EP0835837B1 - Devices for avoiding production failures in folding devices - Google Patents

Description

The invention relates to devices for preventing Production disruptions on folding devices accordingly the preamble of claims 1 and 2.

DE 32 39 799 C is a longitudinal folding device known in which the folded copies before Introduction of a second longitudinal fold - a so-called third fold - in the direction of transport against a number run from attacks. Below are the Folded copies using a longitudinal folding knife as well two fold rollers longitudinally folded.

US 51 58 524 A, which corresponds to the preamble of claims 1 and 2, discloses an apparatus for Longitudinal folds, being vertical according to a folding knife Movable stops are arranged to clear a paper jam to eliminate.

DE 41 09 730 A describes a pivotable Stop for sheet-controlled knife folding units, the is locked by means of a solenoid.

From practice it is known that during the Production of small pieces of paper before the attacks collect.

Usually, such a piece of paper just grows a stop on. This causes the signature to come at an angle to the stop and is then folded diagonally.

Larger pieces of paper remain on several strokes hanging, this leads to blockages and thus to longer ones Production downtimes.

In order to eliminate the above mentioned malfunctions, the currently applicable accident prevention regulations the machine stopped and the snippets must be removed. It also happens that through the closed Protective grille with slim tools that is tried Snippets during production before the attack push away.

A snippet removal by simultaneous lifting of all attacks is not during production possible because the folded product over the stop line gets out and the attacks then no longer can be deferred.

The invention is based, devices for a folding device with which Production disruptions due to paper residues or Paper particles can be avoided.

According to the invention, this object is achieved by the features of the characterizing parts of claims 1 and 2 solved.

The advantages that can be achieved with the invention exist especially in the fact that before the attacks collecting smaller or larger pieces of paper, i.e. loose parts of printed products as a result of moving the Attacks and thus the action of the attacks against Wipers are removed during operation. There not all, at least according to one embodiment variant Stops can be moved simultaneously during the Continue cleaning a partial number of strokes produced, d. H. the third fold can be introduced. Thus, an oblique folding of the printed products or blockages in the folder are avoided. In addition, it is possible to all at the same time Attacks with the printed products out of engagement bring. This means there is enough space for them Production types given that no third fold received, but the after going through the Longitudinal folding device for further processing be fed.

Several embodiments of the invention are in the Drawing shown and are closer below described.

Fig. 1

eine Seitenansicht der Längsfalzeinrichtung, entgegen der Zufuhrrichtung der Signaturen gesehen, jedoch ohne Darstellung einer Signatur;

Fig. 2

einen Schnitt II - II nach Fig. 1, jedoch mit Darstellung einer Signatur;

Fig. 3

eine vergrößerte schematische Schnittdarstellung eines den Falztisch an der Stelle des Schnittes II - II durchquerenden Anschlages in einem zweiten Ausführungsbeispiel;

Fig. 4

eine schematische Darstellung von weiteren Bewegungsrichtungen der Anschläge.

Show it

Fig. 1

a side view of the longitudinal folding device, seen against the feed direction of the signatures, but without showing a signature;

Fig. 2

a section II - II of Figure 1, but showing a signature.

Fig. 3

an enlarged schematic sectional view of a stop crossing the folding table at the location of section II-II in a second embodiment;

Fig. 4

is a schematic representation of further directions of movement of the stops.

A folder 1 - z. B. Longitudinal folding device - consists in a known manner of a driven Folding roller pair, 2, 3, a clockwise up and outgoing folding knife 4 and a frame-mounted Folding table 6, 7 towards the folding gap 8 rounded longitudinal edges 9, 11. A printed product 10 (Fig. 2), e.g. B. a signature or a single sheet, is on the left and right parts of several upper conveyor belts 12 and lower conveyor belts 13 detected and in the transport direction or Production direction C against one impact surface each 26 of the stops 16 to 25 and subsequently with a second longitudinal fold, d. H. a third fold Mistake.

The printed product 10 is between parallel acting means of transport, for. B. between the lower debris of the upper conveyor belts 12 and the upper debris of the lower conveyor belts 13. Suction belts, suction slides and the like can also be used as a means of transport. The stops 16 to 25 are spaced between the conveyor belts 12, 13 and can each consist of a rectangular sheet. The stops 16 to 25 are each connected to a linear drive, for. B. at the end of a piston rod 27 of a double-acting pneumatic cylinder 28 by means of a bracket 30. All working cylinders 28 are fastened to a carrier 29 which corresponds to the maximum width of the printed products 10. The carrier 29 is supported on both sides by means of tabs 14, 15 on brackets 31, 32 mounted on the frame. Each of the stops 16 to 25 located at the end of the piston rod 27 can each be arranged in a longitudinal guide arranged vertically in the carrier 29, e.g. B. slot 33 guided, that is adjustable in height, that is to say arranged in a vertical plane D back and forth. Each working cylinder 28 has two connections 34, 36. First connections 34 of the working cylinder 28 of every second stop 16, 18, 20; 25, 23, 21 are connected by means of a common pipeline 37 and are therefore subject to a common control command. The second connections 36 are connected to a common pipeline 39 and are also subject to a second common control command.
First connections 41 of the working cylinder 28 for the remaining stops 17, 19; 22, 24 are connected by means of a pipeline 42 and second connections 43 of the working cylinders 28 are connected to a pipeline 44.
The pipes 42, 44 also each correspond to separate control commands. The pipes 37, 39, 42 and 44 of the working cylinder 28 are connected to a compressed air reservoir, not shown, and an associated known control.

Each cylinder 28 is on the back of the Carrier 29, one in the direction of folding table 6 extending rectangular bracket 46 assigned, its second leg near the lower edge 47 the carrier 29 is bent and subsequently against the production direction C parallel to the Folding table 6 extends. This bracket 46 can its lower side, the folding table 6, 7 in the Cross-section be dovetail-shaped and one directed against the stop 16 to 25 Cleaning device, e.g. B. Scraper Knife 48 take up. The scraper knife 48 is a sheet metal strip trained, which with its in the production direction C facing lower edge 49 frictionally with the Impact surface 26 of each stop 16 to 25 in Connection is established (Fig. 2).

The device works as described below. As a result of a tax command are about half the number n / 2 17, 19, 22, 24 of the total number n of stops 17, 19, 22, 24; 16, 18, 20, 25, 23, 21 in an upper one Cleaning position A is located, d. H. they stand with a printed product 10 disengaged and are by means of the piston rods 27 of the working cylinder 28 upwards drawn. Thus the number mentioned is n / 2, i.e. one Group of stops 17, 19, 22, 24, d. H. about everyone second stop temporarily from the trajectory C the Print products have been spent. The scraper knives 48 thus face the impact surfaces 26 of the stops 16 to 25 in a relative movement to each other. In the Movement of the stops 17, 19, 22, 24 from the lower Operating position B in the upper cleaning position A have the edges 49 of the wipers 48 each with the Impact surface 26 stops 17, 19, 22, 24 frictionally cooperated so that a lower edge 51 of each Stops 17, 19, 22, 24 completely from paper residues 52 was cleaned (Fig. 2).

Alternately with the aforementioned groups of attacks 17, 19, 22, 24, the stops 16, 18, 20, 25, 23, 21 from a lower operating position B into a upper, removed from the folding table top 6, 7 Cleaning position A are brought.

Should printed products have no additional, e.g. B. third Receive fold, it is also possible to stop all 16 to 25 in the upper cleaning position A. The folding device 1 is thus removed from the printed products run through.

According to another embodiment variant, a Group of first stops 17, 19, 22, 24 on a first common carrier and a group of second stops 16, 18, 20, 25, 23, 21 on a second common support be fixed. Each of these two carriers is e.g. B. adjustable on both sides by linear drives, e.g. B. arranged pull up.

Furthermore, it is possible for the stops 16 to 25 to be spaced apart from one another and individually or in groups 17, 19, 22, 24; 16, 18, 20, 21, 23, 25 about a pivot axis 61 from a vertical position of a y-axis 60 through an angle alpha in the production direction C are arranged. The pivot axis 61 runs parallel to the z axis 62 of a spatial coordinate system (FIG. 4). As a result, the stops 16 to 25 can be pivoted with their lower edges 51 from an operating position B into a cleaning position A (FIG. 1).
The lower edges 51 can be cleaned manually or by means of brushes, rotatable brush rollers or air nozzles.

It is also conceivable for the stops 16
up to 25 around individual swivel axes, e.g. B. 63, 64, etc. from a vertical position parallel to the y-axis 60 to be pivotable by an angle beta. The pivot axes 63, 64 run axially parallel to the x-axis 66 of a spatial coordinate system (FIG. 4).

In addition, it is conceivable for the working cylinders 28 to be replaced by electric servomotors.

In another embodiment, the Cleaning device for the impact surfaces 26 of the Stops 16 to 25 on the respective bracket 46 a Brush be attached, the brushes and the Impact surfaces in a vertical plane of movement D are arranged frictionally displaceable to each other.

It is quite possible instead of one at a time fixed brush one with a known drive provided rotating brush as a cleaning device to be provided for each of the impact surfaces 26. Thus in addition to the linear movement D of the impact surfaces 26 a rotary movement of the brush is superimposed.

In a further embodiment variant, it is also possible as a cleaning device for each of the Impact surfaces 26 of the stops 16 to 25 on Bracket 46 attached, with the nozzle mouthpiece to arrange the impact surface 26 directed air nozzle. Each time you move the stops 16 to 25 in the Movement level D from operating position B to Cleaning position A is achieved by one of each Nozzle coming coming air flow each Impact surface 26 of possibly adhering paper residues 52 cleaned.

It is also quite possible below each one Scraper 48, i. H. between wipers 48 and Folding table top 6, 7 each have a pressure brush to attach. The pressure brushes press the printed product 10 in the gaps between the side by side Conveyor belts 12, 13 against the folding table top 6, 7 on.

In a second embodiment are also in a vertical movement plane D back and forth Stops 16 to 25 are provided, the impact surfaces 26th one each conveyed by the conveyor belts 12, 13 Stop print product 10. There is an end to this 53 each stop 16 to 25 in a plane B of the Top side 54 of the folding table top 6, 7.

In case of accumulation of paper remnants 52 or Paper particles and the like at the end of one or more Stops 16 to 25 pass through the ends 53 Folding table top 6, 7 or penetrate into the folding table top 6, 7 a. For this reason, the folding table top 6 has 7 from its top 54 to its bottom 57 extending breakthroughs 56, at least the Cross section of a stop 16 to 25 have.

After a first variant, the ends penetrate 53 of the stops 16 to 25 from an operating position or on the upper side 54 of the folding table 6, 7 level B to one on the underside 57 of the folding table 6, 7 level or Cleaning position E before (dashed in Fig. 3 shown). The remnants of paper on top, edges 58 of impact surfaces 26 Breakthroughs 56 stripped. By withdrawing the End 53 to above level B, the paper scraps fall down through the openings 56.

Instead of an upper edge 58, a plane B the top 54 of the folding table 6, 7 arranged, in scraper knife protruding every breakthrough Stripping of the scraps of paper may be provided.

According to a second embodiment, the ends penetrate 53 of the stops 16 to 25 - except 20 and 21 - from one Operating position or level B through level B up to one, e.g. B. at a distance of the thickness of a folding table 6th level or cleaning position F before (in Fig. 3 shown in dashed lines). The Paper scraps on one below level E. stripper-fixed scraper knife 59 stripped. It is also possible, only the stops 16 to 25 - except 20 and 21 - to level F and subsequently the Scraper knife 59 to start.

As shown above, a cleaning device can each Stop above, inside or below the Folding table top 6, 7 may be arranged.

According to a third and fourth design variant between levels E and F instead of one Scraper knife 59 either brushes or air nozzles provided on the impact surfaces 26 of the stops 16 to 25 act.

The drives can be designed as in first embodiment described. Additional However, there are advantages in that Not necessarily the stops 16 to cleaning purposes 25 must be lifted from the folding table 6, 7.

It is also quite possible to only use a single or several selected stops 16 to 25 of one Working position in a cleaning position spend.

The stops 16 to 25 each separate one from the other them forming storage space for scraps of paper, dust or the like of an empty large one lying behind them Storage space. If the stops 16 to 25 z. B. moved vertically up or down, so both Storage spaces combined and the front of the Attacks 16 to 25 scraps of paper, etc. get into the rear large storage space from where they can be dissipated. The whole can be during the Run happen because each stop is 16 to 25 individually moved independently of others or in groups can be that the spaces in front of and behind the attacks 16 to 25 connected without any disabilities come.

Reference list

1

Folding device

2nd

Folding roller

3rd

Folding roller

4th

Folding knife

5

-

6

Folding table top

7

Folding table top

8th

Folding gap (2, 3)

9

Long edge (6)

10th

Printed matter

11

Long edge (7)

12th

Conveyor belt, upper

13

Conveyor belt, lower

14

Tab (29)

15

Tab (29)

16

up to 25 stops

26

- impact surface (16 to 25)

27

Piston rod (28)

28

Working cylinders (16 to 25)

29

Carrier (28; 16 to 25)

30th

Bracket (27)

31

Bracket (29)

32

Bracket (29)

33

Slot (29)

34

Connection (28; 37)

35

-

36

Connection (28, 39)

37

Pipeline (34; 16, 18, 20, 21, 23, 25)

38

-

39

Pipeline (36; 16, 18, 20, 21, 23, 25)

40

-

41

Connection (28, 42)

42

Pipeline (41; 17, 19, 22, 24)

43

Connection (28, 44)

44

Pipeline (43; 17, 19, 22, 24)

45

-

46

Bracket (16 to 25)

47

Lower edge (29)

48

Doctor blades (16 to 25)

49

Lower edge (48)

50

-

51

Lower edge (16 to 25)

52

Rest of paper

53

End (16 to 25)

54

Top (6, 7)

55

-

56

Breakthrough (6, 7 for 16 to 25)

57

Bottom / 6, 7)

58

Top edge (56)

59

Scraper knife

60

y-axis coordinate system

61

Swivel axis (16 to 25)

62

z-axis coordinate system

63

Swivel axis

64

Swivel axis

65

-

66

x-axis coordinate system

A

Cleaning position

B

Operating position

C.

Production direction

D

Level (16 to 25)

E

level

F

level

n

Number (16 to 25)

alpha

Swivel angle

beta

Swivel angle

Claims (16)

1. Device for preventing production faults in an apparatus (1) for the further processing of printed products (10), such as signatures, individual sheets or the like, the printed products (10) being moved on a folding-table plate (6, 7) and finally stopped in each case by stops (16 to 25) having impact faces (26), it being possible for the stops (16 to 25) to be moved vertically in relation to the folding-table plate (6, 7), characterized in that a first group of stops (16; 18 ; 20; 21; 23; 25) is arranged in an operating. position B, and in that a second group of stops (17; 19; 22; 24) is arranged in a cleaning position (A) outside the operating position (B).
2. Device for preventing production faults in an apparatus (1) for the further processing of printed products (10), such as signatures, individual sheets or the like, the printed products (10) being moved on a folding-table plate (6, 7) and finally stopped in each case by stops (16 to 25) having impact faces (26), it being possible for the stops (16 to 25) to be moved vertically in relation to the folding-table plate (6, 7), characterized in that a cleaning device, which in each case acts on the impact face (26), is provided in the area of the folding-table plate (6, 7).
3. Device according to Claim 1, characterized in that the first group of stops (16; 18; 20; 21; 23; 25) and the second group of stops (17; 19; 22; 24) are arranged alternately in the operating position (B) and cleaning position (A).
4. Device according to Claims 1 or 2 [sic], characterized in that the printed products (10) can be moved by means of transport means (12, 13) which are spaced apart from one another and act parallel to one another.
5. Device according to Claims 1 or 2 [sic], characterized in that the stops (16 to 25) are arranged such that they can move to and fro perpendicular to the direction of motion (C) of the printed products (10).
6. Device according to Claims 1 or 2 [sic], characterized in that the stops (16 to 25) are arranged such they can pivot about a pivot axis (61), and in that the pivot axis (61) runs axially parallel to the z-axis (62) of a three-dimensional coordinate system (60, 62, 66).
7. Device according to Claims 1 or 2 [sic], characterized in that the stops (16 to 25) are arranged such that they can be pivoted about individual pivot axes (63; 64), and in that the pivot axes (63; 64) each run axially parallel to the x-axis (66) of a three-dimensional coordinate system (60, 62, 66).
8. Device according to Claim 2, characterized in that the cleaning device is arranged respectively above, within or below the folding-table plate (6, 7).
9. Device according to Claim 2, characterized in that the cleaning device is in each case designed as a wiper blade (48; 59) but acts against the impact face (26) of the stops (16 to 25).
10. Device according to Claim 2, characterized in that the cleaning device in each case consists of a brush that acts against the impact face (26) of the stops (16 to 25).
11. Device according to Claim 10, characterized in that the brush is designed to be rotatable.
12. Device according to Claim 2, characterized in that the cleaning device in each case consists of an air nozzle and in that an airstream, which can be switched on and off, from the air nozzle is directed towards the impact face (26).
13. Device according to Claims 1 or 2 [sic], characterized in that each stop (16 to 25) is assigned a linear drive (27; 28).
14. Device according to Claim 1, characterized in that each group of stops (17, 19, 22, 24; 16, 18, 20, 21, 23, 25) is assigned at least one linear drive (27; 28).
15. Device according to Claims 13 or [sic] 14, characterized in that the linear drive (28) consists of a pneumatic piston/cylinder unit (27; 28).
16. Device according to Claims 13 or [sic] 14, characterized in that the linear drive (27; 28) consists of an electric actuating motor.

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