned is provided, which is adjustable in or against the sheet transport direction.
  • a motor-driven linear system which is connected to sensors which are arranged in the region of an application line formed by the leading edge stops.
  • the sensors are arranged in an advantageous arrangement both before and behind the lay-up line, so that in particular a part of the sheet can be detected, which has already exceeded the landing line and thus can detect a crease of the sheet.
  • a punch or a printing machine 1 has a feeder 2 and in the case of a printing machine at least one printing unit 3 or 4 and a boom 6 on.
  • the sheets 7 are removed from a sheet stack 8 and isolated or scaly fed via a feed table 9 the printing units 3 and 4.
  • These contain in a known manner in each case a plate cylinder 11, 12.
  • Die Plate cylinders 11 and 12 each have a device for mounting flexible printing plates.
  • each plate cylinder 11, 12 associated with a device for semi or fully automatic printing plate change.
  • the sheet stack 8 rests on a controllably liftable main stacking plate 10.
  • the removal of the sheet 7 takes place from the top of the sheet pile 8 by means of a so-called suction head 18, which, inter alia, a number of lifting and trailing suction for the separation of the sheet 7 has.
  • blowing devices are provided for loosening the upper sheet layers of the scanning elements for stack tracking.
  • the separated by the suction head 18 sheets are transported by means of at least one conveyor belt 21, preferably by means of a pressurizable air conveyor belt 21 at leading edge stops 22.
  • the leading edge stops 22 are spaced apart in a row transverse to the sheet transport direction.
  • a pressure roller 23 acts in the region of a trailing edge on the sheet 7 to this against a guided on the feed table 9 conveyor belt 21 and to press an intermediate succeeding sheet.
  • the conveyed to the leading edge stops 22 sheet 7 is aligned in the circumferential or sheet transport direction of these.
  • the pressure roller 23 is preferably designed as a brush roller and mounted freely rotatably in a fork bearing 20.
  • the fork bearing 20 has a linear drive 25 with a servomotor 27 for changing the position of the pressure roller 23.
  • One or more sensors 24 arranged in the area of the laying line A detect the laying line A across arcs and generate by means of a control computer 26 a control signal for the servomotor 27, which controls the position of the pressure roller 23.
  • the sensor 24 is designed as a line sensor and integrated in the feed table 9.
  • the line sensor extends in the sheet transport direction over a length b, which starts before the laying line A and ends behind the laying line A.
  • FIG. 3 it is provided to arrange the sensor 24 above the feed table 9 above the laying line A, wherein the detection area, seen in the direction of sheet transport, starts in front of the laying line A and reaches behind the laying line A.
  • a simple sensor 24 is provided in the form of a diode or a diffuse reflection sensor, which is arranged behind the laying line A, seen only in the direction of sheet transport.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Registering Or Overturning Sheets (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zur Positionierung einer Bogenvorderkante an Anschlägen in einer Bogen verarbeitenden Maschine, z. B. Druckmaschine oder Stanze.The invention relates to a device for positioning a sheet leading edge of attacks in a sheet-processing machine, for. B. printing press or punch.

In einem Anleger einer Bogen verarbeitenden Maschine werden Bögen einzeln oder in Schuppenform einer Weiterverarbeitungsstation zugeführt. Vor einer Übergabe der Bögen an die Weiterverarbeitungsstation werden diese in Bogentransportrichtung an Vorderkantenanschlägen ausgerichtet. Ein Transport an diese Vorderkantenanschläge erfolgt z. B. mittels mindestens eines endlos umlaufenden Saugluft beaufschlagbaren Transportbandes.In a feeder of a sheet processing machine sheets are fed individually or in a flake form a further processing station. Before transferring the sheets to the further processing station, these are aligned in the sheet transport direction at leading edge stops. Transport to these leading edge stops z. B. by means of at least one endless circulating suction air acted upon conveyor belt.

Durch die DE 19525549 C2 ist es z. B. bekannt, eine Andrückrolle vorzusehen, die im Bereich eines Schuppenabstandes von den Vorderkantenanschlägen angeordnet ist und von oben auf den auszurichtenden Bogen einwirkt, um dessen Kontakt mit einer darunter angeordneten Treibwalze zu verbessern, damit ein guter Vorschub des Bogens bis an die Vorderkantenanschläge gewährleistet ist.By the DE 19525549 C2 is it z. B. known to provide a pressure roller, which is arranged in the region of a scale distance of the leading edge stops and acting from above on the sheet to be aligned to improve its contact with a drive roller arranged underneath, so that a good feed of the sheet is guaranteed up to the leading edge stops ,

Allgemein besteht ein Problem darin, dass Bögen, die mit ausreichender Vorschubkraft an die Vorderkantenanschlägen gefördert werden, mit zu hoher Energie auf dieser auftreffen. Hierbei können diese zum Einen zurückprallen oder die Bogenvorderkanten werden durch die Anschläge deformiert und somit beschädigt. Hierdurch kann es insbesondere beim Weitertransport zu Problemen beim Erfassen der Bogenvorderkante durch Greifereinrichtungen kommen.Generally, there is a problem that sheets that are conveyed with sufficient feed force to the leading edge stops impinge on it with too much energy. These can rebound on the one hand or the sheet leading edges are deformed by the stops and thus damaged. This can lead to problems when gripping the sheet leading edge by gripper devices, especially during further transport.

Der Erfindung liegt die Aufgabe zugrunde eine Vorrichtung zu schaffen, die es erlaubt die auf den Bogen wirkende Vorschubkraft zu regulieren.The invention has for its object to provide a device that allows to regulate the force acting on the sheet feed force.

Die Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruchs 1 gelöst.The object is achieved by the features of claim 1.

Es ist ein besonderer Vorteil der Erfindung, dass eine im Bereich einer Bogenhinterkante auf den auszurichtenden Bogen einwirkende Andrückrolle vorgesehen ist, welche in bzw. gegen die Bogentransportrichtung einstellbar ist. Durch diese Maßnahme kann die Andrückkraft der Rolle auf den Bogen und damit die Andrückkraft auf das Transportmittel eingestellt werden, wodurch die auf den Bogen ausgeübte Vorschubkraft geregelt werden kann.It is a particular advantage of the invention that a pressure roller acting in the region of a sheet trailing edge on the sheet to be aligned is provided, which is adjustable in or against the sheet transport direction. By this measure, the pressing force of the roller on the sheet and thus the pressing force can be set to the transport, whereby the force exerted on the sheet feed force can be controlled.

Zur Automatisierung der Vorrichtung ist ein motorisch antreibbares Linearsystem vorgesehen, welches mit Sensoren verbunden ist, die im Bereich einer durch die Vorderkantenanschläge gebildeten Anlegelinie angeordnet sind.To automate the device, a motor-driven linear system is provided, which is connected to sensors which are arranged in the region of an application line formed by the leading edge stops.

Die Sensoren sind in vorteilhafter Anordnung sowohl vor, als auch hinter der Anlegelinie angeordnet, so dass insbesondere auch ein Teil des Bogens erfasst werden kann, der die Anlegelinie bereits überschritten hat und somit ein Knautschen des Bogens erfassen kann.The sensors are arranged in an advantageous arrangement both before and behind the lay-up line, so that in particular a part of the sheet can be detected, which has already exceeded the landing line and thus can detect a crease of the sheet.

Ein Ausführungsbeispiel der Erfindung ist in den Zeichnungen dargestellt und wir im Folgenden beschrieben. Es zeigen

Figur 1
eine Bogenrotationsdruckmaschine im Schnitt in schematischer Darstellung
Figur 2
eine Draufsicht auf den Anlegebereich im Bereich der Vorderkantenanschläge
Figur 3
einen Schnitt durch die Vorderkantenanschläge im vorderen Anlegebereich
Figur 4
ein Ausführungsbeispiel mit unterhalb des Transportsystems angeordneten Sensoren
An embodiment of the invention is illustrated in the drawings and described below. Show it
FIG. 1
a sheet-fed rotary printing press in section in a schematic representation
FIG. 2
a plan view of the landing area in the area of the leading edge stops
FIG. 3
a section through the front edge stops in the front landing area
FIG. 4
an embodiment with arranged below the transport system sensors

Eine Bogen 7 verarbeitende Maschine, z. B. eine Stanze oder eine Druckmaschine 1, weist einen Anleger 2 und im Fall einer Druckmaschine mindestens ein Druckwerk 3 bzw. 4 und einen Ausleger 6 auf. Die Bogen 7 werden von einem Bogenstapel 8 entnommen und vereinzelt oder schuppenförmig über einen Zuführtisch 9 den Druckwerken 3 und 4 zugeführt. Diese enthalten in bekannter Weise jeweils einen Plattenzylinder 11, 12. Die Plattenzylinder 11 und 12 weisen jeweils eine Vorrichtung zum Befestigen flexibler Druckplatten auf. Darüber hinaus ist jedem Plattenzylinder 11, 12 eine Vorrichtung für den halb- oder vollautomatischen Druckplattenwechsel zugeordnet.A sheet 7 processing machine, z. As a punch or a printing machine 1, has a feeder 2 and in the case of a printing machine at least one printing unit 3 or 4 and a boom 6 on. The sheets 7 are removed from a sheet stack 8 and isolated or scaly fed via a feed table 9 the printing units 3 and 4. These contain in a known manner in each case a plate cylinder 11, 12. Die Plate cylinders 11 and 12 each have a device for mounting flexible printing plates. In addition, each plate cylinder 11, 12 associated with a device for semi or fully automatic printing plate change.

Der Bogenstapel 8 liegt auf einer gesteuert anhebbaren Hauptstapelplatte 10 auf. Die Entnahme der Bogen 7 erfolgt von der Oberseite des Bogenstapels 8 mittels eines sogenannten Saugkopfes 18, der unter anderem eine Anzahl von Hub- und Schleppsaugern für die Vereinzelung der Bogen 7 aufweist. Darüber hinaus sind Blaseinrichtungen zur Auflockerung der oberen Bogenlagen der Tastelemente zur Stapelnachführung vorgesehen. Zur Ausrichtung des Bogenstapels 8, insbesondere der oberen Bogen 7 des Bogenstapels 8 sind eine Anzahl von seitlichen und hinteren Anschlägen vorgesehen.The sheet stack 8 rests on a controllably liftable main stacking plate 10. The removal of the sheet 7 takes place from the top of the sheet pile 8 by means of a so-called suction head 18, which, inter alia, a number of lifting and trailing suction for the separation of the sheet 7 has. In addition, blowing devices are provided for loosening the upper sheet layers of the scanning elements for stack tracking. For aligning the sheet stack 8, in particular the upper sheet 7 of the sheet stack 8 a number of lateral and rear stops are provided.

Die vom Saugkopf 18 vereinzelten Bögen werden mittels mindestens eines Transportbandes 21 vorzugsweise mittels eines mit Saugluft beaufschlagbaren Transportbandes 21 an Vorderkantenanschläge 22 transportiert. Die Vorderkantenanschläge 22 sind in einer Reihe quer zur Bogentransportrichtung voneinander beabstandet angeordnet.The separated by the suction head 18 sheets are transported by means of at least one conveyor belt 21, preferably by means of a pressurizable air conveyor belt 21 at leading edge stops 22. The leading edge stops 22 are spaced apart in a row transverse to the sheet transport direction.

Oberhalb des Bogenstroms ist in einem Abstand a (a = Formatlänge eines Bogens) von den Vorderkantenanschlägen 22 beabstandet, eine Andrückrolle 23 vorgesehen, die im Bereich einer Hinterkante auf den Bogen 7 wirkt, um diesen gegen ein auf dem Zuführtisch 9 geführtes Transportband 21 bzw. einen dazwischenliegenden nachfolgenden Bogen zu drücken. Durch diese Maßnahme wird ein guter Kontakt mit den Fördermitteln hergestellt und ein Schlupf zwischen dem Bogen 7 und den Fördermitteln verringert.Above the sheet flow is at a distance a (a = format length of a sheet) spaced from the leading edge stops 22, a pressure roller 23 is provided, which acts in the region of a trailing edge on the sheet 7 to this against a guided on the feed table 9 conveyor belt 21 and to press an intermediate succeeding sheet. By this measure, a good contact with the funding is produced and a slip between the sheet 7 and the funding is reduced.

Der an die Vorderkantenanschläge 22 geförderte Bogen 7 wird in Umfangs- bzw. Bogentransportrichtung an diesen ausgerichtet. Die Andrückrolle 23 ist vorzugsweise als Bürstenrolle ausgebildet und in einem Gabellager 20 frei drehbar gelagert. Das Gabellager 20 weist einen Linearantrieb 25 mit einem Stellmotor 27 zur Lageveränderung der Andrückrolle 23 auf.The conveyed to the leading edge stops 22 sheet 7 is aligned in the circumferential or sheet transport direction of these. The pressure roller 23 is preferably designed as a brush roller and mounted freely rotatably in a fork bearing 20. The fork bearing 20 has a linear drive 25 with a servomotor 27 for changing the position of the pressure roller 23.

Bei der Verarbeitung unterschiedlich großer und dicker Bögen ändert sich zum Einen die Masse sowie die Festigkeit eines Bogens. Hierdurch ist es möglich, dass ein Bogen mit einem zu hohen Massestoß gegen die Vorderkantenanschläge 22 gefördert wird. Hierbei wird die Bogenvorderkante verformt und kann eine durch die Vorderkantenanschläge 22 definierte Anlegelinie A überschreiten. Hierbei kommt es zu einem Knautschen des Bogens.When processing differently sized and thick sheets changes on the one hand, the mass and the strength of an arc. This makes it possible that a bow is conveyed with an excessively high mass impact against the leading edge stops 22. In this case, the sheet leading edge is deformed and may exceed a defined by the leading edge stops 22 laying line A. This results in a crunching of the bow.

Ein oder mehrere im Bereich der Anlegelinie A angeordnete Sensoren 24 erfassen die Anlegelinie A überschreitenden Bögen und erzeugen mittels eines Steuerrechners 26 ein Steuersignal für den Stellmotor 27, welcher die Lage der Andrückrolle 23 steuert.One or more sensors 24 arranged in the area of the laying line A detect the laying line A across arcs and generate by means of a control computer 26 a control signal for the servomotor 27, which controls the position of the pressure roller 23.

Im Ausführungsbeispiel gemäß Figur 2 ist der Sensor 24 als Zeilensensor ausgebildet und im Zuführtisch 9 integriert. Der Zeilensensor erstreckt sich in Bogentransportrichtung über eine Länge b, welche vor der Anlegelinie A beginnt und hinter der Anlegelinie A endet.In the embodiment according to FIG. 2 the sensor 24 is designed as a line sensor and integrated in the feed table 9. The line sensor extends in the sheet transport direction over a length b, which starts before the laying line A and ends behind the laying line A.

In einem Ausführungsbeispiel gemäß Figur 3 ist es vorgesehen, den Sensor 24 oberhalb des Zuführtisches 9 über der Anlegelinie A anzuordnen, wobei der Erfassungsbereich, in Bogentransportrichtung gesehen, vor der Anlegelinie A startet und bis hinter die Anlegelinie A reicht.In an embodiment according to FIG. 3 it is provided to arrange the sensor 24 above the feed table 9 above the laying line A, wherein the detection area, seen in the direction of sheet transport, starts in front of the laying line A and reaches behind the laying line A.

In einem Ausführungsbeispiel gemäß Figur 4 ist ein einfacher Sensor 24 in Form einer Diode oder eines Reflexlichttasters vorgesehen, der ausschließlich in Bogentransportrichtung gesehen hinter der Anlegelinie A angeordnet ist.In an embodiment according to FIG. 4 a simple sensor 24 is provided in the form of a diode or a diffuse reflection sensor, which is arranged behind the laying line A, seen only in the direction of sheet transport.

Wird ein Bogen 7 mit zu hoher Geschwindigkeit gegen die Vorderkantenanschläge 22 gefördert, dann entsteht ein zu hoher Massestoß beim Auftreffen der Bogenvorderkante auf die Vorderkantenanschläge 22. Dieser Vorgang kann zu einer Verformung der Bogenvorderkante führen, so dass ein Teil der Bogenvorderkante die Anlegelinie A übertritt. Dieser Teil der Bogenvorderkante ist mittels des Sensors 24 erfassbar und mittels eines entsprechenden Stellsignals an den Stellmotor 27 weiterleitbar. Der Stellmotor 27 verlagert mittels eines Lineargetriebes 25 die Andrückrolle 23 entgegen der Bogentransportrichtung von den Vorderkantenanschlägen 22 weg. Durch diese Maßnahme wird der Kontakt der Andrückrolle 23 mit dem Bogen 7 vermindert, bzw. aufgehoben und die auf den Bogen wirkende Förderkraft minimiert. Der Bogen kann somit gegenüber seinen Fördermitteln z. B. Transportband 21 oder dem darunterliegenden durch das Transportband 21 geförderten Bogen schlupfen und mit einer geringeren Kraft gegen die Vorderkantenanschläge 22 gefördert werden.If a sheet 7 is conveyed at too high a speed against the leading edge stops 22, then a too high mass impact occurs when the sheet leading edge hits the leading edge stops 22. This process can lead to a deformation of the sheet leading edge, so that a part of the sheet leading edge exceeds the laying line A. This part of the sheet leading edge can be detected by means of the sensor 24 and forwarded by means of a corresponding actuating signal to the servomotor 27. The servo motor 27 displaced by means of a linear gear 25, the pressure roller 23 against the sheet transport direction of the leading edge stops 22 away. By this measure the contact of the pressure roller 23 with the sheet 7 is reduced or canceled and minimizes the conveying force acting on the sheet. The sheet can thus be compared to its funding z. B. conveyor belt 21 or the underlying conveyed by the conveyor belt 21 bow and be promoted with a lower force against the leading edge stops 22.

Es wird darüber hinaus vorgeschlagen, den Saugdruck des Transportbandes 21 zu reduzieren um gleichzeitig ebenfalls die auf den Bogen von unten wirkende Kraft zu vermindern und ein Schlupfen des Bogens gegenüber dem Transportband 21 zu ermöglichen.It is also proposed to reduce the suction pressure of the conveyor belt 21 at the same time also to reduce the force acting on the bow from below and to allow slippage of the sheet relative to the conveyor belt 21.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

11
Druckmaschinepress
22
Anlegerinvestor
33
Druckwerkprinting unit
44
Druckwerkprinting unit
55
./../.
66
Auslegerboom
77
Bogenbow
88th
Bogenstapelsheet pile
99
Zuführtischfeed
1010
Stapelplattestacking plate
1111
Plattenzylinderplate cylinder
1212
Plattenzylinderplate cylinder
1313
./../.
1414
./../.
1515
./../.
1616
./../.
1717
./../.
1818
Saugkopfsuction head
1919
./../.
2020
Gabellagerfork bearings
2121
Transportband (Saugband)Conveyor belt (suction belt)
2222
VorderkantenanschlagLeading-edge stop
2323
Andrückrollecapstan
2424
Sensorsensor
2525
Linearantrieblinear actuator
2626
Steuerrechnertax calculator
2727
Stellmotorservomotor
aa
Abstand (Bogenhinterkante/Vorderkantenanschlag)Distance (sheet trailing edge / leading edge stop)
bb
Länge des SensorsLength of the sensor
AA
Anlegeliniemooring line

Claims (11)

  1. Device for conveying and positioning sheets in the feeder of a sheet-processing machine by means of a transport belt and a pressure roller acting on the sheet from above,
    characterized in
    that at least one sensor (24) for detecting a leading edge of a sheet is disposed in the region of a positioning line (A) defined by the leading-edge stops (22) and that the pressure roller (23) is disposed to be linearly movable in and against the direction of sheet transport as a function of measured values of the sensor (24).
  2. Device according to claim 1,
    characterized in
    that the pressure roller (23) acts on the sheet in the region of the trailing edge of the sheet, with the distance of said region relative to the leading-edge stops 22 corresponding to the format of the sheets.
  3. Device according to claim 1 or 2,
    characterized in
    that the pressure roller (23) is supported to be free to rotate in a bearing bracket (20).
  4. Device according to claim 3,
    characterized in
    that the bearing bracket (20) has a drive (27).
  5. Device according to any one of the preceding claims,
    characterized in
    that the pressure roller (23) is a brush roller.
  6. Device according to claim 5,
    characterized in
    that by means of the sensor (24), the leading edge of the sheet is disposed behind the positioning line (A) as viewed in the direction of sheet transport.
  7. Device according to claim 5,
    characterized in
    that the sensor (24) is disposed in front of and behind the positioning line (A).
  8. Device according to any one of claims 5 to 7,
    characterized in
    that the sensor (24) is disposed in the feed table (9).
  9. Device according to any one of claims 5 to 7,
    characterized in
    that the sensor (24) is disposed above the feed table (9).
  10. Sheet-fed rotary printing press including a device according to any one of claims 1 to 9.
  11. Die-cutting machine including a device according to any one of claims 1 to 9.
EP15153161.3A 2014-02-14 2015-01-30 Device for positioning a front edge of a sheet Not-in-force EP2918530B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102014002085 2014-02-14

Publications (2)

Publication Number Publication Date
EP2918530A1 EP2918530A1 (en) 2015-09-16
EP2918530B1 true EP2918530B1 (en) 2016-10-26

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EP15153161.3A Not-in-force EP2918530B1 (en) 2014-02-14 2015-01-30 Device for positioning a front edge of a sheet

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EP (1) EP2918530B1 (en)
CN (1) CN104843517B (en)
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CN105417224B (en) * 2015-12-07 2017-10-24 郭福明 Middle seat alignment system and equipment

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DE19538632C2 (en) * 1995-10-17 2003-10-02 Koenig & Bauer Ag conveyor table
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DE102009025611B4 (en) * 2008-07-11 2022-08-25 Heidelberger Druckmaschinen Ag Method and device for feeding sheets to a processing machine
DE102009034443A1 (en) * 2008-09-12 2010-04-15 Heidelberger Druckmaschinen Ag Method and device for feeding sheets to a processing machine

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CN104843517A (en) 2015-08-19
CN104843517B (en) 2018-01-16
EP2918530A1 (en) 2015-09-16
DE102015201627A1 (en) 2015-08-20

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