Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F7/00—Rotary lithographic machines
  • B41F7/20—Details
  • B41F7/24—Damping devices
  • B41F7/36—Inking-rollers serving also to apply ink repellants
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F31/00—Inking arrangements or devices
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F31/00—Inking arrangements or devices
  • B41F31/30—Arrangements for tripping, lifting, adjusting, or removing inking rollers; Supports, bearings, or forks therefor

Definitions

• the invention relates to printing units of a printing press according to the preamble of claim 1, 3 or 7.
• DE 19720 954 A1 discloses a printing unit with a jack inking unit having three distribution cylinders and a dampening unit having distribution cylinders.
• the ink flow takes place from a cylinder of the inking unit remote from the cylinder, in each case via an inking roller in parallel on two distribution cylinders closer to the transfer cylinder and from there via respectively assigned application rollers to the transfer cylinder.
• the three-roller dampening system is always in active connection with one of the inking unit drivers, so that dampening solution / ink emulsion is applied.
• DE 197 50 960 A1 discloses a film inking unit having three distribution cylinders, the ink flow from the distribution cylinder remote from the cylinder to a second distribution cylinder, and from there in parallel via application rollers to the forme cylinder and the third distribution cylinder, from which the ink application is smoothed by means of additional application rollers he follows.
• a film inking system is set forth, wherein both an angle between a metering gap and a film gap is located and an angle between the film nip and a press nip between 70 ° to 110 °, in particular be 'approximately 90 °.
• DE 29 32 105 A1 shows a printing unit with a lifter inking unit and a dampening unit, the dampening unit being movably arranged in such a way that it functions as a three-roller dampening unit and is not connected to the inking unit, and in the other operating mode the dampening cylinder Contact to a Has inking roller of the inking unit.
• a film inking unit is known from DE 38 04 204 A1, wherein in addition to a zone-by-zone metering of the ink flow in the area of the ink fountain for more variable control or for cleaning purposes, ink can be removed from the inking unit via an intermediate roller and a doctor blade device.
• DE 101 57 243 A1 discloses a distribution cylinder of a printing press, the rotary drive of which on one end face and a traversing drive on the other, e.g. B. the drive side is arranged.
• the motor drives the rotor either axially directly or via a pinion on a spur gear of the cylinder.
• a roller of an inking unit is movably arranged in such a way that the ink is transported from a first distribution cylinder in a first position of the roller over rollers of a front ink path from the first distribution cylinder to the distribution cylinder of a rear ink path while in In a second position of the roller, the ink is conveyed in addition to this path directly from the first distribution cylinder to this distribution cylinder of the ink path located at the rear - the ink path at the back thus always leads to color.
• CH 557238 discloses a reversible printing unit whose inking and dampening unit has a total of four distribution cylinders, one depending on the direction of rotation of the forme cylinder Moisture is carried out via one of the two external distribution cylinders viewed in the circumferential direction and dyeing via the remaining three distribution cylinders. The front of two color paths remains in both operating situations.
• DE 40 12 283 A1 also discloses a reversible printing unit whose inking and dampening unit, however, has a total of three distribution cylinders, whereby depending on the direction of rotation of the forme cylinder, dampening via one of the two outside distribution cylinders, viewed in the circumferential direction of the forme cylinder, and dyeing via the respective other two Distribution cylinder takes place.
• the front of the two color paths is retained in both operating situations.
• the invention has for its object to provide a highly flexible printing unit in terms of inking and / or dampening.
• the ink passes from the first distribution cylinder to the forme cylinder optionally or simultaneously (in series or in parallel) via two further distribution cylinders.
• the inking unit can be converted very flexibly to printing conditions of different requirements. The same applies to the printing unit with regard to the optional assignment of a distribution cylinder to the dampening or inking unit, as well as a choice between "pure" dampening (direct) and indirect dampening, with ink and dampening solution already being mixed on a distribution cylinder.
• An embodiment is also advantageous, in which a rotary drive of the dampener is carried out by its own motor, in particular via a (corner) gear.
• the motor is advantageously arranged on a lever.
• Figure 2 is a schematic representation of webs of different widths.
• 7 shows a removal device; 8 shows an ink feed into the inking unit;
• Fig. 16 a drive of the inking rollers.
• a printing press in particular a web-fed rotary printing press for printing on one or more webs B, has a plurality of units 100; 200; 300; 450; 500; 600; 700; 800; 900 for supply, printing and further processing.
• a roll unwinder 100 the web B to be printed, in particular paper web B, is unwound before it is fed via a feed unit 200 to one or more printing units 300.
• Additional printing units 300 can be provided in addition to the printing units 300 provided as standard for multi-color printing (e.g. four pieces for four-color printing), which can then also be used, for example, alternately with one or more of the other printing units 300 for the flying printing plate change.
• a painting unit 450 can be provided in the web path.
• the web B passes through a dryer 500 and, if appropriate, is cooled again in a cooling unit 600 if the drying takes place in a thermal manner.
• a further conditioning device not shown in FIG. B.
• a coating device and / or rewetting can be provided.
• web B can be fed to a folder 800 via a superstructure 700.
• the superstructure 700 has at least one silicone mechanism (not shown in FIG. 1), a slitter and a turning device and a funnel unit.
• the silicone plant mentioned can also be in front of the superstructure 700, e.g. B. in the area of the cooling unit 600.
• the superstructure 700 can furthermore have a perforating unit (not shown in FIG. 1), a gluing unit, a numbering unit and / or a plow fold. After passing through the superstructure 700, the web B or partial webs are guided into a folder 800.
• the printing press additionally has a separate cross cutter 900, e.g. B. a so-called.
• Plano boom 900 in which, for example, a web B not guided through the folder 800 is cut into format sheets and optionally stacked or laid out.
• the aggregates 100; 200; 300; 450; 500; 600; 700; 800; 900 of the printing press have an effective width transversely to the transport direction T of the web B, which the processing of webs B of a maximum width b (Fig. 2) of z. B. allowed up to 1,000 mm.
• the effective width here is the respective width or clear width of the components (eg roller, cylinder, feedthrough, sensor system, travel paths, etc.) which interact directly or indirectly with the web B; 200; 300; 450; 500; 600; 700; 800; 900 to understand, so that the web B is processed in its full width b, conditioned and can be promoted.
• the units 100; 200; 300; 450; 500; 600; 700; 800; 900 in their functionality (material supply, web transport, sensors, further processing) designed such that even partial webs B 'can be processed in the printing press down to a width b' of only 400 mm.
• the aggregates 100; defining or processing a section length a; 200; 300; 450; 500; 600; 700; 800; 900 are designed in such a way that they define, for example, a section length a on web B lying between 540 and 700 mm.
• the section length a is advantageously between 540 and 630 mm.
• the section length a is 620 + 10 mm.
• the units 100; 200; 300; 450; 500; 600; 700; 800; 900 designed in such a way that with just a few changes, the printing press can be designed with a section length of 546 mm, 578 mm, 590 mm or 620 mm.
• the section length a is, for example, standard with four standing printed pages, z. B. A4, in the transverse direction of the web B next to each other and two printed pages (for example a length s) in the longitudinal direction one behind the other.
• z. B. A4 in the transverse direction of the web B next to each other
• two printed pages for example a length s
• other page numbers per section length a are also possible.
• the printing press has several, e.g. B. at least four, here in particular five essentially identically equipped printing units 300.
• the printing units 300 are preferably arranged next to one another and are separated from the web B; B 'run horizontally.
• the printing unit 300 is preferably used as a printing unit 300 for offset printing, in particular as a double printing unit 300 or as an I printing unit 300 with two printing units 301, e.g. B. two offset printing units 301 designed for double-sided printing in the so-called rubber-against-rubber mode.
• At least one of the printing units 300 are arranged upstream and downstream of rollers 302, by means of which an incoming web B; B 'can be guided around the printing unit 300 below or above, a web B guided around an upstream printing unit 300; B 'can be carried out by the printing unit 300, or a web B carried out by the printing unit 300; B 'can be guided around the downstream printing unit 300.
• Fig. 3 shows schematically the arrangement of two over the web B; B 5 cooperating printing units 301, each with a transfer cylinder 303 and a forme cylinder
• the printing unit 300 has for each forme cylinder 304 devices for semi or fully automatic plate feeding 307 or changing a printing form 310.
• At least one or more printing units 300 has additional guide elements 308 closely before and after the nip point of the printing unit 300.
• the path shown in broken lines in FIG. 3 using the guide elements 308 is advantageous.
• the guide elements 308 are preferably embodied as air-flushed bars or rollers. This reduces the risk of abrasion of previously freshly printed ink.
• a washing device 309 is assigned to each transfer cylinder 303.
• the elastic surface of the transfer cylinder 303 can be cleaned by means of the washing device 309.
• the cylinders 303; 304 each have a circumference between 540 and 700 mm, preferably form and transfer cylinders 303; 304 have the same scope.
• the circumferences are advantageously between 540 and 630 mm.
• the section length a is 620 ⁇ 10 mm.
• the printing unit 300 is designed such that cylinder 303; 304 with a circumference of 546 mm, 578 mm, 590 mm or 620 mm. For example, only an exchange of bearing elements or a changed position of the holes in the side frame (and sprue; see below) for the cylinders 303; 304 and an adaptation of the drive (lever, see below).
• the transmission cylinder 303 has at least one elevator (not shown) on its circumference, which is held in at least one channel running axially on the lateral surface.
• the transfer cylinder 303 preferably has only one over the effective length or essentially over the entire width of the web B to be printed; B 'reaching and essentially (except for a shock or a channel opening) extending around the entire circumference of the transfer cylinder 303 elevator.
• the elevator is preferably designed as a so-called metal printing blanket, which has an elastic layer (e.g. rubber) on an essentially dimensionally stable support layer, e.g. B. has a thin metal plate. The ends of this elevator are now inserted into the channel through an opening on the lateral surface and are held there by friction or positive locking.
• the ends are bent / folded (e.g. in the area of its leading end by approximately 45 ° and in the area of its trailing end by approximately 135 °). These ends extend through an opening of a channel which extends axially over the entire width to be used of the transmission cylinder 303 and which, for example, likewise has a locking, clamping or tensioning device.
• the opening to the channel in the area of the circumferential surface in the circumferential direction of the cylinder 304 preferably has a width of 1 to 5 mm, in particular less than or equal to 3 mm.
• the clamping is advantageous pneumatically operated, e.g. B. as one or more pneumatically actuated levers, which are biased in the closed state by means of spring force against the trailing end reaching into the channel.
• a hose to which pressure medium can be applied can preferably be used as the actuating means.
• the inking unit 305 has in addition to an ink supply, for. B, an ink fountain 311 with an adjusting device 312 for regulating the ink flow, a plurality of rollers 313 to 325.
• the ink supply can also be designed as a doctor bar.
• rollers 313 to 325 placed against one another the ink passes from the ink fountain 311 via the inking roller 313, the film roller 314 and a first inking roller 315 to a first distribution cylinder 316.
• the ink passes over at least an inking roller 317 to 320 on at least one further distribution cylinder 321; 324 and from there via at least one application roller 322; 323; 325 on the surface of the forme cylinder 304.
• the ink from the first distribution cylinder 316 is optionally or simultaneously (in series or in parallel) via two further distribution cylinders 321; 324 to the application rollers 322; 323; 325th
• This path is principally independent of the color described below from the first distribution cylinder 316 or from the second distribution cylinder 324 via the inking roller 318 and a third distribution cylinder 321 to the forme cylinder 304.
• a second position shown in solid lines
• the inking roller 317 is (dashed) this is switched off by the downstream distribution cylinder 324, the path of the paint via the second distribution cylinder 324 is interrupted.
• the second distribution cylinder 324 can simultaneously with a roller 328, for. B. applicator roller 328, the dampening unit 306 act together.
• the second Fluid (ink and / or dampening solution) located in the distribution cylinder 324 can then be simultaneously delivered to the forme cylinder 304 via the application rollers 325 and 328 — the rollers 324, 325, 328 and the cylinder 304 are positioned accordingly.
• the ink roller 318 can also advantageously be brought into two positions.
• a first position solid line
• the ink roller 318 takes the ink from the second distribution cylinder 324, which receives the ink from the first distribution cylinder 316 via the ink roller 317 (in its first position).
• the ink is transferred from the inking roller 318, possibly via additional inking rollers 319; 320, a third distribution cylinder 321, and from there via at least one application roller 322; 323 fed to the forme cylinder 304.
• a second position dashex roller 318
• This second position of the inking roller 318 is particularly important when the inking roller 317 is in its second (dashed line) position.
• a direct ink path can thus be achieved via two distribution cylinders 316; 321 or three distribution cylinders 316 arranged in series; 321; Realize 324 - the former regardless of whether, in addition to and parallel to this route, the above-mentioned. first color path is realized via the second distribution cylinder 324 or not.
• the forme cylinder 304 is fed via a first, front application path from the second distribution cylinder 324 via one or possibly two application rollers 325 (328) and a second, rear application path from the third distribution cylinder 324 via one or more assigned application rollers 322; 323 supplied with paint.
• the expression “Front” and “rear” application path refers to the order of contact when the forme cylinder 304 rotates after the ink has been supplied to the transfer cylinder 303.
• the application roller 318 can be brought into a first position or position (dashed lines) in which it removes the ink from the first distribution cylinder 316 and via the application rollers 319; 320 supplies the second distribution cylinder 321.
• the application roller 318 takes off the ink from a third distribution cylinder 324, which receives the ink from the first distribution cylinder 316 via the inking roller 317.
• a direct path of ink can thus be achieved via two or three distribution cylinders 316; 321; 324 realize - regardless of whether an additional and parallel path of the color via only two distribution cylinders 316; 324 is realized or not.
• the inking behavior of the forme cylinder 304 can be changed and adjusted by the inking unit 305 via the roller 318.
• the roller 318 In the first mode of operation, in which the roller 318 is in the first position (shown in dashed lines in FIG. 3), more ink is transferred to the “rear” application path via the second group of rollers 319; 320; 321; 322; 323 (third distribution cylinder 321 and associated inking and application rollers 319; 320; 322; 323) and from there applied to the forme cylinder 304 than in the mode of operation in which the roller 318 is in its second position the backward application path is only removed from the second distribution cylinder 324.
• the ink application via the first group of rollers 324; 325 and possibly 328 is reduced or increased from the second distribution cylinder 324 to the forme cylinder 304.
• rollers or distribution cylinders assigned to the inking unit 305 or the dampening unit 306 are understood here to mean those rollers or distribution cylinders which have their inking and dampening units operated separately Basic function, ie in this example a distribution cylinder 329 in the dampening unit 306 and three distribution cylinders 316; 321; 324, are assigned in the inking unit 305 with separate dampening solution and ink application.
• the roller 328 can also preferably be moved into two operating positions, wherein in a first position (solid line shown) it is set against the second distribution cylinder 324 as set out above and in a second position (shown in dashed lines) ) is turned off from this.
• the contact can be made from the application roller 328 of the dampening unit 306 to the distribution cylinder 324 (“of the inking unit” 305), where an ink / fountain solution emulsion is formed. In both positions, however, it acts with the forme cylinder 304 on one and with another Roller 329 of the dampening unit 306, for example a friction roller 329, in particular an iridescent chrome roller 329.
• the chrome roller 329 receives the dampening solution from a dampening device, for example a roller 330, in particular an immersion roller 330, which is fed into a dampening solution supply 332.
• a dampening device for example a roller 330, in particular an immersion roller 330
• a water tank is immersed.
• a drip plate 335 is preferably arranged below the water tank to collect condensate water which forms on the water tank and which, in an advantageous embodiment, can be heated, for example by means of a heating coil.
• rollers 317; 318; 328 Under the mobility of the rollers 317; 318; 328 is not to be understood as the customary adjustability given for adjustment purposes, but rather the operational mobility for switching from one to the other operating position.
• actuating means and / or stops e.g. adjustable
• drives are provided - both for one and for the other operating position.
• there is a larger permitted travel or the roller arrangement is selected accordingly so that the two positions can be reached by the usual travel.
• the chrome roller 329 and the roller 330 are each movable in a direction perpendicular to their axis, e.g. B. stored in levers, so the position the applicator roller 328 can be changed in the manner described above.
• the distribution cylinder 316; 321; 324 of the inking unit 305 and the roller 329 of the dampening unit 306 are axially movable in side frames (not shown in FIG. 3) so that they can perform a traversing movement.
• the traversing movement takes place for the distribution cylinder 316; 321; 324 and the roller 329 via corresponding gear coupled to the respective rotary drive.
• a bearing is also provided for the roller 328 and the application roller 323, which allows a traversing.
• the axial movement is only initiated via friction of the cooperating lateral surfaces and not via a corresponding traversing mechanism.
• a bearing that enables degrees of freedom in the axial direction can also be provided for the two application rollers 322 and 325.
• FIG. 4 an operating mode is shown schematically (only for the upper printing unit 301), the roller 317 being set off from the second distribution cylinder 324 (shown in broken lines), remaining on the distribution cylinder 316 (shown in broken lines), and in one development at the same time to the Roller 314 is employed.
• the roller 318 is removed from the second distribution cylinder 324 and placed against the first distribution cylinder 316.
• the ink path thus takes place via the first and third distribution cylinders 316; 321.
• the application roller 328 of the dampening unit 306 is in contact with the second distribution cylinder 324, so that dampening solution is applied directly and via a total of five rollers 324, 325 and 328 to 330 (five-roller dampening unit).
• One of three distribution cylinders 316; 321; 324 of the inking unit 305 and an application roller 325 can thus be assigned to the dampening unit 306 by the adjustability of the roller 317 and possibly 318.
• This mode of operation of dyeing and dampening unit 305 is particularly suitable; 306 when operating with special inks, in particular with inks with high metallic components, and / or if for other reasons (e.g. emulsifying behavior and or unnecessary roller contamination) no indirect dampening is to take place.
• FIG. 5 shows schematically (only for the upper printing unit 301) an operating mode, the roller 328 being set off from the second distribution cylinder 324 (solid line shown), but remaining set on the roller 329 and on the forme cylinder 304. Moisture is carried out only via the three rollers 328 to 330.
• inking can be carried out simultaneously over all rollers 322; 323; 325 of the inking unit 305 with the application rollers 322; 323; 325 done.
• the application rollers 322; 323; 325 turned off from the forme cylinder 304 (indicated by arrows) and the drive of the inking unit 305 z.
• the latter variant is particularly suitable for the operating mode of dyeing and dampening unit 305; 306 in so-called blind plate operation, d. H. if the associated forme cylinder 304 or its printing form does not have an image to be printed.
• the adjustability of the roller 328 thus makes it possible to choose between direct dampening in the "three-roller dampening unit” and - depending on the position of roller 317 - indirect dampening or direct dampening in the "five-roller dampening unit".
• the rollers 313, 314 and 315 placed against one another are arranged with respect to one another in such a way that, in the position of contact, connections V1, V2 of the axes of rotation of the rollers 313 and 315 with the respective axis of rotation of the roller 314 essentially form a right angle of approximately Form 90 °, ie 80 ° ⁇ ⁇ 100 °, in particular 85 ° ⁇ 95 °.
• a connection V3 between the contact point for. B.
• the point of contact of the actuating device 312, on the roller 313 with the axis of rotation of the roller 313 also essentially a right angle, ie 80 ° ⁇ ⁇ 100 °, in particular 85 ° ⁇ ⁇ 95 °, for connecting the axes of rotation of the rollers 3 3 and 314.
• the angles ⁇ are oriented in such a way that the three imaginary connections V1, V2 and V3 together result in a “zigzag pattern”. This arrangement is particularly advantageous with regard to the decoupling of undesired movements when radial forces are applied and with regard to reduced contamination through paint mist.
• the arrangement of the rollers 313 and 314 is selected such that the axis of rotation of the roller 314 designed as a film roller 314 lies above the axis of rotation of the duct roller 313.
• the arrangement is selected such that, taking into account the direction of rotation of the rollers 313; 314 the incoming side of the nip point is lower than the outgoing side.
• the film roller 314 is designed on its outer surface with a surface structure 344, which only has an average load-bearing surface 346, e.g. B. elevations 346, from 5 to 15%, in particular 5 to 11% in the effective area and intermediate recesses 347; 348.
• the stated proportion of the supporting surface 346 in the total effective outer surface can, in principle, be implemented in a wide variety of ways by means of uniformly distributed cutouts, cutouts, etc. of various patterns.
• FIG. 6 schematically shows a particularly advantageous embodiment of the surface structure 344, which can be manufactured in a simple manner and, moreover, shows favorable behavior with regard to the absorption and delivery of the color.
• the surface structure 344 of the film roller 314 here consists of two groups of the development of the roller 314 rectilinear grooves 347; 348.
• the grooves 347; 348 of each groove subgroup run parallel to one another and are evenly distributed over the circumferential surface of the film roller 314.
• the grooves 347 of the first groove subgroup run at a swirl angle ⁇ which is in the range of z. B. 20 ° and 40 °, in particular 25 ° and 35 °, is distributed relative to the longitudinal axis of the film roller 314 over the circumferential surface of the film roller 314.
• the grooves 348 of the second groove subgroup run at a swirl angle ⁇ which is in the range of z. B.
• the grooves 347; 348 of the two groove subgroups are arranged so that they intersect on the circumferential surface. Through the intersecting grooves 347; 348 are between the grooves 347; 348 the diamond-shaped elevations 346 are formed.
• a depth t347; t348 of grooves 347; 348 is, at least at its deepest point, advantageously 0.2 to 0.6 mm, the depths t347; t348 of the two grooves 347; 348 are preferably of substantially the same size.
• a width b347 of the grooves 347 is advantageously 1.0 to 1.8 mm, a width b348 of the grooves 348 is advantageously 0.7 to 1.6 mm.
• the mutually parallel grooves 347; 348 should be spaced apart such that the side lengths of the diamond-shaped elevations 346 on the one, longer side (e.g. adjacent to the groove 348) 0.5 to 1.0 mm, and on the other, shorter side (e.g. . adjacent to groove 347) are 0.4 to 0.7 mm.
• the production of the grooves 347; 348 is carried out in an advantageous embodiment by removing surface material 349, z. B. by milling. They preferably have a cross section in the form of an arcuate section. This circular arc section in turn has for the wider grooves 347 z. B. a radius in the range between about 0.6 and 1.0 mm, for the narrower grooves 348 between 0.4 and 0.8 mm.
• the millings of the grooves 347 which spiral around the circumferential surface are then, for example, at a distance a347 of the center lines of 1.85 to 2.45 mm, the millings of the grooves 348 are, for example, at a distance a348 of the center lines of 1.35 up to 1.95 mm.
• the surface material 349 is, for example, as a plastic (e.g. polyamide), in particular as a sinter-coated plastic on a metallic roller base 351, e.g. B. a metal tube, not shown, with a preferred wall thickness of 7.0 to 12 mm.
• a thickness d349 (uninjured, ie in the region of the elevation 346) of the surface material 349 is advantageously 0.8 to 1.2 mm.
• the inking unit 305 advantageously has at least one further roller 326, by means of which ink can be removed from the inking unit 305 in the ink path, in particular in front of the first distribution cylinder 316. This takes place in that a corresponding removal device 333 can be set on this roller 326 itself, or, as shown, on a roller 327 cooperating with it (FIG. 3).
• FIG. 7 shows the removal device 333 as it interacts with the roller 327 (possibly also roller 326, but adapted to the direction of rotation).
• a plurality of z. B. executed as stripping elements 334 sections 334, z. B. scraper elements 334.1 to 334.10, adjustable on the outer surface.
• the removal device 333 has at least one such stripping element 334 at least in an edge region of the roller 327.
• no stripping elements 334 are provided in the area of a central zone 340 (inactive zone 340) of the roller 327 z. B. no stripping elements 334 are provided.
• wiper elements 334 can also be provided in zone 340, but these are adjusted or adjusted as required so that they do not come into contact with the lateral surface when the tapping device 333 is turned on.
• ink can be taken from the corresponding section of the roller 327 and z. B. collected in a container 336 and returned in a further development of the ink supply.
• This section represents a zone 331, in particular contact zone 331, which is effective with regard to the ink removal.
• the roller 315 and therefore also approximately the same, is thus conveyed via the roller 327 the following ink path up to the form cylinder 304 (partly also via back coloring).
• an ink flow in the inking unit 305 can thus be adjusted to a web width b; b 'of the web B to be printed; B 'can be set.
• a group of a plurality of stripping elements 334 here five stripping elements 334.1 to 334.5 and 334.6 to 334.10, are arranged from each edge region of the roller 327, essentially flush with one another, next to one another.
• a section (corresponding to a minimum width b 'of a web B' to be printed) without stripping elements 334 can be provided between the two groups.
• the effective scraper elements 334 are defined here by the manual setting of knives 339 via respective adjusting means 341, e.g. B. Lever mechanisms 341.
• the setting of the knives 339 can, however, in an advantageous development also be carried out by individual drives, for example by means of small pressure medium cylinders, magnetically, piezoelectrically or by motor. Remote-controlled drives, for example from a control center and / or a machine control, are advantageous here.
• the stripping elements 334 are not switched on or off as a whole, but instead are set individually for each stripping element 334, e.g. B. by individual drives, for example by means of small pressure medium cylinders, magnetically, piezoelectrically or by motor. Remote-controlled drives, for example from a control station and / or a machine control, are also advantageous here.
• a procedure described below for setting the inking unit 305 is advantageous: when setting the color flow to the product and / or the width b; b 'of the web B to be printed; B 'the ink flow from the ink fountain 31 into the inking unit 305 is carried out zone by zone by setting passage gaps between ink fountain 311 and the first roller 313 (FIG. 8). This is done e.g. B. remotely operated by setting color meters 343 by means of drives not shown in FIG. 8. If a centrally running web B 'is printed, which is only partially wide, z. B. basically closed at least one of the ink knife 343 per side of the roller 313.
• the number of color knives 343 to be closed based on the width of the web depends on the width b; b 'of lane B; B '.
• color meters can of course be closed depending on the printed image, ie the color requirement in the respective zones of the area to be printed.
• the width of the web B; B 'dependent basic setting is now carried out automatically in an advantageous embodiment by the machine control depending on the web width to be printed.
• This information lies e.g. B. in the product information and / or in the reel changer 100 before.
• the information about the web width or the information about closed color knife 343 is now used to control the above.
• the stripping elements 334 or knives 339 to be closed are determined and the corresponding drives are activated.
• the control of color knives 343 on the one hand and the knives 339 or stripping elements 334 on the other hand can be carried out on the basis of commonly available information - e.g. B. across the web width - also take place in parallel.
• the cylinders 303; 304 and rollers 313 to 330 of dyeing and dampening unit 305; 306 are in each case on the end face in or on side frames 352; 353 or frame walls 352; 353 stored (see Fig. 9).
• FIG. 9 only the rollers 329 and 330 with their fastening and drive facial expressions, which are described in more detail below, and the Main drive 354 of the printing unit 300, also explained below.
• One of the frame walls 352; 353, in particular that on the side of the main drive 354, is formed in one or more parts such that a lockable cavity 356, for. B. lubricant chamber 356, can be formed, which extends at least over an area that all cylinders 303; 304 and rotationally driven rollers covered.
• a detachable cover 357 for the cavity 356 is provided on the end face.
• the other frame wall 352 also forms a cavity 359 with a detachable cover 358 arranged on the end face, in which, among other things, the switching and control devices 361 (dashed lines), e.g. B. in the form of a control cabinet 361, the printing unit 300 are housed.
• the front-side arrangement of the switching and control devices 361 has the advantage that the space between two printing units 300 can be accessed from both sides. An operating side of the printing machine can thus be freely selected. This is further supported by the fact that a longitudinal cross member 362 connecting the printing units 300 can optionally be arranged on the frame wall 352 or 353.
• a longitudinal cross member 362 connecting the printing units 300 is attached to one of the frame walls 352; 353, e.g. B. optionally arranged.
• the approach 363 is advantageously in one piece with the side frame 352; 353 and is preferably produced in a casting mold as a so-called sprue 363.
• the sprue 363 points through it and the alignment of the frame wall 352; 353 reaching holes for receiving bearings, not shown.
• the sprue 363 extends, in particular in a coherent manner, over the end region of the form and transfer cylinders 303; 304, but not over front areas of iridescent and / or changeable inking or dampening rollers.
• the rollers 329 and 330 are on the inside of the frame walls 352; 353 in levers 364; 366 about a pivot axis S329 parallel to the respective axis of rotation; S330 pivoted (see Fig. 11).
• the pivot axis S329 coincides with the axis of rotation of the roller 330 and is moved along with the roller 330 when the lever 364 is pivoted.
• the swivel axis S330 of the roller 330 is fixed to the frame.
• a rotary single drive 367; 368 in particular a drive motor 367; 368, which z. B.
• the respective roller 329; 330 drives mechanically independently of one another in rotation.
• the drive motor 367; 368 is preferably an electric motor 367; 368, in particular three-phase motor 367; 368 executed.
• the setting of the speeds or the dampening can advantageously from the control center, for. B. from the color desk, where it is also displayed.
• the machine control has a correlation between machine speed and dampening or speed, by means of which the speed of the two rollers 329; 330, in particular the roller 330, can be predetermined.
• the lever 366 of the roller 330 can have an adjustable stop 365, by means of which it is supported in the position of the dampening unit 306 on a stop 370 of the application roller 328 interacting with the roller 329.
• the respective lever 364; 366 is driven by a drive 372; 373, in particular cylinders 372; 373, swiveling.
• Rollers 329; 330 are preferably on both sides in corresponding levers 364; 366 each with drives 372; 373 for the pivoting movement on the two frame walls 352; 353 stored (see Fig. 11).
• the roller 329 has a traverse drive 374 on the end face opposite the rotary drive, in particular a gear 374 for generating an axial traverse movement from the rotary movement. This gear 374 is preferably arranged outside the roller body in order to avoid selective generation of frictional heat in the roller 329.
• the gear 374 is located on the drive side of the printing unit 300, ie in the area of the same frame wall 353 as the main drive 354 and / or a drive train of the printing couple cylinders, but the rotary drive of the rollers 329 and 330 on the opposite side, ie in the region of the frame wall 352.
• the gear 374 can be an open gear 374 in this be arranged.
• the roller 329 is on the side remote from the gear 374 on a with the motor shaft via the corner gear 369 and an angle-compensating coupling 375, for. B. a curved tooth coupling, and a shaft 376 via z. B.
• the bearing 377 is advantageously designed as a torque-transmitting ball bushing, balls z. B. run both in the longitudinal grooves of the shaft 376 and the bearing body, transmit a torque, but keep the bearing body axially movable relative to the shaft 376.
• the bearing body is, for example, connected to the roller body of roller 329 in a rotationally secure manner.
• FIG. 14 shows an advantageous embodiment of the transmission 374 in the region of the other end of the roller 329, which is basically based on the function of a cam mechanism with a curved groove 400 and an engaging stop 401.
• An outer sleeve 378 with internal teeth is fixedly connected to the lever 364 and carries the stop 401 (or the groove 400).
• An inner sleeve 381 is connected via a flexible but torsionally rigid connection 379 (articulated or flexible), which carries the groove 400 (or the stop 401) connected to a toothed ring 380 with external teeth.
• the toothed ring 380 is rotatably mounted on an eccentric 382, which is rigidly connected but eccentrically to the axis of rotation of the roller 329 via a shaft 385.
• the eccentric 382 rotates and allows the toothed ring 380 to roll in the lever-fixed internal toothing, the inner sleeve 381 being set in rotation with respect to the lever-fixed outer sleeve 378.
• a reduction ratio between the rotation of the roller 329 and the inner sleeve 381 is determined by the tooth ratio between the internal toothing and the toothed ring 380.
• the axial movement of the inner sleeve 381, which is forced by the curve of the groove 400, is transmitted as a traversing movement to the roller 329 via the connection 379 which can be loaded under pressure and tension, a bearing which can be loaded under pressure and tension between the eccentric 382 and the toothed ring 380 and the shaft 385.
• the arrangement of the oscillating roller 329 or the roller 330 in levers 364; 366, the rotary single drive over the lever 364; 366 associated drive motors 367; 368 if necessary via corner gear 369; 371 and, in the case of traversing, the arrangement of drive motor 367; 368 and traversing gears 374 on the described sides of the machine can be transferred in the same way to one or more of the rollers of the inking unit 305 and should also be understood in this way.
• the cylinders 303 are driven; 304 of the printing unit 300 via a main drive 354, e.g. B. an electric motor 354 fixed to the frame, in particular via an electric motor 354 which can be regulated with respect to its angle of rotation, and which is advantageously water-cooled.
• 15 shows the arrangement of the drive viewed from the frame wall 353 to the outside. With its pinion 383 (dashed arrow) not visible in FIG. 15, the electric motor 354 does not drive directly onto a drive wheel 386; 387 one of the cylinders 303; 304, but via an intermediate wheel 384.
• the intermediate wheel 384 is mounted in a lever 388, which is in principle pivotably mounted about an axis of rotation R383 of the pinion 383
• the position of the electric motor 354 with respect to the frame wall 353 of the frame can be easily adapted to different cylinder sizes (and thus different sizes of the drive wheels 386; 387) for various pressure units 300.
• the lever 388 is pivoted during assembly such that the intermediate wheel 384 is in optimal engagement with the relevant drive wheel 386; 387 stands.
• Fixing elements 389 e.g. B.
• bolts 389 and corresponding bores, not shown (on the drive unit and / or in the frame wall 353) are provided, by means of which the aligned lever 388 can be fixed after assembly in the relevant position with respect to the frame wall 353 and / or the electric motor 354.
• the bores relevant to the format in question are preferably already prepared in the manufacture of the components in the factory.
• the lever 388 is fixed in a different angular position with respect to the vertical than in a printing unit 300 or printing machine for a second format (section length a), the electric motor 354 being in its position with respect to the frame wall 353.
• the drive from the intermediate wheel 384 to any of the drive wheels 386; 387 take place.
• the drive is preferably first carried out on the drive wheel 387 of one of the two forme cylinders 304. From there, the drive wheel 386 of the associated transfer cylinder 303 is driven, from there onto the other transfer cylinder 303 and finally onto the second forme cylinder 304.
• the drive wheels 386; 387 are non-rotatable, e.g. B. via pin, with the respective cylinder 303; 304 connected.
• the rotational drive on one or more rollers 313 to 327 of the associated inking unit 305 takes place via further drive wheels 391 connected in a rotationally fixed manner to the two forme cylinders 304.
• the forme cylinder 304 is advantageously used for the forme cylinder 304; 321; 324 rotationally driven via a positive drive connection, the duct roller 313 has its own rotary drive, for. B. own, mechanically independent drive motor, not shown, on.
• the remaining rollers 314; 315; 317 to 320, 322; 323 and 325 to 327 of the inking unit 305 are only Rotationally (and possibly axially, see above) also driven by friction.
• Drive wheel 391 is advantageously connected to drive wheels 393; 394 of the two distribution cylinders 321; 324 driven (Fig. 16).
• the intermediate wheel 392 is preferably designed such that it can be engaged or disengaged so that the corresponding drive train and the forme cylinder 304 can be mechanically separated from one another (the drive train (not shown) in the lower printing unit 301 takes place accordingly).
• the drive wheel 393 of the distribution cylinder 324 drives via a further intermediate gear 395 to a drive wheel 396 of the distribution cylinder 316.
• the drive or intermediate wheels 392 to 396 are preferably designed as gear wheels 392 to 396.
• the drive connections are designed such that axial movement of the distribution cylinders 316; 321; 324 is made possible.
• the printing unit 301 in an advantageous embodiment has the device 307 for - at least partially automated - changing of a printing form 310 on the associated form cylinder 304.
• the device is designed in two parts and has a in the area of a nip between the form and transfer cylinder 303; 304 arranged pressing device 397, also called “interchangeable semi-automatic” 397, and a structurally separate magazine 398 with feed and receiving devices for the printing forms 310.
• the printing unit 300 has a device for influencing the fan-out effect 399, ie for influencing a change in the transverse extent / width of the web B, for example caused by the printing process (in particular the moisture), from printing point to printing point.
• a device for influencing the fan-out effect 399 ie for influencing a change in the transverse extent / width of the web B, for example caused by the printing process (in particular the moisture), from printing point to printing point.
• at least one nozzle is arranged on a traverse in such a way that gas, in particular air, flowing out of it crosses the web B; B 'is directed.
• Bahn B; B ' is more or less corrugated when passing through this area depending on the strength of the current, which is a Correction of width b; b 'and the lateral alignment results in each partial area of the printed image.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Inking, Control Or Cleaning Of Printing Machines (AREA)
• Printers Or Recording Devices Using Electromagnetic And Radiation Means (AREA)
• Manufacturing Of Printed Wiring (AREA)
• Printing Methods (AREA)

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• 2003
  • 2003-11-11 DE DE10352616A patent/DE10352616A1/de not_active Withdrawn
• 2004
  • 2004-07-07 WO PCT/EP2004/051376 patent/WO2005007409A2/fr active Application Filing
  • 2004-07-07 US US10/564,290 patent/US20060272527A1/en not_active Abandoned
  • 2004-07-07 DE DE502004008056T patent/DE502004008056D1/de not_active Expired - Fee Related
  • 2004-07-07 EP EP04741969A patent/EP1644194A2/fr not_active Withdrawn
  • 2004-07-07 AT AT07113071T patent/ATE407803T1/de not_active IP Right Cessation
  • 2004-07-07 EP EP07113071A patent/EP1864801B1/fr not_active Expired - Lifetime

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