EP0659670B1 - Flying tuck folding device for a rotary printing press - Google Patents

Description

The invention relates to a wheel folder for a Rotary printing machine according to the preamble of Claim 1.

Through the US-PS 30 38 719 is a wheel folder for Double and collective production with a 3/2 folding drum and an eccentrically rotating one in the folding drum Folding knife carrier and one against the folding drum cutting 2/2 cutting cylinder became known. The high cutting forces acting on the hollow folding drum can lead to fatigue fractures there. Disadvantageous here is also that at high speed Folding drum also has a high need for wearing parts consists. As a result of a large, on the folding drum centrifugal force acting on the signatures the paper guiding devices surrounding the cylinders pressed, which leads to smearing of the signatures can. Due to the braking effect of the signatures on the Paper guiding devices can use the punctures in the Signatures also cause cracking.

The invention has for its object a To create wheel folder, with which one Bulk production up to 192 pages is possible without that Damaging signatures.

The task is characterized by the characteristics of the Part of claim 1 solved.

The invention in particular the following Benefits achieved:

The fact that as a counter cutting and A solid cylinder is used for the puncture carrier the high cutting forces of the collecting and Cutting cylinder added without fatigue. As a result the large size and the relatively small Speed of the collecting and cutting cylinder Large centrifugal forces even in bulk production and thus smearing the signatures on the Paper guiding device avoided. For collective production are to facilitate the puncture of the on the Fold cylinders arranged point sets from one to the collecting and cutting cylinder arranged punctuation pre-cut. Before inserting the cross fold in the signatures already have the puncture needles withdrawn under the surface of the folding cylinder, the pressing function of the signatures on the fold, Puncture and counter-cutting cylinder from one Brush roller is taken over, so that damage to the Avoid ends of the signatures during the folding process. It newspapers or other printed products can hold up to 192 Pages are made.

Fig. 1

eine schematische Seitenansicht eines erfindungsgemäßen Räderfalzapparat,

Fig. 2

eine Einzelheit x nach Fig. 1,

Fig. 3

eine schematische Zuführung von Druckluft zur Veränderung des Umfanges des Sammel- und Schneidzylinders,

Der Räderfalzapparat nach der Erfindung besteht aus einem in einem Seitengestell 1 gelagerten 5/2 Sammel- und Schneidzylinder 2, welcher einen Umfang von fünf Abschnittslängen aufweist und als Hohlzylinder mit fünf Traversen ausgebildet ist. Auf diesen Traversen sind fünf bekannte Messerbalken 4, 5, 6, 7, 8 mit Schneidmessern sowie fünf in bekannter Weise gesteuerte, z. B. kurvengesteuerte Punktursätze 10, 11, 12, 13, 14 befestigt, die eine Mehrzahl von Punkturnadeln aufweisen. Am Umfang des Sammel- und Schneidzylinders 2 sind weiterhin, später noch näher zu beschreibende, Elemente zur Vergrößerung des Außendurchmessers angebracht. Die Punktursätze 10 bis 14 werden bei Sammelproduktion von feststehenden Kurven durch eine angetriebene Deckscheibe gesteuert. Diese Deckscheibe ist bei Doppelproduktion mit dem Seitengestell 1 über eine Kupplung verbunden. Die Kupplung ist mittels eines Arbeitszylinders, z. B. pneumatisch betätigbar.An embodiment of the invention is shown in the drawing and will be described in more detail below. Show it

Fig. 1

2 shows a schematic side view of a wheel folder according to the invention,

Fig. 2

a detail x according to Fig. 1,

Fig. 3

a schematic supply of compressed air for changing the circumference of the collecting and cutting cylinder,

The wheel folder according to the invention consists of a 5/2 collecting and cutting cylinder 2 mounted in a side frame 1, which has a circumference of five section lengths and is designed as a hollow cylinder with five cross members. On these traverses five known cutter bars 4, 5, 6, 7, 8 with cutting knives and five controlled in a known manner, for. B. curve-controlled point sets 10, 11, 12, 13, 14 attached, which have a plurality of pin needles. On the circumference of the collecting and cutting cylinder 2, elements for increasing the outer diameter are also attached, to be described later. The point sets 10 to 14 are controlled by a driven cover plate in the case of collective production of fixed curves. In the case of double production, this cover plate is connected to the side frame 1 via a coupling. The clutch is by means of a working cylinder, for. B. pneumatically operated.

The collecting and cutting cylinder 2 is on on the left side a 4/2 fold, puncture and Counter cutting cylinder 16 with a circumference assigned by four section lengths. The folding, Puncture and counter cutting cylinder 16 consists of two mutually rotatable supports, one Folding knife carrier 21 and a counter cutting bar and Puncture carrier 26. The folding knife carrier 21 has four known, offset by 90 ° on the cylinder circumference Point sets 17, 18, 19, 20 on. The two carriers are massive, as is the case in US Pat. No. 4,279,410 Fig. 4 is shown.

The diametrically opposite point sets 17, 19 and 18, 20 are each with a separate Control curve in connection. The control curve for the Point sets 18, 20 can be with a disc Covering the takeover points. This Cover plate is with a working cylinder Position feedback twisted when changing production from collective to double production or vice versa. The clockwise rotating fold, puncture and Counter cutting cylinder 16 points to his Folding knife carrier 21, seen in the direction of rotation, after the point rates 17 to 20 and each of these adjacent, one counter-cutting bar 22, 23, 24 25, which with one of the cutter bars 4 to 8 of the Collecting and cutting cylinder 2 cooperates.

In the counter cutter bar and puncture support 26 of the folding, puncture and counter-cutting bar cylinder 16 are four driven rotating folding knives 27, 28, 29, 30 mounted, which with one revolution of the folding, Puncture and counter cutting bar cylinders 16 each make three turns around its axis of rotation.

An adjustment of the folding knife carrier 21 and of the counter cutting edge and puncture support 26 to each other takes place via a differential gear 32. For this purpose, the folding knife carrier 21 has a continuous one Shaft with gear and the second hollow cylinder a hollow shaft with the gear on. For the purpose of adjusting the folding time, this is Differential gear 32 driven by a motor 33. The differential gear 32 rotates the Folding knife carrier 21 with the point sets 17 to 20 and the adjacent counter cutting strips 22 to 25 to the Mating cutter and puncture carrier 26 with the Folding knives 27 to 30 on the gears mentioned. The distance between the folding knives 27 to 30 and the point sets 17 up to 20 enlarged or reduced. Below of the folding, puncture and counter-cutting bar cylinder 16 are two interacting, spaced from each other adjustable driven spaced folding rollers 36, in cooperation with the folding blades 27 up to 30 fold the signatures. Below this Folding rollers 36, 37 have a paddle wheel 38 Compartments mounted on the side frame, from which the folded products by means of a continuous endless Scraper chain 39 deposited on a boom 41 become. Before the entry of a paper web strand 42 in the collecting and cutting cylinder 2 and the Folding, puncture and counter-cutting bar cylinders 16 is one consisting of two pull rollers 43, 44 Draw roller group arranged fixed to the side frame. Of the Collection and cutting cylinder 2 can also be used as 7/2-cylinder with seven fields, or seven Puncture and cutting systems. The folding, Puncture and counter cutting cylinder 16 can also as a 6/2 cylinder, i.e. H. with six folding, Puncture and groove systems are designed.

The representations in FIGS. 2 and 3 show the controlled point sets 10 and the cutter bar 4 in conjunction with means to enlarge the Scope of the collecting and cutting cylinder 2. On one Scope 46 of the collecting and cutting cylinder 2 are a plurality in each case between two pin needles 47 adjacent arcuate support bracket 48 arranged. The support brackets 48 are in a groove 49 out, the groove 49 is so deep that each the bracket 48 under the circumference 46 of the Collection and cutting cylinder 2 can withdraw. On a groove bottom 51 of the groove 49 are at a distance from each other towards the cylinder center per support bracket 48 two open bushings 52 welded. In every box 52, a compression spring 53 is arranged, the abutment on the inner sleeve base 54 and their application of force a head 56 of a screw 57 with a shaft. The Screw 57 leads from the groove base 51 of the groove 49 through the sleeve bottom 54 and is in the bracket 48 screwed in. In a space 58 between the bottom of the bracket 48 and the bottom of the groove 51 is a closed room 59 with changeable Volume by a circular, at both ends closed, e.g. B. formed plastic tube. Of the Hose is at a point between the two Bushes 52 coming to lie, with a connector 61st Mistake. The connector 61 is a pipe or Hose 62 connected to a compressed air reservoir 63. The compressed air reservoir 63 can both inside and arranged outside the collecting and cutting cylinder 2 be. A pipe or leads from the compressed air reservoir 63 Hose 64 to a blind hole 66 along the Center of a shaft 67 of the collecting and cutting cylinder 2. A shaft end 68 of the shaft 67 is with a Provide rotor connection 69. Via the rotor connection 69 is the blind hole 66 via a tube 71 and a pressure control valve 72 to a source of compressed air 73 connected. Between pressure control valve 72 and Shaft end 68 is on the feed line or the pipe 71 a pressure gauge 74 is connected.

Between the rotor connection 69 and the manometer 74, the Tube 71 an external compressed air reservoir 76 connected become.

Are the hoses not or only with slight pressure pressurized, they press through the compression springs 53 acted upon bracket 48 together. By the Applying z. B. Compressed air becomes the hoses inflated and the support bracket 48 corresponding to the set pressure raised. Via the pressure control valve 72 the pressure can be set within narrow tolerances become.

Now is the paper pull between z. B. last driven pull roller pair 43, 44 and the Collection and cutting cylinder 2 larger than that over the Pressure control valve 72 corresponds to the set train, so presses the paper web 42 on the support bracket 48, whereby the hoses are compressed and the Air pressure in the hoses, the supply line 62, 64, 66, 69, 71 and the compressed air reservoirs 63, 66 increased. If the internal pressure now exceeds the set one Pressure, the pressure control valve 72 blows until the set air pressure is reached. Because now Support bracket 48 kept at a lower radius the tension on the paper web is also reduced between pin needles 47 and the last pair of draw rollers 43, 44.

Of course, instead of the hoses, others can machine elements movable under pressure, such as B. Membrane cylinders or air pistons can be provided.

This arrangement of the adjustable support bracket 48 to change the scope of the collection and Cutting cylinder 2 is of course also on the folding knife carrier 21 of the folding, puncture and Counter-cutting bar cylinder 16 can be used, so that almost a constant tension in the paper web strand 42 is achieved, regardless of a variable thickness the same.

The folding rollers 36, 37 are spaced apart from one another adjustable by means of a gear motor 77. Here have the folding rollers 36, 37 on their circumference in each case Teeth that move so synchronously against each other, as if they were combing together, but in one Distance from a tooth height as well as additionally maximum one product thickness. This arrangement has the Advantage that an impression of the color in the folded product and smearing the paint on the outer sides not happened. Along with the setting of the Folding roller nip is done by the same drive an adjustment of the height of the boom 41 according to the changed height of the folding products in the Scale flow. The relationship between the Thickness of the folded product and the height of the boom 41 under the blades of the paddle wheel 38 from 1: 4 to 1: 6.

In the direction of rotation of the clockwise Puncture and counter cutting cylinder 16 seen behind the second folding roller 37 is a brush roller 78 as a pressing device for the signatures arranged fixed to the side frame. This brush roller 78 consists of a shaft driven by the main drive and a roller driven thereon via pinions or Slices. The size of the roller or disks is wholly or partially with bristles or a other soft material. The direction of rotation the brush roller 78 is opposite to that of the folding, puncture and counter-cutting bar cylinder 16 and the peripheral speed is up to 30% larger than that of the mentioned fold, puncture and Counter-cutting bar cylinder 16. By the arrangement this brush roller 78 is an exact guide and Tightening of those separated from the paper web strand 42 Signatures are also given when the point sets 17 to 20 have been withdrawn. This will an exact folding of the signatures to folding products even possible at high production speeds. The brush roller 78 is preferably only over hers half circumference with bristles or the like. Equipped and so synchronized with the folding knives 27 to 30, that at the time of withdrawing the signatures due to the transverse folding process the fold, puncture and Milling cutter cylinder 16 the bristle-free Side of the brush roller 78 is facing. The Brush roller 78 is according to the thickness of the Signatures in their distance to the fold, puncture and Counter-cutting bar cylinder 16 adjustable.

The collecting and cutting cylinder 2 as well as the folding, Puncture and counter-cutting cylinder 16 are partially surrounded by paper guiding devices 79, which z. B. from the lateral surface of the collector and Cutting cylinder 2 and the folding, puncture and Counter cutting cylinder 16 adapted rods can exist.

The passage of the paper web strand 42 takes place as described below: The paper web strand 42 is fed to the collecting and cutting cylinder 2 via the pulling roller group 43, 44. During the rolling process of the collecting and cutting cylinder 2 with the folding, puncturing and counter-cutting bar cylinder 16, the incoming paper web strand 42 is pierced by one of the point sets 17 to 20. A roller 98 mounted above the side of the puncture line of these point sets 17 to 20 prevents the paper web strand 42 from escaping -, Puncture and counter cutting cylinder 16 counter cutting strips 22 to 25, the paper web strand 42 is separated into signatures. In the case of double production, these signatures 42 are then taken over by one of the point sets 17 to 20 of the folding, puncturing and counter-cutting bar cylinder 16 and fed to the folding rollers 36, 37. This point set begins about 20 ° before the time of folding with the withdrawal from the signatures and the brush roller 78 takes over the product management. The paper guide devices 79 continue to guide the folded products to the paddle wheel 38. From there, the folded products are fed to the boom 41 by means of the stripper chain 39. The stripper chain 39 is equipped on its circumference with a number of fingers which, due to their development with the paddle wheel 38, push the folded products out of the blades of the paddle wheel 38. In the case of collective production, the first section of the signatures is guided around the collecting and cutting cylinder 2 when collecting. During the second pass, the second and first sections of the signatures are picked up by the point sets 17 to 20 and fed to the folding rollers 36, 37. The point set in question is also withdrawn 20 ^o before the time of folding and the brush roller 78 takes over the product management until the folding product is withdrawn or drawn into the folding rollers 36, 37.

Parts list

1

Side frame

2nd

Collection and cutting cylinder

3rd

-

4th

Knife bar (2)

5

Cutter bar (2)

6

Cutter bar (2)

7

Cutter bar (2)

8th

Cutter bar (2)

9

-

10th

Punctuation, controlled (2)

11

Point set, controlled (2)

12th

Point set, controlled (2)

13

Point set, controlled (2)

14

Point set, controlled (2)

15

-

16

Folding, Puncture and counter cutting bar cylinders, combined

17th

Point set, controlled (21)

18th

Point set, controlled (21)

19th

Point set, controlled (21)

20th

Point set, controlled (21)

21

Folding knife carrier (16)

22

Counter Cutting Bar (21)

23

Counter Cutting Bar (21)

24th

Counter Cutting Bar (21)

25th

Counter Cutting Bar (21)

26

Counter-cutter and puncture carrier (16)

27

Folding knife, rotatable (26)

28

Folding knife, rotatable (26)

29

Folding knife, rotatable (26)

30th

Folding knife, rotatable (26)

31

-

32

Differential gear (21, 26)

33

-

34

-

35

-

36

Folding roller

37

Folding roller

38

Paddle wheel

39

Scraper chain

40

-

41

boom

42

Paper web strand

43

Pull roller

44

Pull roller

45

-

46

scope

47

Pinpoint

48

Support bracket

49

Groove

50

-

51

Groove base

52

rifle

53

Compression spring

54

Can bottom

55

-

56

head

57

screw

58

Space

59

room

60

-

61

Connector

62

Pipe, hose

63

Compressed air reservoir

64

Pipe, hose

65

-

66

Blind hole

67

wave

68

Shaft end

69

Rotor connection

70

-

71

pipe

72

Pressure control valve

73

Compressed air source

74

manometer

75

-

76

Compressed air reservoir

77

Gear motor (36, 37)

78

Brush roller (16)

79

Paper guide

80

to 97 -

98

roller

Claims (5)

1. Flying tuck folding apparatus for a web-fed rotary printing machine for collection and double production, having a folding drum (16) and a cutting cylinder (2) as well as folding rolllers (36, 37), characterized in that a five-section collection and cutting cylinder (2) that has controlled pin sets (10, 11, 12, 13, 14) and cutting devices (4, 5, 6, 7, 8) cooperates with a solid, four-section folding, pin and counter-cutting-bar cylinder (16) that has controlled pin sets (17,18,19,20), counter-cutting bars (22, 23, 24, 25) and rotating folding blades (27, 28, 29, 30), in that a device for changing the sheet spacing between folding blades (27, 28, 29, 30) and the pin sets (17, 18, 19, 20) respectively assigned to the said blades is provided on the folding, pin and countercutting-bar cylinder (16).
2. Flying tuck folding apparatus according to Patent Claim 1, in which the five-section collecting and cutting cylinder (2) is replaced by a seven-section collecting and cutting cylinder, and the four-section folding, pin and counter-cutting-bar cylinder (16) is replaced by a six-section folding, pin and counter-cutting-bar cylinder.
3. Flying tuck folding apparatus according to Patent Claims 1 or 2 [sic], characterized in that, upstream of an entry wedge area of a paper web train (42), in the area lying between the collecting and cutting cylinder (2) and the folding, pin and counter-cutting-bar cylinder (16), there is arranged a roller (98) that is mounted fixedly on the side frame.
4. Flying tuck folding apparatus according to Patent Claims 1 to 3, characterized in that, on the periphery of the folding-pin and counter-cutting-bar cylinder (16), downstream of the second folding roller (37) as viewed in the production direction, there is arranged a brush roller (78), whose distance from the folding, pin and counter-cutting-bar cylinder (16) is adjustable and which is driven in the opposite direction of rotation and at an increased peripheral speed.
5. Flying tuck folding apparatus according to Patent Claims 1 to 4, characterized in that the folding, pin and counter-cutting-bar cylinder (16) has a folding-blade carrier (21) and a counter-cutting bar and pin carrier (26), in that folding-blade carrier (21) and counter-cutting bar/pin carrier (26) are arranged to be mutually adjustable in the peripheral direction.

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