EP0282828B1 - Sheet smoother in the infeed area of a sheet processing machine - Google Patents

Sheet smoother in the infeed area of a sheet processing machine Download PDF

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Publication number
EP0282828B1
EP0282828B1 EP88103251A EP88103251A EP0282828B1 EP 0282828 B1 EP0282828 B1 EP 0282828B1 EP 88103251 A EP88103251 A EP 88103251A EP 88103251 A EP88103251 A EP 88103251A EP 0282828 B1 EP0282828 B1 EP 0282828B1
Authority
EP
European Patent Office
Prior art keywords
sheet
smoothing
brush
laying
arms
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
EP88103251A
Other languages
German (de)
French (fr)
Other versions
EP0282828A1 (en
Inventor
Hellmuth Rehwagen
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
Priority to AT88103251T priority Critical patent/ATE57887T1/en
Publication of EP0282828A1 publication Critical patent/EP0282828A1/en
Application granted granted Critical
Publication of EP0282828B1 publication Critical patent/EP0282828B1/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
    • B65H5/00—Feeding articles separated from piles; Feeding articles to machines
    • B65H5/36—Article guides or smoothers, e.g. movable in operation

Definitions

  • the invention relates to a sheet smoothing device in the feed area of a sheet processing machine according to the preamble of the first claim for protection.
  • a sheet smoothing device is known from DE-C 3 521 590. Above the lay-on sheet, a bar can be moved up and down transversely to the direction of the sheet inlet in the area of the gripper edge of the sheet which is raised by a control device each time the sheet is pulled off by the pre-grippers and approximately smooth again to smooth the gripper edge of the next sheet Bow is lowered.
  • the disadvantage here is that the rigid beam can not be lowered directly onto the next sheet, because otherwise the sheet entry is hindered.
  • a sheet smoothing device in the feed area of a sheet-processing machine in which a hold-down device for smoothing and stretching holding down the sheets on the transport plane is provided, which is designed as a smoothing roller, which is transverse to the sheet conveying direction Axle extending transport plane is freely rotatable and is mounted approximately vertically movable away from the transport plane.
  • Axle extending transport plane is freely rotatable and is mounted approximately vertically movable away from the transport plane.
  • the fact that the smoothing roller runs freely lying on the sheet prevents damage to a pressure already applied to the sheet.
  • a disadvantage of this device is that the smooth roller that is constantly in contact makes it difficult to separate the sheet that is being drawn off from the next sheet. There is a risk that, as a result of electrostatic charging, the subsequent sheet below will be pulled upwards in part or over the entire width. This would adversely affect the flatness of the newly arriving sheet at its leading edge.
  • the invention has for its object to provide a sheet smoothing device on the contact sheet of a sheet-processing machine of the type mentioned, which makes it possible that neither the alignment process nor the running of the sheet into the machine are affected.
  • the sheet smoothing device is used in conventional sheet feeders.
  • FIGS. 1 and 2 there is a contact sheet 1 on which the sheets 2 to be fed to the sheet-processing machine are fed.
  • a smoothing brush 3 which can be swiveled up and down, is arranged transversely to the feed direction above the contact plate 1 or the sheet 2 fed thereon.
  • the bristles 20 of the smoothing brush 3 are preferably directed at an angle obliquely downwards onto the contact plate 1.
  • two arms 13 are fastened at a distance from one another in the direction of the sheet travel, which arms 13 are rotatably mounted with the smoothing brush 3 about an axis of rotation 14 extending transversely to the direction of the sheet travel.
  • pins are provided on the arms 13, which are rotatably received in holders 19 arranged fixed to the frame. These are received on the machine side wall 4 of the sheet-processing machine in a crossmember 6, which is fastened in bearing plates 5.
  • the two arms 13 are each assigned a spring rod 16 which is connected in the joint 15 to the end of the respective arm 13.
  • the spring rod 16 is supported on a support plate 17 which is connected to the holders 19.
  • the spring rod 16 is pressed up under spring pressure.
  • the smoothing brush 3 is pushed with the bristles 20 downward in the direction of the contact plate 1 onto the sheet 2 located thereon.
  • the swiveling path of the smoothing brush 3 downwards and thus the contact pressure of the bristles 20 on the bow 2 is by an adjusting nut 21 of the spring rod 16 depending on the properties, e.g. Thickness of the arch 2, adjustable.
  • the bristles should have 20 natural hair, e.g. have machine-combed horsehair.
  • a device controlled by compressed air which consists of a compressed air source, not shown, control valve 7 with compressed air connection 8 and a compressed air cylinder 10 with pressure piece 11 and acts against the pressure of the spring rod 16 on a shoulder 12 of the arms 13, the smooth brush 3 is under pressure " Lifted off "from sheet 2. When the pressure is "on”, the smoothing brush 3 lowers again onto the sheet 2.
  • the compressed air cylinder 10 is fastened to the crossmember 6 by means of a foldable clamping device 9.
  • the particular advantage of the invention is that after pulling the side mark the sheet can be fed straight and without prancing to the impression cylinder, even if thin, wave-forming paper is used as the material. It helps to improve the quality of the print with regard to doubling, especially with thin print media.

Abstract

1. Sheet smoothing device in the feed area of a sheet treating machine with a laying-on plate (1) arranged in front of the pre-grippers on to which sheets (2) can be fed to the machine and with a sheet smoother extending over the entire width of the laying-on plate (1), which is arranged above the infeed sheet (1) transversely to the direction of the sheet running in directly in front of the front guides of the sheet treating machine and by means of a control device each time lowers with print "on" and is raised with print "off", characterised in that as sheet smoother there is provided a smoothing brush (3) extending over the entire width of the laying-on plate (1).

Description

Die Erfindung bezieht sich auf eine Bogenglätteinrichtung im Zuführbereich einer bogenverarbeitenden Maschine nach dem Oberbegriff des ersten Schutzanspruches.The invention relates to a sheet smoothing device in the feed area of a sheet processing machine according to the preamble of the first claim for protection.

Eine Bogenglätteinrichtung ist aus der DE-C 3 521 590 bekannt. Oberhalb des Anlegebleches ist quer zur Richtung des Bogeneinlaufes ein Balken auf- und abbewegbar im Bereich der Greiferkante des angelegten Bogens angeordnet, der durch eine Steuervorrichtung jeweils beim Abziehen des Bogens durch die Vorgreifer angehoben und zur Glättung der Greiferkante des nächstfolgend angelegten Bogens wieder annähernd auf den Bogen abgesenkt wird. Nachteilig ist dabei, daß der starre Balken nicht direkt auf den nächstfolgend angelegten Bogen abgesenkt werden kann, weil sonst der Bogeneinlauf behindert wird.A sheet smoothing device is known from DE-C 3 521 590. Above the lay-on sheet, a bar can be moved up and down transversely to the direction of the sheet inlet in the area of the gripper edge of the sheet which is raised by a control device each time the sheet is pulled off by the pre-grippers and approximately smooth again to smooth the gripper edge of the next sheet Bow is lowered. The disadvantage here is that the rigid beam can not be lowered directly onto the next sheet, because otherwise the sheet entry is hindered.

Aus der DE-C 3 520 147 ist eine Bogenglättvorrichtung im Zuführbereich einer bogenverarbeitenden Maschine bekannt, bei der ein Niederhalter zum glättenden und streckenden Niederhalten der Bogen auf der Transportebene vorgesehen ist, der als Glättwalze ausgebildet ist, die um eine sich quer zur Bogenförderrichtung über die Transportebene erstreckende Achse frei drehbar und etwa senkrecht von der Transportebene wegbewegbar gelagert ist. Dadurch, daß die Glättwalze frei auf dem Bogen aufliegend mitläuft, werden Beschädigungen eines bereits auf die Bogen aufgebrachten Druckes vermieden. Nachteilig ist bei dieser Vorrichtung, daß die ständig aufliegende Glättwalze eine Trennung des abziehenden Bogens von dem nächstfolgend angelegten Bogen erschwert. Es besteht die Gefahr, daß infolge elektrostatischer Aufladung der darunterliegende nachfolgende Bogen partiell oder über die gesamte Breite mit nach oben gezogen wird. Dadurch würde die Planlage des neu ankommenden Bogens an seiner Vorderkante ungünstig beeinflußt.From DE-C 3 520 147 a sheet smoothing device in the feed area of a sheet-processing machine is known, in which a hold-down device for smoothing and stretching holding down the sheets on the transport plane is provided, which is designed as a smoothing roller, which is transverse to the sheet conveying direction Axle extending transport plane is freely rotatable and is mounted approximately vertically movable away from the transport plane. The fact that the smoothing roller runs freely lying on the sheet prevents damage to a pressure already applied to the sheet. A disadvantage of this device is that the smooth roller that is constantly in contact makes it difficult to separate the sheet that is being drawn off from the next sheet. There is a risk that, as a result of electrostatic charging, the subsequent sheet below will be pulled upwards in part or over the entire width. This would adversely affect the flatness of the newly arriving sheet at its leading edge.

Der Erfindung liegt die Aufgabe zugrunde, eine Bogenglätteinrichtung am Anlegeblech einer bogenverarbeitenden Maschine genannter Gattung zu schaffen, die es ermöglicht, daß weder der Ausrichtevorgang noch das Einlaufen des Bogens in die Maschine beeinträchtigt werden.The invention has for its object to provide a sheet smoothing device on the contact sheet of a sheet-processing machine of the type mentioned, which makes it possible that neither the alignment process nor the running of the sheet into the machine are affected.

Gelöst wird diese Aufgabe gemäß dem kennzeichnenden Teil des ersten Anspruches. Weiterbildungen ergeben sich aus den Unteransprüchen in Verbindung mit der Zeichnung und der Beschreibung. In der Zeichnung ist der Erfindungsgegenstand in einem Ausführungsbeispiel dargestellt.This problem is solved according to the characterizing part of the first claim. Further developments result from the subclaims in connection with the drawing and the description. In the drawing, the subject of the invention is shown in one embodiment.

Es zeigen:

  • Fig. 1 eine Vorderansicht einer Bogenanlage mit einer Bogenglätteinrichtung in Teilansicht rechts,
  • Fig. 2 einen Schnitt A-A nach Fig. 1.
Show it:
  • 1 is a front view of a sheet feeder with a sheet smoothing device in partial view on the right,
  • 2 shows a section AA of FIG. 1st

Der Einsatz der erfindungsgemäßen Bogenglätteinrichtung erfolgt in herkömmlichen Bogenanlegern. Gemäß Fig. 1 und 2 ist ein Anlegeblech 1 vorhanden, auf dem die der bogenverarbeitenden Maschine zuzuführenden Bogen 2 zugeführt werden. Quer zur Zuführungsrichtung ist oberhalb des Anlegebleches 1 bzw. des auf diesem zugeführten Bogen 2 eine aufund abschwenkbare Glattstreichbürste 3 angeordnet. Die Borsten 20 der Glattstreichbürste 3 sind vorzugsweise in einem Winkel schräg nach unten auf das Anlegeblech 1 hin gerichtet. Am Bürstenkörper 18 der sich über die gesamte Breite des Anlegebleches 1 erstreckenden Glattstreichbürste 3 sind voneinander beabstandet in Richtung des Bogenlaufes zwei Arme 13 befestigt, die mit der Glattstreichbürste 3 um eine sich quer zur Richtung des Bogenlaufes erstreckende Drehachse 14 drehbar gelagert sind. Hierzu sind Zapfen an den Armen 13 vorgesehen, die in gestellfest angeordneten Haltern 19 drehbeweglich aufgenommen sind. Diese sind an der Maschinenseitenwand 4 der bogenverarbeitenden Maschine in einer Traverse 6 aufgenommen, die in Lagerplatten 5 befestigt ist. Den beiden Armen 13 ist jeweils eine Federstange 16 zugeordnet, die im Gelenk 15 mit dem Ende des jeweiligen Armes 13 verbunden ist. Die Federstange 16 stützt sich an einer Stützplatte 17 ab, die mit den Haltern 19 verbunden ist. Die Federstange 16 wird unter Federdruck nach oben gedrückt. Dadurch wird die Glattstreichbürste 3 mit den Borsten 20 nach unten in Richtung des Anlegebleches 1 auf den darauf befindlichen Bogen 2 gedrängt. Der Schwenkweg der Glattstreichbürste 3 nach unten und damit der Anpreßdruck der Borsten 20 auf den Bogen 2 ist durch eine Stellmutter 21 der Federstange 16 je nach den Eigenschaften, z.B. Dicke des Bogens 2, einstellbar. Zur Verhinderung der elektrostatischen Aufladung sollten die Borsten 20 Naturhaar, z.B. maschinengekämmtes Roßhaar aufweisen. Über eine mittels Druckluft gesteuerte Einrichtung, die aus einer nicht dargestellten Druckluftquelle, Steuerventil 7 mit Druckluftanschluß 8 und einem Druckluftzylinder 10 mit Druckstück 11 besteht und gegen den Druck der Federstange 16 auf einen Ansatz 12 der Arme 13 wirkt, wird die Glattstreichbürste 3 bei Druck "Ab" vom Bogen 2 abgehoben. Bei Druck "An" senkt sich die Glattstreichbürste 3 wieder auf den Bogen 2. Der Druckluftzylinder 10 ist mittels einer klappbaren Klemmeinrichtung 9 an der Traverse 6 befestigt.The sheet smoothing device according to the invention is used in conventional sheet feeders. According to FIGS. 1 and 2, there is a contact sheet 1 on which the sheets 2 to be fed to the sheet-processing machine are fed. A smoothing brush 3, which can be swiveled up and down, is arranged transversely to the feed direction above the contact plate 1 or the sheet 2 fed thereon. The bristles 20 of the smoothing brush 3 are preferably directed at an angle obliquely downwards onto the contact plate 1. On the brush body 18 of the smoothing brush 3, which extends over the entire width of the contact plate 1, two arms 13 are fastened at a distance from one another in the direction of the sheet travel, which arms 13 are rotatably mounted with the smoothing brush 3 about an axis of rotation 14 extending transversely to the direction of the sheet travel. For this purpose, pins are provided on the arms 13, which are rotatably received in holders 19 arranged fixed to the frame. These are received on the machine side wall 4 of the sheet-processing machine in a crossmember 6, which is fastened in bearing plates 5. The two arms 13 are each assigned a spring rod 16 which is connected in the joint 15 to the end of the respective arm 13. The spring rod 16 is supported on a support plate 17 which is connected to the holders 19. The spring rod 16 is pressed up under spring pressure. As a result, the smoothing brush 3 is pushed with the bristles 20 downward in the direction of the contact plate 1 onto the sheet 2 located thereon. The swiveling path of the smoothing brush 3 downwards and thus the contact pressure of the bristles 20 on the bow 2 is by an adjusting nut 21 of the spring rod 16 depending on the properties, e.g. Thickness of the arch 2, adjustable. To prevent electrostatic charging, the bristles should have 20 natural hair, e.g. have machine-combed horsehair. About a device controlled by compressed air, which consists of a compressed air source, not shown, control valve 7 with compressed air connection 8 and a compressed air cylinder 10 with pressure piece 11 and acts against the pressure of the spring rod 16 on a shoulder 12 of the arms 13, the smooth brush 3 is under pressure " Lifted off "from sheet 2. When the pressure is "on", the smoothing brush 3 lowers again onto the sheet 2. The compressed air cylinder 10 is fastened to the crossmember 6 by means of a foldable clamping device 9.

Der besondere Vorteil der Erfindung liegt darin, das nach dem Ziehen der Seitenmarke der Bogen absolut gerade und ohne tänzeln dem Druckzylinder zugeführt werden kann, auch wenn als Material dünnes, Wellen bildendes Papier Verwendung findet. Es wird dazu beigetragen, die Qualität des Druckes hinsichtlich Doublieren, insbesondere bei dünnen Druckträgern zu verbessern.The particular advantage of the invention is that after pulling the side mark the sheet can be fed straight and without prancing to the impression cylinder, even if thin, wave-forming paper is used as the material. It helps to improve the quality of the print with regard to doubling, especially with thin print media.

Bezuaszeichenliste

  • 1 Anlegeblech
  • 2 Bogen
  • 3 Glattstreichbürste
  • 4 Maschinenseitenwand
  • 5 Lagerplatte
  • 6 Traverse
  • 7 Steuerventil
  • 8 Druckluftanschluß
  • 9 klappbare Klemmeinrichtung
  • 10 Druckluftzylinder
  • 11 Druckstück
  • 12 Ansatz
  • 13 Arme
  • 14 Drehachse
  • 15 Gelenk
  • 16 einstellbare Federstange
  • 17 Stützplatte
  • 18 Bürstenkörper
  • 19 Halter
  • 20 Borsten
  • 21 Stellmutter
Reference list
  • 1 sheet
  • 2 sheets
  • 3 smooth brush
  • 4 machine side wall
  • 5 bearing plate
  • 6 traverse
  • 7 control valve
  • 8 compressed air connection
  • 9 foldable clamping device
  • 10 air cylinders
  • 11 pressure piece
  • 12 approach
  • 13 arms
  • 14 axis of rotation
  • 15 joint
  • 16 adjustable spring bars
  • 17 support plate
  • 18 brush body
  • 19 holder
  • 20 bristles
  • 21 adjusting nut

Claims (3)

1. Sheet smoothing device in the feed area of a sheet treating machine with a laying-on plate (1) arranged in front of the pre-grippers on to which sheets (2) can be fed to the machine and with a sheet smoother extending over the entire width of the laying-on plate (1), which is arranged above the infeed sheet (1) transversely to the direction of the sheet running in directly in front of the front guides of the sheet treating machine and by means of a control device each time lowers with print "on" and is raised with print "off", characterised in that as sheet smoother there is provided a smoothing brush (3) extending over the entire width of the laying-on plate (1).
2. Sheet smoothing device according to Claim 1 characterised in that the bristles (20) of the lowered smoothing brush (3) are directed at an angle obliquely downwardly.
3. Sheet smoothing device according to Claim 1 and 2 characterised in that on the brush body (18) of the smoothing brush (3) spaced from one another in the direction of sheet travel there are fixed two arms (13), that both arms (13) are rotatably mounted with the smoothing brush (3) about a rotational axis (14) extending transversely to the direction of sheet running in mounts (19) arranged fixed with respect to the framework, that both arms (13) have arranged on them a spring rod (16) supported rotatably with respect to the framework (4, 5, 6, 17, 19), which is connected at a joint (15) with the end of the respective arms (13) and that the smoothing brush (3) can be directly pressed with its bristles on to the laid-on sheet (2) by spring force by the spring rod (16) adjustable by means of adjusting nut (21) and is liftable by means of a device controlled by means of compressed air (7, 8, 10, 11) which acts counter to the pressure of the spring rod (16) on a tag (12) of the arm (13), from the sheet (2) with print "off".
EP88103251A 1987-03-17 1988-03-03 Sheet smoother in the infeed area of a sheet processing machine Expired - Lifetime EP0282828B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT88103251T ATE57887T1 (en) 1987-03-17 1988-03-03 SHEET TROWELLING DEVICE IN THE INFEED AREA OF A SHEET PROCESSING MACHINE.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE8703993U DE8703993U1 (en) 1987-03-17 1987-03-17
DE8703993U 1987-03-17

Publications (2)

Publication Number Publication Date
EP0282828A1 EP0282828A1 (en) 1988-09-21
EP0282828B1 true EP0282828B1 (en) 1990-10-31

Family

ID=6805970

Family Applications (1)

Application Number Title Priority Date Filing Date
EP88103251A Expired - Lifetime EP0282828B1 (en) 1987-03-17 1988-03-03 Sheet smoother in the infeed area of a sheet processing machine

Country Status (3)

Country Link
EP (1) EP0282828B1 (en)
AT (1) ATE57887T1 (en)
DE (2) DE8703993U1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4130805C2 (en) * 1991-09-17 1994-01-27 Koenig & Bauer Ag Device on a cylinder for sheet-fed rotary printing machines
DE4435264C2 (en) * 1994-10-01 2001-05-10 Heidelberger Druckmasch Ag Bow hold down
DE19710630C2 (en) * 1997-03-14 1999-11-11 Roland Man Druckmasch Device for aligning flat objects transported in a continuous row
DE10207198C5 (en) * 2002-02-21 2014-06-26 Koenig & Bauer Aktiengesellschaft belt table
DE10246297B4 (en) * 2002-10-02 2007-01-25 Man Roland Druckmaschinen Ag Hold-down device in the sheet system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3889942A (en) * 1973-10-23 1975-06-17 Wilber B Robnolte Device for facilitating the feeding of sheets into a reproduction machine or the like

Also Published As

Publication number Publication date
DE3860902D1 (en) 1990-12-06
DE8703993U1 (en) 1987-04-30
EP0282828A1 (en) 1988-09-21
ATE57887T1 (en) 1990-11-15

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