EP0707556A1

EP0707556A1 - Device for the transport and deposit of sheets in a stacking region of a rotary press

Info

Publication number: EP0707556A1
Application number: EP94922871A
Authority: EP
Inventors: Richard Burkhard Mack; Erich Michael Zahn
Original assignee: Heidelberger Druckmaschinen AG
Current assignee: Heidelberger Druckmaschinen AG
Priority date: 1993-07-05
Filing date: 1994-06-30
Publication date: 1996-04-24
Anticipated expiration: 2014-06-30
Also published as: DE4322324C2; DE4322324A1; WO1995001930A1; JPH08512274A; EP0707556B1; US6000695A; JP3380250B2

Abstract

Prior art devices for transporting and depositing sheets in a delivery region of a rotary press conceal a considerable hazard for a machine operator in that grab bridges carried by rotating conveyor chains to carry sheets are moved over a sheet stacking region. Such a hazard is eliminated by the object of the invention in that the delivery region is divided into a sheet transport region with a chain conveyor system possibly comprising a drying station and a stacking region with a pneumatic conveyor system.

Description

Device for transporting and storing sheets in a delivery area of a rotary sheet printing machine

The invention relates to a device for transporting and storing sheets in a delivery area of a rotary sheet printing machine with pneumatic sheet guide elements arranged below a sheet conveying path, which extend over the entire width of a respective sheet and with one

Chain conveyor system, which moves the sheets one after the other from a last sheet-guiding cylinder

Rotary sheet printing machine takes over, is transported along a conveyor line in a main direction directed towards a stacking device and is released for forming a storage stack on a stacking base located in the stacking device.

Such a device is already known from DE 36 29 720 A1. There are bladder-air-bended guiding rods arranged in sheet-conveying direction, whereby outer guiding rods are each delimited by a suction pipe. A tangentially directed flow field is formed between the individual bend bars and the suction pipes arranged on the outside, starting from the middle bend bar, which distributes blown air, which stretches the sheets to be transported, starting from the center, transversely to the sheet conveying direction. Such an arrangement can lead to the storage of color on the upper sections of the sheet of Lei rods, particularly in the display of double-sided fine and reverse copies. Furthermore, this solution from the prior art has the disadvantage that gripper bridges carried by revolving gripper chains are guided over the legstape l, so that, for example, a sample sheet removal represents a certain risk of injury to the printer. DE 38 41 909 C2 discloses a method and a device for the floating guiding of sheets or web-shaped material over a conveyor section, in particular a curved conveyor section along a chain center of a chain conveyor system. A plurality of nozzle boxes, separated from one another by suction shafts, are arranged below a conveyor path which is initially curved in a concave manner and then extends in a convex manner. Since the negative pressure effective in the suction shafts replaces the air cushions generated by the free jets emerging from the nozzle boxes, the goods to be transported are wavy. On the side of the sheet facing away from the nozzle boxes, a plurality of free-jet nozzles are provided which act on the sheets to be transported from this side. In addition, blades are formed on the conveyor chain, on which a flow shadow forms before the bends enter a channel formed by a partition with a narrowing cross section. In this known device, the chain conveyor system extends over the filing stack and special arrangements for a smear-free filing of the sheets on the filing stack are not provided.

The outlined solutions of the prior art have the common Nachtei le that revolving chain systems extend beyond the delivery point of the sheet, that these considerably limit the visibility of this delivery point and its accessibility and that a test sheet removal due to the rotating chain systems is an injury ri si o holds.

Based on the prior art set out, the invention has for its object to provide a device of the type mentioned in such a way that a provides a user-friendly option for removing sheets ejected from the machine.

According to the invention, this object is achieved in that the chain-releasing chain conveyor system is followed by a pneumatic conveyor system equipped with an Exe p La rwei marriage, which transports the sheets released by the chain conveyor system into a storage position located in the area of the stacking device and selectable by means of the copy switch and onto one the stacking level assigned to the selected storage position can drop.

The advantages that can be achieved with this solution are diverse in nature. On the one hand, the printer is relieved considerably by the fact that after a job is newly set up, the waste sheets that arise during the printing phase can be collected separately immediately. This collection takes place automatically on a special stacking level selected from the top of the storage stack. Furthermore, it is no longer necessary to intervene in the continuous delivery process of the sheets on a storage stack, since sample sheets can also be transported to a separate stacking level. The promotion of the sheets by means of aerodynamically generated forces into a respective storage position ensures that the sheets are deposited on the storage stack in a smear-free and scratch-free manner.

The solution according to the invention also allows the ejection of ejected sheets while avoiding moving parts such as. B. grapple bridges in the immediate vicinity of a control point on a Bogenaus casual. The arrangement of several stack levels at the end of the process line offers an easily accessible and easily viewable delivery option, both for waste copies during the start-up phase and for sample copies during production. A further development of the basic idea of the invention is characterized in that a first stacking level is provided above a second stacking level, which is formed by the top of the storage stack or the stacking base. In this way, an extremely space-saving arrangement for the optional storage of the sheets on the delivery stack or on a stacking level set apart is obtained in an advantageous manner.

The basic idea addressed is, in particular, a departure from the principle used in conventional generic devices of a self-contained functional unit in which the sheets are deposited by means of the same means of transport as the sheets from a last sheet-guiding cylinder

Take over rotary sheet printing machine. This basic idea is further pursued according to the invention to connect a gripperless functional unit to a chain conveyor system of a generic device.

In continuation of the underlying concept of the invention ^'ns is provided that the pneumatic conveying system comprises a jewei then depositing position assigned levitation guide means which lead a the copy diverter exiting sheets by means of an operably generated by the suspended guide means air flow between a top side of the sheet and the suspended guide means, and in the Transport storage position.

In the context of the invention it is further preferably provided that the pneumatic conveyor system comprises suction belt arrangements which take over a sheet released by the chain conveyor system at an unchanged speed and, depending on the position of the exemplar line, transport far in the direction of one of the levitation guide means. Furthermore, it is provided in a further embodiment of the invention that braking devices are provided on an underside of a sheet which is substantially at the level of the storage position and which brake a respective sheet before it reaches its storage position, the braking devices endless and revolving brake bands Associated suction boxes, over which the brake bands are guided, and B las air nozzles are provided, which create a trailing end of a respective bow by means of controlled B Las air jets while lowering the trailing end to the brake bands. With this training of braking devices, in addition to the pure braking effect as a result of the lowering of the trailing sheet end, it is also ensured that a respective subsequent sheet does not collide with a previous sheet currently in its storage position.

A further embodiment of the invention is characterized in that further blowing air nozzles are provided, which form an air cushion under each of the arches leaving the braking devices.

From these blowing air jets, free jets generate an air cushion between the sheet already deposited on the filing stack and a sheet leaving the braking device, which guarantees a smear-free and scratch-free sheet delivery in a respective stacking level.

In an advantageous further development of the invention it is provided that the first stacking level is formed by means of a first levitation guide device which forms a respective sheet by means of an air flow generated by the first levitation guide device in an activated state of the same between an underside of the sheet and the levitation guide device in one across to the main funding issue. With the precautions taken in this way, waste sheets, in particular, can be separated and disposed of in a particularly simple and user-friendly manner from a stream of sheets ejected successively from a rotary sheet printing machine. For this purpose, in the simplest case, a collection container for waste sheets can be connected to the levitation guide device that discharges the sheets, which can be easily placed on a corresponding side of the stacking device.

A further embodiment provides that the first levitation guide device has a guide section projecting laterally beyond the stacking device. This can be determined by a design of the guide overhang with a corresponding length, at which lateral distance from the stacking device, for example, a disposal place for marku laturbogen should be provided with the above-mentioned container.

With another advantageous embodiment, an orderly filing of laterally discharged sheets can also be achieved. This embodiment is characterized in that a third stacking level is provided, which, viewed in the dispensing direction, adjoins the guide section and is at a lower level than the first stacking level, above the guide section an at least partially overlapping second floating guide device is arranged, which takes over a respective bow by means of an air flow generated by the second levitation guide device in an activated state thereof between an upper side of the bow and the second levitation guide device from the first levitation guide device and in the dispensing direction into a dispensing position above the third Further promoted stacking level, and that the second levitation guide device is associated with a clocked sheet lower, which presses a trailing end of an at least substantially in the output position sheet down. In this case, the third stacking level is preferably provided for storing waste sheets and / or sample sheets.

In the case of a non-stop device assigned to the stacking device, it is preferably provided that the non-stop device is arranged on a side of the storage stack facing the chain conveyor system. This saves installation space and increases the clarity in the operating area of the stacking device.

Based on the subdivision of

In a device according to the invention equipped with a dryer device in the delivery area, functional units aligned basic principles of the invention are preferably provided that dryer stations are integrated into the chain conveyor system in a modular design. For this purpose, a preferred embodiment is characterized in that a horizontal branch of the chain conveyor system and dryer stations associated therewith on the one hand and an inclined branch of the chain conveyor system and dryer stations associated with this on the other hand form dryer modules which partially abut one another at separating points and partly on the stacking device and on connect an end section of the rotary sheet printing machine comprising the last sheet-guiding cylinder.

Such a construction opens up a further design option, according to which the chain conveyor system can be extended at a separation point by inserting a further dryer module. Details of the invention are explained below with reference to a drawing.

It shows:

1 is a side view of the delivery area,

2 shows an enlarged illustration of a detail from FIG. 1,

3 is an enlarged view of a detail from FIG. 2,

4 shows a schematic view in the direction of the left end face of the delivery area in FIG. 1 with the same being equipped with means according to the invention for lateral sheet removal.

From a last sheet-guiding cylinder 45 of a printing or finishing unit which is not shown in FIG. 1 and which precedes the delivery area, sheets 24 are taken over by a chain conveyor system 58 in the circumferential region of a chain conveyor system 58, along an empty run 4 of a conveyor chain arrangement 2 thereof following conveying path in a main conveying direction directed towards the stacking device 40 and released to form a storage stack 33 on a stacking base 53 located in the stacking device. The chain conveyor system 2 releases a respective bow in the area of a chain deflection 5 at one end of the leg rummy L 1 end of the chain conveyor system 58. From the laying drum 1 to the chain deflection 5, an uninterrupted levitation guide 6 preferably extends, which has a self-contained surface that follows the course of the empty run 4 with individual air openings. The levitation guide 6 is connected via several connections 7 to one suitable blowing medium. The chain deflection 5 is followed by an Exemp La rwei marriage, consisting of a steering segment 8 embedded in a suction belt arrangement 14, 17, 37 and a gusset 9 connected to it. A bow 24 released in the region of the chain deflection 5 becomes - depending on the position the deflection segments 8 - by means of a further one corresponding to the above

Suction belt arrangement 15, 16, 37, 38 in the direction of a first storage position above a first stacking level 10 or by means of the suction belt arrangement 14, 17, 37 in the direction of a second storage position above a second stacking level 11. Here, a respective storage position is determined by the position of the respective suspension guide means 25, 26 explained below. A stack of waste copies can be formed on the stack level 10, which is particularly the case during the pressing phase of a

Rotary sheet printing machine is important. In contrast, a storage stack 33 is formed from good sheets during the printing process in the stacking level 11. A braking device 12, 13 and stops 32 for aligning the sheets to be laid out are assigned to both stacking levels. During the production run, after removing the stacked Maku Laturbogen from the ongoing production, test sheets can be guided into the upper stacking level 10 via deflection segments 8 and laid out with exact edges. The sample sheets collected in the upper stacking level 10 can then be removed ergonomically without any risk of injury. Below the main stack 33 there is preferably a pallet conveyor device 38, with which the storage stack 33 can be removed from the stacking area in a direction transverse to the main conveying direction, while a non-stop device 35 merely indicated schematically here shows an uninterrupted delivery of the Arch 24 in the stacking level 11 allows. The arrangement of this non-stop device on the side of the storage stack Ls 33 facing the chain conveyor system 58 prevents the accessibility of the stack supply 40 from being impaired.

As can be seen particularly clearly from FIG. 2, suction belts 14 extend from below the chain guide 5 to a braking device 13. The suction belts 14 are guided over one or more suction boxes 17 arranged next to one another in a direction perpendicular to the plane of the drawing in FIG. 2 and run over to Um lenkro L Len 37; between the suction boxes 17, one of the deflection segments 8 is shown, to which, seen in the main order direction, a gusset 9 corresponding to the inclination of a suction belt 15 follows. A braking device 13 connects to the suction belts 14. Above the suction belts 14 and the braking device 13 are in their immediate vicinity extending over the storage stack 33 or the stacking pad 53

Levitation guide means 26 are provided. These are preferably formed in the form of a group of hollow profi les, which lie in one and the same horizontal plane and run in the main funding direction mentioned. They are operationally supplied with blown air via a pressure lusset Luß 7, which emerges through nozzles on the underside of a respective hollow profi le in the form of a free jet with a central jet directed essentially in the main direction. Such floating guide means are known for example from the publication DE 39 36 846 C1 and are used for the floating (contact-free) transport of flat goods, such as the sheet 24 in question here. Air nozzles 21 are let into these levitation means 26 above the braking device 13 B las. In a position of the deflection segments 8 that is not inclined, as opposed to the illustration in FIG. 2, the sheets 24 reach the braking device 13 via the suction belts 14 in continuous printing operation B las air nozzles 21 exiting B Las air steel 61 a trailing end of a respective bow 24 is applied to the endless circumferential brake band 19 (see FIG. 3) of the braking device 13. Since the

Braking devices 12, 13 and the suction belt arrangements 14, 15, 16, 17, 37 with a similar construction have the same principle of operation with only different belt speeds of the brake belts 18, 19 on the one hand and the suction belts 14, 15 on the other hand, is created by applying a nac running bow end to the Brake band 19 initiated with appropriate amplification of the suction effect of the braking device 13 braking the respective bow 24 without slippage relative to the brake band 19. After leaving the braking device 13, a now braked arch 24 reaches under the guidance by means of the floating guide i tte L 26 and under the influence of a certain supporting effect on the part of an air cushion on the underside of the arch 24 short-term storage position, from which it then moves to the Stack level 11 drops. The air cushion mentioned is generated by means of further B Las air nozzles, which can be seen most clearly in FIG. 3.

The sinking of a respective preceding sheet 24 from its storage position is initiated or promoted by a subsequent sheet 24, which successively removes the previous sheet 24 from the influence of the suction effect of the levitation guide means 26 in that the subsequent sheet 24 moves from the downward to the Braking device 13 pressed trailing end of the preceding sheet 24 ago between these and the levitation guide means 26 penetrates. Overall, it is thus possible to guide the sheet 24 without contact over the sheets 24 already deposited and to lay them thereon, and thus to avoid smearing and scratches. If, on the other hand, a sheet 24 is fed to the upper suction belts 15 by means of the steering segments 8 and the gusset 9, which also run over deflection rollers 37, this sheet 24 reaches a storage position above the stacking level 10 in an analogous manner as described above Braking device 12, analogous to the above description, delays the sheets 24. Sheets 24 deposited thereon are, for example, waste copies that occur during the start-up phase of the rotary sheet printing machine. During the printing of the machine, test sheets, after appropriate adjustment of the deflection segments 8, reach the upper stacking level 10. From there, they are considerably easier to remove than when the continuous delivery on the stacking stack 33 is ongoing. The stacking level 10 is also assigned a floating guide 25, which differs from Suction box 16 extends over the braking device 12 up to approximately the stop 32.

As already mentioned above, the individual sheets 24 to be transported into one of the stacking levels 10 or 11 are conveyed via the suction belts 14 and 15. The suction belts 14 and 15 revolving around deflection rollers 37 ^" move over the suction boxes 16 and 17 arranged below the suction belts 14 and 15. Due to the suction effect emanating from them, the arches 24 are not left to their own devices, but are rather subject to a defined force effect, which results in a Above the stack planes 10 and 11 there are respective levitation guide means 25 and 26, into each of which a controlled blast air nozzle 20 and 21 is let in at the top of the deflection rollers 37 below. The lower levitation guide means 26 extend over a longer area of the suction belt 14, while the upper levitation guide means 25 still overlap an end area of the suction belt 15. The conveyed sheet 24 remains thus never left to itself, but is guided by organs that partially overlap.

After passing through the deflection segments 8, a continuously aerodynamically generated action on the sheets 24 is thus ensured, with which a defined guidance of the sheets 24 in the stacking device 40 is achieved without the need for rotating gripper bridges.

In a further development of the invention shown schematically in FIG. 4, the first stacking level 10 is formed by means of a levitation guide device 55. This is analogous to the levitation guide means 26 described above and differs from this in that the nozzles are provided on the top of a respective hollow profi le that the hollow profi le extend transversely to the main conveying direction that the free jets from the nozzles essentially also exit transversely to the conveying direction of the central jet, and further by the fact that they are not operationally supplied with blown air g, but are only activated for the purpose of lateral discharge of sheets 24 lowered to the first ^' stacking level 10 by a corresponding supply of blown air. As can be seen from FIG. 4, the stacking device 40 (represented here by the stacking stack 33) is of the

Suspension guide device 55 protrudes laterally, namely from a guide section 54 of the suspension guide device 55. This already makes it possible to dispose of selected waste sheets by transporting them to a location located to the side of the stacking device 40 at a sufficient distance from the stacking device 40, where a waste container is all set up can be.

For an orderly storage of sheets 24, which are discharged laterally by means of the suspension guide 55, a third stacking level 46 is provided, which is in the seen transversely to the main conveying direction connects to the guide section 54. Such a third stacking level 46 is formed, for example, by a support plate 64 which may be arranged in a stationary or height-adjustable manner, or by an upper side of a partial stack already present thereon, for example of waste sheets or test sheets. With a corresponding setting of the deflection segments 8 (FIG. 2), these sheets are first fed in the main conveying direction of the first stacking level 10 and are deflected from here by means of the levitation guide device 55 into an output direction running transversely to the main conveying direction and subjected to the influence of a second levitation guide device 56. The second levitation guide device 56 is in turn formed analogously to the previously described levitation guide means 26 and differs from these mainly in that, by appropriate orientation of the hollow profiles mentioned and the air emerging on their undersides, air-free jets on an upper side of an influence area ch this blown air-free blasting sheet 24 exerts a conveying effect in the transverse direction of the main conveying direction. The conveying effects of the levitation guide device 55 and the second levitation guide device 56 exerted on a sheet 24 are thus rectified and complement one another in a region designated by 57 in FIG. 4 via lapping area, in which the second levitation guide device 56 arranged above the already mentioned guide section 54 supports the guide section 54 covered. The extent of the overlap area 57 seen in the output direction can certainly be chosen to be shorter than the corresponding extent of the guide section 54. For the dimensioning of the overlap area 57, it is only essential that a sheet 24 is transferred from the levitation guide device 55, which is effective on its underside, to that on the top thereof Effective second levitation guide device 56 takes place, which then conveys a transferred sheet into an output position above the third stacking level 46.

As can be seen from what has been said so far, the third stacking level 46 is not intended for forming the storage stack 33 (from a good sheet). The levitation guide devices 55 and 56 are therefore not operationally supplied with compressed air, but are activated as required. On the support plate 64 located below the output position defined by the second levitation guide device 56, however, a partial stack 51 can be deposited from sheets that follow one another in time with the machine. For this purpose, it is necessary for a preceding sheet 24 to be released from its dispensing position immediately below the second levitation guide device 56 and to sink to the third stacking level 46. For this purpose, the third stacking level 46 is arranged at a lower level than the first stacking level 10.

As already explained in connection with the blow nozzles 20, 21 (FIG. 3), this sinking is initiated or promoted in that a subsequent sheet 24 into a gap between the top of a preceding sheet 24 and the underside of the second levitation guide device 56 is pushed and its influence on the preceding sheet 24 thus cancels. The penetration of the following sheet 24 into the said gap is in turn favored by the fact that a trailing end of the preceding sheet 24 is pressed down by means of a clocked sheet feeder 63. A corresponding bend holder 63 is assigned to the second levitation guide device 56 and is designed, for example, in the form of a roller with brush segments or in the form of a blow tube with nozzles aligned with the bends 24. As further indicated in FIG. 4, in particular parts stack 51 formed from waste sheets can be combined into suitable waste stack 52 (not shown) via suitable means for stacking, which stack can be arranged below the support plate 64 until it is disposed of.

In the case of a pallet conveyor 38 for the storage stack 33 oriented transversely to the main conveying direction, already indicated in connection with FIG. 1, however, it is advisable to dispose of a partial stack 51 immediately after reaching a certain height. However, in conjunction with a height-adjustable support plate 64, this height can still assume such dimensions that when it is lowered, the support plate 64 is approximately at the level of the lower edge of straight-line pushers provided in the stacking device 40.

In addition, in a non-activated state, in particular the floating guide device 55, it is also possible to form a partial stack 34 on the first stacking level 10 ^″ . Such a partial stack 34 from possibly only a small number of sheets 24 offers an extremely user-friendly possibility for removal of sample sheets.

The basic idea of the invention, which is based on a subdivision of functional groups, leads to a delivery area equipped with a drying device within the chain conveyor system

Rotary sheet printing machine also for a strict separation of the stack formation on the one hand and the function groups to be assigned to the area of a dryer section on the other hand, which are inseparably linked in conventional generic devices if they are equipped with a dryer device. In contrast, in one embodiment of the invention is not only a strict structural separation of the mentioned functional groups but also a modular design of dryer stations provided, which are integrated in the chain conveyor system 58. 1, a first horizontal branch of the chain conveyor system 58 and a dryer station 57 assigned to it, a second horizontal branch of the chain conveyor system 58 and dryer stations 28, 29 assigned to it, and an inclined branch of the chain conveyor system 58 and the latter assigned dryer stations 30, 31, dryer modules 42, 62 and 43, the dryer module 62 being inserted at a separation point 39 in order to extend a dryer section formed by the dryer modules 42 and 43, with a corresponding extension of the conveyor chain arrangement 2. The dryer modules 42, 62 meet at the already mentioned and the dryer modules 63, 43 at another separation point 39. A further separation point 39 has proven to be of particular importance, at which the dryer module 42 connects to the stacking device 40. This separation point embodies the separation of functional groups undertaken in the context of the invention with a view to the formation of the storage stack 33. The separation point 39 between the dryer module 43 and the end section 44 of the rotary sheet printing machine is of similar importance with regard to a structural separation of the functional units for sheet delivery on the one hand and for sheet processing by others.

Overall, the delivery area is thus subdivided into a sheet transport area with a given chain conveyor system including all dryer stations and a stacking area with a pneumatic conveyor system. LIST OF REFERENCE NUMBERS

Romme l Conveyor chain arrangement

Empty strand chain deflection hover guide connection deflection segment gusset first stacking level second stacking level Braking device Braking device Suction tape Suction tape Suction box Suction box Brake band Brake band Blowing air nozzle (controlled) Blowing air nozzle (controlled) Suction box Blowing air nozzle Bow Floating guide Floating guide means Drying station on drying station Drying station Drying station Drying station Stop Storage disc Partial istape l non-stop device

In order to handle pallet conveyors, separating point stacking device

Dryer module Dryer module End section of the rotary printing press Zy li nder third stacking level

Partial stack Waste stack Stacking pad Guide section of the floating guide device 55 Floating guide device Floating guide device Overlap area Chain conveyor system Pneumatic conveyor system Blown air jet Blown air jet Dryer module Bogenni ederha Iter Support plate

Claims

PATENT CLAIMS

Device for transporting and depositing sheets in a delivery area of a rotary sheet printing machine with pneumatic sheet elements arranged below a sheet conveying path, which extend over the entire width of a respective sheet and with a chain conveying system which removes the sheets one after the other from a last sheet-guiding cylinder Rotary sheet printing machine takes over, transported along a conveyor line in a main conveying direction directed towards a stacking device and releases it to form a storage stack on a stacking base located in the stacking device, characterized in that a chain conveyor system (58) releasing the sheets has a copy switch (8, 9 ) equipped pneumatic conveyor system (59) which connects the sheets (24) released by the chain conveyor system (58) into an area located in the area of the stacking device (40) by means of the copy switch (8, 9 ) selectable storage position is transported and lowered to a stacking level (10, 11) assigned to the selected storage position.

Apparatus according to claim 1, d a d u r c h g e k e n n z e i c h n e t that a first stacking level (10) above a second

Stacking level (11) is provided, which is formed from the top of the storage stack (33) or the stacked layer (53). Device according to claim 1, characterized in that the pneumatic conveyor system (59) of a respective

Storage position assigned floating guide means (25, 26) which a sheet (24) leaving the ExempLarwei marriage (8,9) by means of one of the

Levitation guide means (25, 26) generated operationally

Lead air flow between a top of the arc (24) and the levitation guide means (25, 26) and into the

Transport storage position.

Apparatus according to claim 3, d a d u r c h g e k e n n z e i c h n e t that the pneumatic conveyor system (59)

Suction belt arrangements (14, 15, 16, 17, 37) comprises one released by the chain conveyor system (48)

Take over bow (24) with unchanged speed and depending on the position of the copy switch (8, 9) in

Transport direction on to one of the levitation guide means (25, 26).

Device according to Claim 1, characterized in that braking devices (12, 13) acting on an underside of a sheet (24) substantially at the level of the storage position are provided, which brake a respective sheet (24) before it reaches its storage position Braking devices (12, 13) comprise endless circumferential brake bands (18, 19) and associated suction boxes (22) over which the brake bands (18, 19) are guided, and blowing air nozzles (20, 21) are provided, each of which trailing End of each arc (24) by means of controlled B las air jets (60, 61) while lowering the Place the trailing end on the brake bands (18, 19).

6. The device according to claim 5, d a d u r c h g e k e n n z e i c h n e t that further B las air nozzles (23) are provided, which form an air cushion under each of the braking devices (12, 13) leaving sheet (24).

7. The device according to claim 2, characterized in that the first stacking plane (10) is formed by means of a first levitation guide device (55) which between a respective arc (24) by means of an air flow generated by the first levitation guide device (55) in an activated state thereof from an underside of the sheet (24) and the levitation guide device (55) in a direction perpendicular to the main conveying direction.

8. Apparatus according to claim 7, characterized in _/ that the first suspended guide device (55) comprises a stacking device (40) projecting laterally beyond the guide portion (54).

Apparatus according to claim 8, so that a third stacking level (46) is provided, which, viewed in the direction of discharge, corresponds to the

Guide section (54) connects and is on a lower than the first stacking level (10)

Level is located above the guide section (54) a second, at least partially covering this A levitation guide device (56) is arranged which, by means of an air flow generated by the second levitation guide device (56) in an activated state of the same, between the top of the arc (24) and the second levitation guide device (56) by the first levitation guide device ( 55) takes over and further promotes in the dispensing direction into a dispensing position above the third stacking level (46), and the second levitation guide device (56) is assigned a clocked bow holder (63), which has a trailing end of an at least substantially in the Output position located sheet (24) presses down.

10. The device according to claim 9, the use of the third stacking level (46) for storing waste sheets and / or sample sheets.

11. The device according to claim 1, with a non-stop device, so that the non-stop device is arranged on a side of the storage stack (33) facing the chain conveyor system (58).

12. The apparatus of claim 1 with a

Chain conveyor system (58) assigned dryer device, characterized in that in the chain conveyor system (58) dryer stations are integrated in a modular design (27 to 31). 13. The apparatus according to claim 12, characterized _{/ in} that a horizontal branch of the chain conveyor system (58) and associated dryer stations (27 to 29) on the one hand and an inclined branch of the

Chain conveyor system (58) and associated with it

Drying stations (30, 31) on the other hand

Form dryer modules (42, 43), which abut each other at parting points (39) and partly on the

Stacking device (40) and to one of the last arc-guiding cylinder (45)

Connect the end section (44) of the rotary sheet printing machine.

14. Apparatus according to claim 13, characterized in _/ that the chain conveyor system (58) is extendable with the interposition of a further drier module (62) at a separating point (39).