WO2009115430A1

WO2009115430A1 - Manipulation device and delivery device for a sheet processing printing machine

Info

Publication number: WO2009115430A1
Application number: PCT/EP2009/052765
Authority: WO
Inventors: Harald Subtil
Original assignee: Manroland Ag
Priority date: 2008-03-20
Filing date: 2009-03-10
Publication date: 2009-09-24
Also published as: DE102008000792A1; DE102008000792B4

Abstract

A manipulation device (20, 20') and delivery device (1) for a sheet processing printing machine, wherein the manipulation device comprises: at least one manipulation unit (200, 200') comprising a belt or chain circulating element (202, 202'), a drive wheel (203, 203') and a return wheel (204, 204'), wherein the circulating element is configured for continuous circulation about the drive wheel and the return wheel so that the circulating element extends along a sheet transport path (BT) in the delivery device, wherein one of the drive wheel and the return wheel is disposed adjacent to a sheet off-load position (B2), wherein at least one gripper unit (210, 210') is disposed at a circulating periphery of the circulating element, said gripper unit being configured for selective horizontal grasping of a rear edge of a sheet along the sheet transport path and for the horizontal release of the sheet rear edge at a return point (u) of the circulating element corresponding to the sheet off-load position, and wherein the circulating element and the at least one gripper unit together define a width in a width direction of the manipulation device perpendicular to the sheet transport direction, said width being smaller than a sheet width extending in the width direction.

Description

Manipulation device and delivery device for a sheet-fed printing machine

The invention relates to a manipulation device for sheet manipulation in a delivery device of a sheet-processing printing machine and a delivery device for sheet delivery in a sheet-processing printing machine, in particular a sheet-fed rotary printing machine.

Sheet-fed printing machines usually have a jig, printing units and a delivery device in which the printed sheets are deposited by means of a transport system on a delivery pile. The transport system picks up the printed sheets from a transfer drum downstream of the printing units and transports them to the delivery stack.

A known transport system are rotating gripper carriages or gripper bars, which are arranged transversely to the sheet running direction and which are fastened to two laterally synchronously rotating, coupled with the machine drive chains, so that the sheets held at its leading edge along a sheet transport path to the delivery stack can be guided out ,

To deposit the sheets on the delivery pile, they must be braked almost to a standstill. This can be done for example by braking the gripper bridges and / or by touch-based sheet brakes, as described for example in EP 1 882 662 A2 and DE 10 2004 031 752 B4.

However, such touch-based sheet brakes are disadvantageous in that they usually need pressure-free zones in the subject, in which the Contact between the sheet brake and the bow is realized. This can be realized relatively easily in Perfecting operation, since the sheets are printed only on one side. In perfecting mode, however, this can be problematic because here the sheets are printed on both sides. However, in perfecting mode, in addition to a gripper edge on the sheet leading edge, there is also a gripper edge at the trailing edge of the sheet due to the printing process. This rear gripper edge can therefore be used for holding or braking the bow.

In this context, from DE 42 18 421 A1, a sheet guide in the boom of a sheet-fed press is known in which arranged on endless rotating chains of a first gripper system gripper bars, the sheet leading edge and arranged on endless circulating chains of a second gripper system gripper bars detect the sheet trailing edge. The two gripper systems are arranged on a boom to each other phase-adjustable, wherein the gripper bars attached to them can hold printed sheets on their horizontal transport over the length of the boom at the front edge and at the trailing edge. By in the area of the deflection of the gripper system for the sheet trailing edge reducing horizontal movement component, the held sheets can be safely decelerated before filing on a delivery pile.

Furthermore, from DE 627 851 C1 a delivery device for sheet-fed printing machines is known in which the sheet is detected before depositing on the stack except at its leading edge on its trailing edge of Nachgreifern moving in the same direction as the front gripper and its speed after the release of the bow by the front gripper delay. The Nachgreifer are guided on an endless chain such that they detect the arc after overflow of the stack further away from the sprocket and inevitably lead to their final position on the stack during their run on the stack initially lying on the stack whereby they delay the speed of the sheet to zero horizontal speed.

Another sheet-fed sheet delivery apparatus, in which the sheets are also gripped at their trailing edge, is described in US 3,841,625 A1.

However, all these known Auslegevorrichtungen are disadvantageous to the effect that circulate in them by the gripper bars relatively large masses. Further, the gripper bars must be designed so that they cover the maximum sheet width, whereby additional masses must be moved and build the Auslegevorrichtungen relatively large. In addition, these known Auslegevorrichtungen, as they attack for braking the sheet either touch-based on the sheet surface or on the sheet trailing edge, not flexible switch from Schöndruck operation on perfecting operation and vice versa.

The invention has for its object to provide a manipulation device for sheet manipulation in the boom of a sheet-processing printing machine, in particular a sheet-fed rotary printing machine, wherein the manipulation device is flexible with low weight and small size flexible for manipulating different sheet widths customizable. The invention is further based on the object, a equipped with such a manipulation device delivery device for sheet delivery in a sheet-processing printing machine, in particular a sheet-fed rotary printing machine to provide, the delivery device is flexibly switchable from Perfecting operation on beautiful and perfecting operation and vice versa ,

The above objects are achieved with a manipulation device according to claim 1 and a delivery device according to claim 10, respectively. Further developments of the invention are defined in the dependent claims. According to a first aspect of the invention, a manipulation device for sheet manipulation in the delivery of a sheet-processing printing machine, comprising: at least one manipulation unit with a belt-shaped or chain-like circulation element, a drive wheel and a deflection wheel, wherein the circulation element is configured for endless circulation around the drive wheel and the deflection wheel, such that the circulation element extends along a sheet transport path in the delivery arm, wherein one of the drive wheel and the deflection wheel is disposed adjacent to a sheet storage position, wherein at least one gripper unit arranged for selectively horizontally gripping a sheet trailing edge is arranged on a peripheral circumference of the circulation element the sheet transport path and for horizontally releasing the sheet trailing edge at a corresponding to the sheet storage position deflection of the circulating element, and wherein the circulating element and the at least one gripper unit in a Width direction of the manipulation device across the sheet transport path together define a width that is smaller than a width extending in the width direction sheet width.

Characterized in that the circulating element and the at least one gripper unit in the width direction of the manipulation device define transversely to the sheet transport path together a width which is smaller than the width extending in the width direction sheet width, the manipulation device is relatively narrow and has a relatively low mass. According to embodiments of the invention, the width defined by the circulating element and the gripper unit may be less than half, less than one third or less than one quarter of the sheet width.

Of course, according to embodiments of the invention and, for example, depending on the sheet width, it is also possible to make the width defined jointly by the circulating element and the gripper unit of the manipulation unit even smaller, eg smaller than one fifth or smaller than one sixth of the sheet width. According to the invention is especially important that the gripper unit no Covered substantially part of the width of a sheet and is not stored bridge-like between two chains or belts.

According to further embodiments of the invention, the circulating element may for example be formed as a single narrow closed toothed belt or as a single narrow closed roller chain, wherein the gripper unit is attached to the peripheral periphery of the toothed belt or the roller chain. In other words, the gripper unit is mounted on a narrow single belt or a narrow single chain. Thus, the total width of the manipulation unit is determined by the width of the gripper unit.

Due to the relatively narrow design of the manipulation unit, it can be arranged in the width direction in accordance with the respectively to be handled sheet width, whereby a high flexibility is achieved.

In addition, when used as a circulating element, e.g. a timing belt is provided to operate extremely quiet, which brings additional operational benefits.

Furthermore, the manipulation device according to the invention can be used as desired as a transport system and / or as a braking system or completely deactivated, for example, when working in straight printing mode and a rear gripper edge is not available to the sheet. The respective mode of operation of the manipulation device also depends, in particular, on the point at which on the sheet transport path the gripper unit detects the sheet trailing edge.

The manipulation device according to the invention preferably cooperates with a conventional transport system based on gripper bridges or gripper carriages and conveyor chains, which grips the sheets to be laid out at their respective sheet leading edge and transports them to the delivery stack. Such conventional transport systems are described for example in DE 10 2004 031 752 B4 and DE 42 18 421 A1. The manipulation device according to the invention is preferably arranged in the manner described in DE 42 18 421 A1 in Fig.1 below the usual transport system. That is, an upper run of the circulating element of the manipulation device according to the invention is applied to the transport path of the sheet from below. The drive for the drive wheel of the manipulation unit according to the invention can be tapped for example by the drive of the chains of the usual transport system, so that the drive of the circulating element is analogous to the speed of the printing press or the usual transport system.

In the case where the gripper unit of the manipulating device according to the invention grips the sheet trailing edge at the sheet receiving position directly after the printing units, additional sheet guiding means such as e.g. blown air sheet guiding devices, omitted.

In addition, the manipulation device according to the invention can be used in an advantageous manner as a sheet brake for braking the sheet before depositing on the delivery pile. For this purpose, the gripper unit of the manipulation device, the sheet trailing edge free exactly when the sheet to be deposited with already released sheet leading edge directly above the delivery stack and the gripper unit is at the corresponding to the sheet storage position deflection of the circulating element, where the horizontal velocity component of the gripper unit and thus the arc held by this is zero.

The gripper unit is designed so that the gripper of the gripper unit at least as long as he holds the respective sheet always remains in a horizontal orientation, so that the sheet is not kinked at its sheet trailing edge and guided correctly on the transport path. If the manipulation device according to the invention is intended to be used essentially as a brake system or sheet brake, it is possible, for example, to grasp the respective sheets only shortly before reaching the sheet storage position at their respective sheet trailing edge. In this case, additional sheet guide elements are preferably provided for guiding the sheets on the part in front of their transport path.

In this case, for example, a respective sheet is removed with the usual gripper bridges based transport system from the last printing unit / coating unit in the known manner at its sheet leading edge and transported along the sheet transport path in the direction of delivery stack. The respective sheet is guided without contact over the sheet transport path or the sheet web (blowing or suction). On a last stretch before the stack trailing edge of the sheet trailing edge is detected and held by the rotating gripper unit of the manipulation device according to the invention. The bow is now held at both its front and rear edges. Shortly before / at the latest when the sheet trailing edge gripper unit enters its front turn radius (i.e., the turning radius adjacent the delivery stack), the sheet leading edge gripper system releases the sheet at the sheet leading edge. The bow is at its bow trailing edge in

The gripper of the gripper unit according to the invention remains in the respective 90-degree segment in the horizontal position.When the sheet is released, the gripper of the gripper unit, for example, in a If the gripper unit is guided on two offset parallel trajectories, its gripper does not have to make any pivoting movement and the working cycle is completed.

If the manipulation device according to the invention is not required because, for example, no rear gripper edge is available on the sheet, then the manipulation device can be deactivated and a conventional touch-based sheet braking device acting on pressure-free zones, such as For example, it is described in EP 1 882 662 A2 or DE 10 2004 031 752 B4, used to decelerate the sheets on the delivery stack.

Thus, the manipulation device according to the invention is flexibly switchable from Perfecting mode to perfecting and vice versa operation and vice versa.

According to an embodiment of the invention, the other of the drive wheel and the idler wheel is disposed adjacent to the sheet receiving position on the printing machine, the at least one gripper unit being arranged to grab a sheet trailing edge at the sheet receiving position with arc length control.

That is, according to this embodiment of the invention, the manipulation device can be used both for sheet transport over the entire sheet transport path and as a sheet brake. In order to adapt the manipulation device to different format lengths or arc lengths, the gripper insertion point can be changed depending on the length of the sheet.

According to an embodiment of the invention, the other one of the drive wheel and the idler wheel is disposed in an intermediate portion between a sheet receiving position on the printing press and the sheet depositing position, the at least one gripper unit being arranged to grasp a sheet trailing edge arc-controlled between the sheet receiving position and the sheet depositing position.

That is, according to this embodiment of the invention, the manipulation device is preferably used as a selectively activatable and deactivatable sheet brake. In order to adapt the manipulation device to different format lengths or arc lengths, the gripper insertion point can be changed depending on the length of the sheet. According to one embodiment of the invention, the drive wheel and the deflection wheel of the manipulation unit are adjustably arranged in the width direction, whereby a position of the circulation element in the width direction is adjustable.

That is, the entire manipulation unit can be positioned by motor or manually in the width direction, depending on the sheet width or the desired gripping position on the sheet trailing edge. Of course, it is also possible in this case to move the manipulation unit completely outward to the lateral edge of the sheet width, so that the manipulation unit is (almost) completely displaced out of the sheet transport path when it is not needed, for example.

According to one embodiment of the invention, the manipulation unit has a plurality of gripper units, which are arranged at a predetermined uniform distance from each other, one behind the other along the circumferential periphery of the circulating element of the manipulation unit.

In other words, the length of the gripper track can correspond exactly to the system length of the boom chain in the case of a gripper unit and thus to an integral multiple in the case of a plurality of gripper units arranged one behind the other. The individual gripper units are preferably mounted at a uniform distance from each other.

According to one embodiment of the invention, a plurality of identically formed manipulation units are provided, which are arranged next to one another in the width direction, so that the respective gripper units of the manipulation units are aligned in the width direction.

That is, one gripper unit of each manipulation unit is aligned in the width direction to a gripper unit of an adjacent manipulation unit, so that the two or more gripper units form a common alignment line. This allows the sheets, especially for large sheet widths, even more securely held and guided on the sheet trailing edge.

Alternatively, the respective manipulation units may have at least different widths, i. the width defined jointly by the respective circulatory element and the respective gripper unit of a manipulation unit can be less than half, less than one third or less than one quarter of the sheet width.

Of course, according to embodiments of the invention and e.g. Depending on the sheet width, it is also possible to make the width defined jointly by the respective circulatory element and the respective gripper unit of a manipulation unit even smaller, e.g. less than a fifth or less than a sixth of the sheet width. According to the invention, it is especially important that the gripper units do not cover a substantial part of the width of a sheet and are not supported like a bridge between two chains or belts.

Between the manipulation units in each case a predetermined distance is present which reaches its minimum between the respective aligned gripper units. Thus, taking into account the minimum distance between the manipulation units or the gripper units sheet guiding elements (blowing or suction etc.) can be arranged.

To be able to capture the sheets securely at their respective sheet trailing edge, for example, the following configurations are possible alternatively or in combination:

The timing of closing the juxtaposed gripper units takes place from the center of the sheet outwards with a time delay. This can be realized for example by different geometries of the rapier tracks. The sheet trailing edge can be pressed with a pressure roller on a widened gripper pad left and right of the open gripper of the respective gripper unit. The sheet trailing edge can be sucked. • Blowing air can be applied to the sheet trailing edge and thus pressed onto the gripper pad.

The drive wheels and the deflection wheels of the respective manipulation units are preferably arranged on a common drive shaft or axle, so that all drive wheels can be driven synchronously. According to one embodiment of the invention, each drive wheel can be coupled via a separately switchable coupling with the common drive shaft, so that the manipulation units can be switched on separately and switched off separately.

According to one embodiment of the invention, the manipulation units are separately adjustable in the width direction.

With this embodiment of the invention, the manipulation units can be positioned separately by motor or manually in the width direction, depending on the sheet width or on the desired gripping position on the sheet trailing edge. Of course, it is also possible in this case to move some or all manipulation units completely outwards to the lateral edge of the sheet width, so that these manipulation units are (almost) completely displaced out of the sheet transport path when they are not needed, for example.

According to an embodiment of the invention, a disk drum is rotatably disposed at the position provided for gripping a sheet trailing edge, the disk drum having a rotationally extending axis of rotation and a plurality of circular disks spaced therefrom in the width direction, by means of which a sheet passed therealong can be supported in one plane. That is, according to one embodiment, the manipulation device according to the invention can be introduced with its upstream end to an intermediate disc drum. There, the printed sheets can then be picked up directly on their respective sheet trailing edge, since the disk drum, the sheet trailing edge are supported in a traversed by the gripper units according to the invention plane. As a result, it is possible, for example, to dispense with additional sheet guiding elements in perfecting mode.

According to one embodiment of the invention, each manipulation unit is arranged at a respective distance between two adjacent disks of the disk drum.

In other words, the gripper units move in this case

Bow transport direction seen in the respective distances between the discs of the disc drum.

In summary, according to an exemplary embodiment of the invention, an endlessly circulating form-locking transport means or

Circulating element (toothed belt, roller chain or the like) may be provided which carries at least one gripper unit. The length of the hook path corresponds to the system length of the boom chain in a gripper unit. In the case of several gripper units arranged one behind the other, that is a whole multiple. The individual grippers are mounted in accordance with the same distance. The transport may be located on a base body which is provided with a drive wheel and at least one guide wheel. The drive is done at machine speed, it can e.g. be tapped from the system chain of the usual transport system. The gripper insert point can be set to the format length. On the main body are guides and

Controls (eg curves) attached to the gripper unit or integrated into the base body. As already mentioned, between the gripper units sheet guiding elements (blowing or suction web, etc.) may be arranged, which would be useful, for example, in an embodiment without disk drum.

For e.g. Perfecting operation can be arranged between the gripper units (towards the rear edge of the stack) suction wheels for braking the sheet (also in combination with, for example, a blowing or suction).

As a further option, a segmented sheet brake may be provided between the gripper units additionally or alternatively.

According to a second aspect of the invention, a delivery device for sheet delivery in a sheet-processing printing machine has an endless circulation gripper system (as described, for example, in DE 10 2004 031 752 B4 and DE 42 18 421 A1), which is adapted to grasp sheets to be laid out at a sheet receiving position its sheet leading edge, for transporting the sheets along a sheet transport path in the boom and for releasing the sheet leading edge at a sheet storage position in the boom, a touch-based sheet braking device (as described for example in EP 1 882 662 A2 and DE 10 2004 031 752 B4) arranged adjacent to the sheet storage position and which can be brought into contact with pressure-free zones on the pressure surfaces of the sheet for braking abzulegenden sheet, and a manipulation device according to one of the embodiments described above, wherein the sheet brake device and the manipulation device each separately activatable and can be deactivated.

According to the invention, a display device is thus created, which has advantages in terms of low weight, small size and flexible adaptability to different sheet widths and also flexible from straight printing operation on perfecting operation and vice versa is switchable. Furthermore, since, for example, a toothed belt can be provided as a circulation element, the delivery device can be operated with particularly low noise.

The invention will now be described by way of embodiments with reference to the accompanying drawings.

Figure 1 shows according to a first embodiment of the invention, a schematic sectional side view of a sheet-fed rotary printing press in the range of their printing unit output and the sheet delivery.

Figure 2 shows a schematic sectional side view of a

Manipulation device according to the first embodiment of the invention.

FIG. 3 shows a schematic lateral sectional view of a second embodiment of the invention

Sheet-fed rotary printing press in the area of its printing unit output and its sheet delivery. Figure 4 shows a schematic side sectional view of a

Manipulation device according to the second embodiment of the invention.

Now, with reference to Figs. 1 and 2, a first embodiment of the invention will be described.

FIG. 1 shows the output-side part of printing units DW

Sheet-fed rotary printing press (not referred to and referred to below as printing machine) and a delivery device 1 for the display of printed in the printing machine sheet B (see Figure 2) on a delivery stack AS (see also Fig.2).

The delivery device 1 shown schematically in FIG. 1 comprises an endless circulation gripper system 10 (illustrated only schematically by an arrow), which is adapted for gripping sheet B to be laid out at its sheet leading edge, for transporting sheet B along a sheet transport path BT in the delivery device 1 and for releasing the sheet leading edge at a sheet storage position B2 in the delivery device 1, a touch-based sheet brake device (not shown) ), which is disposed adjacent to the sheet storage position B2 and which is for braking to be deposited sheet B in touching contact with pressure-free zones on the pressure surfaces of the sheet B can be brought, and a manipulation device 20 according to the first embodiment of the invention.

The endless circulation gripper system 10 is set up in such a way that the printed sheets B can be picked up by a transfer drum T downstream of the printing units DW at its sheet leading edge and transported to the delivery stack AS and deposited there.

The endless circulation gripper system 10 is formed in a conventional manner and has circumferential gripper carriage or gripper bars (not shown), which are arranged transversely to the sheet running direction (see Figure 2) and which on two laterally synchronously rotating with each other coupled to the printing press drive chains ( not shown) are attached, so that the sheet B held at its sheet leading edge along the sheet transport path BT to the delivery stack AS can be performed out. Such an endless circulation gripper system 10 is described, for example, in DE 10 2004 031 752 B4 or in DE 42 18 421 A1.

The arranged adjacent to the sheet storage position B2 sheet brake device is also formed in a conventional manner and used according to the first embodiment of the invention in Perfecting operation of the printing press for horizontal braking of the sheet B shortly before placing it on the delivery stack AS. Such with pressure-free zones on the pressure surfaces of Sheet B which can be brought into contact with the sheet brake device is described, for example, in EP 1 882 662 A2 or DE 10 2004 031 752 B4.

The manipulation device 20 is used according to the first embodiment of the invention in the perfecting operation of the printing machine for horizontal braking of the sheet B just before placing it on the delivery stack AS.

According to the invention, the sheet brake device and the manipulation device 20 can each be activated and deactivated separately, so that the delivery device 1 can be flexibly switched from perfecting operation to perfecting operation and vice versa, depending on the type of production carried out.

The manipulation device 20 according to the first embodiment of the invention has a manipulation unit 200 with a base body 201, designed as a closed toothed belt 202 circulating element, and a drive wheel 203 and a guide wheel 204 which are rotatably mounted on the main body 201.

The toothed belt 202 is mounted for endless circulation on the drive wheel 203 and the deflection wheel 204, so that the toothed belt 202 extends along the sheet transport path BT in the delivery device 1. The drive for the drive wheel 203 via a drive shaft 220 analogous to the speed of the printing press and is tapped according to this embodiment via a selectively activatable and deactivatable coupling of a drive for the chains of the endless circulation gripper system 10.

The drive wheel 203 is rotatably mounted on the drive shaft 220 via a selectively activatable and deactivatable clutch (not shown). The deflection wheel 204 is freely rotatably mounted on an axis 230. The driving wheel 203 is disposed adjacent to the sheet storing position B2, and the turning wheel 204 is disposed in an intermediate portion between the sheet receiving position B1 and the sheet storing position B2.

On a circumferential circumference of the toothed belt 202, a plurality of gripper units 210 are arranged at a predetermined uniform distance from each other, one behind the other.

The gripper units 210 each have a gripper 211 which is adapted for selective horizontal gripping of a sheet trailing edge in the region of an upper run 202a of the toothed belt 202 and for releasing the sheet trailing edge horizontally at a deflection point U of the toothed belt 202 on the drive wheel 203 corresponding to the sheet depositing position B2 ,

The gripper units 210 furthermore each have an upper guide 212, a lower guide 213 and a lever 214 connecting the two guides 212, 213. The upper guide 212 is movably mounted in an upper gripper track 240 and the lower guide 213 is movably mounted in a lower gripper track 250 running parallel to the upper gripper track 240. The two gripper tracks 240, 250 are formed in the main body 201.

The double bearing of the respective gripper units 210 and the interposed lever 214 ensures that the gripper 21 1 of each gripper unit 210 remains at each position on its circulation around the drive wheel 203 and the guide wheel 204 in a horizontal orientation.

The manipulation unit 200 further has control elements in the form of curve elements 260, which are arranged in the region of the drive wheel 203 for defined opening of the respective grippers 21 1 of the gripper units 210 at the deflection point U. The gripper units 210 are further coupled to a control device, not shown, which is so programmable or configurable by software and / or hardware that the closing of the gripper 21 1 for gripping the respective sheet trailing edges depending on the respectively processed in the printing machine format length or Bow length can be controlled or changed.

The timing belt 202 and the gripper units 210 define, in a widthwise direction of the manipulation device 20 across the sheet transport path BT, a width smaller than a widthwise width of the sheet

Bow B is. In other words, according to this embodiment of the invention, the toothed belt is formed as a narrow single belt with gripper units 210 mounted thereon, so that a width of the manipulation unit is determined by the gripper units 210, wherein the toothed belt 202 and the gripper units 210 together define a width that is smaller than the sheet width is. According to embodiments of the invention, the width defined by the rotating element or the toothed belt 202 and the gripper units 210 may be less than half, less than one third or less than one quarter of the sheet width.

The drive wheel 203 and the deflection wheel 204 of the manipulation unit 200 are arranged on the drive shaft 220 and on the axis 230 adjustable in the width direction, whereby a position of the manipulation unit 200 is adjustable in the width direction. According to one embodiment of this embodiment, the adjustability is realized in that the drive wheel 203 and the guide wheel 204 along a respective splines on the drive shaft 220 and the axis 230 are adjustable to predetermined setting marks and acting on the drive shaft 220 and the axis 230 clamping screws ( not shown) can be fixed in the respective position. The clutch for the drive wheel 203 is integrated into the drive wheel 203 and is moved with this. According to another embodiment, not shown in detail in the figures of this embodiment, a plurality of identically formed manipulation units 200 are provided, which are arranged next to each other in the width direction of the manipulation device 20, so that the respective gripper units 210 of the manipulation units 200 are aligned in the width direction. In this case, the manipulation units 200 are separately adjustable in the width direction.

The drive wheels 203 and the deflection wheels 204 of the respective manipulation units 200 are arranged on a common drive shaft 220 or axle 230, so that all drive wheels 203 can be driven synchronously. Each drive wheel 203 is coupled via a separately switchable coupling with the common drive shaft 220, so that the manipulation units 200 are separately actuable switchable and can be switched off.

According to another embodiment of this embodiment, not shown in detail in the figures, at the position provided for gripping a sheet trailing edge, i. e.g. in the direction of sheet travel (see Fig.2) directly in front of or behind the guide wheel 204, a disc drum arranged rotatably. The

Disc drum has an axis of rotation extending in the width direction and a plurality of circular discs spaced therefrom in the width direction, the diameter of which is in each case dimensioned such that arch B guided along it can be supported in a horizontal plane. As a result, the sheet trailing edges of the respective sheets B are in such a position that they can be gripped securely by the grippers 21 1 of the gripper units 210. To support the secure gripping of the sheet trailing edges, they can be subjected to blowing air from above shortly before and during the closing of the grippers 21 1, so that the sheet trailing edges are pressed onto a gripper support surface of the respective grippers 21 1. Each provided manipulation unit 200 may be arranged to extend in a sheet spacing direction between two adjacent disks of the disk drum as viewed in a sheet running direction.

Now, with reference to Figs. 3 and 4, a second embodiment of the invention will be described.

The second embodiment of the invention is similar to the first embodiment of the invention in all of its embodiments, except that the manipulation device 20 'according to the second embodiment has some differences in the guidance of the gripper units 210' from the manipulation device 20 according to the first embodiment. For this reason, the manipulation device 20 'will be discussed below essentially.

Elements of the manipulation device 20 'according to the second embodiment of the invention that are similar to the manipulation device 20 according to the first embodiment are designated by the same reference symbols with an added apostrophe or with exactly the same reference numerals.

The manipulation device 20 'according to the second embodiment of the invention again comprises at least one manipulation unit 200' with a base body 201 ', a circulating element formed as a closed toothed belt 202', and a drive wheel 203 'and a deflection wheel 204' which is rotatable on the base body 201 'are stored.

The toothed belt 202 'is again mounted for endless circulation on the drive wheel 203' and the deflection wheel 204 ', so that the toothed belt 202' extends along the sheet transport path BT in the delivery device 1. The drive for the drive wheel 203 'is again via a drive shaft 220' analogous to

Speed of the printing press and is over a selectively activatable and deactivatable clutch tapped from the drive for the chains of the endless circulation gripper system 10.

The drive wheel 203 'is again rotatably mounted on the drive shaft 220' via a selectively activatable and deactivatable clutch (not shown). The deflection wheel 204 'is again freely rotatably mounted on an axis 230'.

The drive wheel 203 'is again arranged adjacent to the sheet storage position B2 and the guide wheel 204' is again arranged in an intermediate section between the sheet receiving position B1 and the sheet storage position B2.

At a circumferential circumference of the toothed belt 202 'are again a plurality of gripper units 210' at a predetermined uniform distance from each other, arranged one behind the other.

The gripper units 210 'again each have a gripper 21 1', which is adapted for selective horizontal gripping a sheet trailing edge in the region of an upper run 202a 'of the belt 202' and for horizontal release of the sheet trailing edge at the corresponding to the sheet storage position B2 deflection point U of Timing belt 202 'on the drive wheel 203'.

The gripper units 210 ', in contrast to the first embodiment, in each case only a single guide 212', which is movably mounted in a gripper track 240 'formed in the base body 201'. The guide 212 'and the hook track 240' are formed or cooperate so that the grippers 21 1 'of the gripper units 210' at least from the position at which they take the sheet trailing edges of the respective sheet B, to the deflection point U out at which they release the sheet trailing edges of the respective sheets B, are kept in a constant, horizontal orientation. This will ensures that the sheet trailing edges remain correctly aligned horizontally during clamping by the gripper 21 1 'and are not kinked.

The manipulation unit 200 'again has control elements in the form of curve elements 260', which are arranged in the region of the drive wheel 203 'for defined opening of the respective grippers 21 1' of the gripper units 210 'at the deflection point U.

The gripper units 210 'are again coupled to a control device, not shown, which is so programmable or configurable by software and / or hardware that the closing of the gripper 21 1' for gripping the respective sheet trailing edges depending on the format length processed in the printing machine or arc length can be controlled or changed.

Now, the operation of the delivery device 1 equipped with the manipulation device 20 according to the first embodiment or the manipulation device 20 'according to the second embodiment will be described by way of example.

A respective sheet B is removed with the endless circulation gripper system 10 from the transfer drum T at its sheet leading edge and transported along the sheet transport path BT in the direction of delivery stack AS. The respective sheet B is guided by means of blasluft-operated sheet guiding elements (not shown) contactlessly over the sheet transport path BT. On a last stretch in front of the stack trailing edge of the sheet trailing edge is detected and held by a rotating gripper unit 210, 210 'of the manipulation device 20, 20' according to the invention. The bow B is now so held both at its front edge and at the sheet trailing edge. Shortly before / at the latest when the respective gripper unit 210, 210 'for the sheet trailing edge enters its front deflection radius (ie the deflection radius on the drive wheel 203, 203'), the respective gripper bridge for the sheet leading edge releases the sheet B at the sheet leading edge. The bow B is at its trailing edge in the Greiferschi uss in horizontal alignment on the deflection path 90 degrees and thereby slowed down to horizontal speed "ZERO" and released there .. The gripper 21 1, 21 1 'of the gripper unit 210, 210' according to the invention remains in each case in the respective 90Grad In the horizontal position, when the sheet B is released, the gripper 21 1 'of the gripper unit 210' according to the second embodiment, for example, can swing back to a home position where it will grasp the next sheet B. The gripper 211 of the gripper unit 210 According to the first embodiment, since the gripper unit 210 is guided on the two offset offset parallel gripper tracks 240 and 250, no pivoting movement is required.

Bezugszeichenhste

1 delivery device

10 endless recirculating gripper system

20, 20 'manipulation device

200, 200 'manipulation unit

201, 201 'basic body

202, 202 'circulating element or toothed belt

202a, 202a 'upper strand

203, 203 'drive wheel

204, 204 'deflecting wheel

210, 210 'gripper unit

21 1, 21 1 'gripper

212, 212 'leadership

213 leadership

214 levers

220, 220 'drive shaft

230, 230 'axis

240, 240 'Greiferbahn

250 gripper track

260, 260 'controls or curve elements

AS delivery stack

U turning point

B bow

BT Bog e n tra port s

B1 sheet recording position

B2 sheet storage position

T transfer drum

DW printing units

Claims

claims

1 . Manipulation device (20, 20 ') for sheet manipulation in a delivery device (1) of a sheet-processing printing machine, comprising: at least one manipulation unit (200, 200') with a belt-like or chain-like circulation element (202, 202 '), a drive wheel (203, 203 ') and a deflecting wheel (204, 204'), wherein the circulating element (202, 202 ') is adapted for endless circulation around the drive wheel (203, 203') and the deflecting wheel (204, 204 '), so that the circulating element ( 202, 202 ') extends along a sheet transport path (BT) in the delivery device (1), one of the drive wheel (203, 203') and the diverter wheel (204, 204 ') being adjacent to a sheet storage position (B2) at least one gripper unit (210, 210 ') is arranged on a circumferential circumference of the circulating element (202, 202'), which is arranged for selective horizontal gripping of a sheet trailing edge on the

Sheet transport path (BT) and for horizontally releasing the sheet trailing edge at a to the sheet storage position (B2) corresponding deflection point (U) of the circulating element (202, 202 '), and wherein the circulating element (202, 202') and the at least one gripper unit (210, 210 ') in a width direction of the manipulation device (20, 20') across the sheet transport path (BT) together define a width which is smaller than a widthwise extending sheet width.

The manipulation device (20, 20 ') according to claim 1, wherein the other one of the drive wheel (203, 203') and the diverter wheel (204, 204 ') is located adjacent to a sheet receiving position (B1) on the printing press, and wherein the at least one gripper unit (210, 210 ') is arranged to take a sheet trailing edge arc length controlled at the sheet receiving position (B1).

3. manipulation device (20, 20 ') according to claim 1, wherein the other of the drive wheel (203, 203') and the guide wheel (204, 204 ') in an intermediate portion between a sheet receiving position (B1) on the printing machine and the sheet storage position ( B2), and wherein the at least one gripper unit (210, 210 ') is arranged to take a sheet trailing edge arc-length-controlled between the sheet receiving position (B1) and the sheet depositing position (B2).

4. manipulation device (20, 20 ') according to one of claims 1 to 3, wherein the drive wheel (203, 203') and the deflection wheel (204, 204 ') of the

Manipulation unit 200, 200 ') are arranged adjustable in the width direction, whereby a position of the circulating element (202, 202') is adjustable in the width direction.

5. manipulation device (20, 20 ') according to any one of claims 1 to 4, wherein the manipulation unit (200, 200') has a plurality of gripper units (210, 210 '), which at a predetermined uniform distance from each other, one behind the other along the circumferential circumference of the circulating element (202, 202 ') of the manipulation unit (200, 200') are arranged.

6. manipulation device (20, 20 ') according to one of claims 1 to 5, wherein a plurality of identically formed manipulation units (200, 200') are provided, which are arranged side by side in the width direction, so that the respective gripper units (210, 210 ' ) of the manipulation units (200, 200 ') are aligned with each other in the width direction.

7. manipulation device (20, 20 ') according to claim 6, wherein the manipulation units (200, 200') are separately adjustable in the width direction.

The manipulating device (20, 20 ') according to any one of claims 1 to 7, wherein a disc drum is rotatably disposed at the position provided for gripping a sheet trailing edge, the disc drum having a rotational axis extending in the width direction and a plurality thereof spaced apart in the width direction having spaced apart discs, by means of which a bow along it (B) is supported in a plane.

9. manipulation device (20, 20 ') according to claim 8, wherein each manipulation unit (200, 200') is arranged at a respective distance between two adjacent discs of the disc drum.

10. Delivery device (1) for sheet delivery in a sheet-processing printing machine, comprising:

an endless recirculating gripper system (10) adapted to be attached to

Sheet receiving position (B1) gripping sheets to be laid out (B) at the sheet leading edge thereof, for transporting the sheets (B) along a sheet transport path (BT) in the delivery device (1) and for releasing the sheet leading edge at a sheet storage position (B2) in the delivery device (1 ), a touch-based sheet brake device, which is arranged adjacent to the sheet storage position (B2) and which can be brought into contact with pressure-free zones on the pressure surfaces of the sheet (B) for braking to be deposited sheet (B), and a manipulation device (20, 20 ') according to one of claims 1 to 9, wherein the sheet brake device and the manipulation device (20, 20 ') are each separately activated and deactivated.