DE102008031710A1 - Sheet delivery of a printing sheet processing machine, especially rotary printing machine - Google Patents

Abstract

The invention relates to a sheet delivery of a printing sheet processing machine, in particular rotary printing machine. The invention has for its object to make the supply of trained as a consumer suction or Blasluftelemente such that can be dispensed with the hitherto customary tubing between a single pressure source and the consumer and costly adjusting means. The object is erfindusluftelement with at least one individually controllable pressure source 15 is in communication.

Description

The The invention relates to a sheet delivery of a printing sheet processing Machine, in particular rotary printing machine with an electronic Control and regulating device, wherein the sheet delivery more than a stack with printed sheets arranged with Suction or blown air operable sheet brake elements, the are operatively connected to a pressure source, and wherein the sheet brake elements are housed in a carriage of the sheet delivery, both in as well as against the conveying direction of the signatures is adjustable.

A sheet delivery with an electronic control and regulating device, the control of the speed of rotation with a shaft connected rotationally symmetric suction or Blasluftelemente, the axial adjustment of the suction or Blasluftelemente to adapt to different sheet format widths, the control of the connection and disconnection Suction or blown air elements and their switching from suction to blown air, is from the document DE 34 13 179 C2 known. For the respective adjustment or adjustment actuating means are present, which are signal-transmitting connected to the electronic control or regulating device. Actuators and solenoid valves are provided here as adjusting means.

The Solenoid valves are integrated in flexible hose lines, over the pressure medium air with pressure from a pressure source is directed to the suction or blowing air elements or over the a generated in a pressure source vacuum to the suction or Blasluftelemente can be applied. The necessarily in their arrangement level lead to be made adjustments of the suction or Blasluftelemente that they are exposed to high mechanical loads, in particular bending stresses are that cause defective hose lines over time.

The Hose lines are also a hindrance to access to others Function units of the sheet delivery, especially during replacement or the repair of the other functional units.

About that In addition, form the solenoid valves with the associated servo motors a not to be underestimated, adversely affecting the sheet delivery Cost factor.

Out DE 195 43 963 C1 is a sheet brake device with at least two counter-rotating brake elements known. In essence, the brake elements have the shape of a truncated cone whose conical surface has a plurality of openings which are coupled by means of lines with a suction air source.

Of the Invention is therefore the object of the supply of as Consumers designed to make trained Bogenbremselemente such that to the usual tubing between pressure source and consumers and dispensed the costly adjusting means can be. The invention is also based on the object, one the consumer and the pressure source module-like trained functional unit to create, if necessary, without significant installation effort against a similar modular functional unit is interchangeable.

The The object is achieved by the features of claim 1 and by the features of the claim 10 solved.

To to claim 1, the sheet delivery of a printing sheet processing machine, in particular rotary printing machine, with an electronic control and regulating device via several and in the conveying direction of the bow in front of a deposit pile printed sheet arranged axially displaceable sheet brake elements on, which are connected to a pressure source (air generator).

each Bogenbremselement can rotary revolving, with an electric motor rotatably connected rotary shaft and preferably on the shaft be displaced, wherein preferably the rotationally driven shaft in a carriage of the sheet delivery is included in both as well as against the sheet travel direction of the printing sheet adjustable is. Each sheet brake element can have circumferentially arranged air flow openings comprise and is at least one electrically controllable each Pressure source or air source in conjunction. The pressure source is included an overpressure or vacuum source, preferably in Art a fan that is controllable in its speed and in its direction of rotation is reversible.

The Pressure source may generally be at least one air generator, the preferably in the operating positions blown air production or suction air generation can be used.

With the assignment of a pressure source to each sheet brake element deleted advantageously the elaborate according to the prior art Tubing within the sheet delivery and it is eliminated the at least one control valve with servomotor for influencing the intensity of the sheet brake elements supplied Pressure medium.

Advantageously, every single Luf terzeuger, for example, each individual, preferably fan, which is preferably a radial fan, signal transmitting connected to the control and regulating device, which for each sheet brake element individually via the control room or other control of the printing press, the suction or blowing power of the air generator, such as the fan, is adjustable.

By an example controllable speed of the fan motor and by the reversibility of its direction of rotation can be to simple Way from suction to blast air supply (or vice versa) of the sheet brake elements be switched and also is also in a simple way the Suction or blowing power can be influenced on the sheet brake elements.

The set power values are also in the Control and regulating device storable and, if necessary, off a storage medium of the control and regulating device retrievable.

Further each of the sheet brake elements is via a machine control or a control station needs-based in its functioning can be switched on and off.

Of Furthermore, in case of failure, only one can advantageously be used Air generator, such as fans, the printing process the press continues until a suitable time be on which the machine anyway preferred short-term shut down becomes. During the inevitable interruption the printing process then the failed air generator, z. B. Fan, to be replaced.

In a further advantageous embodiment of the invention, each Bogenbremselement together with the air generator, z. Eg fans, be designed as a module-like functional unit, which as if necessary, for example in the case of a defect, complete is interchangeable with another similar entity.

In Further embodiment of the invention can also several Sheet brake elements, for example a first and a second suction or blowing air element, together to a common, in the sheet delivery arranged, powerful air generators (or a pressure source), z. B. fan, connected. However, with the restriction that for a slightly additional, preferably flexible tubing or piping is required and that on the other hand an individual operation of each individual, for example Suction or blown air element deleted.

Also a necessary axial adjustment of a sheet brake element is only possible with the other sheet brake element, unless a sufficiently flexible tubing is at least between the one sheet brake element and the pressure source available.

As a sheet brake, especially as suction or Blasluftelemente found in known rotary orbital suction or Blasluftringe or at least one known per se, rotationally circulating suction or Blasluftwaltze or at least one rotationally circulating brake band or rotatably rotating brake elements according to DE 195 43 963 C1 Use. Alternatively or in combination suction or blowing plates can also be used.

Conceivable Furthermore, instead of single, comparatively narrow suction or blowing air rings, several across the width of the printing sheet arranged to provide wide suction or blast rolls, wherein Each suction / blower roll or each suction / blowing plate with a powerful Air supply, preferably a correspondingly powerful Fan, is operatively connected.

To The patent claim 10 is the modular design of the functional unit from a holding means in which at least releasably arranged, for example recorded rotationally symmetrical sheet brake rotatable is, from a arranged on the holding means geared motor with pinion for axial adjustment of the module, and at least a pressure source communicating with the sheet brake element, which is an overpressure and / or vacuum source.

In Advantageous training, the pressure source is in its direction of rotation reversible and variable-speed air generator, in particular Fan, preferably a radial fan, the signal-transmitting connected to the control and regulating device of the machine is.

The Bogenbremselement can preferably as a suction or Blasluftelement be ring-shaped or cylindrical-like and radially peripherally have a plurality of air flow openings.

If each sheet brake element with a single air generator, preferred Fan, is in operative connection, is the air generator, as already mentioned, in an advantageous manner variable speed and Reversible in its direction of rotation. This is the air generator for one with regard to the required level of suction or blowing air adjustable in its speed and the other is the air generator through Reversal of its direction of rotation of, for example, suction air generation Blown air generation switchable (and vice versa).

Alternatively to the active compound with a single air generator, z. B. fan, each sheet brake element, a first air generator, z. As fan, be assigned, which serves only to generate a suction air flow and a second air generator, z. B. fan, is used only to generate a blast air stream.

In a further embodiment of a sheet brake element, especially as Suction / Blasluftwaltze, this or this in sheet travel direction a suction / blowing plate upstream. When arranging several suction / blast rolls Depending on the needs of each suction / blower roll a suction / blowing plate be upstream. There is each suction / blowing plate and each suction / blast air roller coupled with its own pressure source as an air generator.

In Another training may be one or each suction / blowing plate Place the suction / air blast roll to be arranged.

The Invention will be described below with reference to an embodiment be explained in more detail.

In show the figures:

1 a perspective view of the recorded in a carriage of a sheet delivery shaft with rotatably connected sheet brake elements, each suction or Blasluftelement is in communication with a fan,

2 a perspective view of a module-like, consisting of a sheet brake element and a fan functional unit,

3 a sheet brake element in the special training as suction / blowing plate,

4 a combination of suction / blowing air elements, formed from the training gem. 2 and 3 ,

One in and against the sheet travel direction 1 (Conveying direction) movable carriage 2 a sheet boom, not shown here, a printing sheet processing machine is in the frame wall 3 of the sheet delivery. From the frame wall 3 Here is only hinted at the one represented in the first Traverse 2.1 of the sled 2 is included. The sled 2 is in its longitudinal extension end by the first traverse 2.1 and through a second traverse 2.2 limited. In the trusses 2.1 and 2.2 is designed as a Vielkantwelle drive shaft 4 releasably stored. With the drive shaft 4 are several Bogenbremselemente, especially suction or Blasluftelemente 5 , rotatably connected. The relevant suction or blown air element 5 is in a holding means 6 taken in turn, in turn, with one, extending the length of the sled 2 extending and end in the respective first and second traverse 2.1 and 2.2 recorded first sliding guide 7 communicates. To stabilize the bracket 6 additionally by a support 8th with an axis parallel to the first sliding guide 7 extending second sliding guide 9 connected. Each holding means 6 is an electrically controllable geared motor 10 associated with one in the holder 6 recorded, geared means 11 , shown in 2 , is operatively connected. The gearing agent 11 in turn, stands with one in the first slide 7 existing gearing 12 in action.

By controlling the electric geared motor 10 is every holding means 6 together with the relevant suction or blown air element 5 along the drive shaft 4 adjustable to pressure-free positions of a printing substrate (printing sheet). The drive shaft 4 itself is with an electromotive drive 13 , either directly or via a gear unit 14 , with the second traverse 2.2 mounted drive shaft 4 connected. With the electric motor drive 13 can thus the speed of the suction or Blasluftelemente 5 be set individually on the existing control and regulating device of the printing press.

Each suction or blowing air element shown here by way of example 5 is designed as a so-called Saugluft- or Blasluftrad, so kept narrow in its axial extent that it circumferentially at least one circumferential row of openings 5.1 for the outlet of the blowing air or for generating a circumferential suction.

According to the present invention, each of the suction or blast air elements stands 5 each with an individually controllable pressure source 15 in this way, the one, in comparison with the prior art, preferably no or only minimal tubing or piping 16 requires.

The pressure source 15 may generally be at least one air generator, which is preferably used in the operating positions blowing air or suction air generation.

In the present example, the air generator according to the invention is equipped with an electric motor drive not shown here fan, preferably a radial fan whose speed is variable and which is reversible in its direction of rotation. Each individual fan is connected to the control and regulating device of the printing press in terms of circuitry and signal transmission, so that each individual suction or blown air element 5 Depending on demand, in terms of air volume or air pressure, can be applied individually.

As in particular from 2 can be seen forms the suction or Blasluftelement 5 with the holding means 6 , the pillar 8th and the gear means 11 on the one hand and on the holding means 6 arranged geared motor 10 and the pressure source 15 with the piping 16 on the other hand, a modular functional unit. This can be replaced if necessary, in a simple and cost-effective manner, the relevant modular functional unit against another similar modular functional unit. Here, the drive shaft 4 be moved or removed in the axial direction, such that the respective suction or Blasluftelement 5 from the drive shaft 4 is disconnected. Subsequently, the functional unit can be exchanged and the drive shaft is again with the respective suction or Blasluftelement 5 brought into operative connection.

Alternatively to the in the 1 and 2 illustrated embodiment of the invention, for example, two adjacently arranged suction and Blasluftelemente 5 to a common source of pressure 15 be connected, but with the possible restriction that the axial displaceability speed only in pairs, if both suction or compressed air elements with the pressure source 15 are cased.

It is also conceivable, each suction and Blasluftelement 5 a first and second pressure source 15 assign, with the one pressure source 15 as a compressed air source and the other acts as a suction or vacuum source.

In a further embodiment, each sheet brake element, especially each individual suction / blowing air element 5 , each with an immediately adjacent suction / blowing plate 17 be combined. In this embodiment, each such suction / blowing plate 17 directly to the associated suction and blowing air element 5 in sheet travel direction 1 upstream of the printing sheet. Preferably, each suction / blowing plate 17 with its own pressure source 15 coupled as an air generator. In a preferred arrangement of several suction / blowing air elements 5 About the format width of the printing sheet can each suction / blowing air element 5 or even just individual suction / Blasluftelementen 5 one suction / blowing plate each 17 be assigned.

In a further embodiment, at the position of the suction and blowing air elements 5 also suction / blowing plates 17 be arranged, which take over the function of the sheet brakes. In this embodiment, the respective suction / blowing plate 17 in the appropriate holding means 4 be arranged releasably, after previously the corresponding suction / Blasluftelement 5 was removed (and vice versa). Here, too, each suction / blowing plate is preferred 17 with its own pressure source 15 coupled as an air generator.

Are the suction / blowing air elements 5 and the suction / blowing plates 17 optionally in use, so in a first embodiment, the drive shaft 4 remain in the device. Here is the drive shaft 4 preferably switched torque-free. At least every suction / blowing plate 17 drive side of the drive shaft 4 separated. In the second embodiment, in the operation with at least one suction / blowing plate 17 the drive shaft 4 be removed from the device.

Each suction / blowing plate 17 includes a surface associated with the printing sheet 18 with air flow openings 5.1 , The air flow openings 5.1 may be arranged in alignment in a row. The surface 18 is preferably flat, arranged at a small distance parallel to the conveying plane of the printing sheet.

In a first training each suction / blowing plate 17 include a flow chamber that communicates with the air flow openings 5.1 and one individually controllable pressure source 15 (Air generator) is in operative connection. In a second embodiment, each suction / blowing plate 17 include a plurality of flow chambers that individually, in groups or in total with the air flow openings 5.1 are in operative connection. Suction / blast plates 17 with a plurality of flow chambers can advantageously be operated jointly or individually with suction air and / or blown air. By separate flow chambers different suction / blowing pressures can be realized.

In these training can each have an individually controllable pressure source 15 or can several such pressure sources 15 be in operative connection with the flow chambers. The at least one pressure source 15 may in turn be an already described air generator, which is preferably used in the operating positions blowing air or suction air.

• – Saug-/Blasluftelement 5 oder
• – Saug-/Blasplatte 17 oder
• – Saug-/Blasluftelement 5 in Kombination mit vorgeordneter Saug-/Blasplatte 17

motorisch oder manuell über die Formatbreite der Bedruckbogen axial verfahren werden.The complete sheet brake unit with at least one pressure source 15 can in the particular training as

• - suction / blowing air element 5 or
• - suction / blowing plate 17 or
• - suction / blowing air element 5 in combination with upstream suction / blowing plate 17

be moved axially or manually over the format width of the printing sheet.

In summary, each sheet brake element 5 ; 17 with at least one individually controllable pressure source 15 as air producer in connection. In training as a sheet brake module this includes a holding means 6 with a sheet brake member detachably mounted thereon 5 ; 17 , Furthermore, one on the holding means 6 arranged geared motor 10 with gear means 11 for axial adjustment of the module along a shaft 4 and at least one on the holding means 6 arranged, driven by an electric motor and electrically controllable pressure source 15 as an air producer, with the sheet brake element 5 ; 17 communicates.

In the training of the sheet brake element 5 ; 17 as a suction / blowing plate 17 , This has a surface associated with the printing sheet 18 with air flow openings 5.1 , on. Every sheet brake element 5 ; 17 forms together with the pressure source 15 a modular functional unit and can in the or against the sheet travel direction 1 adjustable slide 2 be included in the sheet delivery.

As sheet brake module for the boom of a sheet-fed press, the sheet brake element 5 ; 17 a rotationally rotating, with the electric motor driven rotary drive shaft 4 rotatably connected and axially on the drive shaft 4 slidable suction or blown air element 5 be, which circumferentially arranged air flow openings 5.1 includes.

The sheet brake element 5 ; 17 can be a suction / blowing plate 17 comprising a surface associated with the printing sheet 18 with air flow openings 5.1 , having.

The sheet brake element 5 ; 17 can be a rotationally rotating, with an electric motor driven rotary drive shaft 4 rotatably connected and axially on the drive shaft 4 slidable suction or blown air element 5 be, which circumferentially arranged air flow openings 5.1 includes, and that this suction or Blasluftelement 5 in sheet travel direction 1 a suction / blowing plate 17 is upstream.

At the holding means 6 can optionally be a suction or blown air element 5 or a suction / blowing plate 17 be arranged detachably. This is in the presence of the drive shaft 4 the contact to the suction / blowing plate 17 interrupted. Alternatively, optionally, an arrangement of at least one spur gear (not shown) on the holding means 6 be arranged detachably. In a development can in sheet travel direction 1 a plurality of spurs arranged one behind the other, preferably with the spore tips on a plane, on the holding means 6 be arranged detachably.

1

Sheet running direction

2

carriage

2.1

traverse

2.2

traverse

3

frame wall

4

drive shaft

5

suction or blown air element

5.1

Air-flow opening

6

holding means

7

first slide

8th

support

9

second slide

10

Transmission servomotor

11

getriebliches medium

12

gearing

13

drive

14

gear unit

15

pressure source

16

Tubing / piping

17

Suction / blowing plate

18

surface

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• - DE 3413179 C2 [0002]
• - DE 19543963 C1 [0006, 0021]

Claims (15)

Sheet delivery of a printing sheet processing machine, in particular rotary printing machine with an electronic control and regulating device, the sheet delivery having a plurality of above and before a stack printed sheet arranged with Saugluft- or blown air operable sheet brake elements, which are operatively connected to a pressure source, and wherein the sheet brake elements in one Carriage of the sheet delivery are added, which is adjustable both in and against the sheet travel direction of the printing sheet, characterized in that each sheet brake element ( 5 ; 17 ) with at least one individually controllable pressure source ( 15 ) is connected as an air generator. Sheet delivery according to claim 1, characterized in that at least one first and second sheet brake element ( 5 ; 17 ) together with a single pressure source ( 15 ). Sheet delivery according to claim 1 or 2, characterized in that the sheet brake element ( 5 ; 17 ) a rotationally rotating, with an electric motor rotationally driven drive shaft ( 4 ) rotatably connected and axially on the drive shaft ( 4 ) displaceable suction or Blasluftelment ( 5 ), which circumferentially arranged air flow openings ( 5.1 ). Sheet delivery according to claim 1 or 2, characterized in that the sheet brake element ( 5 ; 17 ) a suction / blowing plate ( 17 ) comprising a surface ( 18 ) with air flow openings ( 5.1 .) having. Sheet delivery according to one or more of the preceding claims, characterized in that each sheet brake element ( 5 ; 17 ) together with the pressure source ( 15 ) forms a module-like functional unit. Sheet delivery according to claim 5, characterized in that the module-like functional units in the in or against the sheet travel direction ( 1 ) adjustable slides ( 2 ) of the sheet delivery are received. Sheet delivery according to one of the preceding claims, characterized in that each of the pressure sources ( 15 ) is signal-transmitting connected to the control and regulating device. Sheet delivery according to claim 1, characterized in that the drive of each pressure source ( 15 ) In its speed is individually and demand-dependent controllable. Sheet delivery according to claim 1, characterized in that the drive of each pressure source ( 15 ) is reversible in its direction of rotation. Sheet brake module for the sheet delivery of a printing machine, characterized by a holding means ( 6 ) with releasably arranged sheet brake element ( 5 ; 17 ), one on the holding means ( 6 ) arranged geared motor ( 10 ) with geared means ( 11 ) for axial displacement of the module along a shaft ( 4 ), and at least one on the holding means ( 6 ) arranged, driven by an electric motor and electrically controllable pressure source ( 15 ) as an air generator, with the sheet brake element ( 5 ; 17 ). Sheet brake module according to claim 10, characterized in that the sheet brake element is a rotationally driven in rotation suction or Blasluftelement ( 5 ). Sheet brake module according to claim 10, characterized in that the sheet brake element ( 5 ; 17 ) a rotationally rotating, with an electric motor rotationally driven drive shaft ( 4 ) rotatably connected and axially on the drive shaft ( 4 ) displaceable suction or Blasluftelment ( 5 ), which circumferentially arranged air flow openings ( 5.1 ). Sheet brake module according to claim 10, characterized in that the sheet brake element ( 5 ; 17 ) a suction / blowing plate ( 17 ) comprising a surface ( 18 ) with air flow openings ( 5.1 .) having. Sheet brake module according to at least claim 10, characterized in that the sheet brake element ( 5 ; 17 ) a rotationally rotating, with an electric motor rotationally driven drive shaft ( 4 ) rotatably connected and axially on the drive shaft ( 4 ) displaceable suction or blown air element ( 5 ), which circumferentially arranged air flow openings ( 5.1 ) and that this suction or blown air element ( 5 ) in sheet travel direction ( 1 ) a suction / blowing plate ( 17 ) is arranged upstream. Sheet brake module according to claim 10, characterized in that optionally a suction or blown air element ( 5 ) or a suction / blowing plate ( 17 ) or a Anord tion of at least one spur wheel releasably on the holding means ( 6 ) can be arranged.