EP1721853B1 - Folding jaw cylinder of a folding apparatus for a printing machine. - Google Patents

Description

The invention relates to a jaw cylinder of a folding apparatus for a printing press according to the preamble of claim 1.

The DE 44 15 620 C2 discloses a jaw cylinder for a folder of a printing press. The jaw cylinder disclosed therein has a plurality of jaws, each of a controllable or movable jaw jaw (controlled jaw) and a fixed or immovable jaw jaw (fixed counter-flap) are formed. The controllable or movable jaw jaws are a first cylinder part (discs) and the fixed or immovable Falzklappenbacken are associated with a second cylinder part (cylinder body). The disks forming the first cylinder part and the cylinder body forming the second cylinder part are rotatably mounted on a common axle or shaft, wherein the second cylinder part with the fixed jaw jaws is positioned between the disks serving to mount the controllable jaw parts. The two cylinder parts are adjustable relative to each other to adjust the opening width or jaw width of the jaws. The relative adjustability of the two cylinder parts to each other or the controllable Falzklappenbacken relative to the fixed Falzklappenbacken takes place in the DE 44 15 620 C2 with the help of a manually operated adjusting eccentric pin.

From the EP 0 453 868 A1 the Applicant is known a jaw cylinder, wherein the jaw body, which in turn carry the adjustable and the fixed jaws are adjusted with a gear in opposite directions of rotation to allow a pincer-like adjustment of a respective controllable and an associated fixed jaw.

Furthermore, from the DE 44 04 752 A1 the Applicant a device for adjusting the jaws known, in which without gear arrangement, the adjustment of the controllable and the associated fixed jaws is made possible by an eccentrically mounted folding jaw carrier.

On this basis, the present invention is based on the problem to provide a novel jaw cylinder of a folding machine for a printing press.

This problem is solved by a jaw cylinder of a folding apparatus for a printing press according to claim 1. According to the invention, each cylinder part is assigned a respective shaft via which the cylinder parts are rotatably driven, whereby an intermediate gear is positioned coaxially with the shafts of the cylinder parts and is rotatably mounted with respect to the shafts, the intermediate wheel having on one side a drive and on the other hand at least one actuating unit is coupled, that the intermediate gear is driven by the drive and drives over the or each actuator in at least one of the shafts of the cylinder parts, and wherein the or each actuator is associated with an adjustment to the two cylinder parts and thus the cylinder parts associated Falzklappenbacken relative to each other adjust.

For the purposes of the present invention, a jaw cylinder of a folder for a printing machine is proposed, the two cylinder parts, which on the one hand the controllable Falzklappenbacken and on the other hand, the fixed Falzklappenbacken are assigned, motorized and automated (but also manually by hand wheel conceivable) relative to each other are adjustable. Each cylinder part is associated with a shaft through which the cylinder parts are rotatably driven. Coaxially to the shafts of the two cylinder parts, an intermediate wheel is positioned, which is freely rotatably mounted with respect to the shafts. This coaxially mounted on the two shafts intermediate wheel is coupled on the one hand with a drive and on the other hand with at least one actuator. The idler gear can be driven by the drive. About the or each actuator drives the idler in at least one of the waves of the two cylinder parts. The or each control unit is further associated with an adjusting drive to adjust the two cylinder parts and thus the two cylinder parts associated, controllable and fixed Falzklappenbacken to adjust the opening width or jaw width of the jaws relative to each other. The folding jaw cylinder according to the invention is structurally simple and allows both a symmetrical and an asymmetrical adjustment of the controllable and fixed jaw jaws to each other in adjusting the opening width or jaw width of the jaws. The adjustment is low backlash, reliable and very accurate.

Fig. 1:

eine schematisierte Darstellung eines erfindungsgemäßen Falz- klappenzylinders eines Falzapparats für eine Druckmaschine nach einem ersten Ausführungsbeispiel der Erfindung;

Fig. 2:

eine schematisierte Darstellung eines erfindungsgemäßen Falz- klappenzylinders eines Falzapparats für eine Druckmaschine nach einem zweiten Ausführungsbeispiel der Erfindung; und

Fig. 3:

eine schematisierte Darstellung eines erfindungsgemäßen Falz- klappenzylinders eines Falzapparats für eine Druckmaschine nach einem dritten Ausführungsbeispiel der Erfindung.

Preferred embodiments of the invention will become apparent from the dependent claims and the description below. Embodiments of the invention will be described, without being limited thereto, with reference to the drawings. Showing:

Fig. 1:

a schematic representation of a folding flap cylinder according to the invention of a folding apparatus for a printing press according to a first embodiment of the invention;

Fig. 2:

a schematic representation of a folding flap cylinder according to the invention of a folding apparatus for a printing press according to a second embodiment of the invention; and

3:

a schematic representation of a folding flap cylinder according to the invention of a folding apparatus for a printing press according to a third embodiment of the invention.

Hereinafter, this present invention will be described with reference to FIG Fig. 1 to 3 described in more detail.

Fig. 1 shows a first embodiment of a jaw cylinder 10 of a folding apparatus according to the invention. The jaw cylinder 10 of Fig. 1 has a two-part construction of two cylinder parts 11 and 12, wherein a first cylinder part 11 controllable or movable Falzklappenbacken and a second cylinder part 12 fixed or immovable Falzklappenbacken are assigned. Of course, in the context of the invention, all jaw jaws also be movable and controllable.

The controllable or movable Falzklappenbacken and the fixed or immovable Falzklappenbacken form the jaws. As Fig. 1 shows, the first cylinder part 11 associated, movable jaw jaws over a cam 13 driven, wherein on the cam 13, a control roller 14 rolls, which controls the movable jaw jaws via an actuator 15.

Both cylinder parts 11 and 12 are each assigned a shaft 16 and 17, wherein via the shafts 16 and 17, the cylinder parts 11 and 12 are driven. According to Fig. 1 the shaft 17 is assigned to the first cylinder part 11, the shaft 16 and the second cylinder part 12, wherein both shafts 16 and 17 are arranged coaxially with one another and enclose each other concentrically at least in sections. Both shafts 16 and 17 are each assigned a driving wheel 18 and 19, which is fixed or non-rotatably connected to the respective shaft 16 and 17, and which serves to drive the shafts 16 and 17 and thus the cylinder parts 11 and 12 respectively.

The jaw cylinder 10 has a coaxial with the shafts 16 and 17 positioned and with respect to the shafts 16 and 17 rotatably mounted idler 20. The idler 20 is coupled on the one hand with a drive wheel 21 of a drive and on the other hand with a drive gear 22 of an actuator 23. In the embodiment of Fig. 1 the adjusting unit 23 next to the input gear 22 via two Abtriebräder 24 and 25, wherein the output gear 24 is coupled to the mounted on the shaft 16 input gear 18 and the output gear 25 with the mounted on the shaft 17 input gear 19.

Via the drive wheel 21 of the drive, therefore, the intermediate wheel 20 is driven, which drives via the drive gear 22 in the actuator 23 to the Abtriebräder 24 and 25 of the actuator 23 and the shafts 16 and 17 associated Eintriebräder 18 and 19, the two cylindrical parts eleventh and 12 to turn.

Due to the in Fig. 1 shown diameter ratios of the Abtriebräder 24 and 25 relative to the Eintriebrädern 18 and 19 both cylinder parts 11 and 12 in the operation of the jaw cylinder 10 driven at the same speeds.

By a suitable selection of the number of teeth of the Abtriebräder and Eintriebräder the internal translation of the actuator (Harmonic Drive) is compensated.

The actuator 23 is according to Fig. 1 an adjustment 26 assigned. With the aid of the adjusting drive 26, the relative distance between the controllable or movable jaw jaws and the fixed or immovable Falzklappenbacken the jaws of the jaw cylinder 10 can be adjusted to adjust the opening width or mouth width of the jaws. The adjusting drive 26 drives for this purpose in the setting unit 23, wherein the two cylinder parts 11 and 12 can be adjusted either symmetrically or asymmetrically to each other via the setting unit 23. With the aid of the adjustment drive 26, the movement of the cylinder parts 11 and 12 provided by the drive wheel 21 can thus be superimposed on a movement component in order to adjust the cylinder parts 11 and 12 independently of the so-called main drive provided by the drive wheel 21 relative to one another. The adjustment can be done at standstill and in the machine.

A second embodiment of a jaw cylinder 27 according to the invention shows Fig. 2 , The jaw cylinder 27 of the embodiment of Fig. 2 has as well as the jaw cylinder 10 of the embodiment of the Fig. 1 about two cylinder parts 28 and 29, wherein a first cylinder part 28 turn the controllable or movable jaw jaws and a second cylinder part 29, the fixed or immovable jaw jaws are assigned. The control of the movable jaw jaws via a cam 30, on which a control roller 31 rolls, which cooperates with an actuator 32 for controlling the movable jaw jaws.

Each of the two cylinder parts 28 and 29 is in turn each a shaft 33 and 34 associated with a on the respective shaft 33 and 34 rotatably mounted input gear 35 and 36 respectively. The shaft 33 with the input gear 35 acts together with the first cylinder part 28 and the shaft 34 with the input gear 36 with the second cylinder part 29 together. Also in the embodiment of Fig. 2 is coaxial with both shafts 33 and 34, an intermediate wheel 37 is positioned, which is freely rotatably mounted relative to the shafts 33 and 34.

The intermediate gear 37 is coupled to a drive wheel 38 of a drive and further according to Fig. 2 each of the two actuators 41 and 42 has in addition to the input gear 39 and 40 via an output gear 43 and 44, wherein the output gear 43 of the actuator 41 with the input gear 35 of the shaft 33rd and the output gear 44 of the actuator 42 is coupled to the input gear 36 of the shaft 34. In the embodiment of Fig. 2 is therefore in contrast to the embodiment of Fig. 1 each of the two cylinder parts 28 and 29 assigned their own adjusting unit 41 and 42, respectively.

With two actuators 41 and 42, an adjustment 45 cooperates, which drives via input wheels 46 and 47 in the actuators 41 and 42, respectively, to adjust the cylinder parts 28 and 29 for adjusting the opening width or jaw width of the jaws relative to each other. This adjustment can in turn be symmetrical or asymmetrical and independent of the provided by the drive wheel 38, so-called main drive.

In the embodiments of the Fig. 1 and 2 the actuators are preferably designed as a so-called harmonic drive gear.

Another embodiment of a jaw cylinder 48 according to the invention shows Fig. 3 , Also, the jaw cylinder 48 of Fig. 3 has two cylinder parts 49, 50, wherein a first cylinder part 49 movable or controllable Falzklappenbacken and a second cylinder part 50 immovable or fixed Jaw jaws are assigned. The control of the movable jaw jaws in turn via a cam 51 on which a control roller 52 rolls, which cooperates with an actuator 53 for actuating the movable jaw jaws. Both cylinder parts 49, 50 are each assigned a shaft 54 or 55, on which input gears 56 and 57 are mounted non-rotatably or non-rotatably. The shaft 54 with the input gear 56 acts according to Fig. 3 with the first cylinder part 49 and the shaft 55 with the input gear 57 cooperates with the second cylinder part 50.

Also in the embodiment of Fig. 3 is coaxial with the two shafts 54 and 55, an intermediate gear 58 is positioned, which is freely rotatable relative to the shafts 54 and 55 mounted on the same. The intermediate gear 58 is coupled to a drive wheel 59 of a drive, and according to Fig. 3 Furthermore, with a drive wheel 60 of an actuating unit 61. In the embodiment of the Fig. 3 a single actuator 61 is present, which has a single driven wheel 62, which according to Fig. 3 is coupled to the mounted on the shaft 55 input gear 57. As a result, the drive of the shaft 55 and thus of the second cylinder part 50 takes place.

The input into the shaft 54 associated input gear 56 for driving the cylinder part 49 also takes place via the cylinder part 50 associated with the shaft 55, via a differential gear or bevel gear 63. The bevel gear 63 is of the shaft 54 associated formed as a bevel gear An input gear 56 and one of the shaft 55 associated bevel gear 64 is formed, with these two bevel gears 56 and 64, a so-called bevel pinion 65 cooperates. The bevel pinion 65 is according to Fig. 3 rotatably supported by a guide 66 on the intermediate gear 58. About the bevel gear 63 is a mechanical coupling between the two cylinder parts 49 and 50th

For relative adjustment of the two cylinder parts 49 and 50, the adjusting unit 61 is in turn associated with an adjusting drive 67, wherein via the adjusting drive 67 a independent of the drive or drive wheel 59, symmetrical adjustment of the two cylinder parts 49 and 50 relative to each other is possible.

All embodiments of the Fig. 1 to 3 is common that the two cylinder parts of the jaw cylinder is assigned in each case a shaft, wherein coaxial with these two shafts, an intermediate wheel is positioned, which is coupled to a drive. The intermediate wheel drives with the interposition of at least one actuating unit in the cylinder parts of the jaw cylinder.

The or each control unit is associated with an adjusting drive, via which, independently of the main drive, the two cylinder parts can be adjusted relative to each other to adjust the opening width or jaw width of jaws of the jaw cylinder. The adjustment of the two cylinder parts to each other can be done symmetrically or asymmetrically.

The or each actuator for relative adjustment of the cylinder parts to each other is arranged outside of the jaw cylinder on a drive side of the folder, so that no corresponding control elements are integrated in the jaw cylinder. This eliminates the otherwise necessary measures for dust protection and maintenance of corresponding components in the jaw cylinder.

LIST OF REFERENCE NUMBERS

10

jaw cylinder

11

cylinder part

12

cylinder part

13

cam

14

control roller

15

actuator

16

wave

17

wave

18

Eintriebrad

19

Eintriebrad

20

idler

21

drive wheel

22

Eintriebrad

23

actuator

24

output gear

25

output gear

26

adjustment

27

jaw cylinder

28

cylinder part

29

cylinder part

30

cam

31

control roller

32

actuator

33

wave

34

wave

35

Eintriebrad

36

Eintriebrad

37

idler

38

drive wheel

39

Eintriebrad

40

Eintriebrad

41

actuator

42

actuator

43

output gear

44

output gear

45

adjustment

46

Eintriebrad

47

Eintriebrad

48

jaw cylinder

49

cylinder part

50

cylinder part

51

cam

52

control roller

53

actuator

54

wave

55

wave

56

Eintriebrad

57

Eintriebrad

58

idler

59

drive wheel

60

Eintriebrad

61

actuator

62

output gear

63

bevel gear

64

bevel gear

65

bevel pinion

66

guide

67

adjustment

Claims (7)

1. A folding-jaw cylinder of a folding apparatus for a printing machine, having a plurality of folding jaws, wherein first, in particular activatable, folding-jaw cheeks of each folding jaw are associated with a first cylinder portion (11; 28; 49), and second, in particular fixed, folding-jaw cheeks of each folding jaw are associated with a second cylinder portion (12; 29; 50), and wherein the two cylinder portions can be adjusted relative to each other in order to set the opening width or mouth width of the folding jaws, characterised in that there is associated with both cylinder portions a respective shaft (16, 17; 33, 34; 54, 55) by way of which the cylinder portions can be driven in rotation, wherein an intermediate wheel (20; 37; 58) is positioned coaxially in relation to the shafts of the cylinder portions and is rotatably mounted with respect to the shafts, wherein the intermediate wheel is coupled on the one hand to a drive and on the other hand to at least one actuating unit (23; 41, 42; 61) in such a way that the intermediate wheel can be driven by the drive and inputs drive by way of the or each actuating unit into at least one of the shafts of the cylinder portions, and wherein an adjusting drive (26; 45; 67) is associated with the or each actuating unit (23; 41, 42; 61) in order to adjust relative to each other the two cylinder portions and thus the folding-jaw cheeks that are associated with the cylinder portions so that both a symmetrical and a non-symmetrical adjustment of the activatable and fixed folding-jaw cheeks is achieved.
2. A folding-jaw cylinder according to claim 1, characterised in that the intermediate wheel is coupled to a driving wheel (21; 38; 59) of the drive and to an input wheel (22; 39, 40; 60) of at least one actuating unit, wherein the or each actuating unit inputs drive by way of at least one output wheel (24, 25; 43, 44; 62) into in each case at least one of the shafts of the cylinder portions.
3. A folding-jaw cylinder according to claim 2, characterised in that each output wheel (24, 25; 43, 44; 62) of each actuating unit is coupled to an input wheel which is associated with a shaft and is connected to the respective shaft in a rotationally secure manner and pertains to the respective cylinder portion that is connected to the shaft.
4. A folding-jaw cylinder according to claim 3, characterised by one single actuating unit (23), wherein the actuating unit (23) has an input wheel (22), coupled by way of the intermediate wheel (20) to the driving wheel (21) of the drive, and also two output wheels (24, 25), and wherein each output wheel (24, 25) of the actuating unit (23) is coupled to a respective shaft (16, 17) of the two cylinder portions (11, 12) by way of a respective input wheel (18, 19) that is mounted in a rotationally secure manner on the respective shaft.
5. A folding-jaw cylinder according to claim 3, characterised by two actuating units (41, 42), wherein each actuating unit (41, 42) has an input wheel (39, 40) that is coupled by way of the intermediate wheel (37) to the driving wheel (38) of the drive, and wherein each actuating unit (41, 42) has, furthermore, a respective output wheel (43, 44) coupled to a respective shaft (33, 34) of the two cylinder portions (28, 29) by way of a respective input wheel (35, 36) that is mounted on the respective shaft in a rotationally secure manner.
6. A folding-jaw cylinder according to claim 5, characterised in that the adjusting drive (45) is coupled to both actuating units (41, 42).
7. A folding-jaw cylinder according to claim 3, characterised by one single actuating unit (61), wherein the actuating unit (61) has an input wheel (60) which is coupled to the driving wheel (59) of the drive by way of the intermediate wheel (58), wherein the actuating unit (61) has, furthermore, an output wheel (62) which is coupled to a shaft (55) of one of the two cylinder portions by way of an input wheel (57) that is mounted on the shaft (55) in a rotationally secure manner, and wherein the shaft (55) that is coupled to the output wheel (62) of the actuating unit (61) is coupled to the shaft (54) of the other cylinder portion in order to input drive into the same by way of a differential-gear unit or bevel-gear unit (63).

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