EP0741020B2 - Rotary printing machine having a free mountable folding apparatus - Google Patents

Description

The invention relates to a rotary printing machine with a folding apparatus after the Preamble of claim 1.

Conventional rotary printing presses become or become the folders driven and synchronized by a main drive via a propshaft. Most of time Several printing units and a folder are placed in a line. For the Longitudinal shaft concept, this is the most cost-effective drive. Additional folders, even if it is just back-up folders, are in the overall system integrated.

An example of a known drive, for example according to DE 41 27 321 A1, is shown schematically in Fig. 1. Here, the coupling is made by the longitudinal shaft 1.10 to the folder comprising a knife cylinder 2, a collection cylinder 3 and a jaw cylinder 4, mechanically via a longitudinal shaft gearbox 1, different gears 1.20, a shaft 1.23 on a with a Bevel gear 1.24 coupled intermediate 1.3 or alternatively to the with a bevel gear 1.24 coupled knife cylinder 2. The cylinders 2, 3 and 4 are with each other mechanically coupled via spur gears. The disadvantage here is that the cylinder 2, 3 and 4 to each other and with respect to the longitudinal shaft 1.10 in the field of backlash can take any position. This is due to the cylinders effective moments, e.g. Curve controls or cutting stroke. This is not avoidable irregularities are noticeable in the folding tolerances.

A rotary printing machine with at least one folding apparatus, by Equipment with at least one own drive motor mechanically independent is driven at least by printing units of the printing press is EP 0 567 741 A1, DE-A 2 046 131, GB 2 149 149 A, from "Deutscher Drucker" No. 14-15 from 13.4.1995, pages w46 ff and from "newspaper technology", December 1991, pages 78-80, known. The single drive of folders is finally out of the post-published EP 0 699 524 A2.

DE 26 14 665 A1 relates to a folding apparatus, which within a printing unit series placed on a type of cassette interchangeable folding mechanism having. The replaceable folding mechanism is in the course of the exchange in lowered the roller basement. Finally, U.S. Patent 4,564,470 relates to a folder with components that are vertically offset from each other in a frame of the folder are arranged.

The invention has set itself the task of flexibility in terms of Configurability of a rotary printing press, as far as cutting, folding and Laying out is affected, increase.

It is also preferable to register setting while preventing, at least reduction of folding inaccuracies due to the backlash of the Gears in the drive train of the folder individually for the folder can be made.

This object is solved by the subject matter of claim 1.

The invention relates to a rotary printing press with at least one folding apparatus, the at least one knife and a jaw cylinder comprises and through Equipment with at least one own drive motor mechanically independent is at least driven by printing units of the printing press and thereof is independently configurable and registerable.

Because of the no longer needed mechanical coupling with the printing units is the free arrangement or adjustability of the folder to the printing units and advantageously also to a folding structure and a folding superstructure, without possible to cause additional costs.

Since preferably a mechanical connection between the folder and the folding structure or the fold superstructure does not exist, the flexibility is also in the configuration of these three functional groups increased. For example, one Assignment of only one structure and a superstructure to two folders possible.

Zahnspielproblemen is counteracted while the drive motor for the Folder for driving the other components of the printing press electrically is synchronized. The single drive allows the folder independently of the Position of the printing units to rotate to any folding position and thereby the Approach cut register in a simple manner. This advantage is especially true Paper feed into a back-up folder useful as with such a back-up Folder over a serving as a reference zero position of the drive the Cutting register can be approached. By the invention, the Folding tolerances minimized.

According to the invention, a first folder is placed on the plant level, while a second folder vertically offset in the machine cellar or on Role changer level is. As a result, short Bahnüberführwege and a unrestricted access to the folders achieved. If this case a folding structure and a fold superstructure on the machine table, i.e., at the plant level, set up be, results in a low height.

It can also be arranged another folder on reel changer level.

In all the above embodiments can for several folders with Advantage be provided only a structure and a superstructure.

In a further, advantageous with the aforementioned embodiments combinable embodiment of the invention, the folder itself is movable. If the folding structure and the superstructure are placed on a yoke, then a back-up Folder, if provided, instead of the folder if required Hauptfalzapparats be inserted. This will, depending on which Shifting method is used, no extra space needed in the plant. If the machine table itself is used as a yoke construction, and the Folders placed in the basement, so this is still a small height achieved.

It can also basically the Falzaufbau and the rebate superstructure on a Jochkonstruktion be arranged movable.

Particularly advantageous is the invention with the in EP 0 644 048 A2 combined drive and control concept.

This document teaches in particular that a pair of a pressure and a Counterpressure cylinder of a printing unit mechanically independent of other pairs of printing and impression cylinders of the same printing unit and a printing cylinder each of its impression cylinder or its counter-pressure cylinders mechanically should be driven independently.

In a preferred embodiment drives a drive motor via a mechanical Coupling, preferably a motor-side pinion and a cylinder-side spur gear, on the jaw cylinder. This allows high transmission ratios in one stage and be realized in a space-saving manner. By eliminating a longitudinal shaft gear box and all drive components, such as shafts and gears, including idler, results in a cost reduction. Because of his comparatively large inertia and small operating moments is in this Variant of the drive in a particularly quiet location of the folder coupled. The web tension on the collecting cylinder, the friction moments of the cylinder bearings, the tension rollers in the folder and the cutting stroke cause a moment that the driving motor counteracts. This can be prevented by the Control of the drive motor, an edge change in the drive from the motor-side pinion to the cylinder-side spur gear and between the cylinder spur gears of the cylinder Folder takes place. Another advantage is that by the arrangement the drive on the jaw cylinder and the always equilateral tooth contact Change between driving and braking engine operation is prevented and the Engine only running in the driving area. Such a change of operation would otherwise easily lead to damage in the drive of the folder. When occurring pulse-shaped operating torques that cause disruptive edge changes in the drive lead, it is sufficient, by an additional moment on the jaw cylinder the tooth contact especially between the pinion and the spur gear always on the to keep the same place. Such a moment is relative to the drive torque comparatively small and can for example by an electric brake or a Friction brake are introduced.

In a likewise preferred embodiment, the motor-side pinion meshes with one arranged after the knife cylinder, any other gear in Drive train of the cylinders of the folder.

Another variant is to arrange the drive motor where after the Prior art, the longitudinal shaft gearbox sits.

In a further preferred embodiment, the drive motor drives via a Timing belt on the knife cylinder. Here, the mass of the knife cylinder for low net mass of the drive motor are added, causing the control dynamics can be improved. This can also be a translation between Drive motor and knife cylinder can be provided in more than one stage.

Further preferred is the drive from the engine via a toothed belt on the Collecting cylinder. Again, the mass of the collecting cylinder, which is larger than the of the knife cylinder is added to the low net mass of the drive motor which, as already mentioned, improves the control dynamics. Again, one can Multi-stage transmission between drive motor and collector cylinder may be preferred.

Finally, on such a timing belt on the jaw cylinder to be driven.

In another preferred embodiment of the invention drives the drive motor via a toothed belt on any gear in the entire drive train between the knife cylinder and display, for example, a paddle wheel. Here can the drive also on an operatively connected to the drive train Intermediate wheel done. The required gear ratio of the drive motor on the gear is advantageously one-stage, so that in turn a space-saving Solution is created.

Fig. 2

einen einzeln angetriebenen Falzapparat,

Fig. 3

eine erste Stellvariante für zwei Falzapparate, wobei ein Falzapparat in einem Maschinenkeller angeordnet ist,

Fig. 4

die Stellvariante von Fig. 3 in detaillierterer Darstellung,

Fig. 5

eine zweite nicht erfiridungsgemäße Stellvariante, bei der mehrere Falzapparate nebeneinander im Maschinenkeller angeordnet sind und

Fig. 6

eine dritte Stellvariante für mehrere Falzapparate, die je zu einer Seite links und rechts eines Druckwerks angeordnet sind.

Hereinafter, preferred embodiments of the invention will be described with reference to figures. Show it:

Fig. 2

a single driven folder,

Fig. 3

a first setting variant for two folders, wherein a folding apparatus is arranged in a machine cellar,

Fig. 4

the variant of FIG. 3 in more detail,

Fig. 5

a second not erfiridungsgemäße adjusting variant, in which a plurality of folders are arranged side by side in the machine cell and

Fig. 6

a third variant for several folders, which are each arranged to one side to the left and right of a printing unit.

In Fig. 2 runs a Bedruckbahn B by a Kappvorrichtung 20, a behind arranged Zugwalzenpaar 21, via a collecting cylinder 3 with associated Knife cylinder 2, is cut across there and then from the collecting cylinder 3 on the jaw cylinder 4 and from there to a serving as a means of delivery Paddle wheel 5 pass. Instead of the paddle wheel 5 can also be an endless between two rollers revolving means of transport with grippers for the folded printed copies be provided.

In the illustrated embodiment, the jaw cylinder 4 by a Drive motor 10 directly driven. The mechanical coupling between the Drive motor 10 and the jaw cylinder 4 is via a motor-side pinion 10.1 and a cylinder-side spur gear 4.1 formed.

In Fig. 3, a printing machine is shown, which is an example of the gain Flexibility with regard to the installation options of the self-propelled folder is. In this embodiment, a folder F1 in the machine cellar on the same level as reelstands R1, R2, R3 and R4 set up while Printing units D1, D2 and D3 on an overlying plant level 100 in one Escape in a row. About the folder F1 is a folding structure or Folding superstructure 30 having at least one funnel on one or more levels has, arranged and stored on the folder. The rebate components 30, 40 are arranged between the two printing units D2 and D3, so that the Bedruckbahnen come in from two sides.

In addition to this first folder F1, a second folder is provided. This second folding apparatus is at the plant level 100, preferably approximately aligned with arranged lower fold superstructure 30.

The Bedruckbahnen can optionally be fed to one of the folders. In the example of Fig. 3 is only in the machine cellar folder F1 in Business. If two folders are provided, some of them may be behind the printing units further promoted Bedruckbahnen the folding structure, as dashed example shown, are supplied. From the upper hopper of the folding structure 30 reach the longitudinally folded Bedruckbahnen then to the second folder, while the im bottom hopper of the folder assembly 30 folded Bedruckbahnen continue the first Folder F1 be conveyed.

Fig. 4 shows the installation of said second folding apparatus F2 on the Plant level 100. The first folder F1 is again in the machine cellar, on the same level with the role change not shown, placed during the second folder F2 next to the machine to interpret a machine side is arranged. The fold superstructure 30 and 40 with two vertically stacked arranged double hoppers T is mounted in a yoke J. The yoke J is shown in FIG. 4 in turn on the plant level 100 or the machine table above the first Folder F1 and stored independently thereof. Between the first folder F1 and its part 30 of the rebate is his part of the folding structure with deflection and Pull rollers recorded in the same yoke J The corresponding folding construction part for the second folder F2 is located between the yoke J and the second Folder F2. In the upper part of the yoke J, the rebate component 40 is for this second folder F2 added.

Both the storage and the drive of the folding superstructure 30 takes place in the example according to Figure 4 mechanically independent of the drive and the storage of Folders. The same applies to their folding structure.

Fig. 5 shows two not according to the invention side by side on a plane - on the machine table not according to the invention or in the machine cellar - arranged folders F1, F2. Only the first folder F1 is in operation, while the second Folder serves as back-up.

The feeding of Bedruckbahn or webs to the folder F1 is done again via a folding structure 30 mounted on a yoke J. The yoke J is independent of stored the folders F1 and F2, whereby an exchange of the first folding apparatus F1 against the back-up folder F2 is enabled. Especially easy the replacement of the folder F1 against the back-up folder F2, when the two folders are movable (F1 □ F1 'or F2 □ F2').

In Fig. 6 is another, the flexibility in the configurability of the printing press demonstrative example shown. The printing press has six Druckwerke D1 to D6 on, of which each seen three printing units in the web conveying direction arranged one behind the other and placed two such rows of three next to each other are. Left and right of the last printing unit D1 or D4 of the two Printer series of three folders are F1, F2 and F3 placed such that a the folding apparatus, F2, between the two last printing units D1 and D4 is arranged so that Bedruckbahnen of these two printing units to the center set up, in this case common folding apparatus F2 can be fed. The two other folders F1, F2 and F3 are among the still free outsides of each of the Printing units D1 and D4 arranged.

Above each of the folders F1, F2 and F3 is an associated one Folding structure 30 with a former or formers, while above the two next the folding units F1 and F3 last printing units D1 and D4 the required Deflection rollers and turning bars for feeding the printing webs are arranged. The delivery of the folded printed copies can be uniform in Machine longitudinal direction. But it can also, which in turn gives the flexibility the solution according to the invention demonstrated, in the case of the two outer folders F1 and F3 to the sides.

Claims (10)

1. A rotary printing press with at least two folders (F1, F2, F3) which comprise at least one cutting cylinder (2) and one folding-jaw cylinder (4) and one of which is driven in a mechanically independent manner - at least independent of printing units (D1 to D6) of the printing press - by at least one separate drive motor (10) and can be set up and registered independently of the printing units, characterised in that a first folder (F2) is arranged in the plane of the plant (100), and in that a second folder (F1) is arranged on a reel-changer plane below the plane of the plant, vertically offset with respect to the first folder (F2).
2. A rotary printing press according to claim 1, characterized in that a further folder is arranged in the reel-changer plane.
3. A rotary printing press according to one of the claims 1 or 2, characterized in that the press comprises a further folder, and at least one of the folders (F1, F2, F3) is movable.
4. A rotary printing press according to one of the preceding claims, characterized in that a folding structure (30) is driven mechanically independently of the folder (F1, F2, F3).
5. A rotary printing press according to the preceding claim, characterized in that the folding structure (30) is driven mechanically independently of the printing units (D1 to D6).
6. A rotary printing press according to one of the preceding claims, characterized in that a folding structure (30) is mounted independently of its associated folder (F1, F2).
7. A rotary printing press according to the preceding claim, characterized in that the folding structure (30) is mounted in the plane of the press or raised on a yoke (J).
8. A rotary printing press according to one of the preceding claims, characterized in that the press comprises a further folder and a folding structure (30) is provided for more than one folder (F1, F2, F3).
9. A rotary printing press according to one of the preceding claims, characterized in that a pair of cylinders - comprising an impression cylinder and a counter-impression cylinder - of a printing unit (D1 to D6) are driven in a manner mechanically independent of other pairs of impression cylinders and counter-impression cylinders of the same printing unit (D1 to D6).
10. A rotary printing press according to the preceding claim, characterized in that an impression cylinder is driven in a manner mechanically independent of its counter-impression cylinder or cylinders in each case.

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