EP1074500A1 - 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 is equipped with 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 drives around its axis is. The transfer cylinder works together with a jaw cylinder, the on its circumference has jaws, while the transfer cylinder with a interrupted peripheral surface is equipped with puncture sets as well as Folding knives intended for this purpose, the copies separated from the material web to push transversely into jaws. Beyond that on the transfer cylinder Means provided with which a relative adjustment between punctures and Folding knives can be made. Are on the circumference of the transfer cylinder strikers on both sides of folding knives and puncture sets on both sides as well Strike plates added. Both strikers can be relative like a backdrop are moved towards each other, being a practically uninterrupted continuous form the outer surface of the cylinder, regardless of the respective angular position of folding knives and puncture sets on the circumference 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 one inevitably one, albeit to a small extent, a stepped surface of the Cylinder was connected. This leads to different peripheral speeds copies of the circumference of such a cylinder.

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, an exactly achievable cylindricity of the peripheral surface of the copy-leading cylinder by the storage of the peripheral surface parts to one of the Guaranteed segments of the copy-leading cylinder. The peripheral surface parts 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 imprinted.

In an advantageous development of the idea on which the invention is based the peripheral surface parts about an axis on one of the segments of the example Swiveling cylinder. The movable peripheral surface parts are preferably on stationary segment stored, while the corresponding to the peripheral surface parts Choice of folding mode 'leading guide elements in a preferred manner movable segment of the copy-leading cylinder are added.

In order for the circumferential surface parts to be as free of play as possible from their swiveling To allow storage around, the bearings of the peripheral surface parts are included a prestressing means imparting a torsional moment. The Peripheral surface parts themselves are provided with a follower element, which in Guide element is guided and depending on the folding mode change a retract or causes an extension movement of the peripheral surface part. The follower element can for example, rotatable as a roller or as a race on the peripheral surface part be trained. To ensure that the construction is as durable and precise as possible achieve, are the follower elements enclosing cages on the guide element trained, which are limited by two cam surfaces. These go to theirs respective upper or lower ends in an upper or lower recess on Guide element over. In the upper and lower recesses of the Guide element, the follower elements can be moved in the circumferential direction such that overlap adjustments between 1 and 5 mm occur on the copy to be folded let in without already during the adjustment operations of the overlap retracting peripheral surface part between the segments of the leading example 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 point 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 Lever of the toggle lever system can advantageously be designed as a stop, which 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 Falzmodus 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 fold mode delta fold and

Figure 4

such a copy-leading cylinder, the segments of which are positioned relative to one another 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 mutually cooperating acceleration belts 6 rotate 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 if the straps are not allowed to be elongated.

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 is different with delta fold or double parallel fold, is one 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 pointless folders for Management of the copies on the circumference 12 of the cylinder 9 necessary band pulls 6 to extend towards the gap to the folding jaw cylinder 17.

The 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 extends relative to the specimen. in the Fold mode double parallel fold, this length is longer (see FIG. 2). The one with the copy-leading cylinder 9 cooperating jaw cylinder 17 there also from a stationary and one not described here in detail relatively movable segment, which each receive a set of folding dappers 19 and rotate in the direction of rotation 18 as shown.

Between the jaws 19 of the stationary or the movable segment each a quarter of a copy length 26, the same applies to the second Cross-folding cylinder 20, which in the illustrated embodiment above the 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 17 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, the stationary segment 10 and the movable segment 11 of the copy-guiding cylinder 9 are further adjusted relative to one another, so that half a copy length lies between the copy grippers 13 and the folding knife 14 for the first transverse fold. Said half specimen length is designated in FIG. 2 by the reference number 25 and corresponds to a circumferential angle of ₂ 75.65 °. In a manner analogous to FIG. 1, the specimens are transported to the peripheral surface 12 of the specimen-leading cylinder 9, gripped there by grippers 13 and positioned by the folding knives 14 for half the specimen length 25 and in the gap between the specimen-leading cylinder 9 and the opposing jaw cylinder 17 pushed into correspondingly positioned folding dowels 19 of the folding jaw cylinder 17. The first transverse fold - be it a delta fold to 1/3 product length 16 as shown in FIG. 1 or the first double parallel fold as shown in FIG. 2 - is thus carried out on the folding jaw cylinder 17. By means of the folding blades 23 for the second transverse fold, which are received on the second transverse folding cylinder 20, either the second parallel fold, ie the double parallel fold, can be completed or the delta fold can be carried out on the copy.

Figure 3 shows a copy-leading 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 peripheral 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 into them stay retracted. The extended peripheral surface part 29 is on the axis A of the 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, 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 in the 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 - is a biasing element 37 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 presses. 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, according to 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 lying in front of it, which permits an adjustment of the overlap on the copy, as already described above. Between the middle of the bearing of the folding knife 14 for the first transverse fold and the middle 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 exemplar-carrying cylinder.

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 exemplarily 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-guiding 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 To allow adjustments to the fold. 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 according to the invention described above Cylinder 9 is both in conventional folders and in pointless working folders possible, both in newspaper printing and in Commercial applications. 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.

Reference list

1

Train path

2nd

Feed roller pair

3rd

Perforating roller pair

4th

Cutting cylinder

5

Groove cylinder

6

Acceleration conveyor belts

7

Rotating rollers

8th

Tensioning / relaxing device

9

exemplary cylinder

10th

stationary segment

11

movable segment

12th

Circumferential surface part, stationary

13

Gripper

14

Folding knife, first cross fold

15

Sense of rotation

16

Third length copy

17th

Jaw cylinder

18th

Sense of rotation

19th

Jaws

20th

second folding cylinder

21

Belt pull

22

Clamping device

23

Folding knife, second cross fold

24th

Sense of rotation

25th

half length copy

26

¼ length

27

¼ length

28

Gripper

29

movable peripheral surface part, extended

29 '

movable peripheral surface part, retracted

30th

Guide element

31

Tread

32

upper recess

33

lower recess

34

Follower element

35

Preload unit

36

Bearing block

37

Preloading element

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)

Specimen-leading cylinder of a folder, in different folding modes is operable, the copies on a pair of cutting cylinders (4, 5) of one Material web are separated and a copy-carrying cylinder (9) a peripheral surface (12) can be fed, in the gripping and Cross fold elements (13, 14) are included and the relative to each other contains positionable segments (10, 11), characterized in that movable peripheral surface parts (29) guided by a guide element (30) for folding mode changes in the peripheral surface (12) of the cylinder (9) extend or between stationary and movable segments (10, 11) of the Retract cylinder (9). Specimen-leading cylinder according to claim 1, characterized in that the peripheral surface parts (29) around an axis (A, A ') one of the Segments (10, 11) of the cylinder (9) are pivotable. Specimen-guiding cylinder according to claim 2, characterized in that the peripheral surface parts (29) around the axis (A, A ') of a stationary Segment (10) of the cylinder (9) are pivotable. Specimen-leading cylinder according to claim 1, characterized in that the guide elements (30) of the peripheral surface parts (29) with one of the Segments (10, 11) of the cylinder (9) are connected. Specimen-leading cylinder according to claim 4, characterized in that the guide elements (30) on the movable segment (11) of the cylinder (9) are included. Specimen-leading cylinder according to claim 1, characterized in that the peripheral surface parts (29) at their bearing point (A, A ') by a Preload unit (35) are subjected to torsion. Specimen-leading cylinder according to claim 1, characterized in that the peripheral surface parts (29) are provided with a follower element (34), which is guided in the guide element (30). Specimen-leading cylinder according to claim 7, characterized in that the follower element (34) is designed as a roller. Specimen-leading cylinder according to claim 1, characterized in that the guide element (30) is a cage delimited by two running surfaces (31) having. Specimen-leading cylinder according to claim 9, characterized in that the treads (31) in an upper and a lower recess (32, 33) on Pass over the guide element (30). Specimen-leading cylinder according to claim 1, characterized in that the movable peripheral surface parts (29) by means of a toggle lever system (39) are supported. Specimen-guiding cylinder according to claim 11, characterized in that a lever (41) of the toggle lever system (39) can be rotated in the stationary segment (10) is stored. Specimen-guiding cylinder according to claim 11, characterized in that between the upper and lower lever (40, 41) in the area of the knee (B) Stop (42) is formed. Specimen-guiding cylinder according to claim 11, characterized in that the toggle lever system (39) is acted upon by a prestressing element (37). Specimen-leading cylinder according to claim 1, characterized in that an overlap correction between the segments (10, 11) of the cylinder (9) enabling distance (43) is formed. Folder that can be operated in different folding modes, with one copy-leading cylinder, the copies on one Cutting cylinder pair (4, 5) are separated from a material web and one copy-guiding cylinders (9) with a peripheral surface (12) can be fed in the gripping and transverse folding elements (13, 14) are included and the relative contains segments (10, 11) that can be positioned relative to one another, characterized in that that guided by a guide element (30), movable Circumferential surface parts (29) for folding mode changes in the Extend peripheral surface (12) of the cylinder (9) or between stationary and Retract movable segments (10, 11) of the cylinder (9) holding the copy. Puncteless folder that can be operated in different folding modes, whereby the copies on a pair of cutting cylinders (4, 5) from a material web be separated and a copy-leading cylinder (9) with a Circumferential surface (12) can be fed, in which gripping and transverse folding elements (13, 14) are recorded and the segments (10, 11) that can be positioned relative to one another contains, characterized in that guided by a guide element (30), movable peripheral surface parts (29) in folding mode changes in the Extend peripheral surface (12) of the cylinder (9) or between stationary and Retract movable segments (10, 11) of the cylinder (9) holding the copy.

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