EP1621499B1 - Eléments de guide dans un dispositif à sécher d'une machine de production ou de traitement de bandes de matière - Google Patents

Eléments de guide dans un dispositif à sécher d'une machine de production ou de traitement de bandes de matière Download PDF

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Publication number
EP1621499B1
EP1621499B1 EP05106744A EP05106744A EP1621499B1 EP 1621499 B1 EP1621499 B1 EP 1621499B1 EP 05106744 A EP05106744 A EP 05106744A EP 05106744 A EP05106744 A EP 05106744A EP 1621499 B1 EP1621499 B1 EP 1621499B1
Authority
EP
European Patent Office
Prior art keywords
openings
guiding element
web
micro
element according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP05106744A
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German (de)
English (en)
Other versions
EP1621499A1 (fr
Inventor
Johannes Boppel
Peter Leidig
Ernst Lohmüller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE10307089A external-priority patent/DE10307089B4/de
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP1621499A1 publication Critical patent/EP1621499A1/fr
Application granted granted Critical
Publication of EP1621499B1 publication Critical patent/EP1621499B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/22—Longitudinal folders, i.e. for folding moving sheet material parallel to the direction of movement
    • B65H45/221—Longitudinal folders, i.e. for folding moving sheet material parallel to the direction of movement incorporating folding triangles
    • B65H45/223—Details of folding triangles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/02—Conveying or guiding webs through presses or machines
    • B41F13/06—Turning-bar arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/032—Controlling transverse register of web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/24—Registering, tensioning, smoothing or guiding webs longitudinally by fluid action, e.g. to retard the running web
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/26—Registering, tensioning, smoothing or guiding webs longitudinally by transverse stationary or adjustable bars or rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
    • B65H23/32—Arrangements for turning or reversing webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/41—Winding, unwinding
    • B65H2301/414—Winding
    • B65H2301/4148—Winding slitting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/10—Means using fluid made only for exhausting gaseous medium
    • B65H2406/11—Means using fluid made only for exhausting gaseous medium producing fluidised bed
    • B65H2406/111—Means using fluid made only for exhausting gaseous medium producing fluidised bed for handling material along a curved path, e.g. fluidised turning bar
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2406/00—Means using fluid
    • B65H2406/40—Fluid power drive; Fluid supply elements
    • B65H2406/42—Distribution circuits
    • B65H2406/423—Distribution circuits distributing fluid from stationary elements to movable element

Definitions

  • the invention relates to guide elements in the dryer of a web-forming or -processing machine according to claim 1 or 2.
  • a printing unit with two web guiding elements is known, which are arranged in an inlet and an outlet region of a printing unit such that a web can be guided without contact by the pressure point when the printing position is stopped.
  • the web guide elements are designed as rotatably mounted in side walls rollers.
  • a turning bar is disclosed in one embodiment, wherein a tube wall segment of porous, air-permeable material with a base body together forms a closed pressure chamber.
  • the porous segment forms a wall of the chamber and load carrying over its width - without load-bearing pad - executed.
  • a segment having through holes is arranged instead of the porous segment.
  • the US 54 23 468 A shows a guide element, which has a bore having inner body and an outer body made of porous, air-permeable material.
  • the holes in the inner body are provided only in the expected wrap.
  • a guide element with a microporous, air-flow material is known, which is designed, for example, as a guide in a coating device, in a remoistening system, in a dryer, in a web store or in a spreading device.
  • a turning bar arrangement which comprises four turning bars pivotable about an axis perpendicular to the plane of the incoming web.
  • the turning bar On a half-shell-like area of its lateral surface, the turning bar has openings for Naturalstriff of compressed air.
  • porous material with a mean diameter smaller than 500 microns i.a. for a coating device, web guiding elements such. B. in a dryer or a rewet, a web storage or a spreading device each in the wrap.
  • the porous material forms a wall between the pressure medium space and the outlet area.
  • the invention has for its object to provide vanes in the dryer of a web-forming or -processing machine.
  • the achievable with the present invention consist in particular to avoid damaging a printed and / or still wet web, especially paper web and at the same time to ensure the high demands on an accurate and flutter-free guiding.
  • rotating guide and / or support elements which come into physical contact, guarantee a precise result, they may damage the printed image.
  • air outlet openings with diameters in the millimeter range can be selectively applied to the material forces (momentum of the beam), by means of which it is employed by the component in question, or to another component, while by a distribution of micro holes with high hole density, a broad support and priority the effect of a trained air cushion comes into play.
  • Previously used holes were in cross section, for example, 1 to 3 mm, whereas for the micro-openings, the cross-section is smaller by at least one order of magnitude. This results in significantly different effects. For example, the distance between the surface carrying the openings and the web can be reduced, the volume flow of fluid can be lowered considerably and, as a result, leakage losses that occur outside the effective range with the web can be significantly reduced.
  • micro-openings In contrast to components with openings or holes of opening cross sections in the range of millimeters and a hole spacing of several millimeters, a much more homogeneous surface structure is advantageously created in the formation of micro-openings on the surface.
  • openings on the surface of the component which have a diameter less than or equal to 500 microns, advantageously less than or equal to 300 microns, in particular less than or equal to 150 microns.
  • an overpressure in the chamber of 0.5 to 2 bar, in particular from 0.5 to 1.0 bar of advantage.
  • the air cushion is made uniform and the volume flow emerging per unit area in this way reduced, that even in not wrapped by the web areas leakage current can be reasonably small.
  • microapertures are advantageously designed as open pores on the surface of a microporous, air-permeable material or else as openings of through holes of small cross-section which extend through the wall of a supply chamber to the outside.
  • the micro-openings are designed as openings through continuous microbores.
  • the guiding and / or supporting element has a solid, air-permeable Carrier has, on which the microporous material is applied as a layer.
  • a carrier can be acted upon with compressed air, which flows out of the carrier through the microporous layer and thus forms an air cushion on the surface of the component.
  • This support in turn, may be porous with better air permeability than that of the microporous material; but it can also be formed from a cavity enclosing, provided with air passage openings flat material or molded material. Combinations of these alternatives are also possible.
  • the thickness of the layer at least equal to the distance of adjacent openings of the carrier.
  • an embodiment is advantageous, wherein the web-facing and the micro-openings having side of the guide and / or support member is formed as one or more inserts in a carrier.
  • the web-facing and the micro-openings having side of the guide and / or support member is formed as one or more inserts in a carrier.
  • a printing machine, z. B. a printing machine for printing sheet material, in particular a web-fed rotary printing press for printing one or more Webs B, has several aggregates 100; 200; 300; 450; 500; 600; 700; 800; 900 for supply, for printing and for further processing.
  • Additional printing units 300 can be provided for the printing units 300 (eg four pieces for four-color printing) provided by default for multi-color printing, which can then also be used, for example, alternately with one or more of the remaining printing units 300 for the flying printing form change.
  • a coating unit 450 may be provided in the web path.
  • the web B passes through a dryer 500 and is optionally cooled again in a cooling unit 600, if the drying takes place in a thermal manner.
  • a drying unit 600 After the dryer 500, in or after the cooling unit 600, at least one further, not shown in FIG. 1 conditioning, such. B. a coating device and / or a Wiederbefeuchtung be provided.
  • the web B can be fed via a superstructure 700 to a folding apparatus 800.
  • the superstructure 700 has at least one not shown in Fig. 1 silicone work, a slitting and a turning device and a funnel unit. The said silicone work can also be before the superstructure 700, z. B. be arranged in the region of the cooling unit 600.
  • the superstructure 700 may further comprise a perforator, not shown in FIG. 1, a gluing unit, a numbering unit and / or a plow folder. After passing through the superstructure 700, the web B or sub-webs B1; B2 led into a folder 800.
  • a perforator not shown in FIG. 1, a gluing unit, a numbering unit and / or a plow folder.
  • the printing machine additionally has a separate cross cutter 900, z. B. a so-called. Plano boom 900, on, in which a For example, not guided by the folding apparatus 800 web B cut in size sheet and possibly stacked or laid out.
  • the aggregates 100; 200; 300; 450; 500; 600; 700; 800; 900 of the printing press have an effective width transverse to the transport direction T of the web B, which is the processing of webs B of a maximum width b (FIG. 2) of z. B. up to 1,000 mm allowed.
  • effective width is the respective width or clear width of the directly or indirectly cooperating with the web B components (eg, roller, cylinder, implementation, sensors, travel paths, etc.) of the units 100; 200; 300; 450; 500; 600; 700; 800; 900 so that the web B can be processed, conditioned and conveyed in its full width b.
  • the aggregates 100; 200; 300; 450; 500; 600; 700; 800; 900 in their functionality (material supply, rail transport, sensors, further processing) designed such that even partial width webs B 'in the printing press down to a width b' of only 400 mm are processed.
  • the aggregates 100 defining or processing a section length a; 200; 300; 450; 500; 600; 700; 800; 900 are configured to define, for example, a section length a lying between 540 and 700 mm on the path B.
  • the section length a is 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 so that with a few changes, the printing machine with optional section length 546 mm, 578 mm, 590 mm or 620 mm is executable.
  • the section length a is, for example, standard with four stationary printed pages, z. B. DIN A4, in the transverse direction of the web B side by side and two printed pages (for example a length s) in the longitudinal direction one behind the other.
  • z. B. DIN A4 in the transverse direction of the web B side by side
  • two printed pages for example a length s
  • other page numbers per section length a are possible.
  • the web tension already pre-setting for the trouble-free unwinding (bag formation and too high tension is avoided), which ultimately takes place for the course of the web B; B 'through the following printing units 300 and subsequent units 450; 500; 600; 700; 800; 900 substantial adjustment of the web tension and / or the lateral orientation of the web B; B 'in the infeed 200.
  • the feeder unit 200 has at least one device for adjusting the web tension and a device for lateral alignment (FIG. 3).
  • the infeed 200 has a traction roller 202 driven by a drive motor 201. Slippage is on the one hand by large wrap the draw roller 201 from 90 to 180 ° (by S-shaped course of the web B) and the second through to the draw roller 202 z. B. pneumatically engageable rollers 203 avoided / reduced. Instead of the rollers 203 may also be arranged a micro-openings having Andschreibelement 203, which flows through compressed air, an air cushion between the web B; B 'and its surface forms. In this case, this is true for the basic structure and for the formation of the micro-openings in connection with the guide element 433 and / or 712 and / or former 732. The microapertures may then be formed here as open pores of porous material or as openings of microbores.
  • the drive motor 201 can be regulated in terms of its torque, in which case the web tension can be set via the torque predetermined by a voltage control.
  • the driven tension roller 202 can in this case at the same time be effective as a device for adjusting the web tension on the applied torque.
  • the drive motor 201 is regulated with respect to its speed.
  • the set speed is z. B. predetermined by the machine control and / or by a web tension control, which specifies the desired speed against the background of the web tension to be achieved with respect to a subsequent, not shown draw roller. As a rule, there is a lagging of the draw roller 202 and thus braking with the drive motor 201.
  • the web tension is determined and set in the illustrated embodiment with a train roller 202 downstream device.
  • the web B circulates; B 'a positionally movable roller 204, in particular a dancer roller 204, and a measuring roller 206.
  • the dancer roller 204 is by means of a drive 207, for example, a pressurizable cylinder 207, changeable in position and with a force against one by the Roller 204 wrapping web B; B 'generated tensile force acted upon.
  • the infeed 200 further has a web guide for lateral alignment of the web B; B 'by means of a corresponding device, which means for lateral displacement 208, z. B. a rotating frame 208, and a measuring device for detecting the position of the web edge 209 has.
  • the measurement takes place, for example, via a transmitter, a mirror and a receiver for the reflected beam.
  • a in Fig. 3 only schematically indicated control and / or regulating device 211, a comparison of the actual value x-is done with a predetermined example of the machine control setpoint x-soll for the position of the web edge.
  • the control and / or regulating unit 211 applies a positioning command ⁇ which compensates for the deviation to a drive 212 which is indicated only schematically.
  • the measuring device 209 is spatially variable in its axial position, z. B. remotely operated via a drive means executed. This can be based on control command from a control panel or automatically by the Machine control positioning on the basis of information regarding a web width used for the planned production.
  • the press has several, z. B. at least four, in particular five substantially equally equipped printing units 300.
  • the printing units 300 are preferably arranged side by side and are of the web B; Go through B '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 with two printing units 301, z. B. two offset printing units 301 executed for the two-sided printing in the so-called. Rubber-against-rubber operation.
  • At least one of the printing units 300 are at least in the lower region, and optionally in the upper region guide elements 302, z. B.
  • Fig. 4 shows schematically the arrangement of two over the web B; B 'co-operating printing units 301, each with a cylinder 303 designed as a transfer cylinder 303 and as a forme cylinder 304; 304, also as printing cylinder 303; 304, an inking unit 305 and a dampening unit 306.
  • the printing unit 300 has per form cylinder 304 devices for semi or fully automatic plate feeder 307 or change a printing plate 310th
  • At least one or more printing units 300 has additional guide elements 308 close to and after the nip point of the printing unit 300. If a printing unit 300 without printing and without contact between web B; B 'and transfer cylinders 303 are traversed, the dashed line shown in Fig. 4 is under Use of the guide elements 308 advantageous.
  • the guide elements 308 are preferably designed as luftum Whyte rods or rollers, as explained in more detail below. This reduces the risk of abrasion of previously freshly printed paint.
  • each transfer cylinder 303 is assigned a washing device 309.
  • the washing device 309 By means of the washing device 309, the elastic surface of the transfer cylinder 303 can be cleaned.
  • the cylinders 303; 304 each have a circumference between 540 and 700 mm, wherein preferably form and transfer cylinder 303; 304 have the same extent.
  • the circumferences are between 540 and 630 mm.
  • the section length a is 620 ⁇ 10 mm.
  • the printing unit 300 is designed in such a way that, with a few changes, cylinders 303; 304 with a circumference of 546 mm, 578 mm, 590 mm or 620 mm is executable.
  • the cylinder 303; 304 and an adjustment of the drive (lever, s.u).
  • the transfer cylinder 303 has on its circumference at least one elevator, not shown, which is held in at least one axially extending on the lateral surface channel.
  • the transfer cylinder 303 has only one over the effective length or substantially over the entire width of the web B to be printed; B 'reaching and substantially (except for a shock or a channel opening) to the entire circumference of the transfer cylinder 303 reaching elevator.
  • the elevator is preferably designed as a so-called metal blanket, which has an elastic layer (eg rubber) on a substantially dimensionally stable carrier layer, z. B. a thin metal plate having. The ends of this elevator are now introduced through an opening on the lateral surface in the channel and friction or held there form-fitting.
  • the ends are bent / folded (eg in the region of its leading end by approximately 45 ° and in the region of its trailing end by approximately 135 °). These ends extend through an opening of a channel extending axially over the entire width of the transfer cylinder 303, which, for example, likewise has a locking, clamping or tensioning device.
  • the opening to the channel, in the region of the lateral surface in the circumferential direction of the cylinder 303, preferably has a width of 1 to 5 mm, in particular less than or equal to 3 mm.
  • the clamping is advantageously pneumatically actuated, z. B. as one or more pneumatically actuated lever, which are biased in the closed state by spring force against the reaching into the channel trailing end executed.
  • a pressurizable medium is preferably used hose.
  • the inking unit 305 has, in addition to a color feeder 311, z. B. a color box 311 with a regulator 312 for regulating the flow of color, a plurality of rollers 313 to 325 on.
  • the ink feed 311 can also be designed as a doctor bar. The ink passes in juxtaposed rollers 313 to 325 from the ink fountain 311 on the ductor roller 313, the film roller 314 and a first ink roller 315 on a first distribution cylinder 316.
  • the color passes depending on the operation of the inking unit 305 (see below), at least an ink 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 color passes from the first distribution cylinder 316 via different possible ways either selectively or simultaneously (in series or in parallel) via two further distribution cylinder 321; 324 to the applicator rollers 322; 323; 325.
  • the second distribution cylinder 324 may simultaneously with a roller 328, z. B. applicator roller 328, the dampening unit 306 act together.
  • the roller 328 acts with another roller 329 of the dampening unit 306, z. B. a friction roller 329, in particular a iridescent chrome roller 329 together.
  • the chrome roller 329 receives the dampening solution from a moistening device, for. B. a roller 330, in particular a fountain roller 330, which in a dampening solution supply 332, z. B. a water tank, diving. Under the water tank a drip tray 335 is preferably arranged for collecting condensation forming on the water box, which can be heated in an advantageous embodiment, for. B. by means of heating coil is executed.
  • a rotary single drive not visible in Fig.
  • the drive motor in particular a drive motor, provided which z. B. via a corner or bevel gear, the respective roller 329; 330 mechanically independently rotatably drives individually.
  • the drive motor is preferably designed as a. Adjustable speed (in particular continuously) electric motor, in particular three-phase motor.
  • the setting of the speeds or the humidification can advantageously from the control center, z. B. from the color control desk, where it is displayed.
  • the machine control is a correlation between machine speed and dampening or speed deposited by which the speed of the two rollers 329; 330, in particular the roller 330, can be predetermined.
  • rollers 317; 318; 328 are arranged in an advantageous embodiment in the manner indicated by solid and dashed lines movable manner. Under the mobility of the rollers 317; 318; 328 is not to be understood here as the usual adjustability given for adjustment purposes, but rather the operational mobility for conversion from one operating position to another. Ie. Manual or actuatable actuating means and / or stops (eg adjustable) are provided for both the one and the other operating positions. Furthermore, there is a larger allowable travel or before the roller assembly is chosen so that the two layers can be reached by the usual travel.
  • the chrome roller 329 and the roller 330 are each movable in a direction perpendicular to its axis, z. B. in levers, stored so that the position of the applicator roll 328 in o. G. Way is changeable.
  • the inking unit 305 advantageously has, in addition to the mentioned rollers 313 to 325, 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 is done by a corresponding removal device 333 can be adjusted to this roller 326 itself, or, as shown on a cooperating with this roller 327 (FIG. 4).
  • the above-mentioned guide element 308 is preferably designed such that, at least on its path B; B 'facing side of its surface has air-permeable micro-openings.
  • micro-openings here are understood openings on the surface of the component, which have a diameter less than or equal to 500 microns, advantageously less than or equal to 300 microns, in particular less than or equal to 150 microns.
  • microapertures can advantageously be designed as open pores on the surface of a porous, in particular microporous, air-permeable material or else as openings of through holes of small cross-section which extend outwardly through the wall of a supply chamber.
  • the guide element 308, as shown in Fig. 5 a) to c) shown schematically, has a base body 441 with an interior 442, z.
  • a tubular body 441 (Fig. 5 a)), which in its wall 443 radially to the lateral surface through openings 444 has.
  • Through the interior 442 and the openings 444 is blown during operation gas, which z. B. by a compressor, not shown, under a pressure P is greater than the ambient pressure.
  • the lateral surface of the main body 441 has, at least in the section provided with openings 444 porous material 446, a layer 446 of a sintered material, in particular a sintered metal, which also covers the openings 444 and continuously through the with the web B; B 'cooperating area extends, so a continuous surface at least in the of the web B; B 'is provided for wrapping area provided.
  • the inner space 442 is not formed by a base body 441 formed as a tube, but in a different geometry.
  • the base body 441 is formed from a part-circular wall 443 (in particular with a fixed radius or radius of curvature R443 with respect to a fixed center M443), which is closed on its open side by a cover 445.
  • the pitch circle angle ⁇ of the openings having wall 443 is selected to about 180 °. With this measure, for example, a certain width b433 of the guide element 308 - for example, a space reasons predetermined maximum width - the largest possible effective area achievable.
  • the radius R433 for the pitch circle is selected on the basis of the required deflection (angle of change of direction of the web B; B ') and a corresponding pitch circle is taken.
  • a deflection is thus as "soft” and is supported on the available space in the widest possible range by the air cushion.
  • a pitch angle ⁇ is a pitch angle ⁇ of less than 180 °, z. B. between 10 ° and 150 °, in particular between, here about 90 °.
  • the pitch circle angle ⁇ is selected to be 10 ° to 45 °, in particular between 15 ° to 35 °.
  • the width b433 is selected, for example, to be 30 to 150 mm, in particular 50 to 110 mm.
  • the radius of curvature R 433 for the wall 443 is, for example, between 120 and 150 mm, in particular between 140 and 200 mm.
  • the layer may, as in FIG. 5 b), be extended as far as the cover 445 or else only the wall 443.
  • microporous material 446 is not applied as a layer on a wall 443, but is designed as a substantially self-supporting wall 443, this forms by its inner boundary surface together with a designed as a support body 445 cover 445 effective as a pressure chamber interior 442 off.
  • Fig. 5 b) and / or c) then eliminates the wall 443, wherein the porous material with a corresponding wall thickness, for. B. at least 2 mm, is executed.
  • This principle is also applicable to the guide and / or support elements mentioned in the description in connection with porous material, in particular to the guide element 308.
  • the measure With respect to the pitch circle angle ⁇ measure at a width b433 of the guide element 433 - for example, a space reasons predetermined maximum width - the largest possible effective as a support surface of the air cushion accessible.
  • the radius R433 for the pitch circle (or the pipe as raw material) is selected on the basis of the required deflection (angle of change of direction of the web B; B ') and a corresponding pitch circle is taken. A deflection is thus as "soft" and is supported on the available space in the widest possible range by the air cushion.
  • openings and / or layer 446 may include the full 360 ° angle, or only a partial circle.
  • pitch circles profiles for the train B B 'interacting area of the wall 443 conceivable, for example as a section of an ellipse, parabola or hyperbola.
  • the curve shape of the deflection with respect to a "soft" deflection can be optimized.
  • the pitch circle shape has advantages in terms of standardization, material consumption and simplified manufacturing.
  • a guide element 308 wherein the porous layer is not largely supported by a base body having openings, but for example, only bridge-like supported on a support in edge regions, has the formation of a circular, semi-circular, elliptical, parabolic or hyperbolic Body directly under the layer in terms of manufacturing, dimensional stability, cost and handling great advantages.
  • at least half of the web B; B 'cooperating surface of the layer 446 lined by the wall 443 and / or openings or free cross-sections have a maximum clear width of 10 mm, in particular of less than or equal to 5 mm.
  • the layer 446 is formed of a microporous material and is gas-permeable.
  • the gas permeability may in the production by the middle Pore size, the ratio of open to closed pores, etc. are influenced.
  • the micro-openings provide, in contrast to spaced holes of larger diameter for a very uniform over the surface radial flow.
  • the wall 443 can only on the of the web B; B 'to the wrap provided angle range (viewed in cross section) have openings 444, wherein the layer 446 then extends substantially over the same area, or it may be provided due to simpler manufacture in the entire 360 ° range, the layer (Fig a) shown in dashed lines).
  • both openings 444 and layer 446 in the entire 360 ° region of the guide element 433 are provided.
  • the guide element 433 can then be used for any wraps and web guides at various points of the printing machine, without a custom-made and an alignment would be required.
  • micro-openings are designed as openings through holes, in particular microbores, which are characterized by a z. B. designed as a pressure chamber interior 442 bounding wall 441 extend outward.
  • the wall 441 does not have a microporous layer.
  • the holes have z. B. a diameter (at least in the region of the openings) of less than or equal to 500 .mu.m, advantageously less than or equal to 300 .mu.m, in particular between 60 and 150 .mu.m.
  • the opening degree is z. From 3% to 25%, especially from 5% to 15%.
  • a hole density is at least 1 / (5 mm 2 ), in particular at least 1 / mm 2 up to 4 / mm 2 .
  • the wall 441 thus has, at least in one of the web B; B 'opposite area, a microperforation on.
  • the microperforation extends over the area which with the railway B; B 'works together; however, as in the porous layer embodiment 446, it may extend 360 ° over the full circumference since the losses are limited as noted.
  • guide element 308 full circle, partial circle, full or partial coating, microporous layer 446 or microbores and / or full or partial coverage with openings in the circumference
  • guide or support elements such.
  • Example above mentioned guide elements 308 of the printing unit 300, described below turning bars 712, vanes 501 of the dryer 500 and / or otherwise mentioned in the description with respect to the micro-openings elements in the infeed 200 of the web guide to the silicone unit 716 and 700 in the superstructure for guidance or support of the web B; B 'and the former 732 apply.
  • the corresponding reference numerals in the figures are to be replaced for the radius, the width and the components.
  • the printing unit 300 has a device for influencing the fan-out effect 336, ie for influencing a change in the transverse extent / width of the web B caused, for example, by the printing process (in particular the moisture).
  • B from point of pressure to point of pressure.
  • at least one nozzle 338 is arranged on a traverse 337 such that gas flowing out of it, in particular air, onto the web B; B 'is directed.
  • the web B; B ' is more or less wavy when passing through this area, depending on the magnitude of the current, resulting in a correction of the width b; b 'and the lateral alignment of each sub-area of the printed image result.
  • the strength of the air flow, z. B. per nozzle 338, is preferably adjusted by means not shown servo valves. In this case, for example, manually, via a control or regulation of each nozzle 338, a pressure from 0 to maximum value can be assigned. It is also possible to assign all nozzles 338 basically the same value, by the targeted selection of a subset (less than or equal to the total number of nozzles) on opened nozzles 338, however, to adjust the type and amount of correction, ie, the ripple.
  • the nozzles 338, at least the respectively outermost nozzles 338, or all the nozzles 338 are arranged on the traverse 337 except for those in the middle in the axial direction.
  • the adjustability can be done on manually adjusted techniques (loosening and moving, manually driven spindle (s) etc.) or by drives (eg motorized). The latter is particularly advantageous if the axial positioning or at least presetting of the machine control automatically based on the width intended for printing b; b 'of the web B; B 'is made.
  • the device for influencing the fan-out effect 336 receives its setting commands from a controller, not shown, which in turn receives the measured values for the lateral position of the printed image (s) of downstream sensors.
  • support elements 338 are arranged, which in each case rest on their tracks B; B 'side facing a plurality of micro-openings to form an air cushion have (see this embodiment corresponding surface of the guide member 308).
  • placement is not effected, for example, by the strength of an air jet, but with constant passage of air via a movement perpendicular to the plane of the web B; B '.
  • the web B; B ' for example, subjected to a drying process.
  • This can in principle in different ways, for. B. purely convective, by infrared radiation, by hot air or by mixing the mentioned methods.
  • the dryer 500 is designed as a thermally active dryer 500.
  • the dryer 500 To guide the printed web B; B ', the dryer 500 at least one guide element 501 (in Fig. 1 indicated), which in one embodiment z. B. as rollers, in particular as so-called. "Hedgehog rollers" are executed.
  • the guide elements at least one first or a plurality of guide elements 501, are formed in the front region of the dryer 500, as micro-openings - microporous layer or micro-bores acted upon with compressed air - according to the explanations on the guide elements 308. Damage to the fresh print image is thus avoided.
  • the superstructure 700 comprises as essential modules at least one longitudinal cutting device 701, a turning device 702 and a funnel unit 703 (FIG. 6).
  • Fig. 6 vertical supports between different levels and stairs and other structural measures for clarity are largely not shown.
  • a simplest standard version of the superstructure 700 is performed without longitudinal cutting device 701 and turning 702 and only for a single-lane straight run of the web B; B 'provided.
  • the superstructure 700 can functionally and / or structurally still a Brukanten- or Brumittenregel observed with z.
  • rotary frame 713 and sensor 714 a silicone work 716 with two consecutively in contact with the web B; B 'bring, each individually motor-driven applicator rollers, possibly a scanning device 717 for measuring the color density and possibly a perforator 718 (only indicated by dashed lines) assigned and in particular the longitudinal cutting device 701 upstream.
  • scanning heads 715 for the color register control on both sides of the web B; B '.
  • subsequent guide elements 720; 720 '(and possibly 710) or guide rollers 720; 720 '(and possibly 710) e.g.
  • the scanning heads 715 associated guide roller 720 may advantageously be designed as luftum réellete rod in one of the embodiments with micro-openings (see to guide element 308 and / or 712).
  • the microapertures may then be formed here as open pores of porous material or as openings of microbores.
  • the slitter 701 is adapted to receive the incoming web B; B 'in several partial webs, z. B. two partial webs B1; B2 cut lengthwise.
  • it has at least one blade unit 705, which includes, for example, a blade 706, referred to as lower blade 706, which is provided, for example, by the web B; B 'into a groove of a counter knife 707, z. B. as upper blade 707 designated knife 707 dips.
  • the blade unit 705 is formed as a shear cutter.
  • the counter-knife 707 may also be designed as a roller 707.
  • the counter-knife 707 as a single blade or as a roller, can advantageously be embodied as air-encased support elements or rod in one of the embodiments with micro-openings (see for guide element 308 and / or 712).
  • the microapertures may then be formed here as open pores of porous material or as openings of microbores.
  • the lower blade 706 is preferably driven separately by a motor, independently of other units or blade units 705, and preferably has a lead over the track B; B 'of 2 - 5%.
  • the upper knife 707 is driven by friction with the lower knife 706. Possibly. can also be a positive drive connection between the lower and upper blade 706; 707 be provided. In the case of several blade units 705 are z. B.
  • the blade unit 705 is designed to be axially movable on a frame-fixed traverse.
  • the axial alignment can be done on manually adjusted techniques (release and displacement, manually driven spindle (s), etc.) or in an advantageous embodiment by drives (eg motorized by spindles).
  • the latter is particularly advantageous when the axial positioning or at least presetting automatically by the machine control based on the width b intended for printing; b 'of the web B; B 'and the product-specific cut lines to be made or from a control panel.
  • the longitudinal cutting device 701 includes each entire web B to be printed in the printing machine; B 'only one, z. B. pneumatically on / off adjustable blade unit 705.
  • a version with four juxtaposed, axially individually adjustable motor blade units 705 advantage is a version with four juxtaposed, axially individually adjustable motor blade units 705 advantage.
  • the superstructure 700 has in a possibly existing dryer 500 downstream area, z. B. at least before the possibly existing turning 702, a towing device, for. B. a train group, which includes at least one tension roller 708.
  • the tension roller 708 is preferably mechanically independent of other units by its own drive motor, for. As a servomotor, driven. It is preferably regulated with respect to its speed and receives a target value based on a measured value (see below) and a z. B. specified by the machine control setpoint (or setpoint range) for the voltage.
  • the pulling group has a plurality of rollers 709 or a roller 709 arranged axially next to one another, which can be switched on or off pneumatically to or from the draw roller 708, for example, in groups or preferably individually. With the individual On / Ab auskeit a varying web width can be considered.
  • the rollers 709 as a plurality of pressing elements or continuous pressing element (rotatable or fixed) in one of the embodiments with micro-openings (see to guide element 308 and / or 712).
  • the microapertures may then be formed here as open pores of porous material or as openings of microbores.
  • the superstructure 700 has a measuring device 710 for determining the web tension, in this case a last guide roller 710 designed as a measuring roller 710 in front of the train group.
  • the measuring device 710 is z. B. formed as a measuring roller or otherwise.
  • the web tension is determined by means of the measuring device 710 and used for voltage regulation.
  • the turning tool 702 has at least one turning tail 711, by means of which a partial web B1; B2 can be brought to another flight and / or can be overthrown. It includes a pair of guide element 712 inclined to the transport direction T, z. B. of turning bars 712.
  • two turning tables 711, d. H. two pairs of turning bars 712 for offset or to fall two partial webs B1; B2 provided.
  • the turning bars 712 of a pair may be either parallel to each other and 45 ° to the incoming web B; B 'be inclined (offset), or they are perpendicular to each other and at 45 ° and 135 ° against the incoming web B; B 'inclined (falls and possibly offset). As shown in FIG.
  • each reversing corner 711 is preceded by at least one guide element 710, by means of which the relevant part track B1; B2 is supplied to the turning deck 711.
  • a further guide element 710 may be provided, by means of which a web path of an example uncut B; B 'or a partial web B1, B2 without turning - d. H. in "straight ahead" - to the funnel unit 703 is made possible.
  • the guide element 710 is designed in one embodiment as a guide roller 710. It is either fixed but rotatable with the frame not shown explicitly or structurally fixed but rotatable connected to the associated turning table 711.
  • the two turning tables 711 can be designed with the same width. It is advantageous if the length of the turning bars 712 in Projection to incoming web B; B 'or partial web B1; B2 are dimensioned such that they at least a three-quarter wide web B of the maximum width b of a full web B, z. B. at least 750 mm. This is also advantageous if only one reversing corner 711 is provided. In an advantageous variant of the embodiment with two turning corners 711, however, one of the turning corners 711 with said width b, z. B. the three-quarter web B accordingly, and the other turning tail 711 smaller, z. B.
  • the length or width of the reversing corner 711 is understood to be the length of the lateral surface which is effective for the web guide, to which, if necessary, pins, bearings, untreated jacket surfaces, etc. may be added.
  • all turner bars 712 are in the plane of the incoming web B; B 'swiveled or tilted by 90 °. Also advantageous is a flying mounting of the turning bars 712, d. H. with a fixed and a free end.
  • the turning bars 712 are each assigned an unillustrated means, which detects the current position of the turning bar 712 - tilted to the left or to the right - and reports it to the machine control or the control station of the machine. These can be, for example, initiators which are activated or deactivated mechanically (switch) or electromagnetically (induction, light barrier) as soon as the turning bar 712 is in one of the intended positions. The printer or a program can then check whether the turning bars 712 are in the position required for the planned production. An error signal may be issued if the position of the turning bar 712 does not match the intended production (or web run).
  • Each turning bar 712 in a preferred embodiment is generally in a direction transverse to the incoming web B; B 'movably arranged in the superstructure 700.
  • the turning bar 712 is adapted to a product or a web run or width b; b 'the Lane B; B 'positionable.
  • the turning bar 712 is for this purpose on an unsigned carriage, z. B. a carriage, a so-called. Wendewagen, arranged, which in a direction transverse to the incoming web B; B 'is movable. This is preferably done by means of a drive, not shown, for. As an electric motor, via a corresponding mechanism, for. B. a spindle drive, belt drive, linear drive).
  • the turning bar 712 as already shown and described for the guide element 308 in Fig. 5, a base body 723 with an interior 727, z. B. a tubular body 723, openings 728 and at least in the openings provided with openings 728 a microporous layer 729 on.
  • the layer 729 covers the openings 728 and extends continuously across the path B with the web; B 'cooperating area, thus forming a continuous surface at least in the of the web B; B 'or partial web B1; B2 intended for wrapping area.
  • the areas for openings 728 and the layer 729 may in principle be selected according to the variants mentioned for the guide element 308 (angular range, 360 ° range).
  • the turning bar 712 may have openings 728 and the layer 729 in the full 360 ° area. Thus, regardless of the inclination against the web B; B 'and regardless of the web guide the same turning bar 712 are used.
  • all four turning bars 712 are pivotable and transversely movable, so that for two partial webs B1; B2 diverse possibilities of successive turning and / or falling are present.
  • the layer 729 is z. Example, as formed in an embodiment of the guide element 308 described above from a microporous material and is designed to be gas permeable. In addition to the o. G. In general, the same material can be used for layer 729 and layer 446. However, the thickness, pore sizes, closed-outer-surface-open area ratio, and / or average number of open pores per unit area for the layer 729 and the layer 446 may be different and targeted.
  • the sintering surface is subjected to an overpressure of at least 1 bar, in particular more than 4 bar. Particularly advantageous is an application of the sintering surface with an overpressure of 5 to 7 bar.
  • the turning bar 712 has z. B. a Au ruined eater of 60 - 100 mm.
  • a wall thickness of the executed as a support tube 723 main body 723 is z. B. greater than 3 mm, in particular greater than 5 mm.
  • porous material can be located in the openings 728 of the carrier tube 723 itself.
  • the porous material outside the opening 728 has a layer thickness that is less than 1 mm. Particularly advantageous is a layer thickness between 0.05 mm and 0.3 mm.
  • the air-permeable material of the lateral surface advantageously has pores with an average pore size of 5 to 50 ⁇ m, in particular 10 to 30 ⁇ m, for the arrangement in the region of the turning bar 712.
  • An opening degree on the outward surface of the porous material 729 is between 3% and 30%, preferably between 10% and 25%.
  • micro-openings are designed as openings of micro-bores, which
  • the embodiments for air outlet, for pressure, for the advantageous dimensioning of outer diameter, wall thickness, layer thickness and / or pore size described for turner bar 712 are equally applicable to the above-described guide elements 302; 308 the printing unit 300, the dryer 500 and / or the otherwise in the description with respect to the micro-openings elements in the infeed 200 of the web guide to the silicone work 716 and in the superstructure 700 for guiding or supporting the web B; B 'apply.
  • the comments on the part-circular, elliptical, parabolic or hyperbolic configuration of the main body from the guide element 308 to a special turning bar 712 or other elements apply.
  • the funnel unit 703 is arranged in an advantageous embodiment, at least one register device 719, z. B. with a movable along a running direction roller 721, by means of a length of a path path of the longitudinal cutting device 701 is changed to the funnel bake. If the superstructure 700 is for processing two partial webs B1; B2 executed, so in principle a register device is sufficient to the two tracks B; B 'align each other in the longitudinal direction.
  • each register means 719 a measuring device for determining the cut register 722, z. B. a scanning head is arranged downstream.
  • the two partial webs B1; B2 to other, not shown partial webs (for example, from a second line of printing units or a second, guided by the printing press web) with respect to.
  • the cut register are aligned before z. B. be summarized with these in the hopper unit 703 to form a strand for further processing.
  • the funnel unit 703 has as main components at least one roller 731, z.
  • a funnel inlet or Trichterzugwalze 731 As a funnel inlet or Trichterzugwalze 731, at least one former 732 and a pair of folding rollers 733 on.
  • the Trichterzugwalze 731 is preferably mechanically independent of other units by its own drive motor, z. As a servomotor, driven. It is preferably regulated with respect to its speed and receives a target value based on a measured value (see below) and a z. B. specified by the machine control setpoint (or setpoint range) for the voltage.
  • the Trichterzugwalze be 731 assigned a plurality of axially juxtaposed rollers 734, which are, for example, groups or individually pneumatic on or off the roller 731 on or off.
  • the superstructure 700 may have a measuring device, not shown, for determining the web tension.
  • the measuring device is z. B. formed as a measuring roller with measuring pin.
  • the web tension is determined by means of the possibly existing measuring device determined and used for voltage regulation via the Trichterzugwalze 731.
  • the Trichterzugwalze 731 associated with a longitudinal cutting device 736 by means of which, for example, a central section of an incoming web B; B 'is feasible.
  • the slitter 736 may also carry a perforator as a perforating means instead of a continuous blade.
  • the longitudinal cutting device 736 is preferably formed of a, for example pneumatically on / off, upper blade unit, which dips in Anstelllage with the blade in a circumferential groove of the Trichterzugwalze 731.
  • the former 732 (with funnel-pull roller 731) is not oriented, as in FIG. 6, such that webs B; B 'straight ahead of these are feasible, but the former 732 is transverse (approximately 90 °) to the direction of the upstream aggregates of the printing press passing through web B; B 'oriented.
  • the Trichterzugwalze 732 is preceded by at least one deflection bar, not shown, which in 45 ° inclination to the transport direction of the incoming web B; B 'but is arranged in the plane.
  • the or, in the case of several guide rollers for a plurality of webs or partial webs are embodied as a non-rotatable deflecting rod in the manner of the described turning bar 712 having a microporous layer.
  • the structure of the comments on the turning bars and Fig. 5 a), b) or c) can be seen accordingly.
  • Fig. 8 shows a schematic section through an advantageous embodiment of the former 732 in the execution of the micro-openings as open pores of a porous material.
  • the former 732 comprises two cheeks 737 (or legs 737) converging towards the bottom, as well as a pair of pull rollers or folding rollers 738 a Vertex of the angle formed by the cheeks 737.
  • the web B; B ' is fed to the former 732 from above parallel to the plane of the drawing, and during passage through the former 732 the side edges of the web B; B 'folded out of the plane of the drawing, so that a simply longitudinally folded path B; B '(or a corresponding strand of webs B; B' or sub-webs B1; B2) results which, in orientation transverse to the plane of the drawing, passes through the draw roller pair 738.
  • the folding takes place in the transition region or an edge between one of the not yet folded web B; B 'facing surface to the area of the cheeks 737 out. In this area, the web B undergoes; B 'without a diminishing measure a high friction.
  • the cheeks 737 (and optionally an edge region of the not yet folded web B, B 'zugewanden surface) of this former 732 are each by a one pressurizable with compressed air inside or cavity 740 enclosing body 741 (housing, eg ), of which the web B; B 'facing side (s) is (are) broken many times and carries a microporous layer 742.
  • An air flow which flows through the openings 743 in the wall of the body 741, the microporous layer 742 from the interior, forms on the surface of an air cushion, the direct contact between the cheeks 737 (or the edge near surface) and the conductive of them Lane B prevented.
  • the web B therefore passes through the former 732 smoothly and evenly without the risk of sticking or damage to the web.
  • the complete former 732 including a cover 739 connecting the two bases 741, may be formed with microporous layer 742.
  • a design is advantageous in which the former 732 in the bending region, ie in the region of the web B deflecting edge, with the openings 743 (openings) and the layer 742 is executed.
  • These openings 743 and the layer 742 can both in the region of the cheeks 737 and in the edge region of Be arranged with funnel surface, ie engage around the folded edge.
  • this folded edge is not sharp-edged, but has a rounding with a radius R.
  • Fig. 9 is a section of an advantageous embodiment is represented by one side of the former 732 with cheek area.
  • the effective for the folding "edge” is formed by a designed as a spar or a tube body 741, which at least in its wrap or contact area of the web B; B 'has the openings 743 and is coated with the microporous layer 742.
  • two such, converging tubes 741 with appropriate bracing to form the former 732 are sufficient.
  • funnel plate 739 which is as shown flush with the effective surface of the spar.
  • this sheet can be wholly or partially executed with openings and the layer 742 and blown out of "down” from a cavity with compressed air (only indicated by dashed lines).
  • the two cavities 740 of the two cheeks 737 can each be closed off, for. B. be formed by each closed tubes. However, as shown in FIG. 8, the areas blown with compressed air and provided with the layer 742 and openings 743 unite in the area of a funnel nose 744 to form a space. Also there are at least in the area of the train B; B 'cooperating surfaces openings and the layer 742 arranged. In a variant to the representation in Fig. 8 can -. B. in uniform coating - the cavity 740 in the nose area, however, be carried out separately from the cavity 740 of the leg areas and have their own supply of compressed air. The nose region and the leg region can then be acted upon, for example, with different pressures (eg higher in the nose region).
  • microporous materials of different properties and / or layer thickness are used for the layer 742 in different regions of the former 732. This applies equally to the case of micro-bores for different diameters and / or different hole density.
  • the layer 742 'in the nose region is formed such that z.
  • the nose region has a layer 742 'of a material whose mean pore size is greater, the proportion of open outer surface per unit area greater and / or the layer thickness is smaller than the material of the layer 742 in the region of the legs 737.
  • the air-permeable material of the leg regions has pores with an average size of 10 - 30 microns and the nose, for example, 25 to 60 .mu.m.
  • a common chamber cavity 740
  • separate chambers which then possibly be acted upon by compressed air of different pressure.
  • the air outlet in the region of the legs 737 for example, 2 to 15 standard cubic meters per m 2 and the one in the nose region at 7 to 20 standard cubic meters per m 2, the condition that the latter is greater than the former.
  • the former 732 preferably has both the aforementioned "edge region" on the side of the cheeks 737 and in the region of the unfolded web B; B 'facing surface, in particular in the area of the nose 744 on the nose surface and in the apex area, the openings 743 and the layer 742 on.
  • the rollers of the pair of folding rollers 738 are designed to be individually adjustable in their spreading angle in a direction perpendicular to the strand.
  • the pair of folding rollers 738 together or its rollers individually along the strand on the folding hopper 732 out or made adjustable away from it.
  • the former 732 is alone or together with the pair of rollers 733 in the horizontal in and against the direction of the entering into the folding unit web B; B 'arranged movably.
  • the folding roller pair 738 is z. B. for the removal of air cushions, each strand side in each case a further roller 746 downstream, with which the strand successively cooperates in a slightly S-shaped guide.
  • this has at different with the web B; B 'co-acting bodies guide and / or support elements with micro-openings to form an air cushion.
  • At least two turning bars 712 in the superstructure, and at least two guiding elements 308 in at least one printing unit 300 and at least one guiding element 308 in another printing unit 300 with micro-openings advantageously at least the first with the web B; B 'cooperating guide 501 be carried out in the dryer 500 with micro-openings.
  • an advantageous supplement can be at least form cheeks 737 of a former 732 with micro-openings.
  • the micro-openings of the former 732 with respect to the air passage different - especially higher - to the micro-openings of guide elements 308, 710; 720; 720 ', over which the web B; B 'is guided in straight ahead, that is aligned transversely to the transport direction T at 90 ° angle.
  • guide elements 308, 710; 720; 720 ' may also differ the micro-openings of the transport direction in particular inclined by 45 ° guide elements 712. The air outlet should then be larger in the latter.
  • the differences in the air outlet are in the case of the porous material, for example, on the average pore size, the layer thickness and / or possibly the hole density of the underlying body 441; 723 causes. In the case of microbores these are the diameter and / or the hole density.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Separation, Sorting, Adjustment, Or Bending Of Sheets To Be Conveyed (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Paper (AREA)
  • Drying Of Solid Materials (AREA)
  • Making Paper Articles (AREA)
  • Rotary Presses (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Steering Control In Accordance With Driving Conditions (AREA)
  • Soil Working Implements (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)
  • Advancing Webs (AREA)

Claims (17)

  1. Elément de guidage dans un sécheur (500) d'une machine à imprimer, comprenant une pluralité de micro-ouvertures susceptibles d'être traversées par un écoulement d'air comprimé, au moins sur sa face tournée vers la bande (B ; B'), l'élément de guidage (501) étant réalisé pour assurer le guidage d'une bande entrante (B ; B'), et où l'élément de guidage (501) présente un matériau (446) microporeux, perméable à l'air, caractérisé en ce que le matériau (446) microporeux est réalisé sous la forme de revêtement (446) sur un corps de base (441) rigide, perméable à l'air, présentant dans une paroi (443) des ouvertures (444) traversantes radialement jusqu'à la surface d'enveloppe et où le revêtement présente une épaisseur inférieure à 1 mm.
  2. Elément de guidage selon la revendication 1, caractérisé en ce que les ouvertures (444) réalisées dans la paroi sont prévues dans une plage de 360° complète de l'élément de guidage (501).
  3. Elément de guidage selon la revendication 1, caractérisé en ce que des ouvertures (444) sont disposées uniquement dans la plage angulaire prévue pour l'enlacement.
  4. Elément de guidage selon la revendication 1, caractérisé en ce que les ouvertures (444) sont réalisées sous la forme de micro-ouvertures avec un diamètre inférieur à 500 µm.
  5. Elément de guidage selon la revendication 4, caractérisé en ce que les micro-ouvertures sont réalisées sous forme de pores ouverts d'un matériau (446) poreux perméable à l'air.
  6. Elément de guidage selon la revendication 5, caractérisé en ce que les pores du matériau poreux perméable à l'air présentent un diamètre moyen de 5 à 50 µm, en particulier, de 10 à 30 µm.
  7. Elément de guidage selon la revendication 5, caractérisé en ce que le matériau poreux (446) est réalisé sous forme de matériau fritté (446), en particulier de métal fritté.
  8. Elément de guidage selon la revendication 1, caractérisé en ce que la couche (446) présente une épaisseur de 0,05 mm à 0,3 mm.
  9. Elément de guidage selon la revendication 1, caractérisé en ce que le corps de base (441) est de forme tubulaire.
  10. Elément de guidage selon la revendication 9, caractérisé en ce qu'une épaisseur de paroi du tube support est supérieure à 3 mm, en particulier supérieure à 5 mm.
  11. Elément de guidage selon la revendication 1, caractérisé en ce qu'un degré d'ouverture de la surface, tournée vers l'extérieur, du matériau (446) poreux est dans la fourchette comprise entre 3 % et 30 %, de préférence 10 % et 25 %.
  12. Elément de guidage dans un sécheur (500) d'une machine à imprimer comprenant une pluralité de micro-ouvertures susceptibles d'être traversées par un écoulement d'air comprimé, au moins sur sa face tournée vers la bande (B ; B'), l'élément de guidage (501) étant réalisé pour guider une bande (B ; B') entrante, caractérisé en ce que les ouvertures sont réalisées sous la forme de micro-ouvertures tournées vers l'extérieur, de micro-perçages dans une paroi (441), délimitant vers l'extérieur l'élément de guidage (501), en ce que le diamètre des micro-ouvertures est inférieur ou égal à 300 µm, en particulier dans la fourchette entre 60 et 150 µm, et en ce qu'une densité en trous, c'est-à-dire un nombre d'ouvertures par unité de surface, pour la surface munie des micro-ouvertures, est d'au moins 0,2/mm2.
  13. Elément de guidage selon la revendication 1 ou 12, caractérisé en ce que de 1 à 20 mètres cube normaux d'air par heure sortent d'un mètre carré de surface d'enveloppe présentant les ouvertures.
  14. Elément de guidage selon la revendication 1, caractérisé en ce que de 2 à 15, en particulier de 3 à 7 mètres cube normaux d'air par heure sortent d'un mètre carré de surface d'enveloppe présentant les ouvertures.
  15. Elément de guidage selon la revendication 5, caractérisé en ce que le matériau poreux (446) est sollicité depuis l'intérieur par une surpression d'au moins 1 bar.
  16. Elément de guidage selon la revendication 5, caractérisé en ce que le matériau poreux (446) est sollicité par le fluide depuis l'intérieur, avec une surpression supérieure à 4 bar, en particulier, de 5 à 7 bar.
  17. Elément de guidage selon la revendication 1 ou 12, caractérisé en ce que le diamètre extérieur de l'élément de guidage (501) est de 60 à 100 mm.
EP05106744A 2003-02-19 2004-01-21 Eléments de guide dans un dispositif à sécher d'une machine de production ou de traitement de bandes de matière Expired - Lifetime EP1621499B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10307089A DE10307089B4 (de) 2002-10-19 2003-02-19 Rakel einer Druckmaschine
DE10331595 2003-07-11
EP04703801A EP1594784B1 (fr) 2003-02-19 2004-01-21 Machine a imprimer une matiere en forme de bande

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
EP04703801A Division EP1594784B1 (fr) 2003-02-19 2004-01-21 Machine a imprimer une matiere en forme de bande

Publications (2)

Publication Number Publication Date
EP1621499A1 EP1621499A1 (fr) 2006-02-01
EP1621499B1 true EP1621499B1 (fr) 2006-08-23

Family

ID=32909527

Family Applications (4)

Application Number Title Priority Date Filing Date
EP06100512A Expired - Lifetime EP1652666B1 (fr) 2003-02-19 2004-01-21 Superstructure pour une machine à imprimer
EP05106744A Expired - Lifetime EP1621499B1 (fr) 2003-02-19 2004-01-21 Eléments de guide dans un dispositif à sécher d'une machine de production ou de traitement de bandes de matière
EP05106738A Expired - Lifetime EP1621500B1 (fr) 2003-02-19 2004-01-21 Machine d'impression comprenant un dispositif de retournement
EP04703801A Expired - Lifetime EP1594784B1 (fr) 2003-02-19 2004-01-21 Machine a imprimer une matiere en forme de bande

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP06100512A Expired - Lifetime EP1652666B1 (fr) 2003-02-19 2004-01-21 Superstructure pour une machine à imprimer

Family Applications After (2)

Application Number Title Priority Date Filing Date
EP05106738A Expired - Lifetime EP1621500B1 (fr) 2003-02-19 2004-01-21 Machine d'impression comprenant un dispositif de retournement
EP04703801A Expired - Lifetime EP1594784B1 (fr) 2003-02-19 2004-01-21 Machine a imprimer une matiere en forme de bande

Country Status (4)

Country Link
EP (4) EP1652666B1 (fr)
AT (4) ATE347489T1 (fr)
DE (4) DE502004006498D1 (fr)
WO (1) WO2004074151A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004043071B3 (de) 2004-09-06 2006-03-30 Koenig & Bauer Ag Oberbau
EP3406553B1 (fr) * 2007-09-20 2020-05-13 Komori Corporation Procédé de commande et appareil pour presse d'impression de matériau en forme de bande
DE102007047844B4 (de) * 2007-11-22 2015-08-13 Koenig & Bauer Aktiengesellschaft Bahnleiteinrichtung einer Druckmaschine sowie Strangführung im Überbau
DE202008012699U1 (de) * 2008-09-24 2009-01-02 Wifag Maschinenfabrik Ag Vorrichtung zur Seitenregistrierung von Teilbahnen

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Publication number Priority date Publication date Assignee Title
US3245334A (en) * 1962-08-27 1966-04-12 Du Pont Noncontacting sealing method and apparatus
US3518940A (en) * 1967-06-30 1970-07-07 Cameron Machine Co Endless belt printing machine
DE2026355B1 (de) * 1970-05-29 1971-11-18 Roland Offsetmaschinenfabrik Faber & Schleicher Ag, 6050 Offenbach Wendestange zum Umlenken von Papierbahnen
US4176775A (en) * 1977-03-28 1979-12-04 Beloit Corporation Inhibiting noise in sheet spreaders
DE2921757A1 (de) * 1979-05-29 1980-12-04 Maschf Augsburg Nuernberg Ag Verfahren zum herstellen eines trichterbleches fuer einen falztrichter einer rotationsdruckmaschine und danach hergestelltes trichterblech
US4925080A (en) * 1988-10-13 1990-05-15 Beloit Corporation Spreader bar apparatus
WO1991017943A1 (fr) * 1990-05-11 1991-11-28 Liedtke Rudolph J Coussinet d'air pour materiau en bande
DE4335473C2 (de) * 1993-10-18 2001-07-12 Oce Printing Systems Gmbh Wendeeinrichtung für einen bandförmigen Aufzeichnungsträger
DE29501537U1 (de) * 1995-02-01 1995-03-09 Heidelberger Druckmaschinen Ag, 69115 Heidelberg Bogenleiteinrichtung mit Luftversorgungskästen
DE19829094C2 (de) * 1998-06-30 2002-10-24 Roland Man Druckmasch Leiteinrichtung für bogenförmige Bedruckstoffe in einer Druckmaschine
DE19829095C2 (de) * 1998-06-30 2002-04-25 Roland Man Druckmasch Bogenführungseinrichtung in einer Druckmaschine
DE19902936A1 (de) * 1998-12-23 2000-06-29 Bachofen & Meier Ag Buelach Vorrichtung zum berührungslosen Führen oder Behandeln einer laufenden Materialbahn, insbesondere einer Papier- oder Kartonbahn, Metall- oder Kunststoffolie
ATE238218T1 (de) * 1998-12-23 2003-05-15 Bachofen & Meier Ag Maschf Vorrichtung zum berührungslosen führen oder behandeln einer laufenden materialbahn, insbesondere papier- oder kartonbahn, metall- oder kunststoffolie
DE10112416C1 (de) * 2001-03-15 2002-10-02 Koenig & Bauer Ag Wendestange

Also Published As

Publication number Publication date
ATE337249T1 (de) 2006-09-15
DE502004001280D1 (de) 2006-10-05
ATE347489T1 (de) 2006-12-15
DE502004006498D1 (de) 2008-04-24
EP1621500A1 (fr) 2006-02-01
EP1594784A1 (fr) 2005-11-16
DE502004002253D1 (de) 2007-01-18
DE502004000592D1 (de) 2006-06-22
EP1621500B1 (fr) 2008-03-12
EP1594784B1 (fr) 2006-05-17
WO2004074151A1 (fr) 2004-09-02
EP1652666A1 (fr) 2006-05-03
EP1652666B1 (fr) 2006-12-06
EP1621499A1 (fr) 2006-02-01
ATE326417T1 (de) 2006-06-15
ATE388918T1 (de) 2008-03-15

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