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EP0225994B1 - Method and device for slowing down and spreading sheets or parcels of sheets printed in a printing machine - Google Patents

Method and device for slowing down and spreading sheets or parcels of sheets printed in a printing machine Download PDF

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Publication number
EP0225994B1
EP0225994B1 EP86114637A EP86114637A EP0225994B1 EP 0225994 B1 EP0225994 B1 EP 0225994B1 EP 86114637 A EP86114637 A EP 86114637A EP 86114637 A EP86114637 A EP 86114637A EP 0225994 B1 EP0225994 B1 EP 0225994B1
Authority
EP
European Patent Office
Prior art keywords
sheet
sheets
gripper
grippers
cylinder
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
EP86114637A
Other languages
German (de)
French (fr)
Other versions
EP0225994A1 (en
Inventor
Godber Petersen
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 EP0225994A1 publication Critical patent/EP0225994A1/en
Application granted granted Critical
Publication of EP0225994B1 publication Critical patent/EP0225994B1/en
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
    • B65H29/66—Advancing articles in overlapping streams
    • B65H29/6609—Advancing articles in overlapping streams forming an overlapping stream
    • 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
    • B65H29/38—Delivering or advancing articles from machines; Advancing articles to or into piles by movable piling or advancing arms, frames, plates, or like members with which the articles are maintained in face contact
    • B65H29/40—Members rotated about an axis perpendicular to direction of article movement, e.g. star-wheels formed by S-shaped members
    • 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
    • B65H29/68—Reducing the speed of articles as they advance
    • 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
    • B65H2301/447—Moving, forwarding, guiding material transferring material between transport devices
    • B65H2301/4473—Belts, endless moving elements on which the material is in surface contact
    • B65H2301/44732—Belts, endless moving elements on which the material is in surface contact transporting articles in overlapping stream
    • 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
    • B65H2301/447—Moving, forwarding, guiding material transferring material between transport devices
    • B65H2301/44765—Rotary transport devices with compartments

Definitions

  • the invention relates to a method according to the preamble of claim 1.
  • DE-OS 25 53 518 a generic device is known with the sheet are forcibly turned in that the led with the leading edge on the gripper each by means of one over the entire Tray extending transport device is pushed.
  • GB patent specification 747 444 it is also known to grasp and lay out the sheets or sheet packages coming from a folder with a rotating gripper cylinder.
  • the generally known prior art also includes the use of rotating paddle wheels. to use their shovels to brake folded products, i.e. sheets and packets of sheets that have been printed in a printing press and further processed in a folder, and to be scaled out on delivery belts.
  • the object of the invention is therefore to provide a method by means of which braking of sheets or packs of sheets which can be fed in at high speed is made possible in the smallest space with simultaneous design, the risk of deformation of the leading edge of the sheet and the bouncing back of the sheets or Bow packages should be avoided.
  • This object is achieved by the application of the characterizing part of patent claim 1. Further developments of the invention result from the subclaims and from the description in conjunction with the drawings.
  • the invention is based on the novel general principle of using, at a defined speed, clock-controlled stop grippers in a gripper cylinder which bend the sheets or sheet packs before braking, so that, using the bow centrifugal forces with almost complete braking, a turn of the sheet while maintaining the original transport direction he follows.
  • the sheet can also be curved by stationary aids, such as baffles, before it is gripped by the grippers of the gripper cylinder at the front edge.
  • the main advantage in comparison to all known braking and alignment systems is that the kinetic energy inherent in the sheet or the sheet packs is no longer destroyed by impact and deformation in the grippers of the slower-running gripper cylinder, but rather that this curvature and ultimately a turn the bow or sheet packets causes, the air cushion acting here also contributes to the braking of the sheet during the deforming and turning process.
  • FIGS. 1, 4 and 5 show a sheet (1) to be braked in various positions, the reference numerals (1a 1i) being used for this.
  • a sheet (1a) coming from the right out of a strip line is preferably fed in an approximately horizontal plane via a feed plate (3a) to a rotating gripper cylinder (4) which is equipped with at least one gripper system running in its axial direction.
  • the grippers (5) preferably have relatively long gripper tongues which are used to curve the leading sheet edge of an incoming sheet (1), as can be seen from item 1c.
  • the gripper positions assigned to the individual sheet positions (1a to 1i) are designated by (5a to 5i).
  • the gripper cylinder (4) must inevitably run slower than the ribbon line (2) feeding the sheets or sheet packs.
  • the leading sheet edge is shown in the positions (1 to 1f), in which the sheet leading edge gradually approaches the gripper, which also serves as a stop, which is best seen from the assigned gripper positions (5b to 5f) in Fig. 4. It is essential here that the leading edge of the sheet is preferably deflected downward, that is, curved, starting at (1c). In the sheet position (1f) the assigned gripper position (5f) detects the sheet. The kinetic energy inherent in the arch or a bundle of arches now applies a force which is initially directed approximately straight and which further bends the arch, as indicated in (1g). This force is centered around (16).
  • the one at the Gripper position (5f) detected sheet (1f) is then passed at the rear edge through baffles (3b or 3c), after which the sheet is turned under partial guidance in the gripper cylinder (4) during further transport in the direction of arrow (11), ie around Is rotated 180 ° so that the original rear sheet end is now the sheet front end and the original sheet front end is now the sheet rear end if the sheet deposited by the slower-running gripper cylinder (4) on the delivery belt (16) is preferably laid out in a scale-like manner.
  • the air resistance opposing this process has a particularly advantageous effect.
  • the gripper cylinder (4) is mounted together with a belt roller (8) in side walls (9 and 10) (Fig.2).
  • the gripper cylinder (4) which is driven in the direction of the arrow (11), in turn drives a belt roller (8) via toothed belt (12), which moves the delivery belts (6) in the direction of the arrow (7).
  • the grippers (5) sit on gripper spindles (13), of which they are controlled by a cam disc (15) via a cam roller (14) for timely closing and opening.
  • the sheet (1a) fed at high speed via the belt line (2) is therefore braked and turned by the slower-running gripper cylinder (4), after which it is placed on the delivery belt (6) operated at low speed, whereby, as already mentioned, the delivery is preferably scaled.
  • the grippers (5) can already open in the position (5h) so that they release the sheet on the stop tongues (20) before reaching the position (5i). Since the inertial forces push in the direction of arrow (19), the striking of the sheet (1 i) on the stop tongues (20), which are stationary, is alleviated and at the same time the direction of movement of the sheet in the direction of arrow (7) of the delivery belt ( 6) supports. It can be advantageous that the gripper cylinder can be adjusted backwards and forwards to adapt to the takeover process while running by corresponding, generally known means, which do not need to be explained in detail here, since they are not part of the invention.
  • a belt roller (18) arranged in the belt line (2) should be adjustable into position (18a).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Discharge By Other Means (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Registering Or Overturning Sheets (AREA)

Description

Die Erfindung betrifft ein Verfahren nach dem Oberbegriff des Anspruchs 1. Aus der DE-OS 25 53 518 ist eine gattungsgemäße Vorrichtung bekannt, mit der Bogen zwangsweise dadurch gewendet werden, daß der mit der Vorderkante am Greifer geführte Bogen jeweils mittels einer sich über die gesamte Ablage erstreckende Transportvorrichtung geschoben wird. Aus der GB-Patentschrift 747 444 ist es auch bekannt, die aus einem Falzapparat kommenden Bogen oder Bogenpakete mit einem rotierenden Greiferzylinder zu erfassen und auszulegen. Zum allgemein bekannten Stand der Technik gehört des weiteren die Verwendung von rotierenden Schaufelrädern. um mit deren Schaufeln Falzprodukte, also Bogen und Bogenpakete, die in einer Druckmaschine bedruckt und in einem Falzapparat weiterbearbeitet wurden, abzubremsen und geschuppt auf Auslegebänder auszulegen. Diese bekannten Vorrichtungen weisen allesamt den Nachteil auf, daß beim Auftreffen der Bogen in den entsprechenden Taschen, Greifern oder sonstigen Anschlagleisten von langsamer laufenden rotierenden Zylindern eine Stauchung an der Bogenvorderkante und unter Umständen ein Rückprall der Bogen oder Bogenpakete zu befürchten ist. Dies gilt auch für die rotierende, zwischen zwei mit unterschiedlicher Geschwindigkeit laufenden Bandleitungen angeordneten Ausricht- und Abbremsleiste gemäß der DE-Patentschrift 27 50 792.The invention relates to a method according to the preamble of claim 1. From DE-OS 25 53 518 a generic device is known with the sheet are forcibly turned in that the led with the leading edge on the gripper each by means of one over the entire Tray extending transport device is pushed. From GB patent specification 747 444 it is also known to grasp and lay out the sheets or sheet packages coming from a folder with a rotating gripper cylinder. The generally known prior art also includes the use of rotating paddle wheels. to use their shovels to brake folded products, i.e. sheets and packets of sheets that have been printed in a printing press and further processed in a folder, and to be scaled out on delivery belts. These known devices all have the disadvantage that when the sheet hits the corresponding pockets, grippers or other stop bars of slower rotating cylinders, compression at the leading edge of the sheet and possibly a rebound of the sheet or sheet packs is to be feared. This also applies to the rotating alignment and braking bar arranged between two ribbon lines running at different speeds according to DE patent specification 27 50 792.

Aufgabe der Erfindung ist es deshalb, ein Verfahren aufzuzeigen, mit dem eine Abbremsung von Bogen oder Bogenpaketen, die mit hoher Geschwindigkeit zugeführt werden können, auf kleinstem Raum bei gleichzeitiger Auslegung ermöglicht wird, wobei die Gefahr der Deformierung der Bogenvorderkante und das Rückprallen der Bogen bzw. Bogenpakete vermieden werden soll. Diese Aufgabe wird durch die Anwendung des kennzeichnenden Teils des Patentanspruchs 1 gelöst. Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und aus der Beschreibung in Verbindung mit den Zeichnungen.The object of the invention is therefore to provide a method by means of which braking of sheets or packs of sheets which can be fed in at high speed is made possible in the smallest space with simultaneous design, the risk of deformation of the leading edge of the sheet and the bouncing back of the sheets or Bow packages should be avoided. This object is achieved by the application of the characterizing part of patent claim 1. Further developments of the invention result from the subclaims and from the description in conjunction with the drawings.

Der Erfindung liegt das neuartige allgemeine Prinzip zugrunde, mit definierter Geschwindigkeit taktförmig gesteuerte Anschlaggreifer in einem Greiferzylinder einzusetzen, die die Bogen bzw. Bogenpakete vor dem Abbremsen krümmen, so daß in Ausnützung der Bogenfliehkräfte unter nahezu vollständiger Abbremsung eine Wendung des Bogens unter Beibehaltung der ursprünglichen Transportrichtung erfolgt. Wahlweise kann der Bogen auch durch stationäre Hilfsmittel, wie Ablenkbleche, gekrümmt werden, bevor er an der Vorderkante durch die Greifer des Greiferzylinders erfaßt wird. Der wesentliche Vorteil im Vergleich zu allen bekannten Abbrems- und Ausrichtsystemen liegt darin, daß die im Bogen oder den Bogenpaketen innewohnende kinetische Energie nicht mehr durch Aufprallen und Deformieren in den Greifern des langsamer laufenden Greiferzylinders vernichtet wird, sondern daß diese eine Krümmung und letztlich eine Wendung der Bogen oder Bogenpakete bewirkt, wobei auch das hierbei wirkende Luftpolster beim Deformier- und Wendevorgang zur Abbremsung des Bogens beiträgt.The invention is based on the novel general principle of using, at a defined speed, clock-controlled stop grippers in a gripper cylinder which bend the sheets or sheet packs before braking, so that, using the bow centrifugal forces with almost complete braking, a turn of the sheet while maintaining the original transport direction he follows. Optionally, the sheet can also be curved by stationary aids, such as baffles, before it is gripped by the grippers of the gripper cylinder at the front edge. The main advantage in comparison to all known braking and alignment systems is that the kinetic energy inherent in the sheet or the sheet packs is no longer destroyed by impact and deformation in the grippers of the slower-running gripper cylinder, but rather that this curvature and ultimately a turn the bow or sheet packets causes, the air cushion acting here also contributes to the braking of the sheet during the deforming and turning process.

Im folgenden wird die Erfindung anhand eines Ausführungsbeispieles im einzelnen beschrieben, wobei Bezug auf die beiliegenden Zeichnungen genommen wird. In diesen zeigen :

  • Fig. 1 eine Seitenansicht einer Abbremsvorrichtung zur Durchführung des erfindungsgemäßen Verfahrens,
  • Fig. 2 einen Schnitt entlang der Linie I-I der Fig. 1.
  • Fig. 3 einen Schnitt durch den Greiferzylinder entlang der Linie II-II der Fig. 2,
  • Fig. 4 einen vergrößerten Ausschnitt zur Darstellung der Übernahmefolge eines Bogens durch den Greiferzylinder und
  • Fig. 5 einen vergrößerten Ausschnitt der Bogenerfassungsstelle im Moment des Abbremsens.
In the following the invention is described in detail using an exemplary embodiment, reference being made to the accompanying drawings. In these show:
  • 1 is a side view of a braking device for performing the method according to the invention,
  • 2 shows a section along the line II of FIG. 1st
  • 3 shows a section through the gripper cylinder along the line II-II of FIG. 2,
  • Fig. 4 is an enlarged section to show the takeover sequence of a sheet through the gripper cylinder and
  • Fig. 5 shows an enlarged section of the sheet detection point at the moment of braking.

In den Figuren 1,4 und 5 wird ein abzubremsender Bogen (1) in verschiedenen Positionen dargestellt, wobei für diesen die Bezugszeichen (1a 1i) verwendet werden. Ein von rechts aus einer Bandleitung kommender Bogen (1a) wird vorzugsweise in einer etwa horizontalen Ebene über ein Zuführblech (3a) einem rotierenden Greiferzylinder (4) zugeführt, der mindestens mit einem in dessen Achsrichtung verlaufenden Greifersystem ausgestattet ist. Einer dieser Greifer ist in Fig. 3 mit (5) bezeichnet. Gegebenenfalls kann auch diametrisch zu diesem ein weiterer Greifer bzw. ein weiteres sich in Achsrichtung erstreckendes Greifersystem, bestehend aus mehreren nebeneinander angeordneten Greifern verwendet werden. Vorzugsweise weisen die Greifer (5) relativ lange Greiferzungen auf, die zur Krümmung der vorauslaufenden Bogenkante eines ankommenden Bogens (1) verwendet werden, wie aus Pos.lc ersichtlich ist. Die den einzelnen Bogenpositionen (1a bis 1i) zugeordneten Greiferpositionen sind mit (5a bis 5i) bezeichnet. Zwangsweise muß der Greiferzylinder (4) langsamer laufen als die die Bogen bzw. Bogenpakete zuführende Bandleitung (2).FIGS. 1, 4 and 5 show a sheet (1) to be braked in various positions, the reference numerals (1a 1i) being used for this. A sheet (1a) coming from the right out of a strip line is preferably fed in an approximately horizontal plane via a feed plate (3a) to a rotating gripper cylinder (4) which is equipped with at least one gripper system running in its axial direction. One of these grippers is labeled (5) in FIG. 3. If necessary, a further gripper or a further gripper system extending in the axial direction, consisting of a plurality of grippers arranged next to one another, can also be used diametrically to this. The grippers (5) preferably have relatively long gripper tongues which are used to curve the leading sheet edge of an incoming sheet (1), as can be seen from item 1c. The gripper positions assigned to the individual sheet positions (1a to 1i) are designated by (5a to 5i). The gripper cylinder (4) must inevitably run slower than the ribbon line (2) feeding the sheets or sheet packs.

Die vorauslaufende Bogenkante ist jeweils in den Positionen (1 bis 1f) dargestellt, in denen sich die Bogenvorderkante sukzessive dem auch als Anschlag dienenden Greifer nähert, was aus den zugeordneten Greiferpositionen (5b bis 5f) in Fig. 4 am besten ersichtlich ist. Hierbei ist es wesentlich, daß die Bogenvorderkante vorzugsweise nach unten abgelenkt, d. h. gekrümmt wird, beginnend bei (1c). In der Bogenposition (1f) wird durch die zugeordnete Greiferposition (5f) der Bogen erfaßt. Durch die dem Bogen oder einem Bogenpaket innewohnende kinetische Energie wird nunmehr eine zunächst etwa geradeaus gerichtete Kraft wirksam, die den Bogen, wie bei (1g) angedeutet, weiter krümmt. Diese Kraft weist etwa bei (16) ihren Schwerpunkt auf. Der bei der Greiferposition (5f) erfaßte Bogen (1f) wird dann an der Hinterkante weiter durch Ablenkbleche (3b bzw. 3c) geführt, wonach beim Weitertransport in Richtung des Pfeiles (11) der Bogen unter teilweiser Führung in dem Greiferzylinder (4) gewendet, d. h. um 180° gedreht wird, so daß das ursprüngliche hintere Bogenende nunmehr das Bogenvorderende und das ursprüngliche Bogenvorderende nunmehr das Bogenhinterende wird, wenn der durch den langsamer laufenden Greiferzylinder (4) auf das Auslegeband (16) abgelegte Bogen vorzugsweise schuppenformig ausgelegt wird. Bei diesem Wende- und Abbremsvorgang wirkt sich besonders der diesem Vorgang entgegenstehende Luftwiderstand vorteilhaft aus. In der Bogenposition (5i) wird der Bogen freigegeben, so daß er sich anschließend an stationären Anschlagzungen (20) ausrichten kann, wobei, wie durch den Pfeil (19) angedeutet, durch die kinetisch Energie sich der Bogen streckt und das vordere Ende satt auf dem Auslegeband (6) zum Aufliegen kommt, das in Richtung des Pfeiles (7) bewegt wird.The leading sheet edge is shown in the positions (1 to 1f), in which the sheet leading edge gradually approaches the gripper, which also serves as a stop, which is best seen from the assigned gripper positions (5b to 5f) in Fig. 4. It is essential here that the leading edge of the sheet is preferably deflected downward, that is, curved, starting at (1c). In the sheet position (1f) the assigned gripper position (5f) detects the sheet. The kinetic energy inherent in the arch or a bundle of arches now applies a force which is initially directed approximately straight and which further bends the arch, as indicated in (1g). This force is centered around (16). The one at the Gripper position (5f) detected sheet (1f) is then passed at the rear edge through baffles (3b or 3c), after which the sheet is turned under partial guidance in the gripper cylinder (4) during further transport in the direction of arrow (11), ie around Is rotated 180 ° so that the original rear sheet end is now the sheet front end and the original sheet front end is now the sheet rear end if the sheet deposited by the slower-running gripper cylinder (4) on the delivery belt (16) is preferably laid out in a scale-like manner. In this turning and braking process, the air resistance opposing this process has a particularly advantageous effect. In the bow position (5i) the bow is released so that it can then be aligned with stationary stop tongues (20), whereby, as indicated by the arrow (19), the kinetic energy causes the bow to stretch and the front end to be full the delivery belt (6) comes to rest, which is moved in the direction of the arrow (7).

Der Greiferzylinder (4) ist zusammen mit einer Gurtwalze (8) in Seitenwänden (9 und 10) (Fig.2) gelagert. Der in Pfeilrichtung (11) angetriebene Greiferzylinder (4) treibt seinerseits über Zahnriemen (12) eine Gurtwalze (8) an, die die Auslegebänder (6) in Richtung des Pfeiles (7) bewegt. Wie aus den Figuren (2 und 3) hervorgeht, sitzen die Greifer (5) auf Greiferspindeln (13), von denen sie über eine Kurvenrolle (14) von einer Kurvenscheibe (15) zum zeitgerechten Schließen und Öffnen gesteuert werden.The gripper cylinder (4) is mounted together with a belt roller (8) in side walls (9 and 10) (Fig.2). The gripper cylinder (4), which is driven in the direction of the arrow (11), in turn drives a belt roller (8) via toothed belt (12), which moves the delivery belts (6) in the direction of the arrow (7). As can be seen from the figures (2 and 3), the grippers (5) sit on gripper spindles (13), of which they are controlled by a cam disc (15) via a cam roller (14) for timely closing and opening.

Der mit hoher Geschwindigkeit über die Bandleitung (2) zugeführte Bogen (1a) wird also durch den langsamer laufenden Greiferzylinder (4) abgebremst und gewendet, wonach er auf das mit geringer Geschwindigkeit betriebene Auslegeband (6) gelegt wird, wobei, wie bereits erwähnt, die Auslage vorzugsweise schuppenförmig erfolgt.The sheet (1a) fed at high speed via the belt line (2) is therefore braked and turned by the slower-running gripper cylinder (4), after which it is placed on the delivery belt (6) operated at low speed, whereby, as already mentioned, the delivery is preferably scaled.

Insbesondere aus Fig.5 ist erkennbar, daß beim Anschlagen der Bogenvorderkante des gekrümmten Bogens (1f) sich dessen Schwerpunkt (16) zunächst mit nahezu unveränderter Geschwindigkeit in Richtung des Pfeiles (17) bewegt. Damit ist in vorteilhafter Weise die Hauptmasse des Bogens (1f) nicht am Aufprall beteiligt, wenn seine Vorderkante in der Pos. (1f) im Greifer anläuft. Somit wird die Gefahr einer Beschädigung der Bogenvorderkante und die Gefahr eines Rückpralles wesentlich gemildert. Der Bogen wird zunehmend durch das Luftpolster in Richtung seiner Massenkräfte abgebremst, so daß seine kinetische Energie dadurch und durch die Deformierung, d. h. das Aufwölben des Bogens selbst, reduziert wird. Wie aus Fig.1 und 4 hervorgeht, wird er dabei durch die Ablenkbleche (3b bzw. 3c) geführt, die vorzugsweise zwecks Anpassung in der Höhe und das Ablenkblech (3c) zusätzlich in der Neigung verstellbar sein sollen. Die Greifer (5) können bereits in der Stellung (5h) mit dem Öffnen beginnen, so daß sie vor Erreichen der Stellung (5i) an den Anschlagzungen (20) den Bogen freigeben. Da die Massenkräfte in Richtung des Pfeiles (19) drängen, wird das Anschlagen des Bogens (1 i) an den Anschlagzungen (20), die stationär sind, gemildert und gleichzeitig wird die Bewegungsrichtung des Bogens in Richtung des Pfeiles (7) des Auslegebandes (6) unterstützt. Es kann vorteilhaft sein, daß zur Anpassung an den Übernahmevorgang der Greiferzylinder während des Laufens durch entsprechende, allgemein bekannte Mittel, die hier nicht näher erläutert werden müssen, da sie nicht selbst zur Erfindung gehören, vor- und zurückstellbar ist.It can be seen in particular from FIG. 5 that when the curved front edge of the curved sheet (1f) strikes, its center of gravity (16) initially moves in the direction of the arrow (17) at an almost unchanged speed. The main mass of the sheet (1f) is therefore advantageously not involved in the impact if its front edge in position (1f) runs into the gripper. This significantly reduces the risk of damage to the leading edge of the sheet and the risk of a rebound. The arc is increasingly braked by the air cushion in the direction of its mass forces, so that its kinetic energy and the deformation, i. H. the arching of the arch itself is reduced. As can be seen from FIGS. 1 and 4, it is guided through the deflection plates (3b or 3c), which should preferably be adjustable in height and the inclination of the deflection plate (3c) preferably for the purpose of adjustment. The grippers (5) can already open in the position (5h) so that they release the sheet on the stop tongues (20) before reaching the position (5i). Since the inertial forces push in the direction of arrow (19), the striking of the sheet (1 i) on the stop tongues (20), which are stationary, is alleviated and at the same time the direction of movement of the sheet in the direction of arrow (7) of the delivery belt ( 6) supports. It can be advantageous that the gripper cylinder can be adjusted backwards and forwards to adapt to the takeover process while running by corresponding, generally known means, which do not need to be explained in detail here, since they are not part of the invention.

Um den Transport des Bogens (1) bis in die Position (1f) zu gewährleisten, sollte eine in der Bandleitung (2) angeordnete Bandwalze (18) in die Position (18a) verstellbar sein.In order to ensure the transport of the sheet (1) into position (1f), a belt roller (18) arranged in the belt line (2) should be adjustable into position (18a).

Claims (5)

1. Process for slowing down and laying out printed sheets (1) or stacks of sheets with a rotating cylinder (4) which has devices (5) for guiding the leading ends of the sheets and by means of which the sheets are laid onto a laying out device (6) by being rotated in the running direction, with the trailing sheet end overtaking the leading sheet end, and to which the sheets are conveyed via a transport device (2), characterised in that the transport device (2) guides the sheets only up to the cylinder, in that the sheets are gripped by the devices (5) constructed as grippers, in that when the sheet is partly guided round, the trailing sheet end is guided on curved deflection plates (3b, 3c), the sheet being curved by its kinetic energy, and in that the sheet is released by the grippers of the continuously rotating cylinder after subsequent rotation.
2. Process acording to claim 1, characterised in that on release of the sheet (1 i) by the gripper (5i) it is aligned at stationary stop tongues (20) and in that the sheets (1 i) are laid in overlapping manner on the laying out belt (6).
3. Process according to one of the preceding claims, characterised in that the sheet (1f) is gripped by the sheet gripper (5f) when the front area of the sheet comes to lie below the sheet feed plane.
4. Device for carrying out the process according to one or more of the preceding claims, characterised in that a circulating transport device (6) is arranged downstream of the gripper cylinder (4), the transport direction of this device being opposite to that of the gripper cylinder (4).
5. Device according to claim 4, characterised in that the grippers (5a to 5e) of the gripper cylinder (4) form deflection elements in the open state, by means of which each on-coming sheet (1a to 1e) can be brought with its front area below the sheet run-in plane.
EP86114637A 1985-12-20 1986-10-22 Method and device for slowing down and spreading sheets or parcels of sheets printed in a printing machine Expired EP0225994B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3545271 1985-12-20
DE19853545271 DE3545271A1 (en) 1985-12-20 1985-12-20 METHOD AND DEVICE FOR BRAKING AND LAYING OUT OF SHEETS OR SHEET PACKS PRINTED IN A PRINTING MACHINE

Publications (2)

Publication Number Publication Date
EP0225994A1 EP0225994A1 (en) 1987-06-24
EP0225994B1 true EP0225994B1 (en) 1989-01-11

Family

ID=6289061

Family Applications (1)

Application Number Title Priority Date Filing Date
EP86114637A Expired EP0225994B1 (en) 1985-12-20 1986-10-22 Method and device for slowing down and spreading sheets or parcels of sheets printed in a printing machine

Country Status (4)

Country Link
US (1) US4736941A (en)
EP (1) EP0225994B1 (en)
JP (1) JPS62180861A (en)
DE (2) DE3545271A1 (en)

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DE3844899C2 (en) * 1988-04-16 1997-07-17 Bielomatik Leuze & Co Stacking machine for paper, etc. sheets
US5145167A (en) * 1990-08-17 1992-09-08 Xerox Corporation Disk stacker including trail edge transport belt for stacking short and long sheets
US5447303A (en) * 1994-06-20 1995-09-05 Xerox Corporation Sheet inverter apparatus
JP4027424B2 (en) * 1996-05-29 2007-12-26 ハイデルベルガー ドルツクマシーネン アクチエンゲゼルシヤフト Sheet transport mechanism for rotary printing presses.
US6116593A (en) * 1996-11-18 2000-09-12 Heidelberg Harris, Inc. Method and apparatus for non-contact deceleration of flat products
EP0867394B1 (en) * 1997-03-24 2002-10-30 Konica Corporation Sheet reversing apparatus
US6131904A (en) * 1998-09-01 2000-10-17 Goss Graphic Systems, Inc. Stripping mechanism for a delivery fly assembly
DE50101385D1 (en) * 2000-10-02 2004-03-04 Ferag Ag Method and device for forming a double scale formation from printed products
DE102006005156A1 (en) * 2006-01-14 2007-07-19 Kolbus Gmbh & Co. Kg Device for depositing individually sequentially fed printed products in a scaled superimposed formation
JP5456283B2 (en) * 2007-08-31 2014-03-26 株式会社小森コーポレーション Sheet-fed printing machine
JP2009073667A (en) * 2007-08-31 2009-04-09 Komori Corp Overlaying device
EP4219365A1 (en) * 2022-02-01 2023-08-02 Canon Production Printing Holding B.V. Sheet stacker for thin or weak print media

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Also Published As

Publication number Publication date
DE3661721D1 (en) 1989-02-16
EP0225994A1 (en) 1987-06-24
US4736941A (en) 1988-04-12
DE3545271A1 (en) 1987-07-02
JPS62180861A (en) 1987-08-08

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