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EP4282657B1 - Plieuse d'une machine d'impression offset à bobines et machine d'impression offset à bobines - Google Patents

Plieuse d'une machine d'impression offset à bobines et machine d'impression offset à bobines Download PDF

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Publication number
EP4282657B1
EP4282657B1 EP23171155.7A EP23171155A EP4282657B1 EP 4282657 B1 EP4282657 B1 EP 4282657B1 EP 23171155 A EP23171155 A EP 23171155A EP 4282657 B1 EP4282657 B1 EP 4282657B1
Authority
EP
European Patent Office
Prior art keywords
transport device
web
signatures
format
speed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP23171155.7A
Other languages
German (de)
English (en)
Other versions
EP4282657A1 (fr
Inventor
Theodor Keilhau
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Manroland Goss Web Systems GmbH
Original Assignee
Manroland Goss Web Systems GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Manroland Goss Web Systems GmbH filed Critical Manroland Goss Web Systems GmbH
Publication of EP4282657A1 publication Critical patent/EP4282657A1/fr
Application granted granted Critical
Publication of EP4282657B1 publication Critical patent/EP4282657B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/0008—Driving devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F1/00—Platen presses, i.e. presses in which printing is effected by at least one essentially-flat pressure-applying member co-operating with a flat type-bed
    • B41F1/16—Platen presses, i.e. presses in which printing is effected by at least one essentially-flat pressure-applying member co-operating with a flat type-bed for offset printing
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F1/00—Platen presses, i.e. presses in which printing is effected by at least one essentially-flat pressure-applying member co-operating with a flat type-bed
    • B41F1/26—Details
    • B41F1/28—Sheet-conveying, -aligning or -clamping devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/08—Cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/54—Auxiliary folding, cutting, collecting or depositing of sheets or webs
    • B41F13/56—Folding or cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/54—Auxiliary folding, cutting, collecting or depositing of sheets or webs
    • B41F13/64—Collecting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F17/00—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for
    • B41F17/02—Printing apparatus or machines of special types or for particular purposes, not otherwise provided for for printing books or manifolding sets
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F19/00—Apparatus or machines for carrying out printing operations combined with other operations
    • B41F19/008—Apparatus or machines for carrying out printing operations combined with other operations with means for stamping or cutting out
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F25/00—Devices for pressing sheets or webs against cylinders, e.g. for smoothing purposes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/50—Piling apparatus of which the discharge point moves in accordance with the height to the pile
    • B65H29/51—Piling apparatus of which the discharge point moves in accordance with the height to the pile piling by collecting on the periphery of cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/18—Oscillating or reciprocating blade folders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/22—Longitudinal folders, i.e. for folding moving sheet material parallel to the direction of movement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/28—Folding in combination with cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/24—Post -processing devices
    • B65H2801/31—Devices located downstream of industrial printers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H29/00—Delivering or advancing articles from machines; Advancing articles to or into piles
    • B65H29/12—Delivering or advancing articles from machines; Advancing articles to or into piles by means of the nip between two, or between two sets of, moving tapes or bands or rollers
    • B65H29/14—Delivering or advancing articles from machines; Advancing articles to or into piles by means of the nip between two, or between two sets of, moving tapes or bands or rollers and introducing into a pile

Definitions

  • the invention relates to a folding apparatus of an offset web printing press. Furthermore, the invention relates to an offset web printing press.
  • Offset printing units of an offset web printing machine are used to print a web-shaped printing material with a fixed printing format.
  • the cylinders of an offset printing unit of an offset web printing machine are designed for a fixed printing format. If a printing material with a different printing format is to be printed on an offset web printing machine, different offset printing units with different printing formats must be available.
  • When executing a print job with a defined printing format only offset printing units with the same printing format are used for printing. After completing a print job with a defined printing format, the offset printing units used for printing can then be changed to execute a new print job with a new printing format.
  • An offset web printing press has a folding device to produce printed products.
  • the basic structure of a folding device on an offset web printing press is known from practice.
  • a folding device on an offset web printing press has at least one cutting device to separate individual signatures from a printed, web-shaped printing material. Before the signatures are separated, a longitudinal fold can be formed on the still web-shaped printing material in the area of a folding former. Alternatively and additionally, a cross fold can be made on separated signatures in the area of a cross folding device and/or a longitudinal fold can be made in the area of a longitudinal folding device.
  • the folding device of an offset web printing press is adapted to the format of the offset printing units. If an offset web printing press has offset printing units with different printing formats, the offset web printing press also has several folding devices in order to further process the printing formats printed with the different offset printing units into printed products in the area of each folding device.
  • Digital web printing presses are different from offset web printing presses. Digital web printing presses do not print with fixed printing forms and therefore fixed printing formats, but rather without printing forms and with variable printing formats. Folding devices for digital web printing presses are known from the state of the art and provide a certain degree of format variability on a digital web printing press.
  • EN 10 2012 103 729 A1 discloses a folding device of a digital web printing machine with a cutting device, via which signatures can be separated from a printed substrate.
  • a longitudinal folding device is arranged upstream of the cutting device.
  • Signatures separated from the web-shaped substrate in the area of the cutting device are accelerated to the peripheral speed of a collecting cylinder using an acceleration device.
  • Cross folds can be made on the separated signatures in the area of a folding jaw cylinder and longitudinal folds can be made in the area of another longitudinal folding device.
  • signatures can be separated from the printed substrate in a variable format, i.e. with different section lengths.
  • EP 1 209 000 B1 discloses a method for producing newspapers on a digital printing machine with two folding stations and two collecting stations. JP2019210140 also reveals a folding device.
  • the present invention is based on the object of creating a format-variable folding device for an offset web printing machine. Furthermore, the invention is based on the object of creating an offset web printing machine with such a folding device.
  • the object is achieved by a folding apparatus of an offset web printing machine according to claim 1.
  • the folding apparatus of an offset web printing machine has a first transport device designed as a belt guide system for a web-shaped printing material.
  • the first transport device is set up in such a way that belts thereof can be driven at a speed that corresponds to the speed of the web-shaped printing material.
  • the folding apparatus of an offset web printing machine further comprises a first cutting device arranged in the region of the first transport device.
  • the first cutting device is designed in such a way that it cuts the web-shaped printing material in a format-variable manner in those sections that are not covered by the belts of the first transport device.
  • the folding apparatus of an offset web-fed printing machine further comprises a second transport device arranged downstream of the first transport device and designed as a belt guide system, the belts of which are offset transversely to the transport direction of the printing material relative to the belts of the first transport device, wherein the second transport device is designed such that belts thereof can be driven at a speed which is greater than the speed of the belts of the first transport device.
  • the folding apparatus of an offset web-fed printing machine further comprises a second cutting device arranged in the region of the second transport device, wherein the second cutting device is designed such that, in order to separate signatures, it cuts the web-shaped printing material in a format-variable manner in those sections which are covered by the belts of the first transport device.
  • the folding apparatus of an offset web-fed printing machine further comprises a signature accelerator in order to accelerate the signatures separated from the web-shaped printing material from the speed of the belts of the first transport device to the speed of the belts of the second transport device.
  • the folding apparatus of an offset web-fed printing machine has the first transport device and the second transport device, which are each designed as belt guide systems.
  • the belts of the second belt guide system are offset from the belts of the first belt guide system, viewed transversely to the transport direction of the web-shaped printing material.
  • the first cutting device is arranged in the area of the first transport device and the second cutting device is arranged in the area of the second transport device.
  • the two cutting devices together cut the printing material across the entire width of the material across the transport direction in a format-variable manner, namely the first cutting device in those areas that are not covered by the belts of the first transport device and the second cutting device in those areas that are not covered by the belts of the second transport device, but are covered by the belts of the first transport device.
  • the belts of the second transport device have a higher speed than the belts of the first transport device.
  • the speed of the belts corresponds to the speed of the web-shaped printing material.
  • the signature accelerator accelerates signatures separated from the web-shaped printing material to the speed of the belts of the second transport device.
  • the speed of the web-shaped printing material upstream of the second cutting device is lower than the speed of the belts of the second transport device.
  • the folding apparatus of an offset web-fed printing machine allows a reliable, format-variable separation of signatures from the web-shaped printing material in the area of the first and second cutting device, a reliable guidance of the printing material and the signatures in the area of the first and second transport device and an acceleration of the signatures from the speed of the first transport device to the speed of the second transport device.
  • the folding apparatus according to the invention is used on an offset web printing machine that has at least two offset printing units that differ in terms of their printing format.
  • the folding apparatus according to the invention makes several folding apparatuses that are designed for different printing formats on offset printing units superfluous.
  • the first transport device is configured such that, for the same number of signatures to be processed per unit of time, the speed of the belts of the first transport device is lower the smaller or shorter the length of the signatures is.
  • the signature accelerator is designed such that it accelerates the signatures from the speed of the belts of the first transport device to the speed of the belts of the second transport device the shorter the length of the signatures.
  • a relative position of the signature accelerator to the second cutting device can be set in a format-variable manner such that the distance between the signature accelerator and the second cutting device in the transport direction of the signatures is smaller the shorter the length of the signatures.
  • the format variability can be provided in a particularly advantageous manner by the above features.
  • the speed of the belts of the first transport device as well as the acceleration of the signatures by the signature accelerator and the distance of the signature accelerator from the second cutting device can be adjusted to suit the format.
  • the first cutting device and the second cutting device are designed as cutting cylinders and can be driven in such a way that when the respective format-variable cut is carried out, a peripheral speed of the respective cutting cylinder corresponds to the speed of the web-shaped printing material, regardless of the length of the signatures. This also makes it particularly advantageous to ensure format variability.
  • the invention relates to a folding apparatus of an offset web printing machine.
  • Fig.1 shows an embodiment of a folding apparatus 10 of an offset web printing machine designed as a book folding apparatus.
  • signatures are separated from a printed printing material web, collected into signature stacks and longitudinal folds are formed on the signature stacks.
  • the invention can be used particularly advantageously in a folding apparatus designed as a book folding apparatus, the invention is not limited to this application.
  • the folding device 10 of the Fig.1 has a first transport device 11, which is designed as a first belt guidance system.
  • the first transport device 11 designed as a first belt guide system, serves to convey a web-shaped, printed printing material 12 in the area of the folding apparatus 10, wherein the first transport device 11 is set up such that belts 13 of the first transport device 11 can be driven at a speed that corresponds to the speed of the web-shaped printing material.
  • the first transport device 11 has a drive motor 14 which drives the belts 13 of the first transport device 11 in such a way that the speed of the belts corresponds to the speed of the web-shaped printing material 12.
  • the folding apparatus 10 has a first cutting device 15, which is arranged in the area of the first transport device 11 designed as the first belt guide system.
  • the first cutting device 15 is set up in such a way that it cuts the web-shaped printing material 12 in a format-variable manner in those areas that are not covered by the belts 13 of the first transport device 11.
  • the first cutting device 15 has a cutting cylinder 16 with cutting blades, which interacts with a counter cylinder 17.
  • the cutting blades of the cutting cylinder 16 are interrupted at the positions at which the belts 13 of the first transport device 11 cover the web-shaped printing material.
  • the folding apparatus 10 has a second transport device 18 designed as a second belt guide system downstream of the first transport device 11.
  • Belts 19 of the second transport device 18 are offset from the belts 13 of the first transport device 11, seen transversely to the transport direction of the transport devices 11, 18, so that the belts 19 of the second transport device 18 release those sections of the printing material 12 that are covered by the belts 13 of the first transport device 11 in the area of the first transport device 11.
  • the belts 19 of the second transport device 18 can be driven by a drive motor 20 in such a way that they are driven at a speed that is greater than the speed of the belts 13 of the first transport device 11.
  • a second cutting device 21 is arranged in the area of the second transport device 18.
  • the second cutting device 21 is designed so that, in order to separate signatures from the web-shaped printing material 12, it cuts the latter in a format-variable manner in those areas that are covered by the belts 13 of the first transport device 11 in the area of the first transport device 11 and thus of the first cutting device 15.
  • the second cutting device 21 cuts through the web-shaped printing material 12 in those areas where the web-shaped printing material 12 is not cut through in the area of the first cutting device 15.
  • the format-variable partial cut of the first cutting device 15 is therefore completed in order to separate signatures from the web-shaped printing material in a format-variable manner.
  • the first cutting device 15 and the second cutting device 21 are synchronized in such a way that their format-variable cuts are aligned transversely to the transport direction of the printing material 12, thus resulting in a continuous cut across the width of the printing material.
  • the second cutting device 21 is also formed by a cutting cylinder 22 and a counter cylinder 23 that interacts with the cutting cylinder 22.
  • the cutting cylinder 22 of the second cutting device 21 carries cutting blades that are interrupted in the area of the belts 19 of the second transport device 18.
  • Fig.3 shows drive motors 24, 25 for the two cutting cylinders 16, 22 of the two cutting devices 15, 21 in order to drive the cutting cylinders 16, 22.
  • the counter cylinders 17, 23 of the cutting devices 15, 21 are also assigned such drive motors in order to drive them.
  • the drive motors serve to dynamically drive the cylinders 15, 22, 17, 23 in order to produce the format-variable section lengths.
  • the speed of the belts 13 of the first transport device 11 corresponds to the speed of the web-shaped printing material.
  • the speed of the belts 19 of the second transport device 18 is greater than the speed of the belts 13 of the first transport device 11, whereby in the embodiment shown the speed of the belts 19 of the second transport device 18 corresponds to the peripheral speed of a signature collecting cylinder 26 arranged in the area of the second transport device 18.
  • signatures separated from the web-shaped printing material 12 can be collected in a variable format to form signature stacks. These signature stacks are transferred to a signature cylinder 27 downstream of the signature collection cylinder 26 and, starting from this signature cylinder 27, are conveyed via a transport device 28 in the direction of a longitudinal folding device 29 in order to form longitudinal folds on the signature stacks.
  • the folding device 10 also comprises a signature accelerator 30.
  • the signature accelerator 30 is installed in the area of the second transport device 18, directly adjacent to the second cutting device 21, in the area of which the signatures are separated from the web-shaped printing material 12. Upstream of the second cutting device 21, the signatures are not yet completely separated from the web-shaped printing material 12.
  • the second cutting device 21, which is synchronized with the first cutting device 15 and serves to complete the separation of the signatures from the web-shaped printing material 12, is arranged immediately adjacent to a transfer area 31 between the first transport device 11 and the second transport device 18 in the area of the second transport device 18.
  • the signature accelerator 30 accelerates the signatures, which are completely separated from the web-shaped printing material 12 in the area of the second cutting device 21, to the speed of the belts 19 of the second transport device 18.
  • the signature accelerator 30 is formed from a pair of acceleration rollers 32, of which Fig.3 only one is visible.
  • Fig.3 shows a drive motor 33 for the acceleration rollers 32.
  • the first transport device 11 is set up such that, with the same number of signatures to be processed per unit of time, the speed of the belts 13 of the first transport device 11 is lower the shorter or smaller the length of the signatures to be separated from the web-shaped printing material 12 in the area of the cutting devices 15, 21.
  • the signature accelerator 30 is designed such that the shorter the length of the signatures, the more it accelerates the signatures from the speed of the belts 13 of the first transport device 11 to the speed of the belts 19 of the second transport device 18.
  • the relative position of the signature accelerator 30 to the second cutting device 21 can be adapted to suit the format.
  • the relative distance between the signature accelerator 30 and the second cutting device 21 can be adjusted via a linear drive 34.
  • the linear drive 34 can move the signature accelerator 30, namely the accelerator rollers 32 thereof, in the direction of the transport direction of the signatures in order to adapt the distance between the signature accelerator 30 and the second cutting device 21 in a format-variable manner in this direction.
  • signatures separated from the web-shaped printing material 12 in the area of the second cutting device 21, which are accelerated to the peripheral speed of the signature collecting cylinder 26 by means of the signature accelerator 30, can be collected in the area of the signature collecting cylinder 26 to form signature stacks, wherein in the embodiment of the Fig.1 the signature collection cylinder 26 is designed as a puncture needle collection cylinder.
  • the signature collection cylinder 26 has several puncture needles 35 distributed over its circumference, whereby in the area of each of these puncture needles 35 several signatures can be collected to form a signature stack.
  • the distance between the puncture needles 35 in the circumferential direction is set to the largest format of the signatures , i.e. for the longest signatures.
  • the distance between the puncture needles 35 in the circumferential direction corresponds at least to the section length of the longest signatures.
  • the circumferential speed of the signature collecting cylinder 26 relative to the speed of the printing material web 12 is greater the shorter the length of the format-variable separated signatures is.
  • the signature collecting cylinder 26, which is designed as a puncture needle collecting cylinder, acts in Fig.1 , 2 a cylinder 37 which presses the signatures onto the puncture needles 35 for threading.
  • the cylinder 37 therefore provides a threading aid for the signatures on the puncture needles 35 of the signature collection cylinder 26.
  • This cylinder 37 preferably has rails made of plastic which tension the signatures when the signatures are collected on the signature collection cylinder 26 so that the puncture needles 35 can securely needle them.
  • the signature collecting cylinder 26 it is also possible for the signature collecting cylinder 26 to be designed as a gripper collecting cylinder.
  • the cylinder 37 serving as a threading aid can be dispensed with.
  • a sensor 36 is also shown, with the aid of which the leading edge of a signature separated from the web-shaped printing material 12 can be detected.
  • This sensor 36 in conjunction with the signature accelerator 30, can ensure that a leading edge of each signature enters the signature collecting cylinder 26 in the correct relative position to its collecting devices, in Fig.1 to its puncture needles 35, so that clean signature stacks can be formed in variable formats.
  • the folding device 10 is designed as a book folding device, in which only a longitudinal fold is formed on the separated signatures in the area of the longitudinal folding device 29. It is possible for a further longitudinal folding device to be arranged upstream of the first transport device 11 and the first cutting device 15 in order to form a longitudinal fold on the printing material that has not yet been severed. It is also possible for the signature collecting cylinder 26 to not only serve to collect signatures, but also to form cross folds on them.
  • the cutting cylinders 16, 22 of the cutting devices 15, 21 and the counter cylinders 17, 23 can be driven by drives 24, 25. This is done with the help of the drive motors 24, 25 in such a way that when the respective cut is carried out, a peripheral speed of the respective cutting cylinder 16, 22 or a peripheral speed of the cutting blades of the respective cutting cylinder 16, 22 corresponds to the speed of the web-shaped printing material in the area of the respective cutting device 15, 21. In this way, the respective cuts can be carried out particularly advantageously.
  • the two cutting devices 15, 21 are synchronized in such a way that the cuts made by them in variable format are aligned transversely to the transport direction of the printing material 12, i.e. they complement each other, so that the cuts in the area of the two cutting devices 15, 21 completely separate signatures from the web-shaped printing material 12.
  • the drive motors 24, 25 of the cutting cylinders 16, 22 and the counter cylinder are highly dynamic motors in order to accelerate and decelerate the cylinders of the cutting devices 15, 21 in accordance with the desired format of the signatures.
  • the drive motors of the cutting cylinders and the counter cylinders of the cutting devices 15, 21 are preferably controlled via an electronic cam control which is stored in a control unit (not shown).
  • the adjustment of the folding device 10 to a new format takes place between two different print jobs with different formats.
  • the format is fixed or unchanged or constant.
  • Fig.4 shows a schematic side view of an offset web printing machine 40 according to the invention, which has the folding apparatus 10 according to the invention of Fig.1
  • the printing material web 12, from which signatures are separated in the area of the folding device 10, is held ready on a roll changer 41 and printed in at least one offset printing unit 42, 43, 44, 45.
  • the offset web printing machine 40 of the embodiment of the Fig.4 has four offset printing units 42, 43, 44 and 45, whereby these printing units 42 to 45 each differ in their printing format.
  • the offset web printing machine 40 has cylinders in the area of each of the printing units 42 to 45, namely forme cylinders 46 carrying printing plates and transfer cylinders 47 carrying transfer forms, which differ in terms of their diameter and thus in terms of their offset printing format.
  • the offset printing unit 44 is active and in its print-on position, while the printing units 42, 43 and 45, which differ in terms of their print format from the print format of the printing unit 44, are inactive and therefore in a print-off position.
  • At least one offset printing unit with a print format corresponding to the print format of the print job is always in its print-on position, while other offset printing units with a different print format are in their print-off position. If, after completing a print job with a defined print format, a new print job with a different print format is to be processed, at least one other offset printing unit of the Offset printing machine 40 is used for printing and is moved to its print-on position, whereas the other offset printing units with a different print format assume their print-off position.
  • the folding apparatus 10 of the offset web printing machine 40 can be adapted to the print format to be printed between two print jobs, in particular by adjusting the signature accelerator 30 in its relative position to the second cutting device 21.
  • the other format-variable features of the folding apparatus 10 have already been discussed in detail above.
  • the folding device 10 is designed for the largest print format in the field of offset printing units.
  • the conversion to smaller formats takes place, as described above, by the format-variable cutting of the printing material web 12 in the area of the cutting devices 15, 21 and by the format-variable transport of the separated signatures, in particular via the signature accelerator 30.
  • an offset web printing press 40 has offset printing units 42, 43, 44, 45 of different printing formats
  • the printing formats that can be printed using the offset printing units 42, 43, 44, 45 can be further processed with one and the same folding device 10, without the need for multiple folding devices.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Rotary Presses (AREA)

Claims (15)

  1. Appareil de pliage (10) d'une machine à imprimer offset à bobines,
    avec un premier dispositif de transport (11), conçu comme un système de guidage de bande, pour un matériau d'impression en forme de bande,
    le premier dispositif de transport (11) étant aménagé de telle sorte que des bandes (13) de celui-ci peuvent être entraînées à une vitesse qui correspond à la vitesse du matériau d'impression en forme de bande,
    avec un premier dispositif de coupe (15) disposé dans la zone du premier dispositif de transport (11),
    le premier dispositif de coupe (15) étant agencé de telle sorte qu'il coupe le matériau d'impression en forme de bande dans des sections de format variable qui ne sont pas recouvertes par les bandes (13) du premier dispositif de transport (11),
    avec un deuxième dispositif de transport (18) disposé en aval du premier dispositif de transport (11) et conçu comme un système de guidage de bande, dont les bandes (19) sont décalées transversalement à la direction de transport du matériau à imprimer par rapport aux bandes (13) du premier dispositif de transport (11),
    le deuxième dispositif de transport (18) étant aménagé de telle sorte que les bandes (19) de celui-ci peuvent être entraînées à une vitesse qui est supérieure à la vitesse des bandes (13) du premier dispositif de transport (11),
    avec un deuxième dispositif de coupe (21) disposé dans la zone du deuxième dispositif de transport (18),
    le deuxième dispositif de coupe (21) étant agencé de telle sorte que, pour séparer des signatures, il coupe la matière d'impression en forme de bande de manière variable en format dans les sections qui sont recouvertes par les bandes (13) du premier dispositif de transport (11), avec un accélérateur de signatures (30) pour accélérer les signatures séparées du matériau d'impression en forme de bande en partant de la vitesse des bandes (13) du premier dispositif de transport (11) jusqu'à la vitesse des bandes (19) du deuxième dispositif de transport (18).
  2. Plieuse selon la revendication 1, caractérisée par un dispositif de pliage longitudinal (29), pour former un pli longitudinal sur les signatures.
  3. Plieuse selon la revendication 1 ou 2, caractérisée par un cylindre d'accumulation de signatures (26) disposé en aval du deuxième dispositif de transport (18), les bandes (19) du deuxième dispositif de transport (18) pouvant être entraînées à une vitesse variable en fonction du format, qui correspond à une vitesse périphérique du cylindre d'accumulation de signatures.
  4. Plieuse selon la revendication 3, caractérisée en ce que le cylindre d'accumulation de signatures (26) est configuré de manière à ce que sa vitesse périphérique augmente proportionnellement à la réduction de la longueur des signatures.
  5. Plieuse selon l'une des revendications 1 à 4, caractérisée en ce que le premier dispositif de transport (11) est configuré de manière à ce que, pour un nombre constant de signatures traitées par unité de temps, la vitesse des bandes du premier dispositif de transport diminue proportionnellement à la réduction de la longueur des signatures.
  6. Plieuse selon l'une des revendications 1 à 5, caractérisée en ce que l'accélérateur de signatures (30) est configuré de manière à ce qu'il accélère les signatures de la vitesse des bandes du premier dispositif de transport (11) à la vitesse des bandes du deuxième dispositif de transport (18) proportionnellement à la réduction de la longueur des signatures.
  7. Plieuse selon l'une des revendications 1 à 6, caractérisée en ce qu'une position relative de l'accélérateur de signatures (30) par rapport au deuxième dispositif de découpe (21) est variable.
  8. Plieuse selon la revendication 7, caractérisé en ce que la distance entre l'accélérateur de signatures (30) et le deuxième dispositif de découpe (21) diminue proportionnellement à la réduction de la longueur des signatures dans la direction de transport des signatures.
  9. Plieuse selon la revendication 8, caractérisée en ce que la distance entre l'accélérateur de signatures (30) et le deuxième dispositif de coupe (21) peut être réglée par un entraînement linéaire (34).
  10. Plieuse selon l'une des revendications 3 à 9, caractérisée en ce que le cylindre d'accumulation de signatures (26) est conçu comme un cylindre d'accumulation à pinces.
  11. Plieuse selon l'une des revendications 3 à 9, caractérisé en ce que le cylindre d'accumulation de signatures (26) est conçu comme un cylindre d'accumulation à pointures perforantes, et en ce qu'un cylindre (37) est prévu pour collaborer avec le cylindre d'accumulation à pointures perforantes afin de tendre les signatures pour les enfiler sur les pointures perforantes (35) du cylindre d'accumulation à pointures perforantes (26).
  12. Plieuse selon l'une des revendications 1 à 11, caractérisée en ce que le premier dispositif de découpe (15) et le deuxième dispositif de découpe (21) sont synchronisés de manière à ce que leurs découpes respectives soient alignées transversalement à la direction de transport du matériau imprimé.
  13. Plieuse selon l'une des revendications 1 à 12, caractérisée en ce que le premier et le deuxième dispositif de découpe (15, 21) comprennent des cylindres de découpe et sont entraînables de manière à ce que, lors de la découpe, la vitesse périphérique de chaque cylindre de découpe corresponde à la vitesse du matériau imprimé en bande.
  14. machine d'impression offset à rouleaux (40),
    avec un changeur de rouleaux (41), qui est conçu pour tenir à disposition un matériau d'impression (12) en forme de bande à imprimer,
    avec au moins deux groupes d'impression offset (42, 43, 44, 45) qui se distinguent en ce qui concerne leur format d'impression et qui sont conçus pour imprimer le matériau d'impression en forme de bande (12) tenu à disposition, en fonction d'un format d'impression d'une commande d'impression, respectivement avec un format d'impression fixé au groupe d'impression,
    où, pour imprimer le matériau imprimé en bande (12), au moins une unité d'impression offset (43) avec le format d'impression spécifié pour la commande d'impression prend une position d'impression active, tandis que l'autre ou chaque autre unité d'impression offset (42, 44, 45) avec un format d'impression différent de celui spécifié pour la commande d'impression prend une position d'impression inactive,,
    avec un appareil de pliage (10) selon l'une des revendications 1 à 13, qui sépare et plie des signatures du matériau d'impression (12) en forme de bande en fonction du format d'impression de la commande d'impression.
  15. Machine d'impression offset à bobines (40) selon la revendication 14, caractérisée en ce que le dispositif de pliage (10) est un dispositif de pliage de livres.
EP23171155.7A 2022-05-10 2023-05-02 Plieuse d'une machine d'impression offset à bobines et machine d'impression offset à bobines Active EP4282657B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102022111571.2A DE102022111571A1 (de) 2022-05-10 2022-05-10 Falzapparat einer Offset-Rollendruckmaschine und Offset-Rollendruckmaschine

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Publication Number Publication Date
EP4282657A1 EP4282657A1 (fr) 2023-11-29
EP4282657B1 true EP4282657B1 (fr) 2024-08-07

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Application Number Title Priority Date Filing Date
EP23171155.7A Active EP4282657B1 (fr) 2022-05-10 2023-05-02 Plieuse d'une machine d'impression offset à bobines et machine d'impression offset à bobines

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US (1) US20230364903A1 (fr)
EP (1) EP4282657B1 (fr)
JP (1) JP2023167008A (fr)
CN (1) CN117021751A (fr)
DE (1) DE102022111571A1 (fr)

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4241810C2 (de) * 1992-12-11 2001-01-04 Heidelberger Druckmasch Ag Formatvariabler Kombinationsfalzapparat
DE59604973D1 (de) 1995-12-27 2000-05-18 Koenig & Bauer Ag Falzapparat mit signaturweiche
ATE264758T1 (de) 2000-11-28 2004-05-15 Hunkeler Ag Verfahren und vorrichtung zur herstellung einer zeitung
US7771336B2 (en) 2003-12-12 2010-08-10 Mitsubishi Heavy Industries, Ltd Folder for rotary press
US7980543B2 (en) 2007-08-10 2011-07-19 Goss International Americas, Inc. Printing press folder with parallel process transport tapes
DE102012103729B4 (de) 2012-04-27 2022-09-08 Manroland Goss Web Systems Gmbh Druckmaschine sowie Herstellverfahren für Druckprodukte
EP3134263B2 (fr) * 2014-04-25 2023-08-30 Koenig & Bauer AG Ligne de production pour la fabrication de produits d'impression
JP6952012B2 (ja) * 2018-06-08 2021-10-20 三菱重工機械システム株式会社 オフセット輪転機の下流側処理装置及びオフセット輪転機

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US20230364903A1 (en) 2023-11-16
JP2023167008A (ja) 2023-11-22
DE102022111571A1 (de) 2023-11-16
EP4282657A1 (fr) 2023-11-29
CN117021751A (zh) 2023-11-10

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