EP0972733B1 - Device for changing the speed of signatures - Google Patents

Description

The present invention relates to an apparatus for changing the Speed of copies, for example signatures or folded flat Products such as those that are manufactured and processed in a folder.

EP 0 498 068 B1, from which the preamble of the claim is based, relates to a folder in which the transport of the Folded copies are made using means of transport, tape rolls and tapes. It is one high-speed first belt arrangement, consisting of upper belts and lower belts Belts are provided between which the folded copy is transported. Furthermore, one with variable speed drivable tape reel assembly provided with while their rotation of exactly lying phase upper band rolls and lower band rolls, which the fold copy brought up by the first belt arrangement in the area of the latter Grasp the leading edge and transport it further. Furthermore, a slow-running second Band arrangement is provided, which consists of upper bands and lower bands that capture the folded copy from the tape rolls at its front edge and transport further. The upper and lower band rolls point to their circumference Recesses on, with parts of the tape rolls with a large diameter by a Rubber coating are formed and to dose the force between the tape rolls at least one shaft can be pivoted by means of adjusting elements.

EP 0 256 795 B1 discloses an apparatus for processing sheets, the one Means comprising the blades moving at a first speed can record, and transported to a conveyor, which by means of a significantly different speed is driven. The facility includes a first rotatable drive element for accelerating and decelerating the blades hand them over to the conveyor at an adequate speed. The first Drive element is driven by a mechanism that is a planetary gear includes which contains a sun gear. A planet gear is arranged so that it is in Operation revolves around the sun gear. A first rotating element is off the axis of the Planet gear attached, but driven by the rotating planet gear and the first drive element is for rotation by moving the first one Rotary element coupled. The first drive element is rotatable on the sun gear axis and stored on the other side of the sun gear. The second drive element is through a second or more second rotary elements are rotatably coupled, which are arranged so that they have a rotational movement in the opposite direction to the movement of the or every first rotating element. The second drive element is mechanical with coupled to a counterweight, which is intended to accommodate changes in the Compensate inertia, which are transmitted to the first drive element. The Arrangement is provided so that the drive elements a predetermined Follow the speed and acceleration profile, which is repeated periodically.

There may be one in both of the solutions disclosed in the above documents uncontrolled braking, loss of display accuracy and Damage to the fold copies come, which is especially true with high Processing speeds occur, as well as extremely light Bedruckstoffgrammaturen. The impairments shown are partly due to this worsened when the folds of two at the same time Conflicting funding institutions can be recorded, such as a funding system for higher speeds and a conveyor system for lower speeds. So can, for example, the leading area of the fold copy already in the Slowdown device may have occurred while the rear area of the Folded copies through the conveyor systems for high speeds, as it were in the Slowing device is pushed in, causing upset symptoms on Fold copy can come. This is true for the solution according to EP 0 498 068 B1 achieved by cyclically varying the angular velocity of conveyor rollers in order to to achieve a continuous delay of the folded copies, however the variable pulls Speed change dynamic and constantly changing stresses of the Components, which affect the mechanical reliability of the assemblies can.

In view of the prior art shown, the present invention is the Based on the task that occurs when braking flat products To reduce inertial forces as much as possible, so that only the mass of each Braking copy to be braked generates deceleration forces.

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

Further refinements of the idea on which the invention is based, can be found in claims 2-13.

The invention is explained in more detail below with reference to a drawing.

Fig. 1

eine Seitenansicht eines Falzapparates mit übereinander angeordneten Exemplarauslagesystemen,

Fig. 2

in detaillierter Ansicht den Auslaufbereich einer schnellaufenden Exemplarfördereinrichtung, innerhalb der Einrichtungen zur Verzögerung der Geschwindigkeit der Exemplare aufgenommen sind,

Fig. 3a bis 3d

unterschiedliche Winkellagen exzentrisch gelagerter Verzögerungseinrichtung,

Fig. 4

eine Darstellung des Antriebes der Verzögerungseinrichtung in gestrecktem Längsschnitt wiedergegeben,

Fig. 5

die Darstellung eines Geschwindigkeitsdiagrammes der Verzögerungseinrichtung, sowie

Fig. 6

die Darstellung eines Geschwindigkeitsdiagramms der Verzögerungseinrichtung mit einer anderen Länge der Belagsektionen als die in Fig. 5 gezeigte.

It shows:

Fig. 1

a side view of a folding apparatus with copy delivery systems arranged one above the other,

Fig. 2

a detailed view of the run-out area of a high-speed specimen conveying device, within which devices for delaying the speed of the specimens are included,

3a to 3d

different angular positions of the eccentrically mounted deceleration device,

Fig. 4

a representation of the drive of the deceleration device in a stretched longitudinal section,

Fig. 5

the representation of a speed diagram of the delay device, and

Fig. 6

the representation of a speed diagram of the delay device with a different length of the lining sections than that shown in FIG. 5.

Fig. 1 gives the side view of a folder with one above the other Copy delivery systems again.

A web of material 2 running into a folder via a former 1 is passed over Pull roller pairs 3, 3 'and 4, 4' guided on a puncture cylinder 7. Between Cylinder pairs 3, 3 'and 4, 4' can be perforated cylinders 5, 5 ', which perforate the material web 2 in such a way that enclosed air cushions escape more easily can to improve the folding accuracy. In addition to the puncture cylinder 7, the one Number of punctures 6, 6a, 6b and 6c, a cutting cylinder 9 is provided, which is equipped with cutting knives 8, 8 ′ in order to move from the incoming material web 2 to separate copies.

Although used in a folder with punctures, the invention may equally well a pointless folder before the copies were issued in Paddle wheel arrangements, for example, are used, as well Plano cross cutting, in the case of cutting devices within inline finishing Systems as well as in sheet-fed rotary printing machines or copiers. In addition to the Braking specimens can also be subjected to accelerations or from a formation in a row into a scale-like formation be transferred.

In addition to the puncture sets 61, 6b and 6c, on the puncture cylinder 7, Folding knife 10a, 10b and 10c added, with which the on the circumference of the Puncture cylinders 7 recorded copies in folding jaws 11a, 11b and 11c and 11d of a jaw cylinder 12 can be pushed in in this way to get one or more cross folds.

The continuously formed is divided behind the jaw cylinder 12 Fold copy flow into an upper and a lower flow. the Folding jaw cylinders 12 are upper and lower sections 34 and 35, respectively high-speed conveyor belts 14, 15 downstream. In this upper or lower Integrated sections 34, 35, there are deceleration rollers or deceleration rollers 22, 23; 24, 25. In one embodiment variant of the invention, the Retard rollers or retard rollers 22, 23; 24, 25 also outside the top or the lower section 34, 35. Behind the upper and lower sections 34, 35 are slower conveyor belts 36, 37; 38, 39 switched. In the funding path this slow conveyor belts 36, 37 and 38, 39 are respectively an upper and a lower one second longitudinal folding device 13, 13 'is provided, which the folding copies with a provided second longitudinal fold and in for example provided paddle wheels introduce through which the thus folded copies are then transported and if necessary, can be processed further.

As can be seen from the illustration according to FIG. 1, the upper one comprises Section 34 high-speed conveyor belts 14, 15, while the lower section 35 high-speed conveyor belts 16, 17 includes. In the path of the high-speed Conveyor belts 14, 15 of the upper section 34 are first and second pull rollers 18, 19, respectively integrated; in the lower section 35 these are drawing rollers with the reference number 20 and 21 provided. The deceleration rollers 22, 23; 24 and 25 of the top and bottom Sections 34 and 35 are provided with covering sections 60, 61, which do not cover the whole Cover the circumference of the retard rollers 22, 23, 24, 25. The fast-moving Conveyor belts 14 15; 16, 17 spread in their slower running Conveyor belts 36, 37; 38, 39 assigning something to what the high-speed conveyor belts 14, 15, 16, 17 just as far from the Remove the specimen transport level so that the specimens - after they are removed from the Retard rollers 22, 23; 24, 25 have been recorded - exclusively by these are seized and no more contact with the high-speed conveyor belts 14, 15; 16 17 more exists. The high-speed conveyor belts 14, 15, 16, 17 are by means of the Drive shafts 30, 31 for the upper section 34 and with the drive shafts 32, 33 for the lower section 35 driven at the speed corresponding to the conveying speed of the Copies on the jaw cylinder 12 corresponds. Using this configuration (see also Fig. 2) can the distances between individual versions of the copies in the various conveyors or slowdowns can be chosen so that the copies are only taken by one of the conveyor and deceleration systems while the rear sections are just about 20 mm long become. The transitions occurring between the individual funding institutions could also by another belt guide for the slow-moving conveyor belts 36, 37 the pull rollers 18, 19 are realized; also an attachment itself in a horizontal Direction of guide plates would be conceivable.

In the folder combination shown in Fig. 1, two second Longitudinal folding devices 13 and 13 'used, on the one hand, their mechanical To reduce loads in the company and, on the other hand, those to be processed at full load Manage product flow reliably. Since the two second longitudinal folding devices 13, 13 'working at a lower speed compared to the cross folding cylinders is one It is necessary to slow down the conveying speed of the lengthways to be folded. The folder configuration shown allows production in magazine mode if the copies taken from the jaw cylinder 12 through both sections 34, 35 parallel or production in tabloid mode if only the top or only the lower sections 34 and 35 convey the specimens for display.

2 shows a detailed view of the outlet area of the high-speed conveyor belts 14, 15, - here, for example, the upper section 34 - inside of a facility to change the speeds of the specimens is integrated. In an embodiment not shown here, the Device for changing the speed also outside the outlet area of the high-speed conveyor belts.

A copy of the circumference of the jaw cylinder 12 in the upper section 34 is gripped by the high-speed conveyor belts 14, 15. The copy happens first and second pull rollers 18, 19 of the upper section 34, and at the same time from the covering sections 60, 61, to which its trailing end the gap between the pull rollers 18, 19 of the upper section 34 leaves. Because behind the gap between the first and second pull rollers 18, 19 the high-speed conveyor belts 14, 15 move apart gradually, the specimens are no longer affected by this and can by the recorded on the deceleration rollers 22, 23 Pad sections 60, 61 are braked. The release of the copies by the Retard rollers 22, 23; 24, 25 takes place at the same time that the leading end of the specimens by the slow moving conveyor belts 36, 37 the around the take-up rollers 26, 27, is gripped. That from the slow running Conveyor belts 36, 37 formed system transports the specimens to the respective second longitudinal folding devices 13, 13 ', as already described in FIG. 1. Through the coordinated, successive release of copies, and the simultaneous Release of copies by the respective previous conveyor system, one can Achieve conflict-free, continuous delays in specimens.

Fig. 2 also shows a possibility of employing an upper deceleration roller 22 an underlying deceleration roller 23, the roller with the mentioned Covering sections 60, 61 are provided. The upper retard roller 22 is on one Pin 65 pivotally received on the carrier 66. The carrier 66 can in the direction of Double arrow can be moved up and down. The carrier 66 rests in the position shown the adjustable stop 67. By means of the articulated on the adjusting pin 64 of the carrier 66 Actuating cylinder 62 can prevail in the gap between the covering sections 60 and 61 Force can be adjusted. Furthermore, by means of the actuating cylinder 62, mounted in the Abutment 63 provides access to the high-speed conveyor belts 14, 15 be improved.

In Fig. 2, the drive gears 44 and 45 are indicated, via which the Retard rollers 22, 23 are driven. As in connection with Fig. 4 still will be explained in more detail, are also on the delay rollers 22, 23 each inside and externally toothed portions 57 and 59 are provided by their engagement with each other the roll jackets of the deceleration rolls 22, 23; 24, and 25 in relation to the axes, on which they are recorded, a relative speed can be impressed. The gear wheels 44, 45 mesh with the gear wheels 42, 43, see illustration according to FIG. 4. 2 that the deceleration rollers 23, 23 are in a slowly opening gusset because the fast-running ones Conveyor belts 14, 15 gradually diverge and so the specimens shortly after theirs Takeover by the decelerating rollers 22, 23 from the high-speed ones Conveyor belts 14, 15 are released. Of these, they are at the time of Handover to slow-moving conveyor belts 36, 37 released. Waves 30, 31 serve to redirect the high-speed conveyor belts 14, 15 and the slow running conveyor belts 36, 37 and to minimize the distance to be bridged between the transport systems. To bridge the gap between the Transport systems can also be provided with stationary guides or slowly Running conveyor belts 36, 37 can also be deflected around the pull rollers 18, 19 be performed.

In Fig. 3 in sequences a, b, c and d is the transfer of a fold copy 100 by the Delay roller pair 22, 23 shown.

In the state shown in Fig. 3a, the folded copy 100, which with the Fold back is transported forward in the conveying direction from the covering sections 60, 61 seized when the folded copy 100 leaves the gap between the cylinders 18, 19 (Fig. 2). The folder 100, 61 with the Conveying speed of the high-speed conveyor belts 14, 15 detected; here for Time when the points 0 and 0 "of the topping sections 60, 61 are perpendicular are opposite. In Fig. 3 a are the shaft sections 52, 54 and their offset Position shown to each other. The continuous slowdown in FIG. 3a begins Folded copies 100, in FIG. 3b this lasts, in the illustration according to FIG. 3c it ends. The detection point shifts between the covering sections 60, 61 continuously from 0 "in Fig. a via p" in b to 0 "in Fig. c. In Fig. c has the folded copy 100 go through the braking so far that the fold back immediately before detection through the slow-moving conveyor belts 36, 37. In fig. c leaves that Folded copy 100 the gap in 0 "between the covering sections 60, 61 with the Speed of the slow moving conveyor belts 36, 37. In fig. 3 d has that Folded copy 100 in q "leave the entry point and is now exclusively the Detected by the slow-moving conveyor belts 36, 37 as it is subject to covering sections 60, 61 has been fully released.

Fig. 4 shows the drive configuration of the deceleration rollers in longitudinal section.

A crankshaft-shaped shaft 50 consists of a first shaft section 52.1 Rotation axis 52, with a cranked section 54, with axis 54 'and a second Shaft section 52.2 with the rotation axis 52 already mentioned. This upper one Crankshaft 50 corresponds to a lower crankshaft 51, which is also a first one Section 53.1 with axis of rotation 53, a cranked section 55 with axis 55 and comprises a second section 53.2 with the axis of rotation 53. The two crankshaft-shaped shafts 50, 51 are rotatable in the side walls 70, 71 of the Folders stored. The deceleration rollers 22, 23 are on the crankshafts 50 and 51 rotatably mounted. They move around their eccentricities 54 ', 55'. The Sections 52.1, 54, 52.2 and 53.1, 55, 53.2, which represent the crankshafts 50, 51, are driven by a gear train 42, 44, 45 and 43, while the Roll jackets of the two delay rolls 22, 23 by an internal / external toothing 56, 58 and 57, 59 are driven. Via a parallel one Gear train, comprising the gears 46, 48 49 and 47, with a sleeve approach provided internal gears 56, 57 driven so that the meshing with them Rotate external gears 58 and 59 relative to the offset shaft sections can. The crankshafts 50, 51 are driven such that they oppose the Direction of conveyance of the specimens 100 rotate while the roller shells of the Retard rollers 22, 23 center around the offset shaft sections 54, 55 in Move the conveying direction of the folded copies 100. As is further apparent from Fig. 4, the Covering sections 60, 61 in strips next to one another on the circumference of the roller shells the deceleration rollers 22, 23 attached, so that braking - or if desired, after appropriate conversion, also an acceleration - narrower Folded copies 100 can be achieved.

R =

Radius der Anordnung von Verzögerungswalze 22 und Belagsektion 60,

e₁ =

Exzentrizität zwischen Achse 52 der Wellenabschnitte 52.1, 52.2 und versetzten Achsabschnitt 54,

e₂ =

Exzentrizität zwischen geometrischem Mittelpunkt 80 zwischen Belagabschnitten 60, 61 auf den Verzögerungswalzen 22, 23 und den Rotationsachsen 54', 55' des ringförmigen Segmentes 60, 61 auf den Verzögerungswalzen 22, 23,

ω =

Absolutwert der Winkelgeschwindigkeit der Kurbelwellen 50 in Bezug auf die Seitenwände 70, 71

t=

Zeit

The angular velocity of the roller shells of the decelerating rollers 22, 23 relative to the crankshaft 50 is twice the angular velocity of the crankshaft 50 with respect to the side walls 70, 71. The linear velocity of the outer diameter of the decelerating roller 22 and lining section 60 is determined from: V = ω (R + 2 e cos ω t); e = e 1 + e 2 with e 1 = e 2 in which

R =

Radius of arrangement of deceleration roller 22 and pad section 60,

e ₁ =

Eccentricity between axis 52 of shaft sections 52.1, 52.2 and offset axle section 54,

e ₂ =

Eccentricity between the geometric center 80 between the covering sections 60, 61 on the deceleration rollers 22, 23 and the axes of rotation 54 ', 55' of the annular segment 60, 61 on the deceleration rollers 22, 23,

ω =

Absolute value of the angular velocity of the crankshafts 50 with respect to the side walls 70, 71

t =

time

During a full revolution of the deceleration rollers 22, 23 with respect to the Sidewalls 70, 71 (two revolutions, based on the crankshaft 50 follows the linear one Outer diameter speed of the decelerating roller assembly 22 and pad section 60 of a complete sine curve from A 'to C' (see Fig. 5) and once reaches the maximum and once the minimum value. To delay one Folded copy 100 uses half A'B 'of full cycle A'C'. To this The purpose is only half of the circumference of the roll shells of the delay rolls 22, 23 or 24, 25 provided with covering sections 60, 61-

5 shows how the Braking of the folded copies 100 takes place; At about half the size of the Retard rollers correspond to the length of the covering sections 60, 61 on the The section of the sine curve from A 'to B' can be used for roller shells according to FIG Braking the folded copies 100 can be used. In diagram A, A is the Entry speed of the folded copies referred to, with the speed A ' the fold copies 100 are detected before they are in accordance with the sinusoidal course of the Curve to be braked to speed B 'and to speed B' the slow-moving conveyor belts 36, 37 are handed over. The synchronization the angular velocity is such with the conveying frequency of the folded copies 100 matched that the crankshafts 50, 51 and the offset shaft sections 54, 55 a complete a full turn while a fold copy of the fast-running Belts 14, 15 is transported to the slow-moving belts 36, 37. alternative In the case of processing shorter fold copies 100, the crankshafts 50, 51 or 54, 55 rotate at double speed as briefly sketched above, while only a folded copy 100 from the high-speed conveyor belts 14, 15 to the slow running conveyor belts 36, 37 is transported. In this case, the Delay device one full turn back, without affecting the Folded copies 100 takes place.

6 shows an embodiment of the device with covering sections 60 ', 61', in which according to graphs B, C only a part of the sinusoidal Speed curve of the deceleration rollers is used for braking, such as it may be necessary, for example, for shorter lengths of the folded copies 100. It several devices for changing the speed (22, 23; 24, 25) can be connected in series in order to slow down and / or to reach a scaled specimen stream.

LIST OF REFERENCE NUMBERS

1

formers

2

web

3

pulling roller

3 '

pulling roller

4

pulling roller

4 '

pulling roller

5

perforating

5 '

perforating

6a

punctures

6b

punctures

6c

punctures

7

puncturing

8th

cutting blade

9

cutting blade

10a

folding blade

10b

folding blade

10c

folding blade

11a

jaws

11b

jaws

11c

jaws

11d

jaws

12

jaw cylinder

13

upper second longitudinal fold

13 '

lower second longitudinal fold

14

first upper high-speed belts

15

first lower high-speed belts

16

second upper high-speed belts

17

second lower high speed belts

18

first pull roller upper section

19

second pull roller upper section

20

first pull roller lower section

21

second pull roller lower section

22

Retard roller above

22 ' 23

Retard roller above

24

Deceleration roller below

25

Deceleration roller below

26

free role

27

free role

28

free role

29

free role

30

free role

31

free role

32

free role

33

free role

34

upper section

35

lower section

36

first upper slow conveyor belts

37

first lower slow conveyor belts

38

second upper slow conveyor belts

39

second lower slow conveyor belts

40

axis

41

axis

42

gear

43

gear

44

gear

45

gear

46

gear

47

gear

48

gear

49

gear

50

upper crankshaft

51

lower crankshaft

52

Axis of rotation of sections 52.1, 52.2

52.1

upper first section

52.2

upper second section

53

Axis of rotation of sections 53.1, 53.2

53.1

lower first section

53.2

lower second section

54

offset shaft section above

54 '

axis

55

offset shaft section below

55 '

axis

56

internal gearing

57

internal gearing

58

external teeth

59

external teeth

60

covering section

61

covering section

62

actuating cylinder

63

abutment

64

adjusting pin

65

spigot

66

carrier

67

adjustable stop

68

axis

69

spigot

70

Side wall

71

Side wall

80

Geometric center between pad section 60 and roller 22

81

Geometric center between pad section 61 and roller 23

100

folded copy

R:

Radius of base section 60, 61

e1:

Eccentricity between axes 52, 53 and 54 ', 55'

e ₂ :

Eccentricity between geometric center 80, 81 and 54 ', 55'

ω:

angular velocity

t:

time

Claims (13)

1. Device for changing the speed of flat products, the device comprising a first conveying configuration (14, 15, 16, 17) of higher speed consisting of conveyor drums and belts and a second conveying configuration (36, 37, 38, 39) of lower speed consisting of conveyor drums and belts, the flat products each being transported between the belts of the first and second conveying device, and deceleration rollers (22, 23, 24, 25) having cover sections (60, 61), the conveying paths of the high-speed conveying belts (14, 15; 16, 17) diverging as viewed in the conveying direction of the copies (100),
   characterized in that the deceleration rollers (22, 23, 24, 25) are arranged within the first conveying configuration (14, 15; 16, 17) of higher speed.
2. Device for changing the speed of flat products according to claim 1,
   characterized in that a respective deceleration roller (22, 24) of the deceleration roller pairs (22, 23; 24, 25) is movable, in particular pivotable, with respect to the respective other deceleration roller (23, 25).
3. Device for changing the speed of flat products according to claim 2,
   characterized in that the respective deceleration rollers (22, 24) designed for relative movement are received on a movable support (66).
4. Device for changing the speed of flat products according to one of claims 2 to 3,
   characterized in that the engagement force of the deceleration rollers (22, 24) designed for relative movement at deceleration drums (23, 25) that are received in a stationary manner is adjustable by means of an control cylinder (62).
5. Device for changing the speed of flat products according to one of claims 2 to 4,
   characterized in that the pivoting path of the support (66) about a journal (65) is limitable by an adjustable stop (67).
6. Device for changing the speed of flat products according to one of claims 1 to 5,
   characterized in that the high-speed conveyor belts (14, 15; 16, 17) and the low-speed conveyor belts (36, 37; 38, 39) are deflected about respective common axes (40, 41).
7. Device for changing the speed of flat products according to one of claims 1 to 6,
   characterized in that the deceleration rollers (22, 23; 24, 25) are each received on shaft sections (54, 55) arranged eccentrically with respect to axes of rotation (52, 53) and that roller jackets of the deceleration rollers (22, 23; 24, 25) supported on the offset shaft sections (54, 55) have a drive (56, 58; 57, 59) superimposed on the drive of the offset shaft sections (54, 55).
8. Device for changing the speed of flat products according to one of claims 1 to 7,
   characterized in that exterior toothings (58, 59) formed on the roller jackets of the deceleration rollers (22, 23; 24, 25) revolve in driven interior toothings (56, 57).
9. Device for changing the speed of flat products according to one of claims 1 to 8,
   characterized in that respective individual drives are associated with the roller jackets of the deceleration rollers (22, 23; 24, 25).
10. Device for changing the speed of flat products according to one of-claims 1 to 9,
    characterized in that the angular speed of the roller jackets of the deceleration rollers (22, 23; 24, 25) is two times the angular speed of the offset shaft sections (54, 55).
11. Device for changing the speed of flat products according to one of claims 1 to 10,
    characterized in that multiple adjacent cover sections (60, 61) are received on the circumference of the deceleration rollers (22, 23; 24, 25).
12. Device for changing the speed of flat products according to one of claims 1 to 11,
    characterized in that the deceleration rollers (22, 23, 24, 25) are arranged in such a way that the releasing of a flat product held between the deceleration rollers (22, 23, 24, 25) occurs at the same moment as the leading edge of the flat product is engaged by the low-speed conveyor belts (36, 37).
13. Device for changing the speed of flat products according to one of claims 1 to 11,
    characterized in that the deceleration rollers (22, 23, 24, 25) are arranged in such a way that each of the flat products is exclusively engaged by the deceleration rollers and the first or second revolving conveyor configuration.

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