EP1442880B1 - Sheet processing device - Google Patents

Description

The present invention relates to a sheet-processing machine, in particular sheet-fed printing machine, with at least one printing or coating unit, a sheet conveying module and a printed and / or coated sheet in a stacking space to a delivery stack depositing boom according to the preamble of claim 1.

Sheet-fed presses having cantilevers whose stacking capacity is adapted to a particular production specificity are well known.
A distinction is usually made within a series between printing press configurations with so-called normal staple booms and high-pile jibs. While the former are preferably used when printing on paper, the latter are used in particular in the printing of cardboard sheets that can be stacked due to their low density to high stacks, the lower sheets of the stack are exposed to only relatively low compressive forces.
The aforementioned cantilever designs are similar in their basic structure. The height of the frame walls and the length of the guideways of the circulating sheet transport systems, however, differs in the two designs.
The disadvantage is that more boom types are needed and that to increase the stacking capacity, the entire boom must always be replaced.

According to another known solution, the entire printing machine including the feeder and the printing units is placed on a pedestal, so that below the boom enough space for receiving a boom stack large stack height arises.
The disadvantage of this solution is that the formation of a pedestal for the entire machine is very costly, especially since the increased aggregates must be made accessible by an additional gallery extending along the printing press.

It is also known to arrange the feeder and the printing units of a printing machine in the foundation plane and provide only in the region of the delivery pile below the foundation level a pit into which the delivery pile can be sunk. This proves in connection with the removal of the delivery pile usually expensive and requires a more in-depth arrangement of the corresponding disposal facilities. The formation of the pit is also often not possible, which is always the case, for example, when the printing press is not housed in the lowest floor of a building.

From US 5,873,309 a printing press is known, between which in the sheet conveying direction last printing unit and the boom, a device for surface treatment with two modules for sheet conveying is arranged.
The modules are assigned drying facilities.

Object of the present invention is to provide a sheet-processing machine that can be used flexibly and at ground level installation without constructive change of the boom either for normal stacking or high-stack operation.

According to the invention this object is achieved with a sheet-processing machine of the type mentioned, having the features of claim 1.

Advantageous embodiments are the subject of the dependent claims.

The sheet-processing machine according to the invention has the advantage that it can be formed in a simple manner only by interposing one or more sheet transport modules with staggered stacking capacity. This comes into play in the initial installation of a printing press and also allows their subsequent conversion in the sense of reducing / increasing the stacking capacity of the boom. When refitting the structurally unchanged boom is used, which must be arranged only in one plane with the other aggregates or the other hand elevated. For this purpose, a frame elevation can be provided below the boom according to a development of the invention. According to another embodiment, the boom is designed to adjust height to the level of sheet transfer.
Another advantage of the invention is that it also allows an increase in the stacking capacity of the boom in the cases where no pit is formed for receiving the delivery pile. The achievable stacking capacity is not dictated by the design of the cantilever in these cases and can also go beyond the stacking capacity of a known Hochstapelauslegers if necessary. This is made possible by the arrangement of several sheet conveying modules in front of the boom.

Another advantage is that with the arrangement of the sheet conveying module space for the cultivation of various additional devices is created.

The sheet-processing machine is constructed in the manner of a modular system, so that their individual units, such as printing / coating units and one or more sheet conveying modules can be connected in arbitrary order with each other, as far as this makes sense technologically. For this purpose, appropriate interfaces are provided on all aggregates, which are required for a continuous sheet travel and in particular a drive and tax enable technical coupling. Accordingly, the sheet conveying module can also be arranged directly after the feeder or between two printing / coating units.
In the assembled state, the connecting lines of the centers of cooperating, in the sheet running direction successively arranged sheet-guiding cylinders of different units are inclined at the same angle (cylinder angle) to the horizontal.
This also applies when the sheet transfer between a sheet-guiding cylinder and a chain conveyor system, in which case the center of the circular path, which describe the gripper carriage of the chain conveyor system in the deflection, takes the place of the cylinder center.

According to an advantageous development of the invention, the sheet conveying module comprises a sheet conveying device and a first sheet guiding cylinder arranged downstream of this in the sheet running direction. The sheet conveying device is preferably designed as a sheet guiding drum or as a chain conveyor system. In order to adapt to the design of the printing press, the sheet conveying module may also comprise three sheet guiding cylinders or sheet guiding drums arranged one behind the other.

According to one embodiment of the invention, the boom comprises a transport chain conveyor system, which is arranged downstream of a second sheet guiding cylinder in the sheet running direction.

According to another development, the sheet conveying module is assigned a drying device, a powdering device, a suction device, a punching device, a perforating device, a numbering device, a cutting device, a quality monitoring device or an image inspection device or any combination of a plurality of said devices.

Fig. 1

eine Bogendruckmaschine, deren Ausleger direkt mit einem Druck-/Lackwerk verbunden ist;

Fig. 2

eine Bogendruckmaschine, deren Ausleger unter Zwischenschaltung eines Bogenfördermoduls mit einem Druck-/Lackwerk verbunden ist;

Fig. 3

eine Bogendruckmaschine mit einem Ausleger, der ein Kettenfördersystem mit vorgelagertem Bogenführungszylinder und ein Auslagedruckwerk/-lackwerk umfasst und

Fig. 4

eine Bogendruckmaschine, deren Ausleger ein Auslagedruckwerk/-lackwerk umfasst und unter Zwischenschaltung eines Bogenfördermoduls mit einem Druck-/Lackwerk verbunden ist.

Reference to an embodiment, the following invention will be explained in more detail. In the accompanying drawings shows:

Fig. 1

a sheet-fed press, the boom is connected directly to a printing / coating unit;

Fig. 2

a sheet-fed printing machine whose boom is connected with the interposition of a sheet conveying module with a printing / coating unit;

Fig. 3

a sheet-fed press with a boom, which comprises a chain conveyor system with upstream sheet guiding cylinder and a delivery printing unit / -lackwerk and

Fig. 4

a sheet-fed printing machine whose boom comprises a delivery printing unit / -lackwerk and is connected with the interposition of a sheet conveying module with a printing / coating unit.

The sheet-fed printing machine shown in Fig. 1 is modular in aggregate design. It comprises a feeder, not shown, a tray of printed and / or coated sheet serving boom 5 and several arranged between feeder and boom 5 printing units 1. The printing units 1 have a cooperating on the blanket cylinder 4 with the printing cylinder 2 printing form cylinder 3 and a in Sheet conveying direction to this subordinate further sheet-guiding cylinder and bring each a printing ink on the isolated from the investor sheet. The last in sheet conveying direction printing unit 1 is directly connected to the boom 5. The boom 5 is constructed in a known manner and has paired front and rear sprockets 6, on the gripper carriage 8 carrying conveyor chains 10 circulate. Below the rear sprocket 6 extends the stacking space in which a stack carrier 20 is arranged, on which the printed and / or painted sheets are stacked to form a delivery stack 9. The stack carrier 20 is supported by Stapelhubketten 7, which gradually lower it as the boom stack increases during the continuous printing until the maximum stack height is reached. The feeder, the printing units 1 and the boom 5 are arranged in a mounting plane, so that the sheets are passed between adjacent sheet-guiding cylinders different printing units 1 and from the last in sheet conveying direction printing unit 1 to the gripper carriage 8 of the boom 5 on a first level 17.
The available in this arrangement for receiving the delivery pile 9 stacking space is usually sufficient for the processing of paper, which can be stacked only to stacks with comparatively low stack height to limit the compressive stress of the lower sheet.

Fig. 2 shows the sheet-fed printing machine in a configuration for the processing of cardboard, in which the stacking space in the boom 5 and thus also the stacking capacity of the delivery pile 9 is increased.

ist dabei gleich dem Zylinderwinkel

bei der Bogenübergabe vom Bogenfördermodul 12 an ein nachgeordnetes Aggregat. Im Vergleich zu der Stellung der bogenführenden Zylinder innerhalb der Druckwerke 1, ist der erste Bogenführungszylinder 14 um den Winkel b verdreht gegenüber der als Bogenführungstrommel ausgebildeten Bogenfördereinrichtung 13 angeordnet.Between the last in the sheet conveying direction printing unit 1 and the boom 5 Bogefördermodul 12 is arranged. This comprises a trained as a sheet guiding drum sheet conveying device 13, which is a first sheet guiding cylinder 14 downstream.
The sheet guiding drum takes over the sheet from a sheet-guiding cylinder of its upstream printing unit 1 at a first level 17th
If the boom 5, as shown in Figure 1, connected directly to a printing unit 1, takes place on the first level 17, the sheet transfer between the sheet-guiding cylinder of the printing unit 1 and the gripper carriage. 8
The sheet conveying module 12 transfers the sheets to a first higher second level 18, where the transfer to the gripper carriages 8 of the boom 5 takes place, which is arranged to adapt to the second level 18 increased by increasing the stack space by the amount X. For this purpose, a frame elevation 16 is provided, which can be arranged below the boom 5.
The decisive in the sheet transfer to the sheet conveying module 12 cylinder angle

is equal to the cylinder angle

at the sheet transfer from sheet conveying module 12 to a downstream unit. Compared to the position of the sheet-guiding cylinders within the printing units 1, the first sheet guiding cylinder 14 is rotated by the angle b relative to the sheet conveying device 13 formed as a sheet guiding drum.

3 and 4 show an embodiment of the invention using the example of a sheet-fed press whose jib 5 comprises a second sheet guiding cylinder 15 and a delivery printing / coating unit 21, the impression cylinder of which forms the second sheet guiding cylinder 15. The cantilever 5 upstream printing / coating units 1 each have a printing cylinder 2, which is followed by a sheet-guiding cylinder. The boom 5 is designed either directly (Fig. 3) or with the interposition of the sheet conveying module 12 (Fig. 4) connected to a printing / coating unit 1 in the manner described.

The sheet conveying module 12 are associated with a plurality of dryers 11, which are designed as radiation dryer and hot air dryer.

reference numeral

1

Printing unit / coating unit

2

pressure cylinder

3

Plate cylinder

4

Blanket cylinder

5

boom

6

Sprocket

7

Stapelhubkette

8th

gripper carriages

9

delivery pile

10

conveyor chain

11

dryer

12

Sheet conveying module

13

Sheet conveyor

14

first sheet guiding cylinder

15

second sheet guiding cylinder

16

Higher chassis

17

first level

18

second level

19

20

stack carrier

21

Display printing / coating unit

Claims (9)

1. Modular sheet-processing machine, particularly sheet printing machines, which comprises at least one printing mechanism or coating mechanism (1), a sheet conveying module (12) and a delivery unit (5), which deposits printed and/or coated sheets in a stack space, with a chainwheel (6), wherein the delivery unit (5) is connectible with the at least one printing mechanism or coating mechanism (1) in such a manner that the at least one printing mechanism or coating mechanism (1) transfers the sheets at a first level (17) to the delivery unit (5) connected therewith, wherein the sheet conveying module (12) can be selectably connected between the delivery unit (5) and the printing mechanism or coating mechanism (1) and wherein in the combined state the connecting lines of mutually cooperating sheet-conducting cylinders, which are arranged in succession in sheet running direction, of the printing mechanisms or coating mechanisms (1) and between successively arranged sheet-conducting cylinders of the printing mechanisms or coating mechanisms (1) and the chainwheel (6) are inclined at the same angle (α) relative to the horizontal, characterised in that the sheet conveying module (12) comprises a sheet conveying device (13) and a sheet guiding cylinder (14), the connecting line of which is turned through a (second) angle (β) relative to the said sheet conveying device (13) in such a manner that the sheet can be transferred from the sheet conveying module (12) to a second level (18) higher relative to the first level and can be handed over at an angle (α) to the delivery unit (5), which can be arranged to be elevated for matching to the second level (18).
2. Sheet-processing machine according to claim 1, characterised in that the sheet conveying module (12) comprises a sheet conveying device (13), downstream of which a first sheet guide cylinder (14) is arranged in sheet conveying direction.
3. Sheet-processing machine according to claim 2, characterised in that the sheet conveying device (13) is constructed as a sheet guide drum.
4. Sheet-processing machine according to claim 2, characterised in that a first chain conveyor system is provided as sheet conveying device (13).
5. Sheet-processing machine according to claim 1, characterised in that the delivery unit (5) comprises a second sheet guide cylinder (15), downstream of which a second chain conveyor system is arranged in sheet running direction.
6. Sheet-processing machine according to claim 5, characterised in that a delivery printing mechanism / coating mechanism (21) is provided as second sheet guide cylinder (15) of the printing cylinders.
7. Sheet-processing machine according to one of the preceding claims, characterised in that a drying device, a powder device, a suction device, a punching device, a perforating device, a numbering device, a cutting device, a grooving device or a quality monitoring device is associated with the sheet conveying module (12)
8. Sheet-processing machine according to one of the preceding claims, characterised in that a frame elevating means (16) able to be arranged below the delivery unit is provided for matching to the second level (18).
9. Sheet-processing machine according to one of the preceding claims, characterised in that the delivery unit (5) is constructed to be adjustable in height for matching to the first or second level (17, 18).

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