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
  • B41F13/08—Cylinders
  • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
  • B41F13/26—Arrangement of cylinder bearings
  • B41F13/32—Bearings mounted on swinging supports
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F13/00—Common details of rotary presses or machines
  • B41F13/004—Electric or hydraulic features of drives
  • B41F13/0045—Electric driving 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
  • B41F13/008—Mechanical features of drives, e.g. gears, clutches
• • 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
  • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
  • B41F13/26—Arrangement of cylinder bearings
  • B41F13/30—Bearings mounted on sliding supports
• • 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
  • B41F13/24—Cylinder-tripping devices; Cylinder-impression adjustments
  • B41F13/34—Cylinder lifting or adjusting devices
  • B41F13/36—Cams, eccentrics, wedges, or the like
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41F—PRINTING MACHINES OR PRESSES
  • B41F7/00—Rotary lithographic machines
  • B41F7/02—Rotary lithographic machines for offset printing
  • B41F7/12—Rotary lithographic machines for offset printing using two cylinders one of which serves two functions, e.g. as a transfer and impression cylinder in perfecting machines
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
  • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
  • B41P2213/00—Arrangements for actuating or driving printing presses; Auxiliary devices or processes
  • B41P2213/70—Driving devices associated with particular installations or situations
  • B41P2213/73—Driving devices for multicolour presses
  • B41P2213/734—Driving devices for multicolour presses each printing unit being driven by its own electric motor, i.e. electric shaft

Definitions

• the invention relates to methods for turning cylinders on and off according to the preamble of claim 1, 3, 7, 8, 9 or 20.
• EP 08 78 302 A1 discloses turning a cylinder on and off, the cylinder being regulated when pivoted by means of an eccentric such that adjacent cylinders do not perform any sliding movement.
• the pivoting movement of the cylinder by means of the eccentric is controlled in such a way that its rotation is accompanied by a rolling movement of an adjacent cylinder.
• EP 08 62 999 A2 discloses a double printing unit with two transfer cylinders acting together, which are mounted in eccentric or double eccentric bushes for the purpose of turning them on and off. In another version, they are mounted in levers which are pivotally mounted eccentrically to the forme cylinder axis.
• the invention has for its object to provide methods for switching cylinders on and off.
• the method enables the possibility of safe and / or low-wear parking, in particular for a pressure drop in the event of a web break.
• An advantageous variant enables quick and safe printing shutdown without great technical effort.
• the method is particularly suitable for printing units of a printing press, which, for. B. is compact, low-vibration and robust built by linear arrangement of the cylinders.
• the transfer cylinders can be mounted so that they can be adjusted at a distance from the associated transfer cylinder and, if necessary, the inking and, if available, dampening units, the transfer cylinders can be turned on and off from one another and from the assigned forme cylinders simply by moving the transfer cylinders.
• a linear movement of the cylinders is made possible by a movement specially selected in the area of the pressure point and at the same time avoiding devices and movements of the forme cylinders are avoided.
• the transfer cylinders which are mounted, for example, in slides in linear guides in or on the side frame, are moved essentially perpendicular to the plane of the cylinder axes for starting and stopping.
• the transfer cylinders are in levers for this purpose arranged, which are mounted eccentrically to the forme cylinder axis.
• the transfer cylinders are mounted in double eccentric bushings, which, at least in the area close to the pressure point, enables an almost linear movement largely perpendicular to the plane of the cylinder axes.
• cylinders or rollers in printing units of the “pressure on” operating state ie a pressure on position
• the necessary radial movement of the rollers also contains a movement component in tangential direction, the size of which depends on the design (eccentric, lever, linear guide, as well as its angle to the nip point) of the adjusting device. If the speed of the effective outer surfaces in the nip point arises from the adjustment in relation to the operating state, this implies due to the Surface friction of the roller materials used is a tangential frictional force component which is opposite to the adjustment movement. The adjustment movement is thereby inhibited or its speed is limited. This is particularly important in the case of printing unit cylinders in the case of so-called "winders", since here the high pressure occurring occurs Large friction forces also result.
• Figure 1 is a schematic representation of a double printing unit.
• FIG. 2 shows a schematic illustration of a three-cylinder offset printing unit
• Fig. 3 is a schematic representation of a double-wide double printing unit
• Fig. 4 is a schematic representation of a double-wide double printing unit, highly symmetrical
• FIG. 5 shows a schematic illustration of a double printing unit in section BB according to FIG. 1 with linear travel
• FIG. 6 shows a schematic representation of a double printing unit in section BB according to FIG. 1 with a curved adjustment path;
• Fig. 7 is a schematic representation of an H-printing unit with linear travel and pairwise drive
• Fig. 8 is a schematic representation of an H-printing unit with a curved travel and paired drive
• FIG. 9 is a side view of a linear guide for transfer cylinders
• FIG. 10 shows a section through the linear guide according to FIG. 9.
• a first printing unit 01 of a printing press in particular one Rotary printing machine, has a first cylinder 02, z. B. a forme cylinder 02, and an associated second cylinder 03, z. B. a transfer cylinder 03, (Fig. 1).
• the forme cylinder 02 and the transfer cylinder 03 have at least one malfunction, z. B. an interruption 04; 06 in the lateral surface effective when unrolling.
• This interruption 04; 06 can be a joint of a leading and a trailing end of one or more elevators, which are arranged on the circumference, for example by means of magnetic force or cohesively.
• channels 04; 06 or slots 04; 06 act which pick up the ends of elevators.
• the channels 04; Faults designated 06 are synonymous with other interruptions 04; 06 on the effective surface area, d. H. the outward-facing surface of the cylinder 02; 03.
• the forme cylinder 02 and transfer cylinder 03 each have at least two channels 04; 06 (or interruptions 03; 04 etc.). These two channels 04; 06 are each in the longitudinal direction of the cylinder 02; 03 one behind the other, and staggered in the circumferential direction.
• Channels 04; 06 are so on the two cylinders 02; 03 arranged that when the two cylinders 02; 03 each on one of the channels 06; 04 of the other cylinder 03; 04 unroll.
• the offset of the channels is preferably 04; 06 each cylinder 02; 03 approx. 180 ° in the circumferential direction.
• the transfer cylinder 01 of the first printing group 01 forms with a third cylinder 07; via a train 08; z. B. a printing material web 08, a printing point 09.
• This third cylinder 07 can be used as a second transfer cylinder 07 (FIG. 1) or as an impression cylinder 07 (FIG. 2), e.g. B. steel cylinders, or satellite cylinders 07.
• Axes of rotation R02; R03; R07 of the three interacting cylinders 02; 03; 07 lie essentially in a common plane E during a print-on position AN and run parallel to one another (see FIGS. 5 and 6). If the satellite cylinder 07 has two printing points on its circumference, then a second printing unit, not shown, is preferably also arranged in the common plane E.
• the third cylinder 07 designed as a second transfer cylinder 07 interacts with a fourth cylinder 11, in particular a second forme cylinder 11 with an axis of rotation R11, and forms a second printing unit 12.
• the two printing units 01; 12 form a printing unit 13 printing on both sides simultaneously on the web 08, a so-called double printing unit 13.
• the cylinders 07; 11 of the second printing unit 12 channels 04; 06 with the properties described above for the first printing group 01 with regard to the number and that of the offset to one another.
• Channels 04; 06 of the four cylinders 02; 03; 07; 11 are now preferably arranged so that two Channels 04; 06 two interacting cylinders 02; 03; 07; 11 roll on top of each other.
• the forme cylinder 02 and the transfer cylinder 03 each have a length L02; L03, which are four or more widths of a printed page, e.g. B. a newspaper page, e.g. B. 1,100 to 1,800 mm, in particular 1,500 to 1,700 mm and a diameter D02; D03, e.g. B. 130 to 170 mm, in particular. 145 to 185 mm, the circumference of which corresponds essentially to the length of a newspaper page (FIGS. 3 and 4).
• L02 which are four or more widths of a printed page, e.g. B. a newspaper page, e.g. B. 1,100 to 1,800 mm, in particular 1,500 to 1,700 mm and a diameter D02; D03, e.g. B. 130 to 170 mm, in particular. 145 to 185 mm, the circumference of which corresponds essentially to the length of a newspaper page (FIGS. 3 and 4).
• each of the two cylinders 02; 03 two channels 04; 06 which each extend continuously at least over a length which corresponds to two widths of a newspaper page (FIG. 3).
• Each cylinder 02; 03 but also more than two channels 04; 06 may be arranged.
• two channels 04; 06 in alignment, or alternately.
• four channels 04; 06 the two the end faces of the cylinders 02; 03 adjacent channels 04; 06 in a common alignment, and the two “inner” channels 04; 06 in a common alignment, but offset in the circumferential direction from the former (FIG. 4).
• the channels 04; 06 on the respective cylinder 02; 03; 07; 11 are offset from each other by 180 °. So they roll Channels 04; 06 between the forme cylinders 02; 11 and the transfer cylinders 03; 07 of the two printing units 01; 12 simultaneously and in the area of the same section in the longitudinal direction of the cylinders 02; 03; 07; 11 from; z. B. on the same page, e.g. B. a side I (Fig.
• each of the channels 06 of the transfer cylinder 03 there can be a single, continuous clamping and / or tensioning device or it can - in the case of more than several Newspaper page widths through channels - several clamping and / or tensioning devices can be arranged one behind the other in the longitudinal direction.
• the channels 04 of the forme cylinder 02 each also have, for example, one or more clamping devices.
• the forme cylinder 02; 11 and in the channels 06 of the transfer cylinder 03; 07 a "minigap technology" is used, in which a leading end is inserted into a narrow channel 04; 06 with an inclined leading hooking edge, the elevator is wound onto the cylinder 02; 03; 07; 11, the trailing end also in channel 04; 06 is inserted, and the ends are clamped against slipping out, for example by means of a rotating spindle or a pneumatic device.
• the transfer cylinder 03; 07 have z. B. in an advantageous embodiment (Fig. 3) only two, circumferentially offset by 180 ° to each other, each having at least one width which corresponds to two widths of a newspaper page.
• the elevators or channels 04 of the forme cylinders 02; 11 complementary to this and must either have, as shown, two continuous channels 04 each having a length of two newspaper page widths, or alternatively pairs of adjacent channels 04 arranged in alignment, each with a length of a newspaper page width.
• each interruption 04 of the forme cylinder 02; 11 in an advantageous embodiment, two clamping devices each of a length which essentially corresponds to a width of a newspaper page.
• the forme cylinder 02; 11 are in an advantageous embodiment with four in the longitudinal direction of the forme cylinder 02; 11 adjacent to each other bendable lifts occupies, which have a length in the circumferential direction of a little over the length of the printed image of a newspaper page, and in the longitudinal direction a width of about a newspaper page.
• an arrangement can also be advantageous, wherein the "outer" elevators adjacent to side I and the side II and II are aligned and the “inner” elevators are aligned and closed the former are arranged offset by 180 ° (Fig. 4).
• This highly symmetrical arrangement additionally reduces or prevents the risk of vibration excitation in plane E, which is caused by the non-simultaneous passage of channels 04; 06 on page I and page II.
• This also alternately tensioning and relaxing the web 08 alternately on side I and side II, and the resulting vibration of the web 08 can thereby be avoided.
• the linear arrangement of the cylinders 02; 03; 07; 11 and the arrangement of the interruptions 04; 06 on the respective cylinder 02; 03; 07; 11 and between the cylinders 02; 03; 07; 11 are in training also particularly on cylinder 02; 03; 07; 11 apply, which have a length L02; L03, which corresponds essentially to six times the width of a newspaper page.
• L02; L03 which corresponds essentially to six times the width of a newspaper page.
• the forme cylinders 02; 11 in an advantageous embodiment with respect to their axes of rotation R02; R11 fixed.
• the transfer cylinders 03; 07 with respect to their axes of rotation R03; R07 are designed to be movable and are at the same time from the associated forme cylinder 02; 11 and of the cooperating transfer cylinder 03; 07 can be switched off or adjusted to this.
• only the transfer cylinders 03; 07 moves while the forme cylinder 02; 11 remain in their fixed, possibly previously adjusted position.
• the forme cylinders 02; 11 however in appropriate devices, e.g. B. in eccentric or double eccentric bushings, in linear guides or in levers.
• the transfer cylinder 03; 07 can, as shown schematically in FIGS. 5 and 6, be movable along a linear actuation path 16 (FIG. 5) or along a curved actuation path 17 (FIG. 6). Travel 16 and 17 and the transfer cylinder 03; 07 in a print-down position AB are shown in dashed lines in FIGS. 3 and 4.
• the linear adjustment path 16 can take place by means of linear guides, not shown in FIG. 5, which are arranged in or on the side frame, also not shown in FIG. 5.
• the bearing in a linear guide is preferably on side I and on side II of the double printing unit 13.
• a lever 18 in which one of the transfer cylinders 03 is pivotally mounted about a pivot axis S.
• the pivot axis S is preferably in the plane E.
• the lever 18 has a length between the mounting of the axis of rotation R03; R07 of the transfer cylinder 03; 07 and the pivot axis S, which is larger than the distance of the axis of rotation R03; R07 of the transfer cylinder 03; 07 from the axis of rotation R02; R11 of the associated forme cylinder 02; 11 in print-on position ON. This means that those working together are switched off at the same time Transfer cylinder 03; 07 and the associated forme cylinder 02; 11, and vice versa for queuing.
• pivot axis S can also be eccentric to the axis of rotation R02; R11 of the associated forme cylinder 02; 11, e.g. B. be arranged at a distance from the plane E.
• the storage in a lever 18 is preferably carried out on side I and on side II of the double printing unit 13.
• the actuating path 16; 17 by the storage of the transfer cylinder 03; 07 generated in eccentric bushings, not shown, especially in double eccentric bushings.
• a largely linear adjustment path 16 can be generated in the area of the pressure-on position AN, but in the area further away from the pressure point 09, if necessary, a curve-shaped adjustment path 17 can be generated, which means that the transfer cylinder 03; 07 from the cooperating transfer cylinder 07; 03 as from the associated forme cylinder 02; 11 or vice versa allowed.
• the storage on side I and on side II of the double printing unit 13 is also advantageous for the use of eccentrics.
• the course of the web 08 is shown by the pressure point 09 located in the print-on position ON.
• the plane E of the double printing unit 13 and the plane of the web 08 intersect in an advantageous embodiment at an angle ⁇ of 70 ° to 85 °, in particular 75 ° to 80 °.
• Assign the transfer cylinder 03; 07 has a circumference which corresponds to the length of approximately one newspaper page, the angle ⁇ is preferably approximately 75 °, the transfer cylinders 03; 07, however, has a circumference which corresponds approximately to the length of two newspaper pages, the angle ⁇ should preferably be selected at approximately 83 °.
• This choice of the angle ⁇ contributes to the safe and quick release of the web 08 and / or the parking cylinders 03; 07 from each other with minimized travel 16; 17 calculation, and on the other hand minimizes negative influences on the printing result, which are caused by the extent of a partial wrapping of the transfer cylinder 03; 07 is significantly influenced (duplication, lubrication, etc.). With an optimized arrangement, the required linear travel 16 of each transfer cylinder 03; 07 less than or equal to 20 mm.
• At least one of the transfer cylinders 03; In one advantageous embodiment, 07 can be switched off to such an extent that the web 08 drawn in can be guided through the printing point 09 without contact during printing operation by means of other printing units.
• the double printing unit 13 is multiple, as shown in FIGS. 7 and 8, for example twice, in a printing unit 19, for. B. a so-called. H-printing unit 19, can be used in a common side frame 27.
• the separate designation of the parts which are the same as the upper double printing unit 13 for the double printing unit 13 located below is omitted.
• all cylinders 02; 03; 07; 11 with a circumference, which corresponds essentially to the length of a newspaper page can be used in terms of installation space, ie. H. save at a height H of the printing unit 19.
• this also applies to individual printing units 01; 12, for double printing units 13 and for printing units configured differently, which several printing units 01; 12 have.
• the priority can also be achieved if the cylinders 02; 03; 07; 11, e.g. B. for the purpose of changing lifts, cleaning and washing, maintenance, etc., lie.
• the pressure on or off position ON; AB is shown exaggerated in all figures for clarity.
• 7 indicates the transfer cylinders 03; 07 in a second possible position along the linear adjustment path 16, with here, for example, the upper double printing unit 13, e.g. B. for the purpose of printing form change, in the print-down position AB, and the lower double printing unit 13, z. B. is operated for the purpose of continued production, in the print-on position AN.
• FIG. 8 shows the relationships from FIG. 7 for the curved travel 17.
• each of the printing units 01; 12 at least one of its own drive motors 14, however only indicated by dashed lines in FIGS. 7 and 8, for the rotary drive of the cylinders 02; 03; 07; 11 on.
• this can be a single drive motor 14 for the respective printing group 01; 12, which in this case, in an advantageous embodiment, is initially placed on the forme cylinder 02; 11 drives, and from there via a mechanical drive connection, for. B. spur gears, timing belts, etc., on the transfer cylinder 03; 07 is driven.
• a high degree of flexibility in the various operating situations such as production printing, registration, elevator change, washing, web feed etc. has the design of the printing unit 01; 12 with its own drive motor 14, which is mechanically independent of the other drives, per cylinder 02; 03; 07; 11 (Fig. 8, dashed lines).
• one of the forme cylinders 02; 11 of a printing group 01; 12 its own drive motor M, and the remaining cylinders 02; 03; 07; 11 of the printing group 01; 12 have a common drive motor 14.
• the drive motor 14 drives coaxially between the axis of rotation R02; R03; R07; R11 and motor shaft, possibly with an angle and / or offset compensating coupling. If a "co-movement" of the drive motor 14 or a flexible coupling between the drive motor and the cylinder 02; 03; 07; 11 which may have to be moved is to be avoided, it can also take place via a pinion. Should the transfer cylinder 03; 07 driving drive motor 14 are carried during the actuating movement, this can also be in a further development on a corresponding guide, for. B. be carried on an outside of the side frame 27.
• the respective forme cylinder 02; 11 assigned inking unit 21 and, if present, the assigned dampening unit 22 is rotatably driven by a drive motor which is independent of the drive of the printing unit cylinders.
• the inking unit 21 and any dampening unit 22 which may be present can each have their own drive motor.
• the anilox roller can be, and in the case of a roller inking unit 21, the distribution cylinder or cylinders can be rotated individually or in groups.
• the one or more distribution cylinders of a dampening unit 22 can also be driven in rotation individually or in groups.
• 9 and 10 show an exemplary embodiment for realizing the linear adjustment path 16 by means of a linear guide.
• the pin 23 of at least one of the transfer cylinders 03; 07 are, for example, rotatably mounted in radial bearings in bearing housings 24 designed as slides 24 (in FIGS. 9 and 10 only the arrangement in the region of one end face of the cylinders 02; 03; 07; 11 is shown).
• the bearing housing 24 or slide 24 can be moved in linear guides 26 which are connected to a side frame 27.
• the linear guides 26 are oriented almost perpendicular to the plane E.
• two linear guides 26 are provided for guiding each bearing housing 24 or slide 24, which run parallel to one another.
• the linear guides 26 of two adjacent transfer cylinders 03; 07 preferably run parallel to one another.
• the linear guides 26 can be arranged directly on walls of the side frame 27, in particular on walls of openings in the side frame 27, which are almost perpendicular to the end face of the cylinders 02; 03; 07; 11 run.
• the side frame 27 has an insert 28, z. B. a so-called. Bell 28 on.
• the linear guides 26 are arranged on or in this bell 28.
• the bell 28 has an area which extends in the direction of the cylinder 02; 03; 07; 11 emerges from the alignment of the side frame 27.
• the linear guides 26 are arranged in or on this area of the bell 28.
• the distance between the two opposite side frames 27 is oriented i. d.
• the broadest aggregate e.g. B. on the wider inking unit 21, and usually causes a correspondingly longer pin on the cylinders 02; 03; 07; 11.
• the pins of the cylinders 02; 03; 07; 11 can be kept as short as possible.
• the bell 28 has a cavity 29, which is arranged at least partially at the level of the side frame 27.
• the cylinders 02; 03; 07; 11 can also drive connections such. B. each cooperating spur gears between the forme cylinder 02; 11 and the respectively assigned transfer cylinder 03; 07 be arranged.
• the paired drive can in this case preferably via the forme cylinder 02; 11 on the transfer cylinder 03; 07 done.
• the drive can also be operated via the two transfer cylinders 03; 07 on the forme cylinder 02; 11 done.
• the cavity 29 can be limited in a simple manner by means of a cover 31 (dashed lines) without this increasing the width of the machine or protruding from the side frame 27.
• the arrangement of the bell 28 thus shortens the length of the pins, which results in a reduction in the vibration, and enables a simple and variable construction, which is suitable for a wide variety of drive concepts and, with the same construction, allows the change between the concepts.
• the drive of the respective bearing housing 24 or slide 24 in the linear guides 26 is preferably carried out by means of a screw drive, for. B. a threaded spindle which is driven by an electric motor.
• the electric motor can be regulated with respect to a rotational position.
• a drive of the bearing housing 24 by means of a lever mechanism and an electric motor is also possible. If the lever mechanism is driven by means of one or more cylinders to which pressure medium can be applied, the arrangement of a synchronizing spindle which synchronizes the actuating movement on the two sides I and II is advantageous.
• a printing unit 01; 12 with long, slim cylinders 02; 03; 07; 11, which have a ratio of diameter to length of approx. 0.08 to 0.16 can be built and operated in a robust and low-vibration manner, while at the same time requiring little space, operation and frame construction.
• both transfer cylinders 03; 07 are placed either simultaneously or one after the other at the printing point 09.
• the parking is done in the opposite way to the illustration below.
• Moving the transfer cylinder 03; 07 takes place simultaneously and synchronously in the first embodiment of the z.
• the two transfer cylinders 03; 07 At least in the area close to the contact, at least two of the four cylinders 02; 03; 07; 11 rotated or subjected to a rotary movement.
• all four cylinders 02; 03; 07; 11 are rotated during the positioning.
• the latter has the advantage that the cylinders maintain their relative angular position with respect to one another and, if channels are present, the relative position of the same remains in the circumferential direction.
• the cylinders 02; 03; 07; 11 not by means of auxiliary drives, but by means of their angle-controlled drive motors 14, possibly in pairs via drive coupling.
• the cylinders 02; 03; 07; 11 in pairs on the forme cylinders 02; 11 driven, a mechanical drive connection, for. B. gear engagement between transmission cylinder 03; 07 and associated forme cylinder 02; 11 along the entire travel path 16; 17 remains.
• the paired drive can, however, also on the transfer cylinder 03; 07 and from there to the respective forme cylinder 02; 11 be driven.
• This rotary movement is preferably carried out in such a way that, for. B. a current setpoint for the angular position control of the drive motors an offset depending on the status or the speed of the actuating movement, z. B. is added as an angular velocity or as an angle setpoint.
• Rotates the printing unit 01; 13, for example at production speed, is used to turn off the double printing unit 13 depending on the transport direction of the web 08, and depending on whether the transfer cylinders 02; 11 to the same or in the opposite direction, which adds the value for the rotary movement corresponding to the turning movement, subtracts each, or adds on one side and subtracts on the other side.
• the amount of the relative speed (angular position or speed) resulting from the stopping in the case of the transfer cylinder 07, the movement of which during the stopping is a component in the transport direction of the web 08 has, subtracted, while it is added in the case of the transfer cylinder 03, the movement of which has a component antiparallel to the transport direction of the web 08 when it is parked.
• the two transfer cylinders 03; 07 one after the other, wherein when the first of the two transfer cylinders 03; 07 at least the associated forme cylinder 02; 11 or the transfer cylinder 03; 07 or the two assigned cylinders 02; 03 or 07; 11 experience a corresponding rotation.
• the second transfer cylinder 07; 03 either the transfer cylinder 07; 03 or the other three cylinders 02; 03; 07; 11 or all four cylinders 02; 03; 07; 11th
• cylinders 02; 03; 07; 1 1 or rolling can be realized by coupling the adjustment movement (s) and the rotary drives by using individual cylinders 02; 03; 07; 11 or rollers of a cylinder or roller arrangement, depending on the type of adjustment movement (s), are subjected to torque (s) or rotary movement (s) in such a way that the torque (s) resulting from this / these in the nip point (s) n) resulting frictional force (s) support the adjustment movement (s) or do not hinder it or at least reduce the opposing frictional forces.
• the torque (s) of the drive (s) are then selected as a function of the type of adjustment movement such that the adjustment movement does not result in a relative speed difference between the effective lateral surfaces in the nip point. Since friction forces the elevators on the cylinders 02; 03; 07; 11 or rollers, but also the web 08 passing the nip point, this design is particularly gentle on the material. Ideally, the cylinder (s) 02; 03; 07; 11 generally rotated in such a way that its surface speed is reduced to zero relative to the path 08. This embodiment variant enables a defined angular position of the cylinders 02; 03; 07; 11 or rollers to produce each other.
• the torques of the roller drives can also be selected such that the frictional forces that arise solely through the adjustment movement are overcompensated, so that the frictional force additionally supports the movement.
• an emergency stop e.g. B. caused by a broken web and possibly a winder
• the drives are switched torque-free at the start of the movement.
• the advantage of this solution lies in the simple feasibility and the avoidance of errors when turning the cylinder 02; 03; 07; 11.
• After the torque has been restored and, if necessary, the cylinders 02; 03; 07; 11 to one another there may be a deviation in the relative angular position to one another.
• this deviation is corrected in pairs or individually during the first revolutions by means of the angle-controlled drive motors 14, and the relative angular position is returned to the target values.
• a time ramp is specified for the relative angle of rotation position. That is, the cylinder 02; 03; 07; 11 or the pair undergoes a rotation according to a function as a function of time, and not as a direct function of a position or angle measurement of the actuating movement.
• the rotary movement or the addition / subtraction is triggered, for example, by the actuating command which causes the switching on and off.
• the transfer cylinder 03; 07 moves and is subjected to the described, the movement compensating rotary movement of a certain angular velocity or peripheral speed.
• a further development is advantageous, according to which the transfer cylinder 03; 07 with this angular velocity or peripheral velocity of the forme cylinder 02; 11 is subjected to an essentially double circumferential speed (ie double angular speed for the same extent).
• the drive motors 14 are then controlled or regulated accordingly.
• the drive connection between the transfer cylinders 03; 07 always remains engaged when switching on and off.
• the transfer cylinder 03; 07 are then subjected, for example, to an angular speed which compensates for the relative speed during the setting-off or setting-in process to the web 08, while the forme cylinders 02; 11 with the substantially double amount of the resulting peripheral speed (i.e. double angular speed with the same circumference).
• the drive can be driven by a drive motor 14 on one of the cylinders 02; 03; 07; 11 directly or via a gear. In the control of the speed and / or angle of rotation position, however, as above, it must be taken into account whether the drive motor is initially on a form cylinder or a transfer cylinder 02; 03; 07; 11 drives.
• non-linear bridge printing units e.g. u- or n-printing units, satellite printing units, printing units for direct printing and all other printing units or units can be used in an advantageous manner, in which one or more cylinders are to be adjusted.

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• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Rotary Presses (AREA)
• Handling Of Sheets (AREA)

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• 2002
  • 2002-07-03 CN CN200510127214.6A patent/CN1781703A/zh active Pending
  • 2002-07-31 AT AT02762234T patent/ATE460279T1/de not_active IP Right Cessation
  • 2002-07-31 WO PCT/DE2002/002799 patent/WO2003013857A2/fr active Application Filing
  • 2002-07-31 CN CNB028137159A patent/CN1302922C/zh not_active Expired - Fee Related
  • 2002-07-31 US US10/483,267 patent/US7032510B2/en not_active Expired - Fee Related
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