EP1074500B1 - Printed products transport cylinder of a folding apparatus - Google Patents

Abstract

The sample-feeding cylinder (9) of a folding apparatus beyond a web-processing rotary printing machine involves the folding apparatus operable in different folding modes. The samples are separated from the web on a cutting cylinder pair (4,5) and fed to a guide cylinder (9) with a peripheral surface (12), in which are accommodated grip and folding components (13,14). The cylinder contains segments (10,11) positionable relatively to one another. Peripheral surface parts on folding mode changes move outwards in the peripheral surface of the cylinder or inwards between stationary and movable segments of the cylinder.

Description

The invention relates to an exemplary cylinder of a folder, which can be operated in different folding modes and a rotary printing press is subordinate.

From the prior art, DE 44 26 987 C2 is a folder with format change known. The folder has at least two, one cutting cylinder downstream folding cylinders equipped, at least one of which is at least two nested on a shaft and nested while at a standstill or the operation by means of a planetary gear adjustable relative to each other Has cylinder body. The first cylinder body works with a cutting cylinder together while the second cylinder body with the at least one Cylinder body of the second folding cylinder cooperates, the second Cylinder body together with the at least one cylinder body of the second Folding cylinder is adjustable together.

The first cylinder body and the second cylinder body of the first folding cylinder are via a first planetary gear and a second planetary gear connected, with which a wave is common. The planet gears of the first Planetary gear are rotatably arranged on a driven gear, which drives the first cylinder body. The planet wheels drive the two Planet-driven common sun gear. The sun gear drives via planet gears of the second planetary gear to the second cylinder body, the two Planetary gears have a ratio of 1: 1 in connection with each other.

The proposed solution is associated with high mechanical complexity.

FR 2 697 205 relates to a folder for processing continuous printed material webs.

The folder according to FR 2 697 205 is equipped with a cutting device which works with a transfer cylinder that is driven around its axis. The Transfer cylinder works with a jaw cylinder, which is on its circumference Has jaws while the transfer cylinder with an interrupted Circumferential surface is equipped with puncture sets as well as with folding knives are determined, the specimens separated from the material web across in flaps einzustoßen. In addition, facilities are provided on the transfer cylinder with which make a relative adjustment between punctures and folding knives can. On the circumference of the transfer cylinder there are locking plates on both sides of folding knives and locking plates also included on both sides of the puncture sets. Both Locking plates can be moved relative to one another in the manner of a backdrop, being a form practically uninterrupted continuous outer surface of the cylinder, regardless of the respective angular position of folding knives and puncture sets on Extent to each other.

A disadvantage of this solution is the fact that the curvature of the closing plates was difficult to manufacture and with the backdrop-like guidance of the locking plates inevitably one, albeit to a small extent, a stepped surface of the Cylinder was connected. This leads to different peripheral speeds of the Copies on the circumference of such a cylinder.

EP 0 386 531 relates to a folder. In a folder with at least two with interacting folding elements in the form of folding knives and folding jaws provided folding cylinder, in which products of very different thickness are produced a reliable method of production can be achieved that at least a folding cylinder has peripheral sections which are adjustable in the radial direction. On The circumferential area between successive folding members is in each case two Sections divided, of which the section trailing the adjacent folding member adjustable in the radial direction and the other section are fixed.

The invention lies in the further development of the solutions from the prior art Task based on an adjustable according to the folding modes driven product-carrying folding cylinder to maintain the cylindricity of the cylinder and a constant peripheral speed of the specimens guided on the circumference of the cylinder to reach.

According to the invention, this object is achieved by the features of patent claim 1.

The solution implemented in the invention has a number of advantages. On the one hand, the peripheral surface parts are automatically retracted and extended Folding mode changes thanks to the forced guidance of the peripheral surface parts. on the other hand is an exactly achievable cylindricity of the circumferential surface of the specimen leading Cylinder by the storage of the peripheral surface parts on one of the segments of the guaranteed leading cylinder. The peripheral surface parts those that are forced in or out during folding mode changes are in theirs Curvature of the cylinder jacket surface adapted so that on the jacket surface of the copies guided cylinders according to the invention guided copies none different speeds are impressed.

In an advantageous development of the idea on which the invention is based, the Circumferential surface parts around an axis on one of the segments of the exemplary Swiveling cylinder. The movable peripheral surface parts are preferably on stationary segment stored, while the the peripheral surface parts according to the choice of the folding mode guiding elements in a preferred manner on the movable Segment of the copy-leading cylinder are included.

In order for the circumferential surface parts to be pivoted as free of play as possible To allow storage around, the bearings of the peripheral surface parts with a provide a prestressing means imparting a torsional moment. The peripheral surface parts themselves are provided with a follower element, which is guided in the guide element and Depending on the folding mode change, a retracting or extending movement of the Partial surface effect. The follower element can, for example, as a roller or as Race on the peripheral surface part to be rotatable. To be as durable as possible and to achieve precise working construction are the key to the guide element Cages enclosing follower elements are formed by two cam surfaces are limited. These go into an upper at their respective upper and lower ends or lower recess on the guide element. In the upper or lower Recesses of the guide element are the follower elements in the circumferential direction movable that overlap adjustments between 1 and 5 mm at the to be folded Have a copy set without having to adjust the overlap already a retracting peripheral surface part between the segments of the copy-leading cylinder takes place.

The peripheral surface parts are advantageously by a toggle lever system supported. One of the levers of the toggle lever system is on the stationary segment of the copy-leading cylinder rotatably mounted. The toggle system is on his Knee joint - the connection between the upper and lower lever - by a Biasing element acts on, which avoids play and thus precise guidance of the mechanical components of the toggle lever system. On one of the levers of the toggle lever system can advantageously be designed as a stop precisely defines the extended position of the peripheral surface part and thus the Maintaining the exact cylindricity of the circumferential surface of the specimen leading Cylinder guaranteed with extended peripheral surface parts.

Clearances are provided between the segments of the specimen-guiding cylinder the - together with the upper or lower provided in the guide elements Recesses - an adjustment of the overlap both in the folding mode Allow double parallel fold as well as delta fold in fold mode.

The copy-leading cylinders can be used with both folders Puncture sets as well as in the case of folder-less folders are advantageous Use Wise.

The invention will be explained in more detail with reference to a drawing.

Figur 1

eine Falzapparatkonfiguration auf den Falzmodus Deltafalz eingestellt,

Figur 2

eine Falzapparatkonfiguration, die im Falzmodu Doppelparallelfalz betrieben wird,

Figur 3

einen falzexemplarführenden Zylinder im Falzmodus Deltafalz und

Figur 4

einen solchen exemplarführenden Zylinder, dessen Segmente im Falzmodus Doppelparallelfalz zueinander positioniert sind.

It shows:

Figure 1

a folder configuration is set to the delta fold mode,

Figure 2

a folder configuration that is operated in the double parallel fold mode,

Figure 3

a cylinder holding a copy copy in the Deltafold folding mode and

Figure 4

such a copy-leading cylinder, the segments of which are positioned in the double parallel fold mode.

In Figure 1, a folder configuration is shown in which a folder in Fold mode delta fold can be operated.

A multi-layer, printed and possibly provided with a first longitudinal fold Material web runs along its path 1 coming from above into a folder on. The material web enters through a first pair of feed rollers 2 Perforating gap between the two pleating or Perforating cylinders 3 lies. After perforation or pleating of the material web are in the cutting gap between a cutting cylinder 4 and a groove cylinder 5th Copies separated from the material web. These get into Acceleration conveyor belts 6 below the cutting gap and are by this transported to the circumferential surface 12 of the cylinder 9 leading the copy.

The cooperating acceleration belts 6 run around Circulating rollers 7 and are stretched over tensioning and relaxing devices 8 or relaxed, for example when changing the straps after longer ones Operating times or in the event of impermissible elongation of the belts.

The copy-leading cylinder 9 comprises a stationary segment 10 and a relative to this movable segment 11; on the stationary segment 10 are here, for example Gripper 13 added, while on the movable segment 11 folding knife 14 for the Execution of the first cross fold are included. Since this first cross fold on folding copy with delta fold or double parallel fold is different Depending on the selected folding mode, the position of the first must be adjusted Querfalzmessers 14 to the copy to be folded necessary. The leading example Cylinder 9 rotates in the direction of rotation 15, which in the case of puncteless folders Management of the copies on the circumference 12 of the cylinder 9 necessary band pulls 6 to extend towards the gap to the jaw cylinder 17.

Reference number 16 denotes the copy length that is in the folding mode Delta fold between the front edge of the specimen gripped by the grippers 13 and the position of the first cross fold knife 14 relative to the specimen. in the Fold mode double parallel fold, this length is longer (see FIG. 2). The one with the copy-guiding cylinder 9 cooperating jaw cylinder 17 there also from a stationary and one not described here in detail relatively movable segment, each receiving a set of jaws 19 and rotate in the direction of rotation 18 as shown.

Between the jaws 19 of the stationary or the movable segment a quarter of a copy length 26 each, the same applies to the second Cross-folding cylinder 20, which in the illustrated embodiment above the Folding jaw cylinder 17 is mounted. In addition to specimen grippers 28 are on the Circumferential surface of the second transverse folding cylinder 20 folding knife 23 for the second Transverse fold added to the copy, with gripper 28 and folding knife 23 on the The lateral surface of the second transverse folding cylinder 20 is also about a quarter Copy length 27 apart. The circumference of the second cross folding cylinder 20 is enclosed by a further band tension 21, the tensioning devices 22 are assigned, with the help of which in the jaws 19 of the jaw cylinder 17th copies seized on their fold back to the peripheral surface of the Jaw cylinder 17 are pressed.

Figure 2 shows the configuration of a folder in the folding mode Double parallel fold is operated.

In contrast to the configuration shown in FIG. 1, stationary segment 10 and movable segment 11 of the exemplary cylinder 9 further against each other adjusted so that between the specimen grippers 13 and the folding knife 14 for the the first cross fold is half a copy length. Said half copy length is in Figure 2 labeled with the reference numeral 25 and corresponds to a circumferential angle of 75.65 °. In a manner analogous to FIG. 1, the copies are sent to the Circumferential surface 12 of the copy-leading cylinder 9 transported from there Grasped 13 and half of the folding blades 14 for the first cross fold Copy length 25 positioned and in the gap between the copy leading Cylinder 9 and the opposite jaw cylinder 17 in corresponding positioned jaws 19 of the jaw cylinder 17 are pushed in. With that is on Jaw cylinder 17 the first cross fold - be it a delta fold to 1/3 product length 16, as shown in Figure 1 or the first double parallel fold as shown in Figure 2 - executed. By means of the folding blades 23 received on the second transverse folding cylinder 20 for the second cross fold, either the second parallel fold, i.e. the double parallel fold is completed or the delta fold is executed.

FIG. 3 shows a copy-guiding cylinder according to the invention in the folding mode Delta fold.

In this configuration, a peripheral surface part 29 is on a stationary segment 10 stored, shown in the extended position while another Circumferential surface part 29 'retracted into the interior of the cylinder 9 carrying the copy is. In the delta folding mode, the movable circumferential surface parts 29 are therefore the are assigned to the grippers 13, extended into the lateral surface 12 while those peripheral surface parts 29 ', which are assigned to the folding blades 14, in this stay retracted. The extended peripheral surface part 29 is on the axis A of stationary segment 10 added. There is a on axis A. Preload element 35, which the circumferential surface part 29 a torsional moment impresses. On the peripheral surface part 29 is a follower element 34 in the form of a roller or a race mounted which engages in a guide member 30 which on movable segment 11 of the copy-guiding cylinder 9 is mounted. This one Guide element 30 shown has a cage for the roller 34, which of two treads 31 is limited and the one in an upper and a lower Recess 32, 33 of the guide element 30 merges.

The recesses 32, 33 in the guide element 30 allow relative movements of stationary and movable segment 10, 11 to each other when the Circumferential surface parts 29, 29 'either completely in the retracted or completely in extended state. These relative movements may be necessary if the overlap to be adjusted on the copy must be adjusted. Through the Distances 43 between stationary and movable segment 10, 11 are movements possible in the circumferential direction from 1 to 10 mm, so that the fold length can be varied can.

The peripheral surface parts 29 are supported by a toggle lever system 39, which includes an upper lever 40 and a lower lever 41. The upper lever 40 takes the roller 34 rotating about the axis E; the lower lever 41 is about the axis D rotatably supported in the hub area of the specimen-guiding cylinder. In the knee joint - Axis B - a biasing element 37 is articulated, which game from the Toggle lever system 39 pushes out and the peripheral surface part 29 in its exact, the The cylindricity of the lateral surface is in accordance with its curvature suppressed. The biasing element 37 in turn is rotatable in an axis C in one Bearing bracket 36 added, with the hub of the exemplar-leading cylinder 9 can be connected.

While the peripheral surface part 29 is in its extended position, the peripheral surface part 29 'is shown in its retracted position. This is arranged downstream of the folding knife 14 for the first transverse fold and, in accordance with the contour shown in dashed lines, protrudes into the interior of the cylinder 9 carrying the copy. Its follower element 34 lies in the lower recess 33 of the guide element 30, the toggle lever system 39 is shown in its bent position, the peripheral surface part 29 'not required here is brought into its inactive position. A distance 43 is shown between the surface of the inactive peripheral surface part 29 'and the lateral surface part 12 of the stationary segment 10 in front of it, which permits an adjustment of the overlap on the copy, as already described above. Between the center of the bearing of the folding knife 14 for the first transverse fold and the center of the bearing of the gripper 13, the third product length 16 extends, which corresponds to α ₁ 56.44 ° of the circumference of the cylinder holding the copy.

Figure 4 shows the position of the components on an inventive copy-leading cylinder in the double parallel fold mode.

In this folding mode, that in FIG exemplary leading cylinder 9 extended peripheral surface part 29 shown inactive position 29 ', while in Figure 3 inside the example leading Cylinder 9 shown retracted peripheral surface portion 29 'in the outer surface 12 of the copy-leading cylinder 9 is retracted. The follower element 34 is added between the two running surfaces 31 of the guide element 30, is located in the latter lower recess 33, the upper recess 32 of the guide element 30 is empty. The two levers 40, 41 of the toggle lever system 39 are against the bias through the biasing element 37 from its extended position according to FIG broken position passed. The actuating rod 38 is therefore partly in that Preload element 37 retracted, which in turn rotatably on the bearing block 36 in Hub area of the copy-leading cylinder 9 is added. From the 4 shows that the follower elements 34 of the Circumferential surface parts 29, 29 'are both in the upper and in the lower Recess 32, 33 can still move in the circumferential direction by ± 1 to 10 mm Allow adjustments to the overlap. The recesses 32, 33 leave each Angular misalignments of up to 2 ° in the circumferential direction, which means an overlap misalignment of ± 1 to 10 mm on the specimen.

Use of the example-leading invention described above Cylinder 9 is both in conventional folders and in pointless working folders possible, both in newspaper printing and in Akzidenzapplikationen. Collection cylinder or jaw cylinder or others Leave copy-leading cylinders in folders such as grippers and transport cylinders adjust and operate in an analogous manner depending on the folding mode.

LIST OF REFERENCE NUMBERS

1

web path

2

Feed roller pair

3

Perforierwalzenpaar

4

cutting cylinder

5

grooved cylinder

6

Acceleration conveyor belts

7

revolving rollers

8th

Clamping / unclamping mechanism

9

exemplary cylinder

10

stationary segment

11

movable segment

12

Circumferential surface part, stationary

13

grab

14

Folding knife, first cross fold

15

rotation

16

Third length copy

17

jaw cylinder

18

rotation

19

jaws

20

second folding cylinder

21

Bänderzug

22

tensioning device

23

Folding knife, second cross fold

24

rotation

25

half length copy

26

¼ length

27

¼ length

28

grab

29

movable peripheral surface part, extended

29 '

movable peripheral surface part, retracted

30

guide element

31

tread

32

upper recess

33

lower recess

34

follower element

35

biasing unit

36

bearing block

37

biasing member

38

control rod

39

Toggle system

40

upper lever

41

lower lever

42

attack

43

distance

44

adjustable stop

A

axis

A '

axis

B

axis

C

axis

D

axis

e

axis

Claims (17)

1. Copy-guiding cylinder (9) of a folder that is operatable in different folding modes for suppliable copies that have been severed from a material web by a pair of cutting cylinders (4, 5), the copy-guiding cylinder (9) having a circumferential surface with stationary circumferential-surface parts (12) and including segments (10) positionable relative to each other with gripper elements (13) and including segments (11) with cross-folding elements (14),
   characterized in that for folding mode changes, movable circumferential-surface parts (29) that are each guided by a respective guide element (30) are extendable into the circumferential surface with stationary circumferential-surface parts (12) of the copy-guiding cylinder (9) and retractable between stationary and movable segments (10, 11) of the copy-guiding cylinder (9).
2. Copy-guiding cylinder according to claim 1,
   characterized in that the circumferential-surface parts (29) are pivotable about a pin (A, A') of one of the segments (10, 11) of the copy-guiding cylinder (9).
3. Copy-guiding cylinder according to claim 2,
   characterized in that the circumferential-surface parts (29) are pivotable about the pin (A, A') of a stationary segment (10) of the copy-guiding cylinder (9).
4. Copy-guiding cylinder according to claim 1,
   characterized in that the guide elements (30) of the circumferential-surface parts (29) are connected to one of the segments (10, 11) of the copy-guiding cylinder (9).
5. Copy-guiding cylinder according to claim 4,
   characterized in that the guide elements (30) are received on the movable segment (11) of the copy-guiding cylinder (9).
6. Copy-guiding cylinder according to claim 1,
   characterized in that the circumferential-surface parts (29) are subjected to torsion at their bearing point (A, A') by a pretensioning unit (35).
7. Copy-guiding cylinder according to claim 1,
   characterized in that the circumferential-surface parts (29) are provided with a follower element (34) that is guided in the guide element (30).
8. Copy-guiding cylinder according to claim 7,
   characterized in that the follower element (34) is formed as an idler roller.
9. Copy-guiding cylinder according to claim 1,
   characterized in that the guide element (30) has a cage bounded by two runner surfaces (31).
10. Copy-guiding cylinder according to claim 9,
    characterized in that the runner surfaces (31) merge into an upper and a lower cut-out (32, 33) formed in the guide element (30).
11. Copy-guiding cylinder according to claim 1,
    characterized in that the movable circumferential-surface parts (29) are supported by a toggle-lever system (39).
12. Copy-guiding cylinder according to claim 11,
    characterized in that a lever (41) of the toggle-lever system (39) is mounted rotatably in the stationary segment (10).
13. Copy-guiding cylinder according to claim 11,
    characterized in that a stop (42) is formed between the upper and the lower lever (40, 41) in the region of the toggle joint (B).
14. Copy-guiding cylinder according to claim 11,
    characterized in that the toggle-lever system (39) is acted upon a pretensioning element (37).
15. Copy-guiding cylinder according to claim 1,
    characterized in that a spacing (43) for allowing overfold corrections is formed between the segments (10, 11) of the cylinder (9).
16. Folder with a copy-guiding cylinder according to claim 1.
17. Folder with a copy-guiding cylinder according to claim 1,
    characterized in that the folder is a pinless folder.

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