EP1764329B1 - Sheet printing machine - Google Patents

Abstract

The sheet-fed printing press, printing on one or both sides of the sheets, has a paper supply in the form of a web (B) from a roll at a roll stand or exchange unit (1), cut into a flow of separate sheets (S) by a lateral cutter (3). The web can be printed on one side, for printing on the other, or it is blank for printing on one or both sides.

Description

The invention relates to a method to the preamble of claim 1 or claim 2. Furthermore, the invention relates to a device according to the preamble of claim. 7

It is known that sheet-like substrates for sheet-processing machines can be subdivided arcuately by means of a cross cutter and the sheet processing machine can be supplied.

Such machines are for example off DE-U-20008732 or EP-A-1 535 872 known.

Sheet-processing machines process sheet material cut into sheets, which is then stacked in a feeder and occasionally transported through the machine in sheets. In this case, sheet-fed printing presses, stamping machines, laminating machines, painting machines, sorting and collating machines or also devices for carrying out a quality control or other similar further processing machines come into question.

Cross-cutters have hitherto been used for the division of unprinted web-like substrates in connection with stacking devices for the production of raw sheet stacks or in conjunction with sheet-fed rotary printing machines for the direct supply of sheets to be printed.

A disadvantage of the sheet-fed rotary printing press is that it has a lower performance for a number of production processes and is generally fixed to the sheet material provided on a stack.

Another disadvantage is that the manufacturing methods mentioned above are not feasible or only with great effort within a printing press and usually require complicated devices for simple print products.

The object of the invention is therefore to make available a further processing option for cost-effective printing processes in a simple manner.

The solution of this task is inventively according to the features of claims 1, 2 and 7. Advantageous embodiments will become apparent from the dependent claims.

For the processing of substrates in a wide variety of formats, it is intended to wind the substrates in web form and to leave them for the preparation of the processing. If processing is to be performed, the product rolls are placed in a cross cutter. The cross cutter is optionally associated with a sheet processing machine with a finishing device.
The processing takes place in a printing station for the top and the bottom of the substrate. This results in a compact and cost-effective system for the production of simple, double-sided printed products.

The specimens can be edited directly after cutting. For example, it is possible to use the following application methods: painting, laminating, laminating, stamping, embossing, creasing, folding, sorting, collating, stapling, reaming, quality control.

Advantageously, the cross cutter may be provided with an additional shingling station, such that the sheets to be applied in the sheet processing machine can be conveyed at the correct speed and distance from one another.

An advantage of the device is that the substrate can be processed directly from stock rolls in sheet processing machines on a simple application level.
If necessary, additional coating processes may additionally be considered here. Furthermore, the printing material can also be finished by embossing or cutting finishing processes.

Further advantageous embodiments of the invention will become apparent from the dependent claims.

In the following the invention will be explained in more detail by way of example with reference to drawings.

Fig.1

eine diagrammatische Darstellung einer ersten Ausführungsform der erfinderischen Vorrichtung,

Fig. 2

eine Variante der erfinderischen Vorrichtung mit separatem Bogenanleger, und

Fig. 3

eine Variante der erfinderischen Vorrichtung mit zusätzlichem Schuppaggregat.

Hereby show:

Fig.1

a diagrammatic representation of a first embodiment of the inventive device,

Fig. 2

a variant of the inventive device with a separate sheet feeder, and

Fig. 3

a variant of the inventive device with additional shingling unit.

In FIG. 1 is a reel changer 1 a web guide unit 2 downstream. This leads the printing substrate B to a cross cutter 3. In the cross cutter 3 sheets are cut from the printing substrate B and ordered to a scale flow S.

Within the sheet flow S, a so-called flake distance is generated for the arc, which refers to the distance of the leading edges, lying in the scale flow S sheet. This scale spacing depends on the requirements of further processing.

For this purpose, the cross cutter 3 contains a cutting unit 9 and a shingling station 8, which can generate a shed spacing that is specific or variable for the cross cutter. The emerging from the cross cutter 3 Schuppenstrom S of sheet is further conveyed via a conveyor table 4 in a sheet feeding 5 a sheet processing machine.

From the speed ratio of the promotion of the sheet flow S on the conveyor table 4 and the cycle of the discharge through the sheet feeding device 5 in the sheet-processing machine derives the above scale spacing.

As a sheet processing machine, a printing machine is provided. This can also be configured as a varnishing, laminating or laminating machine, punching or embossing machine or a similar further processing or finishing device or additionally equipped with corresponding processing modules.

The sheet-processing machine includes a sheet feeding 5, at least one printing station 6 and a sheet delivery 7. By means of the sheet feeder 5, the sheets from the shingled stream S are fed individually in fitting allocation to the sheet-processing machine. The printing stations 6 consist of an upper printing unit O and a lower printing unit U. The printing units O, U can be configured as offset printing units and then have at least - not shown here - color and dampening units, a forme cylinder and a blanket cylinder. Depending on the configuration can be provided per printing unit U and / or O and a counter-pressure cylinder. The arrangement shown is designed so that two blanket cylinders are in contact with each other. Here, the sheet is carried out between the blanket cylinders and simultaneously printed on both sides. This results in monochrome printed products on both sides. Such products are versatile in use as simple supplements to packaging.

Furthermore, the printing station 6 of the sheet-processing machine can also be operated so that only the printing unit U or the printing unit O is used for printing. This is advantageous if in the cross cutter 3 an already printed with printing sujet printing substrate B is provided. The cross cutter 3 is then arranged so that the successive Drucksujets on the printing substrate B register can be separated from each other. For this purpose, a sensor device for detecting markings on the printing material web B be provided, wherein the markers are associated with the Drucksujets, so that the resulting sheet contain the Drucksujet always in the same position. Thus, the printed sheets can be further processed properly. It is thus possible, by means of the printing station specifically assigned to the existing Drucksujets make a respective impression. Such an impression can be made on the front and / or the back of each signature.

After passing through the printing stations 6, the sheets are combined in a sheet delivery 7 into stacks, bundles, giants or differently configured sheet collections.

The substrate roll to be processed can - as already indicated - be pretreated in other processing units. Here, not only conventional printing processes, but also coating methods such as priming or painting or the like come into question. A determined by a given configuration of processing units format the benefits on the substrate web B is to be processed easily in the cross cutter 3. The cross cutter 3 ensures that the individual sheets are separated in register with respect to the printed use and that the exiting sheets can be transferred in an orderly sequence to the downstream sheet processing machine.

The sheet feeder 5 may have a Saugbandstrecke, which transports the sheets in a fixed orientation, since the sheets must arrive in timed sequence with a defined distance in the sheet feeder 5 of the sheet processing machine. Usually, the supply is as unterschuppter sheet flow, but it is also possible sheet feed.

• Rollenträger (hier ein Rollenwechsler 1)
• Bahnführung (hier eine Bahnzuführung 2, als Speicheraggregat mit Bahnschleifen ausgeführt z.B. mit Bahnkantensteuerung)
• Querschneider (hier ein Querschneider 3, Schneidaggregat 9)
• Bogenschuppung (hier ein Schuppaggregat 8)
• Bogenzuführung (normalerweise in Bogerirotationsmaschinen integriert).

Preferably, a so-called roll-bow feeder is used for sheet feed for the sheet-processing machine. The roll-to-sheet feeder has hitherto been designed as a feed unit of unprinted substrate for sheet-fed rotary printing presses and has the following features

• Roller carrier (here a reel changer 1)
• Web guide (here a web feed 2, designed as storage unit with web loops eg with web edge control)
• Sheeter (here a sheeter 3, cutting unit 9)
• Bow shingling (here a shearing unit 8)
• Sheet feeder (usually integrated in Boger rotary machines).

If the roll-bow feeder is arranged on rails so that it is displaceable from the area of the sheet-processing machine, a conventional supply can be made via the sheet feeder by means of sheet stacks.

The function of the roll-bow feeder is also suitable for the processing of foils. It may be provided for this purpose with an antistatic system or corona devices for the pretreatment of the film surface.

For the processing of paper, the roll-bow feeder may also contain a rewet.

Sheeters 3 may be used in a so-called in-line arrangement, i.e. be assigned in an even assignment before the sheet feed the sheet-processing machine with respect to the conveying direction of the printing material. However, the cross cutter 3 can also be connected in a rectangular arrangement with the respective sheet processing machine, wherein the sheet feeder is then supplied via a so-called corner conveyor with the sheet generated by the cross cutter 3. Then, however, the cut sheet material has to be transported across its unwinding direction by the sheet processing machine.

1. a) Die Bogen verarbeitende Maschine kann mit standardmäßigen Bogenanlegern für die Verarbeitung von Bogenstapeln aus Papier, Karton, Kunststoff oder anderer Materialien genutzt werden.
2. b) Die Bogen verarbeitende Maschine kann mittels des Querschneiders 3 mit dem einfachen Schuppaggregat 8 oder dem zusätzlichen Schuppaggregat 20 für Verarbeitung von Rollenmaterial aus Papier, Karton, Kunststoff oder anderer Materialien genutzt werden.

This type of assignment of cross cutter 3 and sheet processing machine allows a dual use:

1. a) The sheet-fed machine can be used with standard sheet feeders for processing sheet stacks of paper, cardboard, plastic or other materials.
2. b) The sheet-processing machine can be used by means of the cross cutter 3 with the simple shingling unit 8 or the additional shingling unit 20 for processing of roll material made of paper, cardboard, plastic or other materials.

For the configuration variants according to the two aforementioned cases, the sheet-processing machine can always be additionally equipped with a sheet feeder, which, however, the system significantly more expensive. On the other hand results from the arrangement of the sheet feeder, a buffer function between the cross cutter 3 and the printing station 6, which is available for the production process and for the supply of printing material.

In addition, in the event that only web-shaped materials are to be processed, but also the following arrangement is conceivable: In-line arrangement of the cross cutter 3, i. in the running direction of the paper run, the sheeter with a shingling unit can promote the shingled sheet flow directly into the plant of the sheet-processing machine and the arrangement of a sheet feeder is eliminated.

1. a) Das Schuppaggregat 8 des Querschneiders 3 liefert die für die Bogenanlage in der Bogen verarbeitenden Maschine erforderliche Schuppenabstand (siehe Fig. 2).
2. b) Das Schuppaggregat 8 des Querschneiders 3 liefert einen beliebige Schuppenabstand, wobei aber eine zusätzliche Schuppstation 21 (vergleichbar dem Bogenanleger), z.B. mittels einer Walzengruppe mit Förderrollen, den für die Bogenanlage in der Bogen verarbeitenden Maschine erforderlichen Schuppenabstand erzeugt (siehe Fig. 3).

In this context, the following configurations of the assignment are possible:

1. a) The shingling unit 8 of the cross cutter 3 supplies the shed spacing required for the sheet processing in the sheet processing machine (see Fig. 2 ).
2. b) The shingling unit 8 of the cross cutter 3 provides any scale spacing, but with an additional shingling station 21 (comparable to the sheet feeder), for example by means of a roller group with conveyor rollers, the shed spacing required for the sheet processing machine in the sheet generated (see Fig. 3 ).

In Fig. 2 is the first of these variants shown. The sheeter 3 delivers the sheet flow S in the preset scale distance X on a conveyor table 10. From there, the shingled stream S is possibly supplied via a belt table 11 with the scale distance X of the sheet-processing machine.

In Fig. 3 is the second of these variants shown. The cross cutter 3 delivers the sheet flow S in its own scale distance X via a conveyor table 20 to a shingling station 21. There, the scale flow S is reconfigured to a scale distance Y. This can be, for example, a single sheet funding. From the shingling station 21, the shingled stream S is optionally supplied via a belt table 22 to the shingling distance Y of the sheet-processing machine.

In the embodiments according to FIGS. 2 and 3 No conventional sheet feeder is provided.

• Falz- / Heftmaschinen,
• Stanz- / Prägemaschinen,
• Kaschier- / Laminiermaschinen
• Sortieranlagen und/oder
• Anlagen zur Qualitätskontrolle.

Scroll-to-sheet cross cutters have hitherto been used mainly on sheet-fed rotary offset printing presses. The described arrangement also allows use on the sheet complementary processing machines, such as

• Folding / stapling machines,
• Punching / embossing machines,
• Laminating / laminating machines
• Sorting plants and / or
• Equipment for quality control.

• Inline-Anordnung
• rechtwinkelige Anordnung

A so-called register-cutting device for roll-to-sheet cross cutter is necessary to obtain exact sheet dimensions for further processing in the sheet processing machine. Again, there are two variants of the assignment of cross cutter and sheet feeder or sheet processing machine:

• Line arrangement
• rectangular arrangement

Further embodiments of the invention can be found in the application of individual drives for the cross cutter 3, the conveyor table 4 and / or 10 and / or 20, the shingles 8 and / or 21, the cutting unit 9, and the belt tables 11 and / or 22 Single drives is a very variable vote of the aggregates possible successive, especially with regard to the producible scale distance.

This results in a very variable and at the same time cost-effective production system for printed products, which is also optimized in terms of space requirements.

I.

Verwendung einer unbedruckten Bedruckstoffbahn B,
Schneiden im Querschneider 3,
Bilden eines passgenauen Schuppenstroms S
direktes Zuführen der Bedruckstoffbogen zur Druckstation 6
einseitiges, einfarbiges Bedrucken mittels eines Sujets auf der Vorder- oder Rückseite
Auslage oder Weiterverarbeitung

II.

Verwendung einer unbedruckten Bedruckstoffbahn B,
Schneiden im Querschneider 3,
Bilden eines passgenauen Schuppenstroms S
direktes Zuführen der Bedruckstoffbogen zur Druckstation 6 beidseitiges, einfarbiges Bedrucken mittels eines oder verschiedener Sujets auf der Vorder- und Rückseite
Auslage oder Weiterverarbeitung

III.

Verwendung einer bedruckten Bedruckstoffbahn B,
Schneiden im Registerschnitt mittels des Querschneiders 3,
Bilden eines passgenauen Schuppenstroms S
passgenaues Zuführen der Bedruckstoffbogen zur Druckstation 6 einseitiges, einfarbiges Bedrucken mittels eines ergänzenden Sujets auf der Vorder- oder Rückseite
Auslage oder Weiterverarbeitung

IV.

Verwendung einer bedruckten Bedruckstoffbahn B,
Schneiden im Registerschnitt mittels des Querschneiders 3,
Bilden eines passgenauen Schuppenstroms S
passgenaues Zuführen der Bedruckstoffbogen zur Druckstation 6 beidseitiges, einfarbiges Bedrucken mittels eines oder verschiedener ergänzender Sujets auf der Vorder- und Rückseite
Auslage oder Weiterverarbeitung

V.

Verwendung einer bedruckten Bedruckstoffbahn B,
Schneiden im Registerschnitt mittels des Querschneiders 3,
Bilden eines passgenauen Schuppenstroms S
passgenaues Zuführen der Bedruckstoffbogen zur Druckstation 6 einseitiges, einfarbiges Bedrucken mittels eines wechselnden ergänzenden Sujets auf der Vorder- oder Rückseite
Auslage oder Weiterverarbeitung

VI.

Verwendung einer bedruckten Bedruckstoffbahn B,
Schneiden im Registerschnitt mittels des Querschneiders 3,
Bilden eines passgenauen Schuppenstroms S
passgenaues Zuführen der Bedruckstoffbogen zur Druckstation 6 beidseitiges, einfarbiges Bedrucken mittels eines oder verschiedener wechselnder ergänzender Sujets auf der Vorder- und Rückseite
Auslage oder Weiterverarbeitung

VII.

Verwendung einer bedruckten oder einer unbedruckten Bedruckstoffbahn B,
Schneiden im Querschneider 3,
Bilden eines passgenauen Schuppenstroms S
Zuführen der Bedruckstoffbogen zur Druckstation 6
ein- oder beidseitiges Beschichten auf der Vorder- und/oder Rückseite
Auslage oder Weiterverarbeitung

VIII.

Verwendung einer bedruckten oder einer unbedruckten Bedruckstoffbahn B,
Schneiden im Querschneider 3,
Bilden eines passgenauen Schuppenstroms S
Zuführen der Bedruckstoffbogen zur Druckstation 6
verformende oder schneidende Bearbeitung der Druckbogen
Auslage oder Weiterverarbeitung

Thus, a wide variety of production methods of advertising, packaging or other printed products are possible. For the above-described facilities in the illustrated different combination options, the following production processes with the production steps mentioned in detail can be considered as examples:

I.

Use of an unprinted substrate web B,
Cutting in the cross cutter 3,
Forming a tailor-made scale flow S
Direct feeding of the printing material sheets to the printing station 6
one-sided, monochrome printing by means of a subject on the front or back
Display or further processing

II.

Use of an unprinted substrate web B,
Cutting in the cross cutter 3,
Forming a tailor-made scale flow S
Direct feeding of the printing material sheets to the printing station 6 double-sided, single-color printing with one or several subjects on the front and back
Display or further processing

III.

Use of a printed substrate web B,
Cutting in the register section by means of the cross cutter 3,
Forming a tailor-made scale flow S
Accurate feeding of the printing material to the printing station 6 one-sided, monochrome printing by means of a supplementary subject on the front or back
Display or further processing

IV.

Use of a printed substrate web B,
Cutting in the register section by means of the cross cutter 3,
Forming a tailor-made scale flow S
precise feeding of the printing material sheets to the printing station 6 double-sided, single-color printing by means of one or several supplementary subjects on the front and back
Display or further processing

V.

Use of a printed substrate web B,
Cutting in the register section by means of the cross cutter 3,
Forming a tailor-made scale flow S
Accurate feeding of the printing material to the printing station 6 one-sided, monochrome printing by means of a changing supplementary subject on the front or back
Display or further processing

VI.

Use of a printed substrate web B,
Cutting in the register section by means of the cross cutter 3,
Forming a tailor-made scale flow S
Accurate feeding of the printing material sheets to the printing station 6 double-sided, single-color printing by means of one or several alternating supplementary subjects on the front and back
Display or further processing

VII.

Use of a printed or an unprinted substrate web B,
Cutting in the cross cutter 3,
Forming a tailor-made scale flow S
Feed the substrate sheet to the printing station 6
one or two-sided coating on the front and / or back
Display or further processing

VIII.

Use of a printed or an unprinted substrate web B,
Cutting in the cross cutter 3,
Forming a tailor-made scale flow S
Feed the substrate sheet to the printing station 6
Deforming or cutting processing of the printed sheets
Display or further processing

The advantages of the proposed system and the means of their feasible production process consist primarily of the fact that a wide variety of substrates for simple products are inexpensive to process, the starting material is cheap to procure. This products of all kinds for the packaging and advertising industry can be produced. For example, in advertising or packaging material in a basic pattern differentiated for sales regions image, font or price content can be applied. The printed product is thus inexpensively pre-produced in a simple manner in a large quantity and can then be completed in a timely manner for the respective requirements in the fields of application. Furthermore, if necessary, transport and storage capacities are eliminated by the direct transition from the processing units to the sheet-fed rotary printing machine.

LIST OF REFERENCE NUMBERS

1

reelstands

2

web guide

3

Sheeter

4

conveyor table

5

sheet feeder

6

printing station

7

sheet delivery

8th

Schupp aggregate

9

cutting unit

10

conveyor table

11

belt table

12

form cylinder

13

Blanket cylinder

20

conveyor table

21

Schupp station

22

belt table

B

printing material

S

shingle stream

Claims (16)

1. A method for producing sheets printed on one or both sides by means of sheet processing machines,

   - wherein a substrate web (B) is provided in a reel stand or reel changer (1),

   - wherein the substrate sheets can be configured as sheet flow (S), and

   - wherein the sheet flow (S) of substrate sheets can be fed to a sheet processing machine,

   - wherein an unprinted substrate web (B) can be divided into unprinted substrate sheets by means of a transverse cutter (3), characterized

   - in that the substrate sheets by way of a conveying table (4) are conveyed into a substrate feeding device (5) of a printing station and

   - in that the substrate sheets by means of the substrate feeding device (5) can be guided to the printing station (6) for direct feeding with a unit configurated as double printing couple for direct feeding from an upper and a lower printing couple.
2. A method for producing sheets printed on one or both sides by means of sheet processing machines,

   - wherein a substrate web (B) is provided in a reel stand or reel changer (1),

   - wherein the substrate web (B) is divisible into substrate sheets by means of a cutting device,

   - wherein the substrate sheets can be configured as sheet flow (S), and

   - wherein the sheet flow (S) of substrate sheets can be fed to a sheet processing machine,

   - wherein a substrate web (B) printed on one or both sides can be divided register-accurately with respect to the printing image into substrate sheets printed on one or both sides by means of a transverse cutter (3),

   - wherein the substrate sheets are conveyed in a substrate feeding device (5) of a printing station (6), characterized

   - in that the substrate sheets by way of a conveying table (4) are conveyed into a substrate feeding device (5) of a printing station and

   - in that the substrate sheets by means of the substrate feeding device (5) can be guided to the printing station (6) for direct feeding with a unit configurated as double printing couple for direct feeding from an upper and a lower printing couple.
3. The method according to Claim 1 or 2, characterized in that the substrate sheets in the printing station (6) can be fed by means of a printing couple (O) for the top and/or a printing couple (U) for the bottom of the sheet to be printed, wherein the printing sheets on passing through the printing station (6) are simultaneously printed from the top and the bottom.
4. The method according to Claim 1 or 2, characterized in that the substrate sheets in the printing station (6) can be fed by means of a printing couple (O) for the top and/or of a printing couple (U) for the bottom of the sheets to be printed, wherein the printing sheets on passing through the printing station (6) are optionally printed from the top or the bottom.
5. The method according to Claim 3 or 4, characterized in that unprinted substrate sheets in the printing station (6) are provided with unicolour printing images on one or both sides.
6. The method according to Claim 3 or 4, characterized in that already printed substrate sheets in the printing station (6) are provided with changing impressions on one or both sides.
7. A device for feeding sheets to sheet processing machines, wherein the sheets immediately prior to the processing are produced from web material that is unprinted or printed on one or both sides, wherein a substrate web (B) is provided in a reel stand or reel changer (1), wherein the substrate web (B) is divisible into substrate sheets by means of a transverse cutter (3) and the substrate sheets can be configured as sheet flow (S), and wherein the sheet flow (S) of substrate sheets can be fed to a sheet processing machine, characterized in that the sheet processing machine comprises a printing station with a unit configured as double printing couple (2) from an upper printing couple (O) and a lower printing couple (U), wherein the printing couples (O, U) can be used for the simultaneous printing of both sides of the sheets or for the one-sided printing of the sheets and in that the device is arranged for the direct feeding of the substrate sheets to the sheet processing machine, wherein the sheets can be fed to the sheet processing machine by means of a conveying table (4) and a substrate feeding device (5).
8. The device according to Claim 7, characterized in that the printing station comprises at least one printing couple (0) for the top and at least one printing couple (U) for the bottom of the sheet to be printed, wherein the printing sheets on passing through the printing station are simultaneously printed from the top and the bottom.
9. The device according to Claim 7, characterized in that the printing station and/or the printing couples (O, U) are designed for transferring one or more printing colours.
10. The device according to Claim 7 to 9, characterized in that the substrate web (B) can be fed to the transverse cutter (3), which comprises a cutting unit (9) that serves for generating sheets of adjustable length, and which furthermore comprises a shingling unit (8) arranged downstream of the cutting unit (9), which serves for generating a sheet flow (S) of shingled or individually lying sheets.
11. The device according to Claim 10, characterized in that by means of the shingling unit (8) an adjustable shingle spacing of the front edges of the sheets lying in a shingled manner can be generated relative to one another.
12. The device according to Claim 10 or 11, characterized in that the substrate web (B) can be fed to the transverse cutter (3) and the shingle flow (S) generated by the latter can be fed to a shingling station (21) and in that in the shingling station (21) the shingle spacing of the shingle flow (S) that was generated in the transverse cutter (3) can be adjustably modified, wherein from the shingling station (21) a sheet flow (S) lying in a shingled manner or individual sheets can be conveyed.
13. The device according to Claim 10 to 12, characterized in that the transverse cutter (3) and/or the shingling station (21) are directly arranged upstream of a conveyor table (11, 22), wherein the conveyor table (11, 22) serves for the direct feeding of the sheet flow (S) to the sheet processing machine.
14. The device according to Claim 7 to 13, characterized in that one or all units are provided with an independent drive that is controllable individually and in conjunction with the overall plant.
15. The device according to Claim 7 to 14, characterized in that the sheet processing machine contains processing stations or processing units in form of stamping systems, punching systems, units for applying silicone or printing couples according to the method of the screen print.
16. The device according to Claim 7 to 14, characterized in that the sheet processing machine contains processing units in the form of folders, sorting units, collecting and stitching units or units for the quality control.

Images