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
  • B41F13/54—Auxiliary folding, cutting, collecting or depositing of sheets or webs
  • B41F13/56—Folding or cutting
  • B41F13/58—Folding or cutting lengthwise

Definitions

• the invention relates to a printing press according to the preamble of claim 1 or 2.
• the width of the pages for four-sided webs according to Walenski, page 81 would be a quarter of the width of the printing cylinder or slightly less if a web with a smaller width than that of the printing cylinder was to be printed.
• the plate cylinder can also be equipped with a reduced number of printing plates in order to print a three, quarter, half or quarter wide web with three, two or one side next to one another. In any case, at least a quarter of the width of the plate cylinder and thus a quarter of the production capacity of the machine remains unused.
• EP 0 814 044 A1 discloses a web guide of a plurality of partial webs cut lengthwise via a longitudinal cutting device to a folding former, which is oriented such that its entry direction runs transversely to the web running direction in the region of the longitudinal cutting device.
• DE 20 39 844 B shows a web guide in a printing press with a longitudinal cutting device, which is positioned in such a way that it divides the web into a 1/3 and a 2/3 partial web.
• the two partial webs are guided on a folding former that can be moved transversely to the web running direction.
• the invention has for its object to provide a printing press with improved web width utilization.
• At least one of the partial webs can be passed through a former.
• the material web is folded in the middle as it passes through the former. It is possible to provide at least one longitudinal cutting device in an apex of the former for cutting the at least one folded partial web in the longitudinal direction of its fold line.
• the printing press preferably has a cross cutter for cutting the partial webs into signatures.
• the printing press can also be provided with a folder.
• the folder can be, for example, a cross folder such as a jaw cylinder or another known device for cross folding.
• the cross cutter can be, in particular, a cutting knife cylinder placed on a folding jaw cylinder of the folding apparatus.
• the printing press can also have a stapling device for stapling the signatures.
• Figure 1 is a schematic representation of part of a known printing press.
• FIG. 2 shows a schematic illustration of part of a first printing press
• FIG. 3 shows a schematic illustration of part of a second printing press
• Fig. 4 is a schematic representation of part of a third printing press.
• FIG. 1 A part of a known printing press when carrying out a semi-commercial print job is shown schematically in FIG. 1.
• a material web 01 in particular paper web 01 or web 01, with a width of 32 "(812.8 mm)
• Products with a page width of 8 "(203.2 mm) are produced with the printing machine.
• the material web 01 is guided over a printing cylinder 02, for example a forme cylinder 02, which is rotatably mounted in a frame 03, and which is directly a plate cylinder 02 or, in the case of indirect printing processes, can be a transfer cylinder 02 rolling in contact with a plate cylinder 02.
• An impression cylinder which presses the material web 01 against the printing cylinder 02 is not shown in Fig. 1.
• the plate cylinder 02 is equipped with two sets of printing plates, each set comprising four printing plates in width, therefore, for each full rotation of the plate cylinder 02, eight fields A; B; C; D; E; F corresponding to one printing plate are formed on the material web 01 ; G; H.
• the fields A; B; C; D are printed by the four printing plates of the first set, while the fields E; F; G; H by de n Printing plates of the second set are printed.
• the fields A; B; C; D; e; F; G; H which are printed on the material web 01 with each revolution of the printing cylinder 02, indicated by diagonally crossed out rectangles.
• the material web 01 is guided via a turning bar 04 into a folding former 06, in which it is longitudinally folded in the middle.
• a folding former 06 in which it is longitudinally folded in the middle.
• FIG. 1 in addition to the former 06, the effect of the former 06 on the fields A; B; C; D; e; F; G; H illustrates: A longitudinal fold is created between fields B and C and between fields G and F.
• a longitudinal cutting device 07 is arranged in an apex of the former 06 in connection with the former 06. It can be switched on as required in order to separate the material web 01 at the longitudinal fold into two sub-webs of the same width one above the other.
• These are broken down into signatures with two sheets in a cross cutter 09, formed by a knife cylinder and an impression cylinder, which rotate together.
• a first of these sheets comprises fields A; B; F; E, and a second of these sheets includes fields C; D; G; H.
• sheets lie one on top of the other in such a way that fields A and D, B and C, E and H, and F and G cover each, as can be seen in the small illustration next to cross cutter 09.
• the signatures arrive at a cylinder 08, e.g. B. a puncture and folding knife cylinder 08, which is provided in a manner known per se with puncture bars or grippers for holding the signatures and with folding knives. From the puncture and folding knife cylinder 08, the signatures to a cylinder 11, e.g. B. Pass folding jaw cylinder 11. The signatures are folded across with a cross fold line on the first sheet between fields A and E and between B and F, and on the second sheet between fields C and G and between D and H. This is shown by the small figure next to cylinders 08; 11th
• the printing press is designed for the processing of material webs wider than the present material web 01 with a width of 32 ".
• the width or usable width b02 of the cylinder 02 is to be understood as its width, which is a maximum pressure or Wrong transfer area represents. In the case of transfer cylinders, this can be, for example, the maximum width that can be occupied by transfer fabrics and, for form cylinders, the maximum width that can be occupied by printed images. This does not include cones, any additional bearer ring width or other auxiliary devices.
• the usable width b02 also essentially corresponds to a maximum web width width b max of the maximum web 19 to be processed (see FIG. 2).
• the maximum web width width b max is either z. B. slightly less than the width b02 of the cylinder 02 designed as a forme cylinder 02 or corresponds to this in extreme cases. If you wanted to produce a product with an 8 "page width with the printing press shown from a wider material web in order to also use this overhang, this wider material web would have to be four page widths of the product wider, thus a total width of 64" (1,625.6 mm) exhibit. This would, however, exceed the width of the printing cylinder 02 and would no longer be processable with the printing press shown.
• FIG. 1 A corresponding part of a printing press is shown schematically in FIG.
• the same reference numerals designate the same components as in Fig. 1.
• a wider web of material 19 with a width of 48 "(1219.2 mm) is processed in the present printing press.
• n 6 printing plates per set
• the number of printing plates n of a set that is to say the number of pages in width, is chosen such that n is a whole and divisible by 3
• twelve fields A; B; C; D; E; F; G; H; I; J; K; L are printed on the material web 19 per revolution of the printing cylinder 02, namely fields A; B; C ; D; E; F from the printing plates of the first set and the fields G; H; I; J; K; L from the printing plates of the second set.
• a longitudinal cutting device 17 is provided, which cuts the material web 19 into a wide partial web 14 and a narrow partial web 16.
• the wide partial web 14 has a width of 32 ", which corresponds to two thirds of the width of the material web 19, and the partial web 16 has a width of 16" (406.4 mm), which corresponds to a third of the width of the material web 19.
• the longitudinal cutting device 17 is placed on a boundary between the second and third fields, that is to say between fields E and D of fields A printed on by the first set of printing plates; B; C; D; e; F and between fields K and J of fields G printed by the second set of printing plates; H; I; J; K; L
• the fields belong to A; B; C; D; G; H; I; J to the wide partial web 14, while the fields E; F; K; L belong to partial web 16.
• the wide partial web 14 is guided over a turning stand 04, while the narrow partial web 16 is guided over a second turning bar 18 such that both partial webs 14 and 16 pass through the former 06, in which the wide partial web 14 is centered between the fields H and I and is folded between fields B and C. Partial web 16 passes through the former 06 unchanged.
• FIG. 2 is also shown with small siblings to clarify the position of fields A; B; C; D; e; F; G; H; I; J; K; L in the various processing steps.
• the folded partial web 16 surrounds the partial web 14 after passing through the folding former 06.
• the partial web 14 it is also possible for the partial web 14 to be guided outside the folded partial web 16.
• At least one of the two turning bars 04; 18 (here at least 04), but advantageously both turning bars 04; 18 has an effective length for deflecting a partial web 14 corresponding to at least two thirds of the width b max of the maximum web 19 to be processed.
• the effective length here is the resulting length to understand which results from the projection of the incoming partial web on the 45 ° or 135 ° inclined turning bar 04; 18 results, that is, the length which is necessary for deflecting the relevant (here two thirds wide) partial web 14. If both turning bars 04, 18 are designed in this way, the variability with regard to the assignment of the two-third-wide partial web 14 to turning bar 04 or 18 and / or the cutting line between D and E or between B and C increases.
• the now-folded partial web 14 is cut lengthwise at the fold point by the slitting device 07, as in the previous example, so that, in contrast to the printing machine from FIG. 1, three partial webs lying one on top of the other with a width corresponding to two pages each 16 "(50.8 mm) are transferred to the cross cutter 09. Further processing is carried out analogously to the printing machine in FIG. 1. As a finished product, a longitudinally folded signature with six sheets and 24 pages leaves the printing machine.
• the present printing machine In contrast to the known printing machine from FIG. 1, it is thus possible for the present printing machine to produce a product by processing a wider material web 19, which also has a page width of 8 ".
• the product has a higher number of sheets and pages.
• the printing machine is therefore also more economical than the printing machine from FIG. 1 with regard to the amount of product pages it produces per cylinder revolution.
• the projection of the cylinder 02 on both sides of the material web 19 is reduced in the printing machine, so that the printing machine is utilized far more effectively than the known one Printing machine from FIG. 1.
• FIG. 3 shows a second embodiment of a printing machine.
• the printing machine of FIG. 3 has two longitudinal cutting devices 17 and 21, which divide the material web 19 into three partial webs 22; 23; Cut 24 each of the same width.
• the longitudinal cutting device 17 is, as in the previous example, on the boundary between second and third fields, that is between fields E and D and between fields J and K, while the slitting device 21 is placed at a boundary between fourth and fifth fields, that is between fields B and C and between fields H and I.
• the width of the partial webs 22, 23, 24 corresponds in each case to two printing plates for two pages in width.
• the partial web 22 includes the fields A; B; G; H, the partial web 23, the fields C; D; I; J, and the sub-web 24, the fields E; F; K; L
• Partial web 22 is guided over the turning bar 04, partial web 23 over a turning bar 26 and partial web 24 over the turning bar 18, all three partial webs 22; 23; 24 then pass through the former 06.
• no longitudinal cutting device is required following the former 06; the partial webs 22; 23; 24 are only folded in the center of the fold former 06 and are broken down into signatures in this folded state by the cross cutter 09 and then transferred to the puncturing and folding knife cylinder 08.
• the signature is folded over as in the examples above.
• the signature is then cut open in the cross cutter 13 on the cross fold.
• the printing machine shown in FIG. 3 delivers two longitudinally folded signatures as a finished product, each of which comprises three sheets and twelve pages.
• FIG. 4 shows a modification of the printing machine from FIG. 3, in which, following the former 06, as in the examples from FIGS. 1 and 2, a longitudinal cutting device 07 is provided which divides the partial webs 22; 23; 24 cuts open after leaving the former 06.
• This provides six partial webs lying on top of each other.
• a cross cutter 09 positioned against the puncture and folding knife cylinder 08 cuts the six partial webs into signatures with six sheets.
• a stapler 27 also positioned against the puncture and folding knife cylinder 08 staples the sheets of a signature together along a line on which the signature is folded over when it is transferred to the folding jaw cylinder 11.
• the finished product has six sheets and 24 pages stapled together.
• a printing press with at least one forme cylinder 02 for printing on a material web 01; 19 and with at least one longitudinal cutting device 07; 17; 21 for cutting the material web 01; 19 in partial webs 14; 16; 22; 23; 24 is provided, the forme cylinder 02 being equipped with printing plates for n pages in width, where n is a natural number that can be divided into three, that n pages are smaller in width and n + 1 pages in width are larger than a width of the forme cylinder 02 , and that the longitudinal cutting device 17; 21 can be placed on a boundary between a k-th and a k + 1-th side, where k is one or two thirds of n.
• the former 06 is preferably oriented such that its entry direction transverse to the web running direction in the area of the longitudinal cutting device 17; 21 runs and / or its entry direction viewed in plan view for the partial web 14; 16; 22; 23; 24 extends essentially parallel to the longitudinal axis of the forme cylinder 02.
• the partial web 14; 16; 22; 23; 24 deflected from this escape by approx. 90 °.
• Each printed web preferably experiences 01; 19 or partial web 14; 16; 22; 23; 24 on the way from the printing unit to the former 06 only one such change in direction from the machine alignment.
• the folding former 06 can advantageously have an effective width b06 of at least half the width b max of the maximum web 01 to be processed.
• the former 06 has an effective width b06 of at least one half of a usable bale length (usable width b02) of the forme cylinder 02.
• the folding former 06 preferably even has an effective width b06 of at least two thirds of the usable width b02 (ie bale length) of the forme cylinder 02 or the maximum width b max .
• the folding former 06 is preferably made narrower than the total usable width b02 (ie bale length) of the forme cylinder 02 or the maximum width b m3X .
• the effective width 06 of the former 06 is the width of the former 06 transverse to the direction of entry in the region of the run-up of the partial web 14; 16; 22; 23; 24 to understand.
• the turning bars can be moved horizontally or in the plane of the incoming and / or outgoing web, so that webs 01; 19 of different widths the partial webs 14; 16; 22; 23; 24 can be correctly aligned with each other and / or the funnel tip.
• the longitudinal cutting device 07 for the longitudinal cut in the area of the fold back can, in the embodiment not shown in FIGS. 2 and 4, instead of behind the former 06 also in front of the former 06, e.g. B. upstream of the former 06 Pull roller, be arranged.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
• Seal Device For Vehicle (AREA)

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• 2004
  • 2004-01-09 DE DE102004001399A patent/DE102004001399A1/de not_active Withdrawn
• 2005
  • 2005-01-04 DE DE502005002159T patent/DE502005002159D1/de active Active
  • 2005-01-04 US US10/585,449 patent/US7661359B2/en not_active Expired - Fee Related
  • 2005-01-04 WO PCT/EP2005/050011 patent/WO2005065949A1/fr active IP Right Grant
  • 2005-01-04 AT AT05701427T patent/ATE380112T1/de not_active IP Right Cessation
  • 2005-01-04 EP EP05701427A patent/EP1718463B1/fr not_active Not-in-force

Non-Patent Citations (1)

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