EP0798252B1 - Device for automatically changing size in the delivery device of a rotary printing machine - Google Patents

Description

The invention relates to a device for the format-dependent setting of the Section length in the delivery area of a rotary printing press, with a Device for non-stop operation and one in the horizontal direction displaceable structure on which a device braking the sheet is included, according to the preamble of claim 1.

Such a device is described in GB 2 098 179 A. At this The device is a slidable structure with a traverse in the horizontal direction and none at all the formation of the Auxiliary stack supporting release agent provided.

From the prior art DE 39 37 944 C is also already a sheet delivery for a sheet-fed press. It will be a safety gear for the sheet leading edge is described in the sheet delivery of a sheet printing machine, with the fold-away stacking stops for the leading edge of the up to one Sheet stack promoted sheet and briefly to the sheet plane from the Trailing fingers insertable over the sheet stack for formation of an auxiliary stack and also corresponding drive elements are provided are that the folding and folding back of the stacking stops by one Swivel shaft aligned parallel to the arc plane depending on the Insert or retract the catch fingers. Separate motor drives are preferred for this movement Pneumatic cylinder, for the movement of the stacking stops and the catch fingers one of the two machine sides of the boom arranged and act transversely drive shafts mounted coaxially to each other to the conveying direction of the sheet, wherein transmission elements for the rotational movement of the one drive shaft on the Swivel shaft of the stacking stops on one side of the machine and Transmission elements for the rotary movement of the other drive shaft to linear movably guided catch fingers arranged on the other side of the machine and Switching elements for the individual drive of both drive shafts and for the corresponding drive are provided depending on each other.

DE 39 41 993 C also relates to a sheet feeder with auxiliary stacks for non-stop operation. A sheet feeder with auxiliary stacking device for non-stop operation, in which the auxiliary stack resting on supporting bars or a carrying rake with the detachable main stack is combined, points in the front area of the auxiliary stack several recording fingers distributed over the width of the sheet, which thus in the stack area are movable, that the front edge of the auxiliary stack at Do not remove the auxiliary stack pad by the thickness of the auxiliary stack pad sinks.

DE 42 17 816 A also relates to a device for continuous delivery flat printing sections. The solution concerns a device for continuous Delivery of flat printed products, in particular those separated from a material web Sections, the means of separation into a main stack and an auxiliary stack having. A conveyor for a main stack is also provided. A retractable auxiliary stacking unit includes both remote controlled, flexible, perpendicular to Transport direction of sections rotating means as well as remote-controlled, Suspension means that can be horizontally retracted and extended to separate a continuous flow of sections into a main stack and one Auxiliary pile.

The solutions from the prior art solve the problem of separation from sheet stack to auxiliary and main stack on the feeder or delivery side of one Rotary printing machine, however, can be individually adjusted in format For example, component repercussions on other components largely ignored in the delivery of a rotary printing press.

The present invention is in view of the state of the art Technology based the task of a sheet delivery for Rotary presses to improve so that in the future Adjustment operations on individual for the sheet delivery necessary components when changing the sheet format can be omitted.

According to the invention, this object is achieved through the features of Claim 1 solved.

The advantages achievable with the solution according to the invention are diverse in nature. By adjusting the central Frame structure on which the for precise edge delivery necessary components can be included At the push of a button an exact approach to a new position of the Frame structure for a new sheet format to be interpreted to reach. Because the auxiliary components at defined intervals are arranged to each other on the frame structure, a Adjusting this relative to each other is superfluous as it automatically with the central frame structure in its correct new operating position can be moved.

In a further embodiment of the basis of the invention The central frame structure can be thought of using Move guide means on a horizontal guide become. In addition to rollers on a profiled rail run, a prism guide can also be provided. This prismatic guide can be used with or without Needle cages or ball bushings or the like executed his.

The central frame structure is by means of a drive motor, the on a traction device attached to the frame structure acts horizontally. The traction means can Link chain, a roller chain, a rack guide or serrated straps or the like.

By means of limit switch surfaces provided on the frame structure and with these cooperating limit switches, the respective end position of the central frame structure - i.e. whether it in position for maximum or minimum interpretable format is set - be queried. Intermediate positions between these two extreme positions are just through Calculations of the necessary number of revolutions of the Motor / gear unit depending on a reference position possible.

The integration of those necessary for non-stop operation Release agents for stack separation in main and Auxiliary stacks create an enormous amount of space for the printer and improves the accessibility of the Sheet stack. In addition, the stack is now separated in the direction of the paper and makes the insertion of one Stacking rake or the like contrary to Paper direction unnecessary. The accompanying Risk of damage to those already laid out on the stack Bow is now banned.

There is also a bow brake on the central frame structure can also be included Format adjustments each in their for the new format optimal effective position driven.

Further embodiments of the present invention are can be found in the further subclaims.

The invention is based on a drawing in Details explained:

Fig. 1

eine Seitenansicht der an einem Führungsprofil verschiebbaren Seitenteile, die mittels eines Zugmittels verfahrbar sind,

Fig. 2

eine perspektivische Ansicht des Führungsprofiles mit entsprechend geformten Führungsmitteln,

Fig. 3

eine perspektivische Anordnung der mittels Traversen miteinander verbundenen Seitenteile mit in dieser integrierten Trennbandführung,

Fig. 4

eine Darstellung eines schwenkbaren Anschlages im Schnitt,

Fig. 5

eine Vorderansicht der Traverse, an der die schwenkbaren Anschläge aufgenommen sind, wobei zwei Stellzylinder vorgesehen sind und

Fig. 6, 7

eine alternative Betätigungsmöglichkeit der Anschläge mittels Koppelstange und einem Stellzylinder.

Show it

Fig. 1

2 shows a side view of the side parts which can be moved on a guide profile and can be moved by means of a traction means,

Fig. 2

a perspective view of the guide profile with appropriately shaped guide means,

Fig. 3

3 shows a perspective arrangement of the side parts connected to one another by means of cross members, with a separating tape guide integrated in this,

Fig. 4

a representation of a pivotable stop in section,

Fig. 5

a front view of the crossbar on which the pivotable stops are received, two actuating cylinders are provided and

6, 7

an alternative possibility of actuating the stops by means of a coupling rod and an actuating cylinder.

Fig. 1 shows the side view of the on a guide profile sliding side panels, which by means of a Traction device arrangement movable in the horizontal direction are arranged.

On one side part of a sheet boom one Rotary printing machine, a drive motor 1 is added, the via a gear 2 with self-locking on a gear 3 acts. The transmission 2 can for example consist of a Worm / worm gear pair exist. The drive through the Drive motor 1 acts from gear 4 on a deflection wheel 6, which, for example, as a sprocket for a traction device can be trained. The traction means 5 - here in shape a roller chain - runs over both pulleys 6, 7 and is with a front or a rear Traction device lock 8, 9 on side parts 10, 11 of a central Articulated frame structure, of which only that in Fig. 1 Side part 10 is shown.

The side parts 10, 11 are a cross member 27 and a Profile 24 (see Fig. 3) and a cross member 32 with each other connected and form the sliding central Frame structure. On the side parts 10, 11 are approximately in the Height of the guide means 17 and 18, front and rear Limit switch surfaces 12, 13 formed. These are related on the vertical component edges of the Side panels 10, 11 slightly ahead and work at the Horizontal shift of the central frame structure with Limit switches 14 and 15 together, one on both sides horizontal guide 19 each arranged at the ends are. When the respective end positions are reached, the printer can in the fully automatic operation of the Rotary printing machine the respective end position of the central frame structure are displayed.

The between the by the two limit switches 14 and 15th end positions that can be displayed lie - depending from sheet format - horizontally accessible intermediate positions the frame structure can be set by rotary encoders on the drive motor 1 detected and queried by the printer, so that this if he the delivery area of the rotary printing press is not in the Field of view, at all times about the setting of the central Frame structure 10, 11, 24, 27, 32 is in the picture.

In the embodiment shown in Fig. 1 are the Side parts 10 and 11 - not shown here - with the help upper and lower guide means 17, 18 on one horizontal guide 19 added. Instead of here roller solution shown, it is also possible, however Side parts 10, 11 largely in a prismatic guide to lead free of play. This prismatic guide can be used Needle cages or alternatively without needle cages be equipped. An alternative to using Needle cages represent ball bushings The components shown can have the side parts 10, 11 largely horizontally without play, where by a cross member 27 (see Fig. 3), a cross member 32 and a profile 24 creates a rigid frame structure that Record forces and moments in all spatial directions can

The double arrow provided with reference number 20 marks the Horizontal displacement of the central frame structure using Reference number 21 denotes the maximum movable horizontal displacement of the Frame structure 10, 11, 24, 27, 32 on the horizontal Tour 19.

In the lower area of the side parts 10, 11 is a Holding element 16 is provided for internals. On this can for example a device for braking the sheet to be interpreted.

Fig. 2 shows a perspective view of the horizontal Guide 19, which is equipped with a profile 22. Accordingly, the guide means 17, 18 to one Profiling 22 complementary configuration, making it enclose the guide 19 laterally, which is the accuracy and the stability of the leadership benefits. In the area below 2 is the holding element 16 for additional internals shown.

Fig. 3 shows a perspective view of the means Trusses with interconnected side parts Integrated separator belt guide for non-stop operation.

The frame structure, consisting of side parts 10 and 11 as well as the trusses 27 and 32, extends across the width the rotary printing press and is in its dimensioning to the width of the maximum processable sheet format designed. On the side parts 10 and 11 are the Limit switch surfaces 12 and 13 can be seen. The one with these cooperating limit switches 14 and 15 are shown in FIG. 3 not shown. The are with the horizontal guide 19 working together Guide means - here rollers 17, 18 - shown. On provided below the frame structure 10, 11, 24, 27, 32 Bearing plates 30 are attached to rear edge stops 26 are in a laterally inclined position. At the back There is an end of the holding element 16 for internals On / off mechanism for a flexible cover 28 that the in the process of the frame structure between this and the End of the sheet guiding line under the dryer of the Rotary press overlaps the space that becomes available. The The cover 28 has a rolling / unrolling mechanism Return spring applied so that the cover 28 in each Operating position of the frame structure 10, 11, 27, 32 optimal is taut.

A separating tape 25 is in the frame structure 10, 11, 27, 32 integrated. The separating belt 25 comprises a narrow one Area 25.1 in the position shown in FIG. 3 below the lower profile 24 is set. Parallel to the side part 11 extends the widened in the state shown in Fig. 3 executed separating edge 25.2 of the separating belt 25, the Transitional area between the separating edge 25.2 and the narrow area 25.1 is trapezoidal. So could the trapezoidal area with a coating be provided to prevent damage to the bow. Also would be thin coatings clamped on the separating edge 25.2 conceivable to damage the sheet to be laid out avoid. The separating tape 25 is in the Frame structure 10, 11, 27 and 32 integrated four Deflection rollers 40 out. It allows a separation of main and Auxiliary stacks in non-stop operation, with such Rotary printing machines equipped for non-stop operation are and will be integrated into the cross member 32 rodless pneumatic cylinder moves. Since that Release tape 25 at the rear edge of the developing Sheet stack is arranged, i.e. in the paper running direction, there is no need to insert a stacking rake against the direction of paper travel. This will make the Accessibility of the stack improves and freedom of movement the printer is not restricted.

In addition, a. On the frame structure 10, 11, 27, 32 Device 29 for braking sheets to be laid out be arranged. This would be stored on the traverse 27 and laterally limited by the holding elements 16 for internals. However, the device for braking sheets is itself not content of the present patent application.

By arranging the stops 26 at the correct distance from Device for braking sheet 29 is one Edge-clean stack formation even after a format change given. When inserting the separating edge 25.2 for stack separation the stops 26 are pivoted upwards and allow thus retracting the separating edge 25.2 (see also FIG. 5).

The automatic horizontal adjustment of the Frame structure for format changes, i.e. when printing of sheets of different dimensions at one Job switching, removes the printer from a number of Adjustment and adjustment work, as they are tool-free Expires. Units such as the device 29 for Braking the bows are automatically adjusted with it does not require any relative adjustments of the central Frame structure 10, 11, 27 and 32 relative to the device for Braking the bow 29. Furthermore, do not worry about one Adjustment of the stack separator to be carried there this is integrated in the central frame structure and at their displacement automatically moves. Also the Readjustment of the trailing edge stops 26 after Format settings can be omitted. Your distance to Device 29 for braking the sheets always remains the same and requires no correction. After the frame structure in If a new position has been moved, the stops 26 in the correct position so that adjustment and set-up time is saved and it is faster to train a edge-accurate sheet stack comes.

With the adjustment of the central frame structure 10, 11, 27 and 32 to a new format will be one for any non-stop operation existing release agent for Main and auxiliary stack formation in the correct position adjusted, as well as rear edge stops and the Bow brake. The sheet brake covers the sheet conveying plane distributed, spaced-apart brake bands 31 as well as individual ones extending alongside the brake bands 31 Bridges 30.

4 is an illustration of a pivotable stop shown in cross section.

On the cross member 24, which comprises a longitudinal groove 24.1, are in the longitudinal groove 24.1 across the width of the cross member 24 several pivotable stops 26 distributed, one of which here in Cross section is shown.

The stops 26 are by means of a common Actuating means, such as a Bowden cable or one Steel cable 38 adjusted by two pneumatic cylinders 37, the on the sides of the frame structure 10, 11, 24, 27, 32 are included. Are on the Bowden cable or steel cable 38 several pins, for example by means of set screws 39, attached. The pins engage in longitudinal slots 35 Stops 26, so that this when the Bowden cable or steel cable 38 a pivoting movement around the Axis 34 is impressed. In cross section according to FIG. 4 also shown how the narrow area of the Release tape 25.1 is guided in the cross member 24 and the Release tape 25 behind a pulley 40 in front of the Side part 11 extends in the vertical direction.

A support plate 36 is provided below the cross member 24, what the separating edge 25.2 supports if this by the weight of the bow during the Auxiliary stack construction is pressed down. Above the Traverse 24, a baffle 33 is arranged.

Fig. 5 shows a front view of the cross member 24 of the displaceable frame structure 10, 11, 24, 27, 32 with a pivoted stop 26, the pivoted up Position 26.1 is shown in dash-dot lines. Exemplary only a stop 26 is shown here, but are of course, several of these stops 26 on the Traverse 24 can be installed. The one guided in the longitudinal groove 24.1 Bowden cable 38 is through the actuating cylinder 37 in the groove 24.1 movable. In this view, the set screw is 39 recognizable in the longitudinal slot 35 of the stop 26th engages and pivots this in position 26.1. Below the cross member 24, the support plate 36 is shown in Fig. 5, which supports the separating tape 24. On one side wall a pneumatic distributor 41 added to the still is received.

Figures 6 and 7 provide an alternative solution Actuation of the stops 26.

By means of a displaceable by an actuating cylinder 37 Push rod 43, which is connected to a pivot lever 44, a thrust element 47 becomes parallel on its guide surface 51 postponed. The pivot lever 44 is about an axis 45 and both with the push rod 43 and on a linkage 46 connected to the thrust element 47. On the bolt 49 is one Guide 48 slidably mounted as a stop Stroke limitation of a rod 50 specifies. The lifting movement transmitting unit coupling rod 42 comprises the components Push rod 43, pivot lever 44, push element 47 and the rod 50 fastened thereon by means of the pushing element 47 attached rod 50 can be the individual to be pivoted Stops 26 are simultaneously pivoted without delay, for which only an actuating cylinder 37 is required.

The variant according to FIGS. 6 and 7 offers the advantage an instantaneous one operating in different levels provide direct actuation of the stops 26.

The actuating cylinder 37 according to the actuation variants in 4, 5, 6 and 7 are on a pneumatic distributor 41 connected, the actuating cylinder 37 by means of a bistable valve and a monostable valve. With the monostable valve, the stops 26 of Working position swung to rest position (position 26.1), so that the separating tape can move into the working position. The bistable valve has the advantage that it is Stops 26 moved down into their operative position or can vent the actuating cylinder 37 again. When a For example, the pallet is raised again and sent to the abuts pivoted down stops 26, take them by the ventilation of the actuating cylinder 37 no damage and pivot into their horizontal position 26.1 according to FIG. 4. On the other hand, the stops 26 can also be pressed at the push of a button defined by the monostable valve in position 26.1 put back.

Parts list

1

Drive motor

2nd

transmission

3rd

gear

4th

gear

5

Traction means

6

Deflection wheel

7

Deflection wheel

8th

front traction mechanism lock

9

rear traction mechanism lock

10th

Side panel

11

Side panel

12th

Limit switch area (front)

13

Limit switch area (rear)

14

Limit switch

15

Limit switch

16

Holding element for internals

17th

upper guide means

18th

lower guide means

19th

horizontal guidance

20th

Direction of travel

21

maximum travel distance

22

Profiling

23

Rounding

24th

profile

24.1

Longitudinal groove

25th

Release tape

25.1

narrow area

25.2

Separating edge

26

attacks

27

traverse

28

flexible cover

29

Bow brake

30th

Bearing plates

31

Brake bands

32

traverse

33

Leitbelch

34

Swivel axis

35

slot

36

Gusset

37

cylinder

38

Bowden cable

39

Grub screws

40

Deflection wheel

41

Pneumatic distributor

42

Coupling rod

43

Push rod

44

Swivel lever

45

axis

46

Articulation

47

Thrust element

48

guide

49

bolt

50

Rod

51

Leadership area

Claims (16)

1. Device for the format-dependent adjustment of the cut-off length in the delivery region of a rotary printing press, comprising a device for non-stop operation and a horizontally displaceable structure to which a device (29) for braking the sheets is mounted,
   characterized in
   that the structure is a frame structure (10, 11, 24, 27, 30, 32) into which a separating belt (25, 25.1, 25.2) revolving perpendicularly to the sheet transport direction is integrated, and that stops (26) for the trailing edge of the sheets are arranged at the frame structure (10, 11, 24, 27, 30, 32).
2. Device according to Claim 1,
   characterized in
   that the frame structure (10, 11, 24, 27, 30, 32) runs at a horizontal guide (19) by means of guide means (17, 18).
3. Device according to Claim 2,
   characterized in
   that the guide means (17, 18) are rollers.
4. Device according to Claim 2,
   characterized in
   that the guide (19) comprises a profile (22).
5. Device according to Claim 2,
   characterized in
   that the guide means (17, 18) are a prismatic guide.
6. Device according to Claim 5,
   characterized in
   that the guide means (17, 18) comprise needle cages.
7. Device according to Claim 1,
   characterized in
   that the stops (26) for the trailing edge of the sheets are swivellably arranged at the frame structure (10, 11, 24, 27, 30, 32).
8. Device according to Claim 1,
   characterized in
   that the stops (26) at the traverse (24) are connected to each other by a common actuating means (38, 42).
9. Device according to Claim 8,
   characterized in
   that the common actuating means is a Bowden wire (38).
10. Device according to Claim 8,
    characterized in
    that the common actuating means is a connecting rod (42).
11. Device according to Claim 8,
    characterized in
    that the common actuating means (38, 42) is guided in a longitudinal groove (24.1) of the traverse (24).
12. Device according to Claim 8,
    characterized in
    that pins (39) are provided at the common actuating means (38, 42), the pins engaging with the openings (35) of the stops (26).
13. Device according to Claim 8,
    characterized in
    that the common actuating means (38, 42) is assigned one or two actuating cylinders (37) which is activated via a bistable valve and a monostable valve.
14. Device according to Claim 1,
    characterized in
    that, within the frame structure (10, 11, 24, 27, 30, 32), the separating belt (25) revolves around deflecting rollers.
15. Device according to Claim 1,
    characterized in
    that lateral parts (10, 11) of the frame structure (10, 11, 24, 27, 30, 32) comprise protrusions (12, 13) acting as limit switch surfaces.
16. Device according to Claim 1,
    characterized in
    that the frame structure (10, 11, 24, 27, 30, 32) is engageable with the sheet pile in the sheet running direction.

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