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EP0071769B1 - Device for preventing the curling-up of the front edges of sheets in a delivery apparatus for a rotary sheet-printing machine - Google Patents

Device for preventing the curling-up of the front edges of sheets in a delivery apparatus for a rotary sheet-printing machine Download PDF

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Publication number
EP0071769B1
EP0071769B1 EP82106104A EP82106104A EP0071769B1 EP 0071769 B1 EP0071769 B1 EP 0071769B1 EP 82106104 A EP82106104 A EP 82106104A EP 82106104 A EP82106104 A EP 82106104A EP 0071769 B1 EP0071769 B1 EP 0071769B1
Authority
EP
European Patent Office
Prior art keywords
sheet
characterizing feature
accordance
air
housing block
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
Application number
EP82106104A
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German (de)
French (fr)
Other versions
EP0071769A1 (en
Inventor
Gerhard Pollich
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
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Filing date
Publication date
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Application filed by Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP0071769A1 publication Critical patent/EP0071769A1/en
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Expired 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
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/24—Delivering or advancing articles from machines; Advancing articles to or into piles by air blast or suction apparatus
    • B65H29/245—Air blast devices
    • B65H29/246—Air blast devices acting on stacking devices
    • B65H29/247—Air blast devices acting on stacking devices blowing on upperside of the sheet
    • 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
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/12—Means using fluid made only for exhausting gaseous medium producing gas blast
    • B65H2406/122—Nozzles
    • B65H2406/1222—Nozzles adjustable impact angle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Definitions

  • the invention relates to a device in the delivery of sheet-fed rotary printing machines to counteract the curling of the leading edge of the sheet.
  • the curling of the sheet leading edge occurs immediately after the opening of the gripper which transports the sheet, which can lead to the corners of the sheet leading edge having already been rolled up before the paper sheet to be deposited comes to lie on the stack.
  • the result is a significant disturbance in the stack formation. This is all the more so if, on top of that, the printing speed is very high.
  • this is achieved in that in the front of the stack in the direction of the sheet in the vicinity of the sheet leading edge of the sheet to be blown blowing devices are provided, via which in each case a controlled blast air flow with one directional component in the sheet running direction and another directed towards the sheet center towards the sheet is that the underside of the sinking sheet is acted upon in the area of the curling sheet leading edge.
  • Edge unrollers are used, which are characterized in that a guide surface is provided on which the web is guided on its web side facing away from the roll-in side and that a device is also provided for generating an air flow that rolls out the roll-up edge, which is on the roll-in side of the web is directed essentially parallel to the guide surface outwards against the roll edge and extends in the direction of movement of the web along the roll edge over the guide surface.
  • this device is not suitable, if only because the paper sheets to be deposited cannot move down past the blowing device onto the stack.
  • the intended position of the blowing device 2 according to the invention can be seen from the side view or plan view of a sheet delivery 1 shown in FIGS. 1 and 2.
  • the sheet 3 coming from the last printing unit, not shown, is transported by means of the gripper 4 to its storage position above the stack 5 and then released.
  • the suction devices 6 arranged in the area of the trailing edge of the sheet brake the sheet 3, while the fans 7 arranged above the sheet 3 to be deposited accelerate the deposit by increasing the sinking speed.
  • blowing devices 2, 20 provided on both sides of the sheet 3 to be deposited are in the exemplary embodiments indicated advantageously attached to the lateral straight benders 8. Arranged near the leading edge 9 of the sheet, as shown in FIGS. 1 and 2, these blow in the direction of sheet travel 10 and towards the center of the sheet and essentially parallel to the plane of the sheet.
  • FIG. 3 shows a first embodiment of the blowing device 2 according to the invention.
  • a holding bracket 13 is fastened to the lateral straight bend pushers 8 by means of corresponding fastening means 11, 12.
  • the housing block 14 is attached as an essential part of the blowing device 2 by means of retaining screws 15.
  • the air supply regulating shut-off valve 17 is screwed into a threaded bore 16 of the housing block 14.
  • the hose 18 connected to it establishes the connection to the blown air source, not shown.
  • the air outlet bores 19 incorporated into the housing block 14 open into the threaded bore 16 and, together with this, ensure the desired guidance of the blown air stream 20.
  • FIG. 4 The side view of the device according to FIG. 3 shown in FIG. 4 serves to clarify the construction.
  • FIGS. 5 and 6 show a side view and a top view, respectively, of another design option for the blowing device 21 according to the invention.
  • the same is arranged on both sides of the paper sheet 3 on the lateral sheet straight pushers 8 (see FIGS. 1 and 2).
  • the housing block 22 is designed somewhat differently (circular in cross section) and is provided with a threaded pin 23). This protrudes through a longitudinal groove 24 attached to the lateral straight bend 8 and thus enables the rotation of the housing block 22 about its longitudinal axis 25 as well as a longitudinal displacement in or against the direction of sheet travel 10.
  • the fixed connection can be made by means of the locking screw 26 be produced between the blowing device 21 and the lateral straight bend 8.
  • the second configuration option is particularly suitable if the adjustability of the blowing direction and the distance of the blowing device 21 from the leading edge 9 of the sheet is considered useful.
  • the curling of the leading edge 9 of the sheet can be prevented from being stretched under the action of the blowing air flow 20, the effective blowing air flow 20 having a certain scattering area 28, particularly in the plane parallel to the sheet plane.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Pile Receivers (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Discharge By Other Means (AREA)

Description

Die Erfindung betrifft eine Einrichtung in der Auslage von Bogenrotationsdruckmaschinen, um dem Einrollen der Bogenvorderkante entgegenwirken zu können.The invention relates to a device in the delivery of sheet-fed rotary printing machines to counteract the curling of the leading edge of the sheet.

Durch den einseitigen Farbauftrag auf einen Papierbogen erhält dieser eine von der Bogenvorder-bzw. Hinterkante ausgehende Rollneigung. Dieser Erscheinung kann man im wesentlichen mit sogenannten Bogenentrollern begegnen, welche für gewöhnlich ebenfalls in der Bogenauslage hinter der letzten Umführtrommel angeordnet sind. Diese Einrichtungen, bei denen meist zwischen zwei sich über die gesamte Bogenbreite erstreckende Rundstäbe und zwischen beiden ebenfalls über die gesamte Breite des Bogens wirkende Saugluft zur Anwendung kommt, sorgen in den meisten Fällen dafür, daß der bedruckte Papierbogen nahezu eben und ohne eingerollte Enden in die Bogenauslage gelangt.The one-sided application of ink to a sheet of paper gives it one of the sheet front or. Trailing outgoing curl. This phenomenon can essentially be countered with so-called sheet rollers, which are usually also arranged in the sheet delivery behind the last transfer drum. These devices, in which suction air is usually used between two round bars extending across the entire sheet width and between the two also across the entire width of the sheet, ensure in most cases that the printed paper sheet is almost flat and without curled ends in the Sheet delivery arrives.

Insbesondere aber bei mehrfarbig bedruckten und unter Umständen im letzten Druckwerk noch lackierten Papierbogen kann die Rollneigung allerdings derart ausgeprägt sein, daß es trotz vorgesehener Bogenentroller zum Einrollen der Bogenvorderkante kommt. Im übrigen benötigt auch ein noch so günstig positonierter Bogenentroller eine meßbare Änsaugzeit, so daß eine geschwindigkeitsabhängige Länge des Bogens von der Vorderkante aus noch zum Einrollen neigt. Selbst mittels Blasluft den Bogen zusätzlich auf den Bogenentroller zu blasen, bringt besonders bei mehrfarbig bedruckten und eventuell lackierten Papierbogen nicht den gewünschten Erfolg.In particular, however, in the case of paper sheets printed in multicolor and possibly still varnished in the last printing unit, the tendency to curl can be so pronounced that the sheet leading edge curls in spite of the sheet decelerator provided. In addition, a sheet trolley, however favorable it is positioned, requires a measurable suction time, so that a speed-dependent length of the sheet still tends to curl up from the front edge. Even blowing the sheet onto the sheet roller by means of blowing air does not bring the desired success, especially with paper sheets that are printed in several colors and possibly coated.

Gemäß der Arbeitsweise der Bogenausleger tritt das Einrollen der Bogenvorderkante unmittelbar nach dem Öffnen der die Bogen transportierenden Greifer auf, was dazu führen kann, daß gerade die Ecken der Bogenvorderkante bereits eingerollt sind, bevor der Abzulegende Papierbogen auf dem Stapel zu liegen kommt. Die Folge ist eine erhebliche Störung bei der Stapelbildung. Dies umso mehr, wenn obendrein mit einer recht hohen Druckgeschwindigkeit gearbeitet wird.According to the operation of the sheet delivery, the curling of the sheet leading edge occurs immediately after the opening of the gripper which transports the sheet, which can lead to the corners of the sheet leading edge having already been rolled up before the paper sheet to be deposited comes to lie on the stack. The result is a significant disturbance in the stack formation. This is all the more so if, on top of that, the printing speed is very high.

In Anbetracht dieser Problematik soll nun eine Einrichtung geschaffen werden, welche gegenüber den bisherigen Lösungsversuchen nun zuverlässig, auch unter extremen Betriebsbedingungen dem Einrollen der Bogenvorderkante des abzulegenden Bogens nach dessen Freigabe durch die Greifer entgegenwirkt.In view of this problem, a device is now to be created which, compared to previous attempts at solution, reliably counteracts, even under extreme operating conditions, the curling in of the leading edge of the sheet to be deposited after its release by the grippers.

Erfindungsgemäß wird dies dadurch erreicht, daß im, in Bogenlaufrichtung vorderen Bereich des Stapels in der Nähe der Bogenvorderkante des abzulegenden Bogens Blaseinrichtungen vorgesehen sind, über die jeweils ein gesteuerter Blasluftstrom mit einer Richtungskomponenten in Bogenlaufrichtung und einer weiteren gegen die Bogenmitte hin derart auf den Bogen gerichtet ist, daß dabei die Unterseite des absinkenden Bogens im Bereich der sich einrollenden Bogenvorderkante beaufschlagt wird.According to the invention, this is achieved in that in the front of the stack in the direction of the sheet in the vicinity of the sheet leading edge of the sheet to be blown blowing devices are provided, via which in each case a controlled blast air flow with one directional component in the sheet running direction and another directed towards the sheet center towards the sheet is that the underside of the sinking sheet is acted upon in the area of the curling sheet leading edge.

An sich ist schon bekannt (DE-PS-24 59 862), bei laufenden Warenbahnen, beispielsweise textilen Geweben oder Gewirken, Kunststoffolien, Papier usw. die Warenkanten zu glätten und auszurollen, wenn sie sich quer zur Bahn unter entsprechender Verringerung der Bahnbreite aus der Bahnebene heraus auf die eine oder andere Bahnseite umgebogen oder umgelegt insbesondere eingerollt haben. Dabei kommen Kantenausroller zur Anwendung, welche dadurch gekennzeichnet sind, daß eine Führungsfläche vorgesehen ist, an der die Warenbahn auf ihrer der Einrollseite abgewandten Bahnseite geführt ist und daß weiterhin eine Einrichtung zur Erzeugung eines die Rollkante ausrollenden Luftstromes vorgesehen ist, welcher auf der Einrollseite der Warenbahn im wesentlichen parallel zur Führungsfläche nach außen gegen die Rollkante gerichtet ist und sich in Bewegungsrichtung der Warenbahn längs der Rollkante über die Führungsfläche erstreckt.As such, it is already known (DE-PS-24 59 862) to smooth and roll out the edges of the goods when the material webs are running, for example textile fabrics or knitted fabrics, plastic films, paper, etc., when they move across the web with a corresponding reduction in the web width from the Rolled out or folded in particular rolled up on one or the other side of the web. Edge unrollers are used, which are characterized in that a guide surface is provided on which the web is guided on its web side facing away from the roll-in side and that a device is also provided for generating an air flow that rolls out the roll-up edge, which is on the roll-in side of the web is directed essentially parallel to the guide surface outwards against the roll edge and extends in the direction of movement of the web along the roll edge over the guide surface.

Um allerdings der Rollneigung von Papierbogen in der Auslage von Bogenrotationsdurckmaschinen entgegenwirken zu können, ist diese Einrichtung nicht geeignet, allein schon deshalb, weil dabei die abzulegenden Papierbogen sich nicht an der Blaseinrichtung vorbei nach unten auf den Stapel bewegen können.However, in order to counteract the tendency of paper sheets to curl in the delivery of sheet-fed rotary printing machines, this device is not suitable, if only because the paper sheets to be deposited cannot move down past the blowing device onto the stack.

Zwei Ausführungsformen der erfindungsgemäßen Einrichtung sind im folgenden anhand der Zeichnungen dargestellt.Two embodiments of the device according to the invention are shown below with reference to the drawings.

Dabei zeigt :

  • Figur 1 eine Seitenansicht eines Bogenauslegers, aus der die Position der erfindungsgemäßen Einrichtung ersichtlich ist,
  • Figur 2 die Draufsicht der Einrichtung nach Figur 1, aus der darüber hinaus die bevorzugte Blasrichtung der erfindungsgemäßen Einrichtung hervorgeht,
  • Figur 3 eine vergrößerte Darstellung der erfindungsgemäßen Blaseinrichtung aus der Ansicht nach Figur 2,
  • Figur 4 eine Seitenansicht der Einrichtung nach Figur 3,
  • Figur 5 eine weitere .Ausführungsform der Blaseinrichtung sowie
  • Figur 6 die Draufsicht der Ausführungsform nach Figur 5.
It shows:
  • FIG. 1 shows a side view of a sheet delivery, from which the position of the device according to the invention can be seen,
  • FIG. 2 shows the top view of the device according to FIG. 1, which also shows the preferred blowing direction of the device according to the invention,
  • FIG. 3 shows an enlarged illustration of the blowing device according to the invention from the view according to FIG. 2,
  • FIG. 4 shows a side view of the device according to FIG. 3,
  • FIG. 5 shows a further embodiment of the blowing device and
  • FIG. 6 shows the top view of the embodiment according to FIG. 5.

Aus der in den Figuren 1 und 2 dargestellten Seitenansicht bzw. Draufsicht eines Bogenauslegers 1 ist die vorgesehene Position der erfindungsgemäßen Blaseinrichtung 2 ersichtlich.The intended position of the blowing device 2 according to the invention can be seen from the side view or plan view of a sheet delivery 1 shown in FIGS. 1 and 2.

Der von dem nicht dargestellten letzten Druckwerk kommende Bogen 3 wird mittels Greifer 4 bis zu seiner Ablageposition oberhalb des Stapels 5 transportiert und danach freigegeben. Die im Bereich der Bogenhinterkante angeordneten Saugeinrichtungen 6 bremsen den Bogen 3 ab, während die oberhalb des abzulegenden Bogens 3 angeordneten Ventilatoren 7 die Ablage beschleunigen, indem sie die Sinkgeschwindigkeit erhöhen.The sheet 3 coming from the last printing unit, not shown, is transported by means of the gripper 4 to its storage position above the stack 5 and then released. The suction devices 6 arranged in the area of the trailing edge of the sheet brake the sheet 3, while the fans 7 arranged above the sheet 3 to be deposited accelerate the deposit by increasing the sinking speed.

Die zu beiden Seiten des abzulegenden Bogens 3 vorgesehenen Blaseinrichtungen 2,20 sind in den angegebenen Ausführungsbeispielen vorteilhafterweise an den seitlichen Bogengeradstoßern 8 angebracht. In der Nähe der Bogenvorderkante 9 angeordnet, blasen diese wie aus den Figuren 1 und 2 ersichtlich, in Bogenlaufrichtung 10 sowie gegen die Bogenmitte hin und im wesentlichen parallel zur Bogenebene.The blowing devices 2, 20 provided on both sides of the sheet 3 to be deposited are in the exemplary embodiments indicated advantageously attached to the lateral straight benders 8. Arranged near the leading edge 9 of the sheet, as shown in FIGS. 1 and 2, these blow in the direction of sheet travel 10 and towards the center of the sheet and essentially parallel to the plane of the sheet.

Figur 3 zeigt eine erste Ausführungsform der erfindungsgemäßen Blaseinrichtung 2. Dabei ist an den seitlichen Bogengeradstoßern 8 mittels entsprechender Befestigungsmittel 11,12 ein Haltebügel 13 befestigt. An diesem wiederum ist der Gehäuseblock 14 als wesentlicher Bestandteil der Blaseinrichtung 2 über Halteschrauben 15 befestigt. In eine Gewindebohrung 16 des Gehäuseblockes 14 ist das die Luftzufuhr regulierende Absperrventil 17 eingeschraubt. Der daran angeschlossene Schlauch 18 stellt die Verbindung zur nichtdargestellten Blasluftquelle her. Die in den Gehäuseblock 14 eingearbeiteten Luftaustrittsbohrungen 19 münden in die Gewindebohrung 16 und sorgen zusammen mit dieser für die gewünschte Führung des Blasluftstromes 20.FIG. 3 shows a first embodiment of the blowing device 2 according to the invention. In this case, a holding bracket 13 is fastened to the lateral straight bend pushers 8 by means of corresponding fastening means 11, 12. On this in turn, the housing block 14 is attached as an essential part of the blowing device 2 by means of retaining screws 15. The air supply regulating shut-off valve 17 is screwed into a threaded bore 16 of the housing block 14. The hose 18 connected to it establishes the connection to the blown air source, not shown. The air outlet bores 19 incorporated into the housing block 14 open into the threaded bore 16 and, together with this, ensure the desired guidance of the blown air stream 20.

Die in Figur 4 dargestellte Seitenansicht der Einrichtung gemäß Figur 3 dient der Verdeutlichung des konstruktiven Aufbaus.The side view of the device according to FIG. 3 shown in FIG. 4 serves to clarify the construction.

Die Figuren 5 und 6 zeigen in Seitenansicht bzw.. Draufsicht eine weitere Ausgestaltungsmöglichkeit der erfindungsgemäßen Blaseinrichtung 21. Auch hier wiederum ist dieselbe zu beiden Seiten des Papierbogens 3 an den seitlichen Bogengeradstoßern 8 angeordnet (siehe Figur 1 und 2). Die wesentlichen Unterschiede zur Ausführungsform gemäß Figuren 3 und 4 besteht darin, daß der Gehäuseblock 22 etwas anders gestaltet (im Querschnitt kreisförmig) sowie mit einem Gewindezapfen 23) versehen ist. Dieser ragt durch eine, am seitlichen bogengeradstoßer 8 angebrachte Längsnut 24 hindurch und ermöglicht somit die Drehung des Gehäuseblockes 22 um seine Längsachse 25 als auch eine Längsverschiebung in bzw. gegen Bogenlaufrichtung 10. Ist die gewählte Einstellung erreicht, so kann mittels Feststellschraube 26 die feste Verbindung zwischen Blaseinrichtung 21 und seitlichem Bogengeradstoßer 8 hergestellt werden.FIGS. 5 and 6 show a side view and a top view, respectively, of another design option for the blowing device 21 according to the invention. Here again, the same is arranged on both sides of the paper sheet 3 on the lateral sheet straight pushers 8 (see FIGS. 1 and 2). The main differences from the embodiment according to FIGS. 3 and 4 are that the housing block 22 is designed somewhat differently (circular in cross section) and is provided with a threaded pin 23). This protrudes through a longitudinal groove 24 attached to the lateral straight bend 8 and thus enables the rotation of the housing block 22 about its longitudinal axis 25 as well as a longitudinal displacement in or against the direction of sheet travel 10. When the selected setting is reached, the fixed connection can be made by means of the locking screw 26 be produced between the blowing device 21 and the lateral straight bend 8.

Die zweite Ausgestaltungsmöglichkeit eignet sich dann in bevorzugter Weise, wenn die Einstellbarkeit der Blasrichtung sowie des Abstandes der Blaseinrichtung 21 von der Bogenvorderkante 9 für sinnvoll erachtet wird.The second configuration option is particularly suitable if the adjustability of the blowing direction and the distance of the blowing device 21 from the leading edge 9 of the sheet is considered useful.

Mit beiden Ausgestaltungsmöglichkeiten kann das Einrollen der Bogenvorderkante 9 dahingehend verhindert werden, daß selbige unter Einwirkung des Blasluftstromes 20 gestreckt wird, wobei der wirksame Blasluftstrom 20 besonders in der zur Bogenebene parallelen Ebene einen gewissen Streubereich 28 aufweist.With both design options, the curling of the leading edge 9 of the sheet can be prevented from being stretched under the action of the blowing air flow 20, the effective blowing air flow 20 having a certain scattering area 28, particularly in the plane parallel to the sheet plane.

Auf die Zufuhr der Blasluft zu den Blaseinrichtungen sowie die Steuerung von Menge und Wirkungsdauer derselben ist in der Beschreibung und in den Zeichnungen nicht näher eingegangen worden. Dabei dürfte die Steuerung der Luftmenge in Abhängigkeit vom Bedruckstoff (z. B. mittels Drosselventil) dem Fachmann keine Schwierigkeiten bereiten.The supply of the blowing air to the blowing devices and the control of the amount and duration of action thereof have not been discussed in detail in the description and in the drawings. The control of the air volume depending on the substrate (e.g. by means of a throttle valve) should not pose any difficulties for the specialist.

Weiterhin ist es ohne weiteres möglich, beispielsweise über ein Drehventil, den Blasluftstrom dahingehend zu steuern, daß dieser in einem begrenzten, für die Funktion der Blaseinrichtung aber für ausreichend erachteten Zeitintervall wirkt.

Figure imgb0001
Furthermore, it is readily possible, for example via a rotary valve, to control the blown air flow in such a way that it acts within a limited time interval, which is considered sufficient for the function of the blower device.
Figure imgb0001

Claims (8)

1. Characterizing feature of a device in the delivery station of sheet rotation printing machines to counteract curling-up of the front edge (9) of the sheet is that blower devices (2, 21) are provided, in the running direction of the sheet (10), in the front area of the stack (5) near the front edge (9) of the sheet (3) to be discharged. The said blower devices provide a controlled flow of air (20) with one direction component in the sheet running direction (10) and one further component directed at the centre of the sheet (3) in such a way that the underside of the descending sheet (3) is supported in the area of the front edge (9) of the sheet which tends to curl in.
2. Characterizing feature of device in accordance with Claim 1 is that, essentially, the blowing direction is parallel to the sheet plane, and the flow of blown air (20) features, particularly in the sheet plane, a certain dispersion area (28).
3. Characterizing feature of device in accord· ance with Claim 1 is that the flow of blown air (20) can act continuously or in regular time intervalls, matching the sheet discharge rate.
4. Characterizing feature of device in accordance with one or several of the Claims 1 to 3 is that the blower device (2, 21) for producing the flow of air (20) comprises a housing block (14, 22), featuring a threaded hole (16) and air outlet holes (19). The said housing block provides the air supply via hose connection (18) and shut-off valve (17) and is secured to the lateral sheet joggers (8) by means of the mounting elements (11, 12, 15, 26).
5. Characterizing feature of device in accordance Claim 4 is that the cross-section of the cylindrical housing block (14) is essentially rectangular, with a retaining bracket (13) secured to one side by means 6f retaining screws (15), establishing, in conjunction with securing screw (11) and nut (12), the connection to the lateral sheet jogger (8) and the air outlet holes (19) are arranged in an inclined section (27) of this side of the rectangle.
6. Characterizing feature of device in accordance with Claim 4 is that the cross-section of the cylindrical housing block (22) is of circular design and features a threaded pin (23) which projects through a slot (24) arranged on the lateral sheet jogger (8) and establishes, in conjunction with a fixing screw (26), the positive connection to the lateral sheet jogger (8).
7. Characterizing feature of device in accordance with Claim 6 is that the blower device (21) can be shifted in or opposite the sheet running direction (10) and fixed in position in the slot (24) of the lateral sheet jogger (8).
8. Characterizing feature of device in accordance with Claim 6 is that the blower device (21) can be swiveled about its longitudinal axis (25) and fixed in position.
EP82106104A 1981-08-01 1982-07-08 Device for preventing the curling-up of the front edges of sheets in a delivery apparatus for a rotary sheet-printing machine Expired EP0071769B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19813130623 DE3130623A1 (en) 1981-08-01 1981-08-01 DEVICE IN THE DISPLAY OF ARC ROTATION PRINTING MACHINES TO COUNTER THE ROLLING IN OF THE ARC FRONT EDGE
DE3130623 1981-08-01

Publications (2)

Publication Number Publication Date
EP0071769A1 EP0071769A1 (en) 1983-02-16
EP0071769B1 true EP0071769B1 (en) 1985-09-18

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EP82106104A Expired EP0071769B1 (en) 1981-08-01 1982-07-08 Device for preventing the curling-up of the front edges of sheets in a delivery apparatus for a rotary sheet-printing machine

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US (1) US4561645A (en)
EP (1) EP0071769B1 (en)
JP (1) JPS5831831A (en)
AT (1) AT384583B (en)
DE (1) DE3130623A1 (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4702468A (en) * 1981-08-01 1987-10-27 Heidelberger Druckmaschinen Ag Device in the delivery of sheet-fed rotary printing machine for exhibiting curl formation on the leading edge of a delivered sheet
DE3535113A1 (en) * 1985-10-02 1987-04-23 Jagenberg Ag BOW DEPOSIT
DE3634400A1 (en) * 1986-10-09 1988-04-14 Heidelberger Druckmasch Ag BOW BOOM ON ROTARY PRINTING MACHINES
JP2503118Y2 (en) * 1989-06-22 1996-06-26 株式会社小森コーポレーション Paper ejection device for sheet-fed printing press
FR2656571B1 (en) * 1989-12-29 1992-05-07 Oce Graphics France DEVICE FOR SECONDARY GUIDANCE OF A PRINTING MEDIUM ON A DRAWING MACHINE.
GB2255078B (en) * 1991-04-24 1994-11-23 Ricoh Kk Paper discharging apparatus
US5201514A (en) * 1992-04-06 1993-04-13 Xerox Corporation Apparatus for decurling a sheet
US5357327A (en) * 1992-04-06 1994-10-18 Xerox Corporation Sheet decurling system including cross-curl
US5153662A (en) * 1992-04-06 1992-10-06 Xerox Corporation Sheet decurling apparatus
DE29906505U1 (en) * 1999-04-13 1999-08-26 MAN Roland Druckmaschinen AG, 63075 Offenbach Boom for a sheet-fed rotary printing machine
US7726649B2 (en) * 2005-06-07 2010-06-01 Xerox Corporation Air drag cooler for sheet transport apparatus
JP2007261804A (en) * 2006-03-30 2007-10-11 Mitsubishi Heavy Ind Ltd Discharging device for sheet printer
JP4970127B2 (en) * 2007-04-27 2012-07-04 デュプロ精工株式会社 Paper receiving device
JP5783164B2 (en) * 2012-03-02 2015-09-24 株式会社リコー Paper discharge device and image forming system

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1465385A (en) * 1919-07-12 1923-08-21 Hall Printing Press Company Sheet-delivery mechanism
USRE16779E (en) * 1923-07-07 1927-11-01 Apparatus por piling sheets op paper
GB284911A (en) * 1927-05-19 1928-02-09 George Edward Maxner Improvements in apparatus for piling sheets of paper and other light material successively delivered thereto
US1743921A (en) * 1927-12-17 1930-01-14 Claybourn Process Corp Method of drying freshly-printed sheets and apparatus therefor
US1902436A (en) * 1931-08-03 1933-03-21 Herman L Joachim Method of and apparatus for stacking sheets
US2299259A (en) * 1940-09-09 1942-10-20 Miehle Printing Press & Mfg Sheet delivery means
DE842647C (en) * 1950-08-26 1952-06-30 Maschf Augsburg Nuernberg Ag Delivery device for sheet-fed printing machines
GB901906A (en) * 1958-12-15 1962-07-25 Linotype Machinery Ltd Improvements relating to sheet delivery for printing machines
DE1253035B (en) * 1962-06-29 1967-10-26 Jagenberg Werke Ag Device for cutting overlapped sheets fed by a cross cutter
FR2274527A1 (en) * 1974-06-11 1976-01-09 Bertin & Cie DEVICE FOR CARRYING LETTERS, POSTAL POSTS OR OTHER THIN OBJECTS
US4073001A (en) * 1975-10-31 1978-02-07 Xerox Corporation Apparatus for neutralizing and registering an electrostatically charged sheet
JPS5589154A (en) * 1978-12-28 1980-07-05 Tokyo Ink Kk Blowing device of air between sheet
DD141150B1 (en) * 1979-02-14 1981-10-28 Hans Zimmermann BULBING DEVICE IN BENDERS OF ARC-MACHINING MACHINES
US4372550A (en) * 1981-04-30 1983-02-08 Woods Kenneth D Air flow delivery system

Also Published As

Publication number Publication date
DE3130623A1 (en) 1983-02-10
US4561645A (en) 1985-12-31
AT384583B (en) 1987-12-10
JPS6311262B2 (en) 1988-03-12
EP0071769A1 (en) 1983-02-16
ATA281882A (en) 1987-05-15
JPS5831831A (en) 1983-02-24

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