DE102021113959A1 - Machine arrangement for the sequential processing of sheet-shaped substrates - Google Patents

Abstract

The invention relates to a machine arrangement for the sequential processing of sheet-shaped substrates, with a plurality of different processing stations which are arranged one after the other in a transport direction for inline processing of the substrates, one of the processing stations having a non-impact printing device printing the substrates in each case and a printing cylinder guiding the substrate, a processing station with a dryer for drying the substrates printed with the non-impact printing device is arranged in the transport direction after the processing station having the non-impact printing device, and at least one further processing station is arranged in the transport direction after the processing station with the dryer for drying the substrates which is designed for printing or painting the substrates, the processing station with the dryer comprising a chain conveyor for conveying the printed substrates during drying.

Description

The invention relates to a machine arrangement for the sequential processing of sheet-shaped substrates according to the preamble of claim 1.

through the WO 2004/013704 A1 discloses a digital printing machine for direct contactless sheet-fed printing with a digital printing unit that is format-free in the circumferential direction, with a transport device downstream of the digital printing unit, the transport device having grippers holding sheets on its circumference, the transport device preferably having a plurality of transport cylinders and/or transport belts and/or impression cylinders .

through the EP 2 540 513 A1 a machine arrangement for the sequential processing of a plurality of sheet-shaped substrates, each having a front side and a back side, is known, having a first printing cylinder and a second printing cylinder, with at least one first non-impact printing device printing the front side of the substrate in question on the circumference of the first printing cylinder and in Direction of rotation of the first printing cylinder after the first non-impact printing device, a dryer that dries the front side of the substrate in question printed by the first non-impact printing device is arranged, with at least one second non-printing cylinder on the circumference of the second printing cylinder Impact printing device and in the direction of rotation of the second pressure cylinder after the second non-impact printing device a printed by the second non-impact printing device back of the substrate in question drying dryer are arranged where in which the first printing cylinder transfers the relevant front-side printed and dried substrate directly to the second printing cylinder.

through the EP 1 440 351 B1 is a digital printing machine for direct, contactless sheet printing, known, with an elastically related transport device on which a printing material is transported, the transport device having at least one gripper for holding the sheet on the circumference of the transport device and/or with a stop for positioning the front edge of the sheet, and with a format-variable digital printing unit in the circumferential direction of the transport device, with the distance between the highest point of the gripper and/or stop and the surface of the printing material to be printed being smaller during the printing process than the distance between the surface of the printing material to be printed and the digital print unit, with the highest point of the gripper and/or stop protruding beyond the surface of the unrelated transport device.

through the DE 10 2015 211 637 A1 a device for transporting sheets through a printing unit with an inkjet printing cylinder and at least one transfer drum is known, with each sheet being held on an inkjet printing cylinder and being transferred by leading edge transfer from an upstream transfer drum, with a tensioning roller for the crease-free position of the sheet the inkjet printing cylinder is provided.

through the DE 103 12 870 A1 a digital printing press for sheetfed printing is known, with a digital printing unit that is format-free in the circumferential direction, an intermediate cylinder downstream of the digital printing unit, which is at least partially covered with an elastic material, and an impression cylinder downstream of the intermediate cylinder, the impression cylinder having sheet-holding grippers and the intermediate cylinder at its Scope has the gripper-receiving recesses.

through the DE 10 2014 010 904 B3 a device for printing sheet-like printing materials on both sides is known, with the printing material being guided through more than 360° on an impression cylinder, the printing material with the reverse side again entering the effective area of an ink application unit, from which the printing material on an upstream impression cylinder is already on the Straight printing side was printed, the inking unit between two downstream impression cylinders can preferably be pivoted, wherein the pivotable inking unit z. B. is an inkjet printhead.

through the DE 10 2009 000 518 A1 a sheet-fed printing machine is known, with a feeder for feeding printed sheets to be printed into the sheet-fed printing machine, with at least one printing unit and/or coating unit for printing the printed sheets with a static print image that is identical for all printed sheets, with a delivery for ejecting printed printed sheets from the sheet-fed printing machine, and with at least one printing formeless printing device integrated into the sheetfed printing press for printing the printed sheets with a particularly dynamic, variable print image, with the or each printing formeless printing device in the sheetfed printing press being controllably integrated as a function of process parameters or operating parameters or job parameters or quality parameters.

through the DE 10 2009 002 580 A1 is a printing machine, in particular sheet-fed offset printing machine machine is known, with a sheet delivery basic module being arranged downstream of several basic modules arranged in a row, each designed as a printing or coating unit, with the sheet delivery basic module having a printing cylinder that guides the sheet material, with an inkjet device on the circumference of the printing cylinder of the sheet delivery basic module for Marking of the printing material is arranged.

the DE 200 06 513 U1 relates to a sheet-fed rotary printing machine with a sheet feeder, a sheet feeder and a plurality of basic modules arranged between the sheet feeder and the sheet feeder, which are identical in their basic structure and have a sheet guiding cylinder and a sheet conveying device and which can be equipped with a printing unit, a coating unit or a drying unit are, wherein a multifunction module with a sheet conveyor device and a sheet guiding cylinder is arranged between the last base module in the sheet conveying direction and the sheet delivery, wherein the multifunctional module is prepared for the attachment of several different additional devices, wherein the multifunctional module z. B. is equipped for the cultivation of an inkjet marking.

through the DE 10 2016 207 398 B3 , the US 2009/0284561 A1 , the U.S. 2009/0244237 A1 and the U.S. 2011/0205321 A1 a machine arrangement for the sequential processing of sheet-shaped substrates is known in each case, with the respective machine arrangement having a plurality of different processing stations in each case, with at least one of the processing stations having a non-impact printing device that prints the substrates in each case, the processing station in question having the non-impact printing device has a printing cylinder, the respective non-impact printing device being arranged in each case on the circumference of the printing cylinder.

through the U.S. 7,909,454 B2 discloses a printing press for sequential printing of sheet-shaped substrates, with an inkjet printing device being arranged on the circumference of a printing cylinder, with a feed cylinder being arranged directly in front of the printing cylinder, with both the printing cylinder and the feed cylinder each having grippers for holding substrates to be printed.

through the EP 2 610 064 A1 there is known an ink jet recording apparatus comprising a) a conveying device having a moving suction surface for conveying a cut paper medium by sucking the medium to the suction surface, and suction holes uniformly arranged in the regions of the suction surface; and b) a recording head that forms an image by ejecting ink by an ink jet method onto a surface of the medium conveyed by the conveying device.

The invention is based on the object of creating a machine arrangement for the sequential processing of a plurality of sheet-like substrates, which has a large installation space for the arrangement of dryers.

The object is achieved according to the invention by the features of claim 1.

The respective dependent claims show advantageous refinements and/or developments of the solution found.

The advantages that can be achieved with the invention are evident from the following explanations.

Moreover, the solution described can be used in a hybrid machine arrangement that processes sheet-shaped substrates, preferably in a hybrid printing machine, which has the high productivity of a conventional, e.g. B. in an offset printing process or in a flexographic printing process or in a screen printing process printing device or a coating device, in particular a coating unit variably in combination with at least one flexibly printing variable print images, z. B. as an inkjet printer designed non-impact printing device uses, both the conventional printing device or the coating device and the non-impact printing device in a running production line are each used with the optimal working speed for them. Such a hybrid machine arrangement is particularly suitable for the production of packaging materials, e.g. B. sheets for the production of folding boxes very advantageous because each of the strengths of each of the printing devices are used, which leads to a flexible and economical production of the packaging. A transport of sheet-shaped substrates by means of rotary bodies, in particular cylinders and gripper bars or gripper carriages, each with a transfer of the sheet-shaped substrates in each case in the gripper closure to a subsequent processing station, as is known from sheet-fed offset printing machines, ensures the highest possible register accuracy.

Exemplary embodiments of the invention are shown in the drawings and are described in more detail below.

• 1 ein Blockschaltbild zur Darstellung von verschiedenen Produktionslinien;
• 2 eine Maschinenanordnung mit mehreren verschiedenen Bearbeitungsstationen;
• 3 Details einer Ausführung zur Maschinenanordnung gemäß 2;
• 4 Details einer weiteren Ausführung zur Maschinenanordnung gemäß 2.

Show it:

• 1 a block diagram showing different production lines;
• 2 a machine arrangement with several different processing stations;
• 3 Details of an embodiment of the machine arrangement according to 2 ;
• 4 Details of a further embodiment of the machine arrangement according to 2 .

1 illustrates in a block diagram different production lines, each with a machine arrangement with several, in particular different, processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 are implemented or at least can be implemented for processing at least one sheet-shaped substrate, in particular a printing material, preferably a particularly rectangular printing sheet, in short a sheet, with this at least one substrate being designed to be rigid or limp depending on the material, material thickness and/or grammage. As a rule, several sheets, i.e. a sequence of sheets, are successively processed in a production line during a specific production using the same processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 edited. Each of these processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 each as a z. B. independently functional module is formed, whereby a module is to be understood as a machine unit or functional assembly that is generally manufactured independently or at least one that is mounted on its own in its own frame. The modules lined up in a row in the machine arrangement divide this machine arrangement into individual units, with adjacent modules essentially having a vertical joint surface at their joint. Each of the processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 is therefore preferably manufactured independently and is in a preferred embodiment z. B. individually testable in its respective function. The machine arrangement in question, which, depending on a specific production, is made up of a selection and combination of at least three different processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 is formed, each embodies a specific production line. Each of the production lines shown, each of which has a specific machine arrangement with a plurality of processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 is embodied in each case in particular for the production of a packaging material formed from the printing material, preferably from the printed sheet. The packaging to be produced are z. B. each a folding box, which are each made of printed sheets. The various production lines are therefore designed in particular for the production of different packaging materials. The processing of the printing material required during a specific production takes place inline, ie the processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12, as the printing material passes through the processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 having machine arrangement in an ordered sequence one after the other and coordinated with each other, without intermediate storage for the printing material, ie the processed sheets, being provided during the production carried out with the respective machine arrangement.

All in the 1 The production lines illustrated have in common that they each work together with a processing station 06, which has at least one non-impact printing device 06, preferably several, e.g. g. four, five, six, seven or more, in particular individually controlled, non-impact printing units 06, with these non-impact printing units 06 preferably being arranged one behind the other in transport direction T of the printing material and being designed in such a way that they press the printing material in each case print or at least be able to print at least almost in its entire width directed transversely to the transport direction T. A non-impact printing device 06 uses a printing process without a fixed printing forme and can in principle change the printing material, e.g. B. print the sheet currently being fed to this non-impact printing unit 06 with a print image that differs from the previous print image. The respective non-impact printing device 06 is implemented in particular by at least one inkjet printer, also referred to as inkjet printing devices, or by at least one laser printer. Inkjet printers are dot matrix printers in which a print image is created by the targeted firing or deflection of small ink droplets, with the inkjet printer being available either as a device with a continuous ink jet (Continuous Ink Jet = CIJ) or as a device that shoots a single drop of ink (Drop On Demand = DOD) is trained. Laser printers generate the respective print image using an electrophotographic process. A machine arrangement that processes a printing material and has at least one non-impact printing unit 06 is used, e.g. B. also referred to as a digital printing machine.

Inkjet printing devices each have at least one nozzle bar. At least one nozzle bar preferably extends orthogonally the planned transport path of the printing material or substrate over a working width of the printing press. The at least one nozzle bar preferably has at least one row of nozzles. The at least one row of nozzles has nozzle openings, ie ink outlet openings, for example at regular intervals, viewed in a transverse direction, preferably over the entire working width of the printing press of the at least one first central cylinder, ie printing cylinder 22 . The nozzles are preferably distributed over several print heads. A surface of the respective print head surrounding the nozzle openings is preferably called the nozzle surface.

In the following, it is assumed by way of example that in the respective machine arrangement with a plurality of processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 as a substrate, in each case a sequence of, in particular, rigid sheets, e.g. B. from a paper, from a single-layer or multi-layer cardboard or cardboard is processed in particular to a packaging material. The substrates paper, cardboard and cardboard differ in their respective grammage, ie the weight in grams for one square meter of this substrate. In general, the above-mentioned printing material with a basis weight of between 7 g/m ² and 150 g/m ² is considered paper, between 150 g/m ² and 600 g/m ² as cardboard and with more than 600 g/m ² as cardboard. Cardboard or paperboard, in particular, is used to produce folding boxes, each of which has good printability and is suitable for subsequent finishing or processing such as B. are suitable for painting and punching. These cartons or cardboard are z. B. wood-free, slightly woody, woody or waste paper. In their structure, multi-layer cardboard or paperboard, z. B. corrugated cardboard, each with a top layer, an insert and a backing on a pad. From their surface texture, cartons or cardboard z. B. uncoated, pigmented, coated or cast coated. A format of the sheet is z. B. in the range between 340 mm x 480 mm and 740 mm x 1,060 mm, with the format information usually the first number indicates a length in the transport direction T of the sheet and the second number indicates a width of the sheet orthogonal to the transport direction T.

In the block diagram of 1 each runs with several of the processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 production line with reference to the transport direction T of the printing material essentially from right to left, with each of the two processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 connecting directional arrows each indicate a transport path to be traversed by the printing material and the associated transport direction T in order to move from a processing station 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 to the next processing station 01 selected in the machine arrangement intended for the respective production; 02; 03; 04; 06; 07; 08; 09; 11; 12 to arrive. Each production starts with sheets provided in the processing station 01, the processing station 01 acting as a feeder 01, e.g. B. as a sheet feeder 01 or as a magazine feeder 01. A sheet feeder 01 usually takes a z. e.g. stacks of sheets stacked on a pallet, whereas a magazine feeder 01 has a plurality of compartments into which sheets, in particular stacks of e.g. B. various sheets or sheets of different formats are inserted or at least can be inserted. The investor 01 isolated z. B. by means of a suction head, the stacked sheets and guides them in a sequence of sheets separated from one another or in an imbricated stream to the next processing station 02 in the specific production run; 03; 04; 06 to. The next processing station 02; 03; 04 is e.g. g. as a primer application unit 02 or as a cold foil application unit 03 or as an offset printing unit 04 or as a flexo printing unit 04. The next processing station 06 can also directly z. B. the processing station 06 having at least one non-impact printing unit 06. The offset printing unit 04 provides the sheets with at least one static print image, i.e. one that cannot be changed during the printing process due to the fact that it is tied to the printing form used, whereas the non-impact printing unit 06 provides the sheets with at least one print image that changes in content or is at least modifiable.

If the processing station 03 closest to the feeder 01 is a cold foil application unit 03, the sheet is then i. i.e. R. transported to the processing station 04 embodied as an offset printing device 04. In the cold foil application device 03, a metallized coating layer that has been detached from a carrier foil is transferred to the printing material. By overprinting this layer of paint z. A wide variety of metal effects can be achieved, e.g. with an offset printing unit 04. The cold foil application device 03 is advantageously z. B. integrated in the offset printing unit 04.

a z. B. particularly absorbent and / or to be prepared for printing with a non-impact printing unit 06 printing material, the feeder 01 a z. g. as a primer application device 02, to the next processing station 02, in order to prepare at least one surface of this printing substrate before it is printed or coated with a paint, e.g. B. to coat water-based primer ten, in particular to seal. Priming represents a primer or initial coating of the printing material, in particular in order to improve adhesion of a printing color or ink to be applied to the printing material or to enable it in the first place. For this z. B. applied a white paint to the substrate. The primer application device 02 has e.g. B. a printing unit cylinder 82 that interacts with an impression cylinder 60 and has an applicator roller 83 that is or at least can be positioned on this printing unit cylinder 82, preferably in the form of an anilox roller 83, and at least one doctor blade 84, in particular a chamber doctor blade system 84, that extends in the axial direction of the applicator roller 83. The primer is by means of primer application unit 02 either over the entire surface or only at certain, ie previously defined, points, ie partially applied to the printing substrate. The substrate processed in primer application device 02, e.g. B. sheet is the next processing station z. B. an offset printing unit 04 and / or z. B. fed to a non-impact printing device 06.

The one z. Flexographic printing carried out, e.g. as a flexographic printing unit 04, is a direct letterpress process in which the raised areas of the printing form bear the image . B. PE, PET, PVC, PS, PP, PC is used. Flexographic printing uses low-viscosity inks and flexible printing plates made of photopolymer or rubber. In general, a flexographic printing unit 04 includes a) an anilox roller, which is used to ink the printing forme, b) an impression cylinder, also known as a forme cylinder, to which the printing forme is attached, and c) an impression cylinder that guides the printing material.

Processing station 04, which is embodied as a flexographic printing unit 04 or as an offset printing unit 04 and prints at least one static print image on each of the sheets, preferably has a plurality of, e.g. B. at least four printing units, with each printing unit preferably printing a different printing color, so that the printing material is multicolored, e.g. B. is printed in a four-color printing. The color shades yellow, magenta, cyan and black in particular are used as printing inks. In an alternative embodiment of the printing unit 04 to the flexographic or offset printing method, the processing station 04 that prints at least one static print image on each sheet is embodied as a printing unit 04 that prints using a screen printing method.

After the printing material has been processed in the at least one non-impact printing unit 06, this printing material is fed to a processing station 09 having a dryer 09, in particular a dryer 09 comprising a chain conveyor. g. by means of hot air and/or by irradiation with infrared or ultraviolet radiation, with a dryer 09 drying by means of ultraviolet radiation, e.g. B. is designed as an LED dryer, the type of radiation is dependent in particular on whether the printing ink or ink applied to the substrate is water-based or UV-curing.

After drying or intermediate drying through the processing stations 09; 07, the substrate is e.g. B. fed to a processing station 08 having a painting unit 08. Coating unit 08 preferably carries a z. B. transparent or white or colored dispersion paint, with dispersion paints consist essentially of water and binders (resins), with surfactants stabilizing these dispersions. A coating unit 08 that applies a dispersion coating to the printing material consists either of an anilox roller, a chamber doctor blade and an application roller (comparable to a flexographic printing unit) or of a pan and application roller. By means of a printing form, preferably based on photopolymerization, z. B. flat and / or partial coatings applied. Special paint plates made of rubber can also be used for full-surface paintwork. Downstream of the coating unit 08, e.g. B. a trained as a delivery 12 processing station 12 is arranged, which can include delivery dryer, wherein a delivery dryer is designed to dry the printing material in question by hot air and/or by irradiation with infrared or ultraviolet radiation, wherein a delivery dryer drying by ultraviolet radiation z. B. is designed as an LED dryer.

If the dryer 09 is supplied with a printing material that dries by ultraviolet radiation, ie a printing material on which a printing ink or ink that hardens with UV radiation or a varnish that hardens with UV radiation, e.g. B. a gloss paint is applied, this dryer 09 is equipped with a radiation source that generates ultraviolet radiation. With dispersion varnishes, more intense gloss and matt effects can be achieved compared to classic oil-based varnish. Special optical effects can be created with Effektpig ment can be achieved in the paint. The primer application device 02, the cold foil application device 03 and the painting device 08 can be summarized under the term coating device.

After the last drying along its transport path, the printing material is z. B. a processing station 11, which carries out mechanical processing on the printing material, e.g. B. by punching, grooving and / or separating parts, in particular breaking out benefits from their respective composite in the preferably printed sheet. Each of the aforementioned further processing is carried out in or by a processing plant. The mechanical further processing is preferably carried out in cooperation with a cylinder transporting the respective sheet. After that or directly from the last dryer 09 in the transport path of the printing material, the printing material reaches a delivery 12, which is in each of the in the 1 illustrated, each by a specific arrangement of processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 embodied production lines each form the last processing station 12. In the display 12, the previously processed sheets z. B. preferably stacked on a pallet.

As in the 1 shown is the previously mentioned order of the processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 is only an example and can be modified depending on the printed product to be produced.

1. 1. Bogenanleger 01; Primerauftrageinrichtung 02; Non-Impact-Druckeinrichtung 06; Zwischentrockner 07 z. B. mit IR-Strahlungsquelle für Dispersionslack oder Trockner 09 mit Heißluft und/oder IR-Strahlungsquelle oder UV-Strahlungsquelle; Lackiereinrichtung 08; Trockner 09 mit UV- bzw. IR-Strahlungsquelle und/oder Heißluft; Auslage 12
2. 2. Bogenanleger 01; Primerauftrageinrichtung 02; Non-Impact-Druckeinrichtung 06; Trockner 09 mit IR-Strahlungsquelle und/oder Heißluft; Auslage 12
3. 3. Bogenanleger 01; Primerauftrageinrichtung 02; Zwischentrockner 07 mit IR-Strahlungsquelle; Non-Impact-Druckeinrichtung 06; Trockner 09 mit Heißluft und/oder IR-Strahlungsquelle oder UV-Strahlungsquelle; Lackiereinrichtung 08 für Dispersionslack und UV-härtendem Lack; Auslage 12
4. 4. Bogenanleger 01; Primerauftrageinrichtung 02; Non-Impact-Druckeinrichtung 06; Zwischentrockner 07 mit IR-Strahlungsquelle oder Trockner 09 mit Heißluft und/oder IR-Strahlungsquelle oder UV-Strahlungsquelle; Lackiereinrichtung 08 für Dispersionslack und UV-härtendem Lack; Trockner 09 mit Heißluft und/oder IR-Strahlungsquelle oder UV-Strahlungsquelle; Auslage 12
5. 5. Bogenanleger 01; Kaltfolienauftrageinrichtung 03; Offset-Druckeinrichtung 04; Non-Impact-Druckeinrichtung 06; Trockner 09 mit IR-Strahlungsquelle und/oder Heißluft; Auslage 12
6. 6. Bogenanleger 01; Primerauftrageinrichtung 02; Non-Impact-Druckeinrichtung 06; Zwischentrockner 07 mit IR-Strahlungsquelle für Dispersionslack oder Trockner 09 mit Heißluft und/oder IR-Strahlungsquelle oder UV-Strahlungsquelle; Lackiereinrichtung 08; Trockner 09 mit Heißluft und/oder IR-Strahlungsquelle; mechanische Weiterverarbeitungseinrichtung 11; Auslage 12
7. 7. Bogenanleger 01; Offset-Druckeinrichtung 04; Non-Impact-Druckeinrichtung 06; Zwischentrockner 07 mit IR-Strahlungsquelle oder Trockner 09 mit Heißluft und/oder IR-Strahlungsquelle oder UV-Strahlungsquelle; mechanische Weiterverarbeitungseinrichtung 11; Auslage 12
8. 8. Bogenanleger 01; Non-Impact-Druckeinrichtung 06; Trockner 09 mit Heißluft und/oder IR-Strahlungsquelle; Auslage 12
9. 9. Bogenanleger 01; Non-Impact-Druckeinrichtung 06; Zwischentrockner 07 mit UV-Strahlungsquelle; Trockner 09 mit UV-Strahlungsquelle; Auslage 12
10. 10. Bogenanleger 01; Non-Impact-Druckeinrichtung 06; Zwischentrockner 07 mit UV-Strahlungsquelle; Trockner 09 mit UV-Strahlungsquelle; mechanische Weiterverarbeitungseinrichtung 11; Auslage 12
11. 11. Bogenanleger 01; Non-Impact-Druckeinrichtung 06; Zwischentrockner 07 mit IR-Strahlungsquelle; Offset-Druckeinrichtung 04; Lackiereinrichtung 08; Trockner 09 mit Heißluft und/oder IR-Strahlungsquelle; Auslage 12
12. 12. Magazinanleger 01; Primerauftrageinrichtung 02; Non-Impact-Druckeinrichtung 06; Zwischentrockner 07 mit IR-Strahlungsquelle; Lackiereinrichtung 08; Trockner 09 mit Heißluft und/oder IR-Strahlungsquelle; Auslage 12
13. 13. Magazinanleger 01; Primerauftrageinrichtung 02; Non-Impact-Druckeinrichtung 06; Zwischentrockner 07 mit IR-Strahlungsquelle; Trockner 09 mit Heißluft und/oder IR-Strahlungsquelle; mechanische Weiterverarbeitungseinrichtung 11; Auslage 12
14. 14. Magazinanleger 01; Non-Impact-Druckeinrichtung 06; Zwischentrockner 07 mit UV-Strahlungsquelle; Lackiereinrichtung 08; Trockner 09 mit UV-Strahlungsquelle; Auslage 12

In the 1 Production lines shown as examples and used in particular for the production of packaging materials each have a machine arrangement with a selection from the set of the aforementioned processing stations 01; 02; 03; 04; 06; 07; 08; 09; 11; 12 on. For example, the following production lines have been formed or can at least be formed:

1. 1. sheet feeder 01; primer application device 02; non-impact printing device 06; Intermediate dryer 07 e.g. B. with IR radiation source for dispersion paint or dryer 09 with hot air and/or IR radiation source or UV radiation source; painting device 08; dryer 09 with UV or IR radiation source and/or hot air; display 12
2. 2nd sheet feeder 01; primer application device 02; non-impact printing device 06; dryer 09 with IR radiation source and/or hot air; display 12
3. 3. sheet feeder 01; primer application device 02; Intermediate dryer 07 with IR radiation source; non-impact printing device 06; dryer 09 with hot air and/or IR radiation source or UV radiation source; Painting device 08 for dispersion paint and UV-curing paint; display 12
4. 4. sheet feeder 01; primer application device 02; non-impact printing device 06; Intermediate dryer 07 with IR radiation source or dryer 09 with hot air and/or IR radiation source or UV radiation source; Painting device 08 for dispersion paint and UV-curing paint; dryer 09 with hot air and/or IR radiation source or UV radiation source; display 12
5. 5. sheet feeder 01; cold foil application device 03; offset printing device 04; non-impact printing device 06; dryer 09 with IR radiation source and/or hot air; display 12
6. 6. sheet feeder 01; primer application device 02; non-impact printing device 06; Intermediate dryer 07 with IR radiation source for dispersion paint or dryer 09 with hot air and/or IR radiation source or UV radiation source; painting device 08; dryer 09 with hot air and/or IR radiation source; mechanical further processing device 11; display 12
7. 7. sheet feeder 01; offset printing device 04; non-impact printing device 06; Intermediate dryer 07 with IR radiation source or dryer 09 with hot air and/or IR radiation source or UV radiation source; mechanical further processing device 11; display 12
8. 8. sheet feeder 01; non-impact printing device 06; dryer 09 with hot air and/or IR radiation source; display 12
9. 9. sheet feeder 01; non-impact printing device 06; Intermediate dryer 07 with UV radiation source; dryer 09 with UV radiation source; display 12
10. 10. sheet feeder 01; non-impact printing device 06; Intermediate dryer 07 with UV radiation source; dryer 09 with UV radiation source; mechanical further processing device 11; display 12
11. 11. sheet feeder 01; non-impact printing device 06; Intermediate dryer 07 with IR radiation source; offset printing device 04; painting device 08; dryer 09 with hot air and/or IR radiation source; display 12
12. 12. Magazine feeder 01; primer application device 02; non-impact printing device 06; Intermediate dryer 07 with IR radiation source; painting device 08; dryer 09 with hot air and/or IR radiation source; display 12
13. 13. Magazine feeder 01; primer application device 02; non-impact printing device 06; Intermediate dryer 07 with IR radiation source; dryer 09 with hot air and/or IR radiation source; mechanical further processing device 11; display 12
14. 14. Magazine feeder 01; non-impact printing device 06; Intermediate dryer 07 with UV radiation source; painting device 08; dryer 09 with UV radiation source; display 12

At least one of the processing stations 01; 02; 03; 04; 07; 08; 09; 11; 12 for participating in the processing of the sheets is selected depending on whether the printing ink to be applied to the sheet in question, in particular with the non-impact printing unit 06, is a water-based printing ink or ink or a printing ink or ink that is cured by ultraviolet radiation is. The respective machine arrangement is thus designed to print the sheets with a water-based printing ink or with a printing ink that cures by ultraviolet radiation.

2 shows an example of a machine arrangement with a plurality of processing stations 01; 02; 07; 06; 09; 08; 12 according to the production line no. 3 mentioned above.

Sheets are fed into a sheet feeder 01, e.g. B. picked up individually from a stack with a suction head and successively at a rate of z. B. 10,000 pieces per hour z. g. to a processing station 02, which is embodied as a primer application device 02 that primes each sheet.

The primer application device 02 accepts the sheets fed to it by the sheet feeder 01, e.g. g. with an oscillating gripper 13. The primer application device 02 can have a single-sized transfer drum 14 arranged downstream of the oscillating gripper 13, a double-sized impression cylinder 60 arranged downstream of the transfer drum 14, a printing couple cylinder 82 that interacts with the impression cylinder 60, and also an applicator roller 83 and a chamber doctor blade system 84.

After passing through the processing station 02 that has the primer application device 02, the primed sheet in question is transferred to the transfer drum and then to the sheet-guiding cylinder of a processing station 07 that has an intermediate dryer 07, and intermediately dried in the processing station 07. After the intermediate dryer 07 in the transport direction T, there is preferably a further processing station 07, which also has an intermediate dryer 07 and in which the primed sheet is further dried.

The processing station 07 is followed in the transport direction T by a transport cylinder arrangement, and the transport cylinder arrangement is followed by a processing station 06, which has a non-impact printing device 06 that prints on the substrates. The non-impact printing device 06 preferably has several, e.g. B. five linearly arranged in a row, each individually controlled inkjet printer, the z. B. in the inks cyan, magenta, yellow and / or black and preferably additionally at least one customer-specific ink such. B. Print orange and/or green and/or violet.

The processing station 06 with the non-impact printing device 06 is followed in the transport direction T by a processing station 09 with a dryer 09 for drying the sheet in question, which includes a chain conveyor for conveying the printed sheet in question during drying.

The chain conveyor preferably has rear and front chain wheels 15 arranged in pairs and two chains 16 running over a front and a rear chain wheel 15, the chains 16 carrying gripper bridges 17.

In particular, in addition to the chains 16 carrying gripper bridges 17, the chain conveyor can also have an alignment means 18, the alignment means 18 aligning the gripper bridges 17 of the chain conveyor in the transport direction T independently of the chains 16.

The alignment means 18 included by the chain conveyor can be designed as a catch fork 18 and can be assigned to rotate with a sprocket shaft 19 included by the chain conveyor and carrying sprockets 15 .

Alignment means 18 preferably comprises a catch fork 18 and a fixing element 20 that is mounted so that it can move relative to catch fork 18, fixing element 20 between a position in which it fixes a respective gripper bridge 17 on catch fork 18 and a position in which it fixes a respective gripper bridge 17 releases, is designed to be displaceable.

In particular, the aligning means 18 is designed to rotate about a fixed axis, with the aligning means 18 comprising a positioning element which is designed to be complementary to further positioning elements which are attached to the chain conveyor-enclosed gripper bridges 17 are formed.

The alignment means 18 can also include a plurality of catch forks 18 .

The one or more catching forks 18 are preferably assigned to the sprocket shaft 19 and/or designed to rotate about a fixed axis in such a way that at least one catching fork 18 engages with a positioning element on a respective gripper bridge 17 when a respective gripper bridge 17 at its circumferential Movement along their trajectory from a straight line area of the trajectory running into a curved area of the trajectory.

In processing station 09 with dryer 09, the sheets provided with at least one changing or at least changeable print image in non-impact printing unit 06 are dried.

Downstream of the dryer 09 in the direction of transport T is at least one further processing station 04; 06; 08 arranged, which is designed for printing or varnishing the sheet-like substrates, in particular printing materials. The at least one additional processing station 04; 06; 08 is a processing station 08 with a coating unit 08 and/or a processing station 04 with an offset printing unit 04 and/or a processing station 04 with a flexographic printing unit 04 and/or a processing station 06 with a non-impact printing unit 06.

After the at least one further processing station 04; 06; 08, the sheets and/or copies detached from the sheets are collected, in particular stacked, in a processing station 12 designed as a delivery 12.

Between the at least one further processing station 04; 06; 08 and the delivery 12, a mechanical further processing device 11 for punching and/or creasing and/or breaking out copies from the respective sheet can be arranged.

The display 12 preferably includes a chain conveyor.

The delivery 12 can in particular be designed as a multi-stack delivery.

Preferably, the or all of the processing stations 02; 03; 04; 06; 07; 08; 11; 12, which are arranged in the transport direction T after the processing station 09 with the dryer 09 comprising a chain conveyor, are driven by chains 16 and sprockets 15 of the chain conveyor. In this case, the chains 16 form the only drive connection between a central drive, which is arranged in the transport direction T in front of the dryer 09, which includes the chain conveyor, and the processing stations 02; 03; 04; 06; 07; 08; 11; 12, which are arranged in the transport direction T after the processing station 09 with the dryer 09 comprising the chain conveyor.

According to a further preferred drive concept, a first and a second controllable drive are configured, the first drive covering the processing station 09 with the dryer 09 comprising the chain conveyor and all processing stations 01; 02; 03; 04; 06; 07; 08; 11, which are arranged in the transport direction T in front of the processing station 09 with the dryer 09 comprising a chain conveyor, drives and the second drive drives the processing stations 02; 03; 04; 06; 08; 11; 12, which are arranged in the transport direction T after the processing station 09 with the dryer 09 comprising the chain conveyor. The first and the second drive can be synchronized with one another via an electronic master axis.

Preferably, each of the processing stations 02; 03; 04; 06; 07; 08; 11, with the exception of the processing station 09 with the dryer 09 and the chain conveyor and the delivery 12, each have at least one transport cylinder or other sheet-guiding cylinder, with the transport cylinder in question or other sheet-guiding cylinder being designed in multiple sizes, preferably at least twice as large.

At least one printing cylinder 22 located in the processing station 06 that has the non-impact printing device 06 is designed to be multiple, in particular triple, preferably quadruple, which means that this printing cylinder 22 has at least as many holding elements on its circumference that there are three or three in a row on its circumference four substrates are arranged or at least can be arranged in a holding manner by a force fit and/or by a form fit. As a rule, each substrate to be held on the circumference of the printing cylinder 22 is assigned at least one holding means or holding element, with those holding elements which are assigned to different substrates being operable independently of one another, ie separately from one another. Holding elements designed as grippers are arranged, in particular, in a channel that is open on the lateral surface of the printing cylinder 22 in question, with the respective channel being in each case on the lateral surface of the printing cylinder in question cylinder 22 extends axially. That means at z. B. four substrates that can be arranged along the circumference of the printing cylinder 22 in question, that the printing cylinder 22 in question has four channels, with at least one holding element being arranged in each channel. In a channel z. B. at least two holding elements can also be arranged, one of these holding elements holding a rear edge in transport direction T of the substrates of a first of these substrates and another of these holding elements holding a front edge in transport direction T of the substrates of one of the first substrates on the circumference of the printing cylinder in question 22 immediately following second substrate holds. A plurality of inkjet printing devices are preferably arranged one after the other along part of the circumference of the first printing cylinder 22, with a radial distance between an ink outlet opening of the inkjet printing device in question and an upper side of the substrate held on the lateral surface of the rotating printing cylinder 22 in question when it passes through the inkjet in question -Printing device is preferably only a few millimeters, in particular only about 1 mm.

In order to improve the support of the substrates on the outer surface of the printing cylinder 22, i. H. to help hold down the substrate lying on the lateral surface of printing cylinder 22, in the direction of rotation of printing cylinder 22 in front of the at least one non-impact printing device 06 arranged on its circumference, e.g. B. a blown air device and / or a pressing element z. B. provided in the form of a smoothing roller or pressing roller, wherein the blown air device and / or the pressing element each orthogonal to the transport direction T of the substrates preferably each extend over their entire width.

The respective sheet is during its transport from one to the next processing station 01; 02; 03; 04; 06; 08; 12 and/or also within these processing stations 01; 02; 03; 04; 06; 08; 12 in each case from the respective transport device having several transport cylinders one behind the other in the transport direction T of the sheets, preferably in each case in a non-positive and/or positive manner by means of holding means, e.g. B. held by suction and / or by grippers.

A quadruple large trained pressure cylinder 22 has a diameter z. B. of about 1,200 mm. A double-sized False Drum has a diameter z. B. of about 600 mm. At least one suction comb with a guide plate is preferably arranged below a transfer drum arranged upstream or downstream of the impression cylinder 22, with substrates transported by the relevant transfer drum being transported in a grazing manner along this guide plate of the comb suction device. The comb suction device is an auxiliary device that supports transported substrates, in which a guide plate is provided instead of an essentially closed support for supporting the substrates to be transported, the guide plate having a plurality of suction openings arranged in a field, particularly in an area below the relevant transfer drum, and in its preferably both opposite edge regions extending in the circumferential direction of the relevant transfer drum has a plurality of tines arranged parallel to one another in the transport direction T of the substrates to be transported, these tines being designed as toothing having long and pointed extensions of the guide plate. In addition, the comb suction device has at least one suction device with which substrates to be supported on the guide plate are sucked in the direction of this guide plate by suction air flowing through the suction openings and generated by the suction device. If the pressure cylinder 22 has in each of its cylinder pits designed as a gripper holding elements for holding substrates to be transported with the relevant pressure cylinder 22, the z. B. formed in the form of a smoothing roller pressing element either spaced, d. H. under training a z. B. on the thickness of the substrate adjustable gap to the lateral surface of this pressure cylinder 22 or the pressing element is employed under pressure on the lateral surface of this pressure cylinder 22, but has undercuts for a gripper passage. Also the z. B. compressible and / or elastic cylinder surfaces of the printing cylinder 22 immediately upstream of the transfer drum preferably have such undercuts for the passage of the grippers arranged on the lateral surface of the printing cylinder 22. As an alternative to the respective undercut, the grippers in question can be lowered in their respective cylinder pit below the lateral surface of the printing cylinder 22 in question.

The pressure cylinder 22 can be designed as a flat suction cylinder. This means that it has fields one behind the other on its lateral surface in the circumferential direction, in each of which a substrate to be printed, e.g. B. is held by suction or at least can be held. For this purpose, several channels end in a suction cylinder in each of its fields, each extending from its interior to its lateral surface, in which a negative pressure is generated or at least can be generated by a suction device in comparison to the ambient air pressure. These channels - also called suction bores - form a suction bore field on the outer surface of the suction cylinder in the respective field. In each suction well field, a substrate lying on the surface of the suction cylinder is sucked in over a large area and thereby held. The size of the respective suction bore area is z. B. depending on the format of the substrate to be held or at least adjustable.

At least or only at the leading end in the direction of rotation of the suction cylinder of each field, a toothing can be provided, in particular in connection with the respective teeth of the toothing each z. B. as a sucker designed holding means is provided, wherein each designed as a sucker holding means are preferably arranged in the area of the teeth of the toothing and not in the area of the tooth gaps of this toothing. The provided in the teeth of the toothing suckers are z. B. arranged in a single extending in the axial direction of the suction cylinder row. The suckers of the suction cylinder are z. B. shortly before a tangent point formed with a feed drum of this suction cylinder is subjected to suction air. In another embodiment of the suction cylinder, grippers are provided at the leading end of each field instead of the suction cups there or in addition to these suction cups. A gripper closure formed by one of these grippers of the suction cylinder takes place, for. B. at the tangent point of this suction cylinder with the smoothing roll, d. H. the gripper closure is carried out at this point in time or in this angular position of the suction cylinder. The direction of rotation of the suction cylinder is indicated by a directional arrow.

Provision can be made for a dryer to be arranged inside a feed cylinder which interacts with a pressure cylinder 22, with which transported from the feed cylinder, e.g. B. previously primed substrates are dried. Such a dryer dries a substrate z. B. by irradiation with infrared or UV radiation and / or by hot air.

Reference List

01

Processing station, feeder, sheet feeder, magazine feeder

02

Processing station, primer application device

03

Processing station, cold foil application device

04

Processing station, offset printing device, flexo printing device

05

-

06

Processing station, non-impact printing device

07

Processing station, intermediate dryer

08

Processing station, painting device

09

processing station, dryer

10

-

11

Processing station, mechanical further processing device

12

Processing station, display

13

swing gripper

14

transfer drum

15

Sprocket, front, rear

16

Chain

17

gripper bridge

18

Alignment means, catch fork

19

sprocket shaft

20

fixing element

21

-

22

pressure cylinder

60

contact pressure cylinder

82

printing unit cylinder

83

Application roller, anilox roller

84

Doctor blade, chamber doctor blade system

T

transport direction

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• WO 2004/013704 A1 [0002]
• EP 2540513 A1 [0003]
• EP 1440351 B1 [0004]
• DE 102015211637 A1 [0005]
• DE 10312870 A1 [0006]
• DE 102014010904 B3 [0007]
• DE 102009000518 A1 [0008]
• DE 102009002580 A1 [0009]
• DE 20006513 U1 [0010]
• DE 102016207398 B3 [0011]
• US 2009/0284561 A1 [0011]
• US 2009/0244237 A1 [0011]
• US 2011/0205321 A1 [0011]
• US 7909454 B2 [0012]
• EP 2610064 A1 [0013]

Claims (10)

Machine arrangement for the sequential processing of sheet-shaped substrates, with several different processing stations (01; 02; 03; 04; 06; 07; 08; 09; 11; 12), which are arranged one after the other in a transport direction (T) for inline processing of the substrates, wherein one of the processing stations (06) has a non-impact printing device (06) that prints on each of the substrates and a printing cylinder (22) that guides the substrate, wherein in the direction of transport (T) after the processing station (06 ) a processing station (09) with a dryer (09) for drying the substrates printed with the non-impact printing device (06) is arranged and in the transport direction (T) after the processing station (09) with the dryer (09) for drying the Substrates at least one further processing station (04; 06; 08) is arranged, which is designed for printing or painting the substrates, characterized in that the processing statuses on (09) with the dryer (09) comprises a chain conveyor for conveying the printed substrates during drying. machine arrangement claim 1 , characterized in that the at least one further processing station (04; 06; 08) is a processing station (08) with a painting device (08) and/or a processing station (04) with an offset printing device (04) and/or a processing station ( 04) with a flexographic printing device (04) and/or a processing station (06) with a non-impact printing device (06). machine arrangement claim 1 or 2 , characterized in that in addition to the processing station (06) having the non-impact printing device (06), a processing station (02) with a primer application device (02) that primes the substrates and a processing station (07) with a substrate-guiding cylinder and a dryer (07) are provided for drying the primer applied to the substrates, with the processing station (02) with the primer application device (02) and the processing station (07) with the substrate-guiding cylinder and the dryer (07) in the transport direction (T) each being in front of the the processing station (06) having the non-impact printing device (06). machine arrangement claim 1 , 2 or 3 , characterized in that the chain conveyor has rear and front chain wheels (15) arranged in pairs and two chains (16) running over a front and a rear chain wheel (15), the chains (16) carrying gripper bridges (17). machine arrangement claim 1 , 2 , 3 or 4 , characterized in that the chain conveyor has chains (16) carrying gripper bridges (17) and an alignment means (18), the alignment means (18) aligning the gripper bridges (17) of the chain conveyor in the transport direction (T) independently of the chains (16). . machine arrangement claim 1 , 2 , 3 , 4 or 5 , characterized in that the chain conveyor has an alignment means (18), the alignment means (18) being designed as a catch fork (18) and being associated with a chain wheel shaft (19) which is included in the chain conveyor and carries chain wheels (15) so that it rotates therewith. machine arrangement claim 5 or 6 , characterized in that the alignment means (18) comprises a catch fork (18) and a fixing element (20) which is movably mounted relative to the catch fork (18), the fixing element (20) moving between a position in which there is a respective gripper bridge (17) fixed to the catch fork (18), and a position in which it releases a respective gripper bridge (17), is designed to be displaceable. machine arrangement claim 1 , 2 , 3 , 4 , 5 , 6 or 7 , characterized in that the chain conveyor has an alignment means (18) rotating about a fixed axis, the alignment means (18) comprising a positioning element which is designed to complement other positioning elements which are designed on gripper bridges (17) comprised by the chain conveyor. machine arrangement claim 1 , 2 , 3 , 4 , 5 , 6 , 7 or 8th , characterized in that the or all processing stations (02; 03; 04; 06; 07; 08; 11; 12) which are arranged in the transport direction (T) after the processing station (09) with the dryer (09) comprising the chain conveyor , are or will be driven by chains and sprockets (15) of the chain conveyor. machine arrangement claim 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8th or 9 , characterized in that a first and a second controllable drive are formed, the first drive covering the processing station (09) with the dryer (09) comprising the chain conveyor and all processing stations (01; 02; 03; 04; 06; 07; 08 ; 11), which are arranged in the direction of transport (T) in front of the processing station (09) with the dryer (09) comprising the chain conveyor, and wherein the second drive drives the processing stations (02; 03; 04; 06; 08; 11; 12 ), In the direction of transport (T) after the processing station (09) with the den Chain conveyor comprehensive dryer (09) are arranged drives.

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