EP1148008B1 - Gripper shaft for clamping printed products - Google Patents

Gripper shaft for clamping printed products Download PDF

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Publication number
EP1148008B1
EP1148008B1 EP00810350A EP00810350A EP1148008B1 EP 1148008 B1 EP1148008 B1 EP 1148008B1 EP 00810350 A EP00810350 A EP 00810350A EP 00810350 A EP00810350 A EP 00810350A EP 1148008 B1 EP1148008 B1 EP 1148008B1
Authority
EP
European Patent Office
Prior art keywords
gripper
shaft
drum
grippers
shaft body
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
EP00810350A
Other languages
German (de)
French (fr)
Other versions
EP1148008A1 (en
Inventor
Günther Silberbauer
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.)
Grapha Holding AG
Original Assignee
Grapha Holding 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 Grapha Holding AG filed Critical Grapha Holding AG
Priority to DE50003100T priority Critical patent/DE50003100D1/en
Priority to EP00810350A priority patent/EP1148008B1/en
Priority to JP2001119946A priority patent/JP4926333B2/en
Priority to US09/838,559 priority patent/US6547240B2/en
Publication of EP1148008A1 publication Critical patent/EP1148008A1/en
Application granted granted Critical
Publication of EP1148008B1 publication Critical patent/EP1148008B1/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
    • B65H5/08—Feeding articles separated from piles; Feeding articles to machines by grippers, e.g. suction grippers
    • B65H5/12—Revolving grippers, e.g. mounted on arms, frames or cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2402/00—Constructional details of the handling apparatus
    • B65H2402/50—Machine elements
    • B65H2402/54—Springs, e.g. helical or leaf springs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/50—Driving mechanisms
    • B65H2403/51—Cam mechanisms
    • B65H2403/512—Cam mechanisms involving radial plate cam
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/10—Ensuring correct operation
    • B65H2601/12—Compensating; Taking-up
    • B65H2601/122—Play

Definitions

  • the invention relates to a gripper drum of an investor a gripper shaft according to the preamble of claim 1.
  • Gripper shafts are used especially for pulling sheets or inserts off a stack from a feeder and deliver to an opening device.
  • An investor with two such gripper shafts is, for example, from CH 652 103 A5 and US 4,241,907 A.
  • the gripper shaft is rotated about its longitudinal axis.
  • Grippers arranged on the gripper shaft grip such a rotary movement each have an arc on the underside of the stack and press it against a support of the gripper drum.
  • To turn the gripper shaft is, for example Drive with a spur gear and a closed one Curve provided.
  • the gripper shaft is accelerated with each closing process and through the play on the control curve and the gearing changed the direction of the spur gear. After this The turning point would like to continue rotating the shaft and that The game is moved to the opposite outside of the curve. Now hit the grippers on the support of the gripper drum on, the wave springs back within the game.
  • the grippers in particular remove thin printed sheets released briefly and can no longer be grasped properly become. As a result of this brief release, there is the risk of printing sheets being pulled off at an angle. moreover can cause printed sheets to slip off the grippers Processing interruption.
  • the known gripper shaft prone to failure and as a result Disruptions can significantly decrease the net performance.
  • the invention has for its object in a gripper drum of the type mentioned at the beginning the drive play between the control track and the grippers repealed.
  • This task is in a gripper drum according to claim 1 solved.
  • the game is at the toothing and the closed curve by means of the compensation spring canceled.
  • a closing movement a Counter torque of 6 Nm, for example.
  • This will a jumping of the gripper is avoided and it can be a gentle one Guaranteed closing movement for gripping the printed products become.
  • the printed sheets can thus be securely held in position on the Peeled from the bottom of a stack.
  • This also applies to a stack with a very high stack pressure, in which one a correspondingly high gripper force is required.
  • the safe one Gripping process enables a higher net performance and accordingly less interference.
  • the compensation spring with each closing movement by one Swing lever is tensioned, which is rotatably connected to the shaft body the gripper shaft is connected.
  • the compensation spring is preferably with the gripper shaft and the shaft of the gripper drum connected. When the gripper shaft is turned, the compensation spring automatically tensioned. The tension is easier Way by changing the position of the pivot lever adjustable on the gripper shaft.
  • Figures 1 and 2 show a gripper drum 1, which in one otherwise not shown investors is arranged and around a Shaft 7 is driven.
  • the gripper drum 1 is with flange stops 8, of which only one is shown here a machine frame not shown here.
  • On the Several gripper disks 22 to 24 are arranged on shaft 7 which at a distance from the shaft 7 has a rotatable gripper shaft 2 is stored.
  • the gripper shaft 2 has a shaft body 26 on which several grippers 3 are rotatably attached. In Figures 1 and 2 only two of these grippers 3 are shown here.
  • the Drive is designed so that the shaft body 26 with the Grippers 3 with each revolution of the gripper drum 1 Closing movement and an opening movement.
  • the grippers 3 in the rest position and in the figure 2 shown in the working position.
  • the movement takes place by a rotary movement of the shaft body 26 about its longitudinal axis.
  • the shaft body 26 in on known tensioned by means of a torsion spring, the is connected to the shaft body 26.
  • Torsion springs known.
  • a compensation spring 9 arranged, which has two spring elements 10, which are spaced parallel to each other and each on are attached at one end to an axle 19 or 30.
  • the attachment takes place with mounting plates 17, each with a screw 18 on the axis 19 and 30 are clamped.
  • the axis 19 is rotatable in a bearing 20 of a holding plate 15 stored and this plate 15 is by means of a clamping part 16 and clamping screws 14 rotatably connected to the shaft 7.
  • the axis 30 sits in a pivot bearing 21 and this is also non-rotatably connected with two pivot levers 11, which with Clamping parts 12 and clamping screws 13 firmly with the shaft body 26 are connected.
  • the Cancellation of the game has the consequence that the gripper 3 at The closing movement does not spring back from the supports 28 and so that a gentle closing is guaranteed. Because the grabs 3 do not spring back, the sheets 29 can be held more securely become.
  • the suitable counter moment can be determined by tests become. The counter moment can be changed in a simple manner are released by the pivot lever 11 and on the shaft body 26 are rotated.
  • the spring elements 10 are spiral springs here, it is clear to the person skilled in the art that the spring elements could also be designed differently. It is essential Structure of a counter moment during a closing movement.

Description

Die Erfindung betrifft eine Greifertrommel eines Anlegers mit einer Greiferwelle nach dem Oberbegriff des Anspruchs 1. Greiferwellen dienen insbesondere dazu, bei einem Anleger Bogen oder Beilagen von einem Stapel abzuziehen und an eine Öffnungsvorrichtung abzugeben. Ein Anleger mit zwei solchen Greiferwellen ist beispielsweise aus der CH 652 103 A5 und der US 4 241 907 A bekannt. Um die Bogen zu fassen, wird die Greiferwelle um ihre Längsachse gedreht. An der Greiferwelle angeordnete Greifer erfassen bei einer solchen Drehbewegung jeweils einen Bogen an der Stapelunterseite und pressen diesen gegen eine Auflage der Greifertrommel. Zum Drehen der Greiferwelle ist beispielsweise ein Antrieb mit einem Stirnradgetriebe und einer geschlossenen Kurve vorgesehen.The invention relates to a gripper drum of an investor a gripper shaft according to the preamble of claim 1. Gripper shafts are used especially for pulling sheets or inserts off a stack from a feeder and deliver to an opening device. An investor with two such gripper shafts is, for example, from CH 652 103 A5 and US 4,241,907 A. To the To grasp the bow, the gripper shaft is rotated about its longitudinal axis. Grippers arranged on the gripper shaft grip such a rotary movement each have an arc on the underside of the stack and press it against a support of the gripper drum. To turn the gripper shaft is, for example Drive with a spur gear and a closed one Curve provided.

Bei jedem Schliessvorgang wird die Greiferwelle beschleunigt und durch das Spiel an der Steuerkurve sowie der Verzahnung des Stirnradgetriebes in ihrer Richtung geändert. Nach dem Wendepunkt möchte die Welle jeweils weiter drehen und das Spiel wird auf die gegenüberliegende Kurvenaussenseite verlegt. Schlagen nun die Greifer auf die Auflage der Greifertrommel auf, so federt die Welle innerhalb des Spiels zurück. Vor allem dünne Druckbogen werden dadurch von den Greifern kurzzeitig losgelassen und können nicht mehr richtig nachgegriffen werden. Als Folge dieses kurzzeitigen Loslassens besteht die Gefahr, dass Druckbogen schräg abgezogen werden. Zudem können Druckbogen von den Greifern abrutschen und verursachen Verarbeitungsunterbruch. Vor allem bei hohen Leistungen ist die bekannte Greiferwelle störanfällig und als Folge solcher Störungen kann die Nettoleistung wesentlich abnehmen.The gripper shaft is accelerated with each closing process and through the play on the control curve and the gearing changed the direction of the spur gear. After this The turning point would like to continue rotating the shaft and that The game is moved to the opposite outside of the curve. Now hit the grippers on the support of the gripper drum on, the wave springs back within the game. The grippers in particular remove thin printed sheets released briefly and can no longer be grasped properly become. As a result of this brief release, there is the risk of printing sheets being pulled off at an angle. moreover can cause printed sheets to slip off the grippers Processing interruption. Especially with high performance is the known gripper shaft prone to failure and as a result Disruptions can significantly decrease the net performance.

Bei einer Rotationsdruckmaschine nach der US 3 960 079, sind zur Zuführung der einzelnen Bogen zwei getrennte Greifervorrichtungen vorgesehen,von denen die in Zuführrichtung erste Greifervorrichtung aus einem reversierenden Förderer die Bogen mittels Greiferhebeln in einer Uebernahmeposition hält, in der sie von einer umlaufenden Greifertrommel jeweils übernommen und an ein Druckwerk weitertransportiert werden. Zur Aufhebung des Spiels in der Antriebsübertragung zwischen einer Steuerbahn und den Greiferhebeln wird eine Steuerrolle eines durch die Steuerbahn betätigten Hebels mittels Federdruck an die Steuerbahn gepresst.In a rotary printing machine according to US 3 960 079, are two separate gripper devices for feeding the individual sheets provided, of which the first in the feed direction Gripper device from a reversing conveyor the sheets by means of gripper levers in a take-over position in which each taken over by a rotating gripper drum and transported to a printing unit. To repeal of the game in the drive transmission between a control path and the gripper levers becomes a control roller the control path operated lever by spring pressure to the Control track pressed.

Der Erfindung liegt die Aufgabe zugrunde, bei einer Greifertrommel der eingangs genannten Art das Antriebsspiel zwischen Steuerbahn und Greifern aufzuheben.The invention has for its object in a gripper drum of the type mentioned at the beginning the drive play between the control track and the grippers repealed.

Diese Aufgabe ist bei einer Greifertrommel gemäss Anspruch 1 gelöst. This task is in a gripper drum according to claim 1 solved.

Bei der erfindungsgemässen Greifertrommel wird das Spiel bei der Verzahnung und der geschlossenen Kurve mittels der Kompensationsfeder aufgehoben. Bei einer Schliessbewegung wird ein Gegenmoment von beispielsweise 6 Nm aufgebaut. Dadurch wird ein Springen der Greifer vermieden und es kann eine sanfte Schliessbewegung zum Fassen der Druckprodukte gewährleistet werden. Die Druckbogen können somit sicher lagestabil an der Unterseite eines Stapels abgezogen werden. Dies gilt auch bei einem Stapel mit einem sehr hohen Stapeldruck, bei dem eine entsprechend hohe Greiferkraft erforderlich ist. Der sichere Greifvorgang ermöglicht eine höhere Nettoleistung und entsprechend weniger Störungen.With the gripper drum according to the invention, the game is at the toothing and the closed curve by means of the compensation spring canceled. With a closing movement a Counter torque of 6 Nm, for example. This will a jumping of the gripper is avoided and it can be a gentle one Guaranteed closing movement for gripping the printed products become. The printed sheets can thus be securely held in position on the Peeled from the bottom of a stack. This also applies to a stack with a very high stack pressure, in which one a correspondingly high gripper force is required. The safe one Gripping process enables a higher net performance and accordingly less interference.

Eine besonders einfache konstruktive Ausführung ergibt sich dann, wenn gemäss einer Weiterbildung der Erfindung die Kompensationsfeder bei jeder Schliessbewegung durch einen Schwenkhebel gespannt wird, der drehfest mit dem Wellenkörper der Greiferwelle verbunden ist. Die Kompensationsfeder ist vorzugsweise mit der Greiferwelle und der Welle der Greifertrommel verbunden. Beim Drehen der Greiferwelle wird die Kompensationsfeder selbstätig gespannt. Die Spannung ist in einfacher Weise durch eine Veränderung der Position des Schwenkhebels auf der Greiferwelle einstellbar.A particularly simple structural design results when, according to a development of the invention, the compensation spring with each closing movement by one Swing lever is tensioned, which is rotatably connected to the shaft body the gripper shaft is connected. The compensation spring is preferably with the gripper shaft and the shaft of the gripper drum connected. When the gripper shaft is turned, the compensation spring automatically tensioned. The tension is easier Way by changing the position of the pivot lever adjustable on the gripper shaft.

Weitere vorteilhafte Merkmale ergeben sich aus den abhängigen Patentansprüchen der nachfolgenden Beschreibung sowie der Zeichnung. Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand der Zeichnung näher erläutert. Es zeigen:

Fig. 1
eine Teilansicht einer erfindungsgemässen Greifertrommel mit einer Greiferwelle, wobei die Greiferwelle in der Ruhestellung ist,
Fig. 2
eine Greifertrommel gemäss Figur 1, wobei die Greiferwelle jedoch in der Arbeitsstellung ist,
Fig. 3
eine räumliche Ansicht einer Kompensationsfeder.
Further advantageous features result from the dependent patent claims of the following description and the drawing. An embodiment of the invention is explained below with reference to the drawing. Show it:
Fig. 1
2 shows a partial view of a gripper drum according to the invention with a gripper shaft, the gripper shaft being in the rest position,
Fig. 2
a gripper drum according to Figure 1, but the gripper shaft is in the working position,
Fig. 3
a spatial view of a compensation spring.

Die Figuren 1 und 2 zeigen eine Greifertrommel 1, die in einem ansonst nicht gezeigten Anleger angeordnet ist und um eine Welle 7 angetrieben ist. Die Greifertrommel 1 ist mit Flanschlagern 8, von denen hier lediglich einer gezeigt ist, an einem hier nicht gezeigten Maschinengestell gelagert. Auf der Welle 7 sind mehrere Greiferscheiben 22 bis 24 angeordnet, auf denen im Abstand zur Welle 7 eine begrenzt drehbare Greiferwelle 2 gelagert ist.Figures 1 and 2 show a gripper drum 1, which in one otherwise not shown investors is arranged and around a Shaft 7 is driven. The gripper drum 1 is with flange stops 8, of which only one is shown here a machine frame not shown here. On the Several gripper disks 22 to 24 are arranged on shaft 7 which at a distance from the shaft 7 has a rotatable gripper shaft 2 is stored.

Die Greiferwelle 2 weist einen Wellenkörper 26 auf, auf dem mehrere Greifer 3 drehfest befestigt sind. In den Figuren 1 und 2 sind hier lediglich zwei dieser Greifer 3 gezeigt. Der Antrieb ist so ausgebildet, dass der Wellenkörper 26 mit den Greifern 3 bei jeder Umdrehung der Greifertrommel 1 eine Schliessbewegung sowie eine Oeffnungsbewegung ausübt. In der Figur 1 sind die Greifer 3 in der Ruhestellung und in der Figur 2 in der Arbeitsstellung gezeigt. Bei der Schliessbewegung werden die Greifer 3 von der in Figur 1 gezeigten Stellung in die in Figur 2 gezeigte Stellung bewegt. Die Bewegung erfolgt durch eine Drehbewegung des Wellenkörpers 26 um seine Längsachse. Beim Schliessvorgang wird der Wellenkörper 26 in an sich bekannter Weise mittels einer Torsionsfeder gespannt, die mit dem Wellenkörper 26 verbunden ist. Dem Fachmann sind solche Torsionsfedern bekannt.The gripper shaft 2 has a shaft body 26 on which several grippers 3 are rotatably attached. In Figures 1 and 2 only two of these grippers 3 are shown here. The Drive is designed so that the shaft body 26 with the Grippers 3 with each revolution of the gripper drum 1 Closing movement and an opening movement. In the Figure 1 are the grippers 3 in the rest position and in the figure 2 shown in the working position. During the closing movement the grippers 3 from the position shown in FIG the position shown in Figure 2 moves. The movement takes place by a rotary movement of the shaft body 26 about its longitudinal axis. When closing, the shaft body 26 in on known tensioned by means of a torsion spring, the is connected to the shaft body 26. Those skilled in the art are such Torsion springs known.

Bei einer Schliessbewegung werden die Greifer 3 gemäss Figur 2 jeweils an Auflagen 28 angepresst, und hierbei wird ein Falz eines in Figur 2 angedeuteten Druckbogens 29 festgehalten. Ein solcher festgehaltener Druckbogen 29 kann durch die Drehbewegung der Greifertrommel 1 in Richtung des Pfeils 25 von einem hier nicht gezeigten Stapel abgezogen werden.During a closing movement, the grippers 3 according to FIG. 2 each pressed against pads 28, and this is a fold of a printed sheet 29 indicated in FIG. 2. On such fixed sheet 29 can by the rotational movement the gripper drum 1 in the direction of arrow 25 from one stack not shown here are subtracted.

Zwischen dem Wellenkörper 26 und der Welle 7 ist eine Kompensationsfeder 9 angeordnet, die zwei Federelemente 10 aufweist, die im Abstand zueinander parallel angeordnet und jeweils an einem Ende an einer Achse 19 bzw. 30 befestigt sind. Die Befestigung erfolgt mit Befestigungsplatten 17, die jeweils mit einer Schraube 18 an der Achse 19 bzw. 30 festgeklemmt sind. Die Achse 19 ist in einem Lager 20 einer Halteplatte 15 drehbar gelagert und diese Platte 15 ist mittels eines Klemmteils 16 sowie Klemmschrauben 14 drehfest mit der Welle 7 verbunden. Die Achse 30 sitzt in einem Drehlager 21 und dieses ist ebenfalls drehfest mit zwei Schwenkhebeln 11 verbunden, die mit Klemmteilen 12 und Klemmschrauben 13 fest mit dem Wellenkörper 26 verbunden sind. Diese beiden Schwenkhebel 11 sind so ausgebildet, dass die beiden Federelemente 10 bei einer Schliessbewegung des Greifers 3 gespannt werden. Diese Drehbewegung ist in Figur 1 mit dem Pfeil 31 angedeutet. Die hierbei erzeugte Spannung der beiden Federelemente 10 wirkt über die Schwenkhebel 11 als Drehmoment auf den Wellenkörper 26 und dieses Drehmoment ist ein Gegenmoment zum Drehmoment, das die Greifer 3 an die Auflagen 28 anpresst. Der Wert dieses Gegenmomentes beträgt beispielsweise 6 Nm. Das Drehmoment, welches die Greifer 3 anpresst, ist wesentlich grösser, beispielsweise grösser als 10 Nm. Durch dieses Gegenmoment wird ein Spiel im Antrieb 4 bzw. im Getriebe des Antriebes aufgehoben. Ein Spiel kann zwischen einer hier nicht gezeigten geschlossenen Antriebskurve und einer in dieser Kurve geführten Rolle bestehen. Die Aufhebung des Spiels hat zur Folge, dass die Greifer 3 bei der Schliessbewegung von den Auflagen 28 nicht zurückspringen und damit ein sanftes Schliessen gewährleistet ist. Da die Greifer 3 nicht zurückspringen, können die Bogen 29 sicherer gefasst werden. Das geeignete Gegenmoment kann durch Versuche ermittelt werden. Das Gegenmoment kann in einfacher Weise verändert werden, indem die Schwenkhebel 11 gelöst und auf dem Wellenkörper 26 verdreht werden. Die Federelemente 10 sind hier Spiralfedern, für den Fachmann ist aber klar, dass die Federelemente auch anders ausgebildet sein könnten. Wesentlich ist der Aufbau eines Gegenmomentes bei einer Schliessbewegung.Between the shaft body 26 and the shaft 7 is a compensation spring 9 arranged, which has two spring elements 10, which are spaced parallel to each other and each on are attached at one end to an axle 19 or 30. The attachment takes place with mounting plates 17, each with a screw 18 on the axis 19 and 30 are clamped. The axis 19 is rotatable in a bearing 20 of a holding plate 15 stored and this plate 15 is by means of a clamping part 16 and clamping screws 14 rotatably connected to the shaft 7. The axis 30 sits in a pivot bearing 21 and this is also non-rotatably connected with two pivot levers 11, which with Clamping parts 12 and clamping screws 13 firmly with the shaft body 26 are connected. These two pivot levers 11 are designed that the two spring elements 10 during a closing movement of the gripper 3 can be clamped. This rotary motion is indicated by the arrow 31 in FIG. The generated here Tension of the two spring elements 10 acts via the pivot lever 11 as torque on the shaft body 26 and this Torque is a counter torque to the torque that the gripper 3 pressed against the pads 28. The value of this counter moment is, for example, 6 Nm. The torque that the gripper 3 pressed, is much larger, for example larger than 10 Nm. This counter torque creates a play in the drive 4 or canceled in the gearbox of the drive. A game can between a closed drive curve, not shown here and a role in this curve. The Cancellation of the game has the consequence that the gripper 3 at The closing movement does not spring back from the supports 28 and so that a gentle closing is guaranteed. Because the grabs 3 do not spring back, the sheets 29 can be held more securely become. The suitable counter moment can be determined by tests become. The counter moment can be changed in a simple manner are released by the pivot lever 11 and on the shaft body 26 are rotated. The spring elements 10 are spiral springs here, it is clear to the person skilled in the art that the spring elements could also be designed differently. It is essential Structure of a counter moment during a closing movement.

Da die Kompensationsfeder 9 aus vergleichsweise einfachen und kostengünstigen Einzelteilen herstellbar ist, ist der zusätzliche Aufwand vergleichsweise klein und erfordert keinerlei Wartung.Since the compensation spring 9 from comparatively simple and inexpensive parts can be produced is the additional Comparatively small effort and does not require any Maintenance.

Claims (3)

  1. Gripper drum of a feeder with a gripper shaft for gripping printed products (29), whereby the gripper shaft (2) has a shaft body (26) controlled by a control path via a drive on which shaft body is arranged a plurality of grippers (3) and which is rotatable about its longitudinal axis for gripping the printed products (29), characterised in that, for removing the drive play between the control path and the grippers (3), assigned to the drive is a bracing device linked to the gripper drum (1) with a compensating spring producing a counter-moment during the rotation of the shaft body (26), so that, in their working position, the grippers (3) press a printed sheet (29) against a peripheral jacket surface (28) of the gripper drum (1).
  2. Drum according to Claim 1, characterised in that the compensating spring (9) has at least one rotation lever (11) which is connected in non-slip manner with the shaft body (26) of the gripper shaft (2) and which on every closing movement tensions at least one spring element (10).
  3. Drum according to one of the claims 1 and 2, characterised in that the compensating spring (9) has helical spring elements (10) connected in operative manner at one end, respectively, to the shaft body (26) of the gripper shaft (2) and at the other end to a shaft (7) of the gripper drum (1).
EP00810350A 2000-04-20 2000-04-20 Gripper shaft for clamping printed products Expired - Lifetime EP1148008B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE50003100T DE50003100D1 (en) 2000-04-20 2000-04-20 Gripper shaft for gripping printed products
EP00810350A EP1148008B1 (en) 2000-04-20 2000-04-20 Gripper shaft for clamping printed products
JP2001119946A JP4926333B2 (en) 2000-04-20 2001-04-18 Gripper shaft for gripping printed products
US09/838,559 US6547240B2 (en) 2000-04-20 2001-04-20 Gripper drum for gripping printed products

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP00810350A EP1148008B1 (en) 2000-04-20 2000-04-20 Gripper shaft for clamping printed products

Publications (2)

Publication Number Publication Date
EP1148008A1 EP1148008A1 (en) 2001-10-24
EP1148008B1 true EP1148008B1 (en) 2003-07-30

Family

ID=8174665

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00810350A Expired - Lifetime EP1148008B1 (en) 2000-04-20 2000-04-20 Gripper shaft for clamping printed products

Country Status (4)

Country Link
US (1) US6547240B2 (en)
EP (1) EP1148008B1 (en)
JP (1) JP4926333B2 (en)
DE (1) DE50003100D1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1700803B1 (en) * 2005-03-10 2008-05-28 Müller Martini Holding AG Device for opening and depositing a folded sheet

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3806111A (en) * 1972-09-27 1974-04-23 Motter J Printing Press Co Signature inserter
IT991860B (en) * 1973-07-25 1975-08-30 Nebiolo Spa ROTARY PRINTING MACHINE FOR SINGLE SHEETS
CH617905A5 (en) * 1977-05-30 1980-06-30 Grapha Holding Ag
US4241907A (en) * 1979-04-09 1980-12-30 Mccain Manufacturing Corporation Signature machine having an adjustable timing control of the extraction means
CH652103A5 (en) * 1981-09-22 1985-10-31 Grapha Holding Ag FEEDER FOR FOLDING SHEET.
US4564186A (en) * 1984-06-04 1986-01-14 R. R. Donnelley & Sons Company Apparatus for gathering printed signatures for saddle stitching
US4681213A (en) * 1985-10-23 1987-07-21 Harris Graphics Corporation Gripper assembly
EP0990610B1 (en) * 1998-09-28 2002-12-04 Grapha-Holding Ag Device for depositing folded sheet on a conveyor

Also Published As

Publication number Publication date
JP2002029645A (en) 2002-01-29
US6547240B2 (en) 2003-04-15
JP4926333B2 (en) 2012-05-09
DE50003100D1 (en) 2003-09-04
EP1148008A1 (en) 2001-10-24
US20020060424A1 (en) 2002-05-23

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