EP1190971B1 - Device for adjusting transport means for flat exemplars in a rotary printing machine - Google Patents

Abstract

The device for the adjusting of feed units for printing presses processing flat sheet copies has additional processing units in which are housed shafts (16) with stationary elements (25) guiding the individual feed belts and upon which are mounted constantly pretensioned elements (20) which are movable symmetrically in relation to the center of the machine and which drive and guide the individual feed belts. Independent claims are included for a paper processing machine, for folding apparatus, and for a rotary sheet-fed press, all with facilities for adjusting the feed units for flat sheet copies.

Description

The invention relates to a device for the lateral adjustment of conveyors for flat copies in rotary printing machines, such as in band trains for the item transport in web-processing rotations downstream folding units.

Conveyor belts in folders are off JP HEI7-8364 known. There are band trains in the folder, which is arranged downstream of a rotary printing machine, used at the second Längsfalzeinrichtung for flat copies. By means of a folding blade which can be moved up and down in the vertical direction, printed copies to be provided with a second longitudinal fold are introduced into the folding gap between two folding rollers below a conveyor table. For positioning above the Falzwalzenspaltes to be folded copies of bands trains are gripped on both sides and led to positioning stops before a collision of the respective back parts of the folded copies takes place in the gap of the folding rollers.

EP 0 553 739 B1 refers to a device for adjusting sheet guiding elements in rotary printing machines. It is a device for adjusting transversely to the sheet travel direction with a drive movable, consisting of carriers and pressure elements bow retainers disclosed which are mounted on a rotatable shaft and are arranged with helically arranged on the shaft opposing grooves in engagement. It is provided a longitudinally slotted frame-fixed hollow carrier, on which its circumference comprehensive rings are arranged displaceably. These each carry a sheet hold-down, the rings form an anti-rotation with the hollow beam. The rings each have a directed into the interior of the hollow carrier guide pin. In the interior of the hollow support a rotatably mounted at their ends shaft is arranged, which has at least two helical grooves of different pitches on their first half length, which are arranged in mirror image to at least two helical grooves on a second half length of the shaft. Each groove is assigned a ring, which has a in the nutkraft- and positively engaging annular fixed guide pin, wherein the increase of the grooves decreases towards the ends of the rotatable shafts in each case.

DE 33 03 331 A1 refers to a conveyor assembly for cyclically advancing loose paper layers. Pulleys of conveyor are mounted in a frame formed of two cheeks. The frames are mounted in a guide of a machine frame and lie on a traverse of the machine frame. The frames are laced to the guide by clamping means and can be moved by loosening these clamping means in the direction of the guide.

DE 195 45 349 A1 refers to a device for stiffening flat workpieces of paper or the like. The device comprises the workpieces undulating profiling facilities, which are designed as freely rotatably mounted discs or as freely rotatably mounted rollers on which belt revolve. Each of them engaging on the workpiece sections enforce their common center plane such that the workpieces are profiled in a wave-like manner in the horizontal direction. The profiling depth can be adjusted by a vertical displacement of the rollers or discs.

DD 40 612 A1 refers to a Bogeneinlauftsich for folding machines. By means of adjustable scissor holder arch support and sheet conveying means, which are coupled together via the scissor holder, are relatively moved.

It has been found that in band trains for transporting flat copies in folders on web-fed rotary printing presses an exact adjustment of the distance of the copies leading conveyor belts is of great importance for a damage-free product transfer.

In view of the known from the prior art solutions, the present invention seeks to provide an adjustment for copy conveyors in folders, which allows an adjustment of the position of the copy conveyor to the format of the folded copy. This object is solved by the features of claim 1.

The advantages associated with the solution according to the invention are mainly to be seen in the fact that now takes place simultaneously, simultaneous adjustment of all the individual bands of a band train leading, biasing and driving elements in the lateral direction. By the duration of the control of the lateral adjusting movement effecting drive different travels can be realized so that at a second Längsfalzeinrichtung within a downstream of a rotary printing machine folder the Bandzugbreite is adaptable to all common folding copy formats to be processed. Since it is ensured that all the individual bands of a band train supporting elements are moved by the same way with respect to the machine center, a strictly parallel position of all individual bands of a band train is guaranteed relative to each other. This significantly improves the folding accuracy, since now no forces acting perpendicular to the product conveying direction on the specimens to be folded occur more. The accuracy of the supply of the copies to be folded and their delay to stops before a downward movement of a folding blade within the second Längsfalzeinrichtung causes significantly higher product quality can be achieved.

The individual bands of a band train respectively leading, driving and holding under bias elements are indirectly or directly movable on shafts. Is there sufficient space within the folder, ie the second Längsfalzeinrichtung available, so the drive elements can be indirectly adjusted, for example via adjusting forks on their shafts, while according to an alternative embodiment, guide rollers for the individual bands of a band train directly to the receiving waves are movable.

In addition to the recording of the individual bands of a band train leading driving or constant bias holding elements in individual construction can be added to the side of the product conveying direction movable recording elements also pairs or groups of the individual bands leading driving or holding under constant bias elements. These can be mounted relatively movably on cylindrical or slide-shaped receiving bodies, wherein the cylindrical or slide-shaped receiving bodies can be moved directly or indirectly on the shafts supporting them.

According to the underlying idea of the invention, the cylindrical or slide-shaped receiving elements are provided for lateral adjustment with spindle drives having opposite threaded portions. Due to the pitch of the counter-rotating threaded sections, exact travel paths of the individual receiving elements, be they in the form of carriages or cylindrically configured, with respect to the machine center, can be achieved.

In the carriage-shaped receiving elements, in which the individual bands of the bands can be recorded under constant bias holding cylinder, can be penetrated by the threaded spindle sections of different pitch individually. On the cylindrical receiving elements indirectly driving spindle-shaped drive elements and the cylindrical elements enclosing adjusting forks can be added rotatably. In a further embodiment of the idea underlying the invention, the individual strips leading recording elements can be moved directly on opposite threaded portions of the control shaft itself. For this purpose, the actuating shaft may be provided symmetrically to the machine center with stationary, the individual bands leading elements and peg-shaped on both sides of its central region have tapered sections, which in turn can be provided with threaded portions of different pitch.

In this embodiment, the serving to guide the individual bands receiving elements are secured with a rotation in the further processing unit on the side walls to prevent an undesirable change in the lateral position of the individual bands of the conveyor belt to each other.

Each lying in relation to the stationary components elements for guiding, driving and to hold under constant bias elements are moved individually or in pairs laterally.

The inventively proposed device for adjusting conveyor elements for the transport of flat specimens can be used in sheet-fed rotary printing presses, be it conventional offset printing machines or digitally operated sheet-fed presses. It is of particular importance for folders in which single or multi-page printed folding copies are produced in web-processing rotations, which are provided in a second Längsfalzeinrichtung with a second longitudinal fold. Whose training accuracy is crucial for the product quality, wherein the longitudinally to be folded product prior to its Längsfalzvorgang, since prior to the collision of the Falzrücken in cooperating coats of a Falzwalzenpaares no relative movements may occur in the product bilaterally grasping bands.

Reference to a drawing, the invention is explained in more detail below.

Fig. 1

den generellen Aufbau eines Transportbänderzuges zum Transport flächiger Exemplare,

Fig. 2

eine in den Seitenwänden gelagerte Verstelleinrichtung für die die Einzelbänder eines Bänderzuges antreibenden Komponente,

Fig. 3

eine gruppenweise Stellzylinderanordnung für Einzelbänder eines Bänderzuges, dessen äußere Stellzylinder paarweise verschiebbar sind,

Fig. 4

verfahrbare Bänderführungswalzen, von denen jeweils außen angeordnete Führungswalzen relativ zu innenliegenden Führungswalzen verstellbar sind und

Fig. 5

einen Falzapparat mit nachgeordnetem zweiten Längsfalzmodul und Exemplarauslage.

It shows:

Fig. 1

the general structure of a conveyor belt hoist for transporting flat specimens,

Fig. 2

an adjusting device mounted in the side walls for the component driving the individual belts of a belt train,

Fig. 3

a group-wise actuating cylinder arrangement for individual bands of a band tension, whose outer actuating cylinders are displaceable in pairs,

Fig. 4

movable belt guide rollers, of which each outer guide rollers are adjustable relative to the inner guide rollers and

Fig. 5

a folder with subordinate second Längsfalzmodul and copy delivery.

From the illustration according to Fig. 1 is the general structure of a conveyor belt for transporting flat specimens such as single or multi-page printed folded copies out in more detail.

The individual bands 5 of the bands 1 pull from the illustration according to Fig. 1 are driven by a designated by reference numeral 2 bands suit. The tape drive 2 may be a separate drive on a rotary printing press or on a folder; However, it can also be coupled into the gear train of these machines. The individual bands 5 of the strip 1 can be biased on a common clamping cylinder bearing rotatably held under individually adjustable bias clamping cylinder, so that a uniform bias level can be set on all individual bands 5 a band 1 and maintained during operation of the band 1 train. To maintain a strictly parallel leadership of the individual bands 5 with respect to each other and with respect to the machine center 13 (see Fig. 2 ) are driven by means of the belt drive 2 single belts 5 over a plurality of guide rollers 6 and 7 Anstellwalzen. By means of the guide rollers 6 ensures that the bands follow the individual circulation paths around the illustrated roller assembly; with the Anstellwalzen 7 can be a deflection of the individual bands and within certain limits realize their bias. The lateral webs of the individual roller segments received on the guide rollers 6 prevent the individual belts 5 of the belt train 1 from running out of the direction of rotation intended for this purpose.

From the illustration according to Fig. 2 is an in the side walls, for example, a folder mounted adjusting device for the individual bands of a further processing device such as a folder closer.

On a mounted in the side walls 8 of a further processing unit spindle 10 counter-rotating, but provided with the same thread pitch threaded portions 10.1 and 10.2 are formed. The spindle 10 is rotatably supported by spindle bearings 12 in the side walls 8 of the further processing unit 40 and is driven by a spindle drive 11 not shown here. The spindle drive 11 may consist in an integration of the drive wheel of the spindle 10 in the gear train of the relevant processing unit; However, it may also be provided a separate drive for the spindle 10.

On the with 10.1 or 10.2 symmetrically to the machine center 13 arranged spindle portions of the spindle 10 are according to the configuration Fig. 2 Adjusting forks 15 added. Depending on the drive of the spindle 10 is the adjusting forks 15 a different length, depending on the control of the drive, travel in the direction of the double arrow 23 aufprägbar.

Since the adjusting forks 15 enclose receiving elements 20, the movement of the adjusting forks 15 in the direction of the double arrow 23 will directly cause a movement of the cylindrical elements 20 on the shaft 16. The cylindrical receiving elements 20 can be moved in the direction of the double arrow 23 via a feather key connection 22, 26 on the journal formed on the shaft 16 on both sides of the machine center 13. Between adjusting forks 15 and the cylinder-shaped receiving elements 20 according to Fig. 2 Rolling 14 are connected so that the rotation of the axially movable receiving elements 20 is ensured with respect to the adjusting forks 15.

Between the two symmetrical to the machine center 13 on the shaft 16 received cylindrical receiving elements 20 is a portion of the shaft 16, which has a number of stationary, disc-shaped elements. The stationarily received, disk-shaped configured elements 25 are also arranged symmetrically with respect to the machine center 13 and, since driven by means of a shaft drive 18 not shown here, also a drive component of the individual bands 5 of the strip 1 trains.

Three individual bands 5 run around the receiving elements 20 in groups, it being understood that a higher or a lower number depending on the configuration of the lateral surface of the cylindrically configured receiving elements 20 may be possible.

Instead of the keyway connection 22, 26 shown here, the displacement range of the shaft 16, on which the receiving elements 20 in the direction of the double arrow 23 can be axially displaced are designed as a multi-wedge profile or the like, so that an exact axial guidance of the individual bands 5 of the band train 5 driving cylindrical receiving elements 20 is ensured and a secure transmission of the drive torque of the shaft drive 18th

From the illustration according to Fig. 3 is a groupwise actuating cylinder arrangement for band trains in more detail, the outer actuating cylinder are displaceable in pairs on slide-shaped elements.

The in Fig. 3 illustrated carriage support 28 is stationarily mounted in the side walls 8 of a further processing unit. At the carriage support 28 are centered, also symmetrical to the machine center 13 according to Fig. 2 Actuator cylinder 31 received stationary, at the extending out of the piston rod 30, the individual bands 5 of the band draw 1 biasing tape rolls are mounted. Parallel to the carriage support 28, a spindle-shaped drive element 10 is received in the side walls 8 in rolling bearings 17, 19. Analogous to in Fig. 2 illustrated variant, the spindle-shaped drive element 10 comprises two threaded portions 10.1 and 10.2 which are each configured in opposite directions to each other in the same pitch. The threaded portions 10.1 and 10.2 of the spindle drive 10 pass through slide-shaped elements 27, on which in turn the individual bands 5 of the band tension 1 biasing clamping cylinder are added. Depending on the design of the control of the spindle-shaped drive element 10 via the provided on the drive side 9 drive it is a single drive or a drive via integration in the gear train of the further processing unit, the carriage-shaped elements 27 and thus the actuating cylinders recorded on it can impose different lateral travel paths.

From the illustration according to Fig. 4 go adjustable band guide rollers, each of which outer guide discs are movable relative to the inner guide discs.

The embodiment according to Fig. 4 shows a shaft 34 rotatably received in the side walls 8 in bearings 17 and 19 respectively. The shaft 34 includes a central portion, at its peripheral surface two in the embodiment according to Fig. 4 spaced stationary guide rings are added. The guide rings, be it stationary recorded guide rings 39 or movable guide rings 32, each include a running surface for the individual bands 5 of the bands 1 and the running surfaces circumferentially surrounding webs 33, which prevent the individual bands 5 of the bands 1 from running from their strictly parallel direction of rotation.

The adjusting shaft 34 off Fig. 4 is provided on both sides with threaded portions 10.1 and 10.2, on which identified by reference numeral 36 outer carrier segments are added. Both in relation to the axial displacement in relation to the actuating shaft 34 stationarily received guide rings 39 and received on the outer support segments 36 in the axial direction in pairs or individually movable guide rings 32 are rotatably received in the circumferential direction on the shaft 34 and on the outer support segments 36 , By a rotation of the actuating shaft 34, which can be made by introducing a rotational movement through a gear, the Trägersegmetne 36 can rotate on their provided with opposite threaded portions pin in the axial direction. For this purpose, the two outer carrier segments 36 are each provided with an anti-rotation device 38, which is indicated only schematically here. On the control shaft 34 are marked with reference numerals 35 stops which define a position of the guide rings 32, in which the individual bands 5 of the band 1 train can be moved together to minimum width with respect to the distance between the side walls 8. By this stop 35 of the identified by reference numeral 38 adjustment of the axially displaceable guide rings 32 in the direction of the machine center 13 is limited. A similar stop may be provided on the threaded portions of the control shaft 34 or on the anti-rotation elements 38.

Will the according to Fig. 2 . 3 and 4 shown drive elements for the individual bands 5 of a strip tension or a constant bias of the individual bands 5 inducing clamping elements and the axial and parallel guidance of the individual bands 5 driving shafts or spindles controlled synchronously, so can be within a second Längsfalzeinrichtung a conventional folder or a pin puncture working folding apparatus with respect to the machine center 13 of these machines, a simultaneous divergence or collapse of the individual bands 5 of the band trains 1 reach. The mutually taking place while maintaining the parallelism of the individual bands 5 lateral displacement ensures that the second Längsfalzeinrichtung supplied one or both sides printed folded copies supported according to their format, impinge on stops and under exact right-angle orientation with respect to them in the Falzwalzenspalt colliding folding blade to the Stops are positioned.

Fig. 5 shows a folder with downstream second Längsfalzmodul and provided at this provided by 90 ° to each other staggered copy delivery.

Reference numeral 41 designates the material web entering a first longitudinal folding device 42 above a cylindrical part of a folding apparatus 40. The single or multi-layered one- or multi-sided printed material web 41 leaves the first longitudinal folding device 42 provided with a first longitudinal fold below the funnel rollers 44 before it enters the cylinder part of a folding apparatus 40. After passage of a recorded between two Zugwalzenpaaren 46 Perforierwalzenpaares 47 individual printed copies are separated from the continuous web through the cutting cylinder pair. These run through a band train, taken on both sides, on the peripheral surface of a transfer cylinder 48. From this, the individual successively promoted folding copies go over to the peripheral surface of a folding cylinder 49. This is a facultative acted double parallel / delta folding cylinder assigned to which optionally a double parallel fold or a delta fold can be completed at the single folded copy.

The folding cylinder 49 is associated with a second Längsfalzeinheit 43, which comprises a strictly vertically movable up and down folding blade 50, which engages the transversely folded copies, whether single or double parallel or delta-folded products in a gap, which through the lateral surfaces two oppositely rotating folding rollers is formed. After the formation of the Falzrückens reach the thus provided with a second Längsfalz printed copies in Auslageschaufelräder on a delivery belt 42 or optionally on another delivery belt. According to the proposed invention can be the carriage support 28 at the in Fig. 5 accommodate designated point of the second Längsfalzmoduls 43, wherein in the position indicated by the reference numeral 10, 16, the shaft 16 and the drive spindle 10 as shown Fig. 2 can be included. The band 1, which comprises a number of individual bands 5, encloses in the illustration according to Fig. 5 the folding blade 50 moving up and down as well as the paddle wheel underneath and the copy delivery 52 assigned to it.

The invention can be used in a particularly advantageous manner on sheet-processing machines such as sheet-fed rotary printing machines, Planoauslegern and the like. Furthermore, the use of folders is provided, be it conventional with puncture needles the products gripping folders or pinless folding machines that can be subordinate to web-processing web-fed rotary presses such as newspaper presses or commercial web presses.

LIST OF REFERENCE NUMBERS

1

Bänderzug

2

Bänderzugantrieb

3

clamping cylinder

4

Clamping cylinder storage

5

Single band

6

guide roller

7

Anstellwalze

8th

Side wall

9

driving side

10

drive spindle

10.1

first threaded section

10.2

second threaded section

11

spindle drive

12

spindle bearings

13

center line

14

camp

15

adjusting fork

16

wave

17

roller bearing

18

shaft drive

19

roller bearing

20

Adjustable receiving element

21

neck

22

Adjusting spring

23

displacement direction

24

shaft collar

25

Stationary disks

26

groove

27

carriage

28

slider support

29

Actuating cylinder storage

30

piston rod

31

Stationary cylinder

32

guide rings

33

web

34

actuating shaft

35

stop surface

36

Outer support segment

37

Stop guide groove

38

displacement

39

Stationary guide ring

40

folding

41

web

42

First longitudinal folding device

43

Second longitudinal folding device

44

forming rollers

45

perforating

46

pair of drawing rollers

47

Pair of cutting cylinders

48

transfer cylinder

49

folding cylinder

50

Double-parallel-delta folding cylinders

51

folding blade

52

copy delivery

Claims (8)

1. Device for the adjustment of conveying devices for further processing units (40) processing flat copies, in which, for the conveying of the flat copies, a plurality of belt trains (1) containing individual belts (5) are incorporated, which are guided over guide rollers (6) and adjustment rollers (7), driven by means of a drive (2) and with tension kept constant in the individual belts (5) by means of tensioning devices (3, 30, 31), characterised in that, in the further processing unit (40), shafts (16, 28, 34) are incorporated, with stationary elements (25, 39) guiding the individual belts (5), on which are mounted take-up elements (20, 36) movable symmetrically to the middle of the machine (13) and transverse to the direction of conveying of the copies, guiding and driving the individual belts (5), as well as tensioning devices (30, 31) keeping the individual belts (5) under constant preliminary tension, which are capable of being moved individually or as a plurality of units with cylindrical or carriage-shaped take-up bodies (20, 27, 34), wherein the cylindrical or carriage-shaped take-up bodies (20, 27, 34) are provided with drive units applying force for lateral adjustment as spindles (10) with threaded sections (10.1, 10.2) running counter to one another, and the outer individual belts (5) of the belt trains (1) are capable in each case of being moved individually or in pairs in a lateral direction (23, 28) and which move, indirectly or directly, the take-up elements (20, 36) guiding and driving the individual belts (5), and the tensioning devices (30, 31) which keep these under constant preliminary tension, on the shafts (16, 28, 34).
2. Device according to Claim 1, characterised in that the carriage-shaped take-up elements (27) are passed through by the threaded spindle (10).
3. Device according to Claim 1, characterised in that placement forks (15) are accommodated on the spindle indirectly driving the cylinder-shaped take-up elements (20).
4. Device according to Claim 1, characterised in that the take-up elements (36) guiding the individual belts are capable of being moved directly on counterrunning threaded sections (10.1, 10.2) of the placement shaft (24).
5. Device according to Claim 5, characterised in that the take-up elements (36) serving to guide the individual belts (5) are mounted in a torsionally-resistant manner in the side wall (8) of the further processing unit (40).
6. Folding machine with at least one device for the adjustment of conveying devices for flat copies, according to one or more of Claims 1 to 5.
7. Pinless folding machine with at least one device for the adjustment of conveying devices for flat copies, according to one or more of Claims 1 to 5.
8. Web-processing rotary press with further processing units (40) which comprise at least one device for the adjustment of conveying devices for flat copies, according to one or more of Claims 1 to 5.

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