EP1634831A1 - Méthode d'étirage d'une bande et dispositif d'étirage d'une bande - Google Patents

Méthode d'étirage d'une bande et dispositif d'étirage d'une bande Download PDF

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Publication number
EP1634831A1
EP1634831A1 EP04405565A EP04405565A EP1634831A1 EP 1634831 A1 EP1634831 A1 EP 1634831A1 EP 04405565 A EP04405565 A EP 04405565A EP 04405565 A EP04405565 A EP 04405565A EP 1634831 A1 EP1634831 A1 EP 1634831A1
Authority
EP
European Patent Office
Prior art keywords
web
deflection
strand
web strand
devices
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.)
Granted
Application number
EP04405565A
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German (de)
English (en)
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EP1634831B1 (fr
Inventor
Reto Weiss
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.)
Wifag Maschinenfabrik AG
Original Assignee
Wifag Maschinenfabrik 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
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Priority to EP04405565A priority Critical patent/EP1634831B1/fr
Priority to DE502004011485T priority patent/DE502004011485D1/de
Priority to AT04405565T priority patent/ATE476389T1/de
Publication of EP1634831A1 publication Critical patent/EP1634831A1/fr
Application granted granted Critical
Publication of EP1634831B1 publication Critical patent/EP1634831B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • 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
    • B65H2301/30—Orientation, displacement, position of the handled material
    • B65H2301/31—Features of transport path
    • B65H2301/311—Features of transport path for transport path in plane of handled material, e.g. geometry
    • B65H2301/3112—S-shaped
    • 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

Definitions

  • the invention relates to a method and apparatus for spreading a web in a web processing machine.
  • the web-processing machine may in particular be a printing press, for example an offset printing press.
  • Preferred examples are web-fed rotary printing presses, such as those used in commercial printing or more preferably in the printing of large newspaper editions.
  • a first web strand and a second web strand are conveyed side by side in a web-processing machine and displaced parallel to one another by an expansion dimension.
  • the Sp Drruc is the measured between the facing edges of the web strands clear distance after the parallel offset.
  • both web strands can be to themselves and relative to each other or it can be offset in parallel only one of the web strands to itself and relative to the other.
  • the first web strand wraps successively around a first deflection device, which forms a first deflection axis for the first web strand, and downstream, a next, second deflection device, which forms a second deflection axis for the first web strand, each with a wrap angle, preferably each with the same wrap angle.
  • the deflection devices are arranged, namely each obliquely to the conveying direction of the incoming first web strand, that the first web strand running from the second deflection device is offset parallel to the first web strand running onto the first deflection device.
  • At least one of the deflection devices is moved from a first position to another, second position, in which the first web strand travels a different path length between the first deflection device and the second deflection device than in the first position.
  • the second position of the displaced deflection device is selected such that the conveying direction which the first web strand has between the deflection devices is not changed by the adjustment.
  • the first web strand therefore runs after the adjustment of the Sp Drssenruces of the same angular position on the outer circumference of the first deflection and at the same angle on the outer circumference of the second deflection on as before the adjustment. Since web tension changes by the spreading depend primarily on changes in the wrap angle, web tension changes are avoided by the spreading method according to the invention.
  • the invention relates not only to a web spreading method, but also to a web spreading device by means of which web strands conveyed side by side in a processing machine can be displaced parallel to one another in order to set the spread dimension.
  • the invention relates not only to the built-in web-processing machine, but also for the first intended Brusp Drusch.
  • the web spreading device comprises a frame, the first deflection device and the second deflection device.
  • the deflecting devices are formed and arranged such that the first web strand is offset in parallel by looping around the deflecting devices and thus the spreading dimension is set entirely or in part.
  • At least one of the deflecting devices, preferably the second deflecting device is adjustably mounted in the frame along a displacement path in order to be able to set the spreading dimension.
  • the device according to the invention is characterized in that the adjustment path is straight and extends in the conveying direction, which has the first web strand between the first and the second deflection device.
  • a distance from the first web strand parallel to the web plane formed by the first web strand between the deflecting Such a choice of the adjustment ensures that the first web strand between the deflecting maintains its conveying direction during the entire adjustment of the deflection.
  • the adjustment movement as such which executes the at least one adjustable deflecting device from the first to the second position, thus does not change the wrap angle with which the first web strand wraps around the first deflecting device and the second deflecting device.
  • the respective wrap angle can be changed at most by the adjustment of an upstream inlet guide or a downstream outlet guide.
  • the wrap angle is always the same in the first and second positions of the at least one adjustable deflection device, and more preferably also in other positions which the deflection devices for the first web strand can advantageously occupy relative to one another. Due to the straightness of the displacement, the wrap angle is invariant to any adjustment movement made along the displacement path between the first position and the second position.
  • the adjustment path preferably extends straight into this position, which is not unavoidable must be the case.
  • the at least one of the deflection devices which is adjusted for the adjustment or adjustment of Sp DrSONes, adjustable not only in a first and a second position, but in more than two different positions in which the first web of strand between the deflection another Path length than travels in the first position, but retains its conveying direction and even more preferably the wrap angle.
  • deflection devices are also provided for the second web strand, of which at least one is adjustable.
  • the deflecting devices provided for the second web strand namely a further first deflecting device and a further second deflecting device
  • the second web strand can be offset in parallel.
  • Deflection devices preferably applies with respect to the deflecting means for the first web strand.
  • the deflecting devices for the web strands each assume such positions that both the first web strand and the second web strand are offset in parallel so as to pass through the parallel offset of both web strands to get the Sp Dahlruc. It is advantageous if the wrap angle with which the first web strand wraps around its associated deflection devices for a parallel offset and the wrap angle with which the second web strand wraps around its associated further deflection devices for a parallel offset are advantageous. This preferably applies to each of the positions which the at least one adjustable deflection device for the first web strand and the at least one further adjustable deflection device for the second web strand can occupy between the respective first and second position.
  • each of the web strands is offset in parallel in each production.
  • the deflecting means for this at least one of the web strands to the conveying direction of the respective web strand obliquely at an angle greater than 85 ° and less than 90 °, preferably at least 87 ° and at most 89 °, should be.
  • the deflection devices which are assigned to the other of the web strands have advantageously at a smaller angle of attack obliquely to the conveying direction of the other web strand, preferably with an angle of attack which is at least 45 ° and at most 85 °, ie an angle of attack from the angle range usual for spreading devices.
  • the feature of the different angles of employment as such, ie without the adjustment paths designed according to the invention, is already advantageous for the reduction of web tension fluctuations, but in turn can advantageously be further developed by such a configuration of the adjustment paths.
  • the web strands may leak after spreading in different directions from the web spreading device. However, they are in the view perpendicular to the strand level of one of the web strands parallel. Preferably, however, they form staggered but parallel planes or a single, common plane when leaving the web spreader.
  • the web strands which are spread apart from one another by means of the web spreading device are conveyed to a processing plant of the processing machine, for example a printing unit of a printing press, during production and are processed there in accordance with the purpose of the processing machine.
  • a processing plant of the processing machine for example a printing unit of a printing press
  • they are printed on one or both sides one or more colors and then further processed to the finished printed product.
  • FIG. 1 shows components of a web-fed rotary printing press comprising a web spreading device according to the invention. Shown is the path of a web to be printed B of a reel changer 1 via a web spreading device to a printing unit 9, which is formed as a printing tower.
  • the spreading device includes a longitudinal cutting device 4, which serves to cut the web B longitudinally into two web strands, namely a first web strand Br and a second web strand Bl, and deflection devices 5 and 6, which serve to form the formed web strands Bl and Br parallel to one another.
  • the splayed web strands Bl and Br are conveyed in the web conveying direction F to a Drucktunn 9 and there printed on both sides multi-colored.
  • the printing tower 9 From the printing tower 9, two cylinder bridges, each formed from two printing on the web strands Bl and Br blanket cylinders and each associated with a plate cylinder, are shown.
  • the printing tower 9 can also comprise further such cylinder bridges in order to print the web strands Bl and Br four-color on both sides, for example.
  • the web strands Bl and Br are either separately or each with at least one further web strand on former, of which a former 20 is shown, or together on a common former 20 and separated in the formers or together in the former longitudinally folded.
  • a folder or more folders can be arranged for cross cutting and Querfalzen.
  • the inlet guide device 3, the longitudinal cutting device 4 and the first deflection device 5 are mounted in a fixed position relative to each other in a frame 2.
  • the inlet guide 3 is a guide roller which is rotatably mounted in the frame 2.
  • the first deflection device 5 is not rotatable.
  • the second deflection device 6 is movably supported linearly guided together with the outlet guide 7 in the frame 2.
  • a linear guide track 11 of the bearing is fixedly connected to the frame 2.
  • the second deflection device 6 and the outlet guide device 7 are continuously movable back and forth along the linear guide 11 between two end positions. One of the two end positions is shown in FIG. 1 in a solid line and the other in a dashed line.
  • a control device 15 controls a drive device 12 based on instructions that can be input to the control device 15 or to a higher-level machine control such that the second deflection device 6 and the outlet guide device 7 assume the desired adjustment position on the adjustment path.
  • FIG. 2 shows the web spreading device in a first state in a plan view of the web plane.
  • the second deflector 6 and the outlet guide 7 are divided in the middle of each in two symmetrical halves.
  • the two halves are independently guided linearly guided on each of a frame-mounted linear guide 11 ( Figure 1) movable.
  • the adjustment paths and also the end positions of the two halves are the same.
  • the movements of the two halves are controlled by the control device 15 via the drive device 12 and optionally also regulated.
  • the two halves can in particular be moved together or individually or else in opposite directions along their adjustment paths and fixed in any position between the end positions.
  • a second left diverter 6l and a second right diverter 6r and a left exit guide 7l and a right exit guide 7r are formed.
  • the second left diverter 6l and the left exit diverter 7l are associated with the left web strand Bl, i. they only come in contact with the left-hand track Bl.
  • the second right hand deflector 6r and right hand runner 7r are associated with the right hand web strand Br, i. they only come in contact with the right-hand track Br. Accordingly, there is also an assignment in the first deflection device 5.
  • the first deflection device 5 is, however, fixed in the frame at the two opposite frame sides 2l and 2r.
  • the first deflection device 5 functionally breaks down into a first left-hand deflection device 5l and a first right-hand deflection device 5r.
  • the deflection devices 5l, 5r, 6l and 6r each have the same cross section. In the exemplary embodiment, they are each formed as circular rods.
  • the first deflection devices 5l and 5r and in particular the deflection axes formed by them form in the plan view of the plane of the incoming web B an arrow shape, the tip of which faces the web conveying direction F.
  • the first deflection devices 5l and 5r are firmly connected to one another in the middle in the area of the "arrowhead". The tip itself is worked around to avoid the risk of scoring the web B.
  • the longitudinal cutting device 4 and the tip formed by the first deflecting means 5l and 5r lie exactly on the machine axis S.
  • the arrangement of the parts of the spreading device associated with the left web strand Bl is symmetrical with the arrangement of the parts associated with the right web strand Br are. In that regard, the machine axis S also simultaneously forms an axis of symmetry of the spreading device.
  • the outlet guide means 7l and 7r are arranged relative to the second deflecting means 6l and 6r so that the web path level defined by the second left deflecting device 61 and the left outlet guide 71 in the case of wrapping and that of the second right deflecting device 6r and the Right outlet guide 7r in the case of wrapping defined Brustranselle is parallel to the orbital plane, which is predetermined by the inlet guide 3 and the two first deflection 5 and 5r in the case of their wrap.
  • the outlet guide devices 7l and 7r form deflection axes pointing perpendicular to the web conveying direction F.
  • the second left-hand deflecting device 61 and the left-hand outlet guide 71 are mounted together on a left-hand carriage 101.
  • the bearing on the carriage 101 is such that the deflection axes of the second left deflection 61 and the left outlet guide 71 relative to the carriage 101 are adjustable at most in the context of tolerance-compensating adjustments.
  • the two carriages 101 and 10r are movable on their respective frame side 2l and 2r each along a separate linear guide 11, wherein the left linear guide 11 is parallel to the right linear guide 11 and is arranged with respect to the web conveying direction F at the same height.
  • the two outlet guide means 7l and 7r may be rotatably mounted on the respective carriage 101 and 10r. Basically, the same applies to the second deflection 61 and 6r, but for the deflection means 6l and 6r of the simpler construction because of the formation is preferred in each case as a non-rotatable rod.
  • the second left-hand deflecting device 61 and the second right-hand deflecting device 6r each assume an adjustment position in which, together with the outlet guide devices 7r and 7l, a single plane parallel to the plane B is arranged plane-parallel Web strands Bl and Br define.
  • the second deflecting means 6l and 6r also form an arrow shape with each other, but with a narrow gap between their free ends, which exactly overlap one another in these positions.
  • the deflection axes formed by the second deflection devices 6l and 6r intersect accordingly.
  • the deflection axes formed by the outlet guide devices 7l and 7r are aligned in these adjustment positions.
  • the web B enters symmetrically to the machine axis S in the spreading device. Because of this track symmetry and the positioning of the second deflection devices 6l and 6r in a common plane, the two web strands Bl and Br are each spread apart to one side away from the machine axis S by the same offset parallel to each other. This results in the Sp Drruc X, which designates the transversely to the web conveying direction F measured clear distance between the web strands Bl and Br. "M" is the distance measured in the web plane between a left boundary line and a right boundary line, up to which the web strands Bl and Br can be displaced parallel to the left outside or right outside with sufficient web width by means of the spreading device.
  • the widths of the web strands Bl and Br are indicated by A, and the widths on both sides of the longitudinal folds Ll and Lr are indicated by A '.
  • the web B runs asymmetrically with respect to the machine axis S into the spreading device.
  • the symmetry longitudinal axis of the web B is denoted by S B. It is laterally offset to the machine axis S.
  • the web B is cut asymmetrically into a left web strand Bl and a right web strand Br by means of the cutting device 4 in accordance with the offset of the axes S and S B.
  • the right-hand carriage 10r with the second right-hand deflecting device 6r and the right-hand outlet guide 7r does not protrude into the path of the right-hand web strand Br and, accordingly, does not have an encircling contact with the right-hand web strand Br.
  • the right-hand web strand Br also does not wrap around the web first right deflection 5r.
  • the right web strand Br is therefore conveyed through without lateral displacement by the spreading device.
  • the adjustment position of the second right deflection 6r and the right outlet guide 7r corresponds to the position shown by dashed lines in Figure 1.
  • the second left-hand deflecting device 61 and the left-hand outlet guide 71 are moved into the path of the left-hand web strand Bl, for example, as far as the other end position shown in solid line in FIG.
  • the reel changer 1 is set in the embodiment of Figure 3 so that the right web strand Br is promoted as far as possible right outside.
  • the right outer edge of the web track Br coincides with the right boundary line of the web spreading device.
  • the right-hand web strand Br is conveyed with its outer edge along the right-most edge for it to the middle of the associated longitudinal seam former 21.
  • the narrower to the double offset of the axes S and S B left web strand Bl would be eccentrically promoted to its associated Lssensfalztrichter 20, although he would pass the web spreading uninfluenced.
  • the second left-hand deflecting device 61 has been moved together with the left-hand outlet guide 71 relative to the first left-hand deflecting device 51 into such an adjustment position that it experiences a parallel displacement corresponding to the spreading dimension X, which is so great that the left-hand web strand Bl is centered is conveyed to the associated Lssensfalztrichter 20.
  • the web B has a different width Z than the web B of the first example shown in FIG.
  • the distance X of the outer edge of the left web strand Bl from the left boundary line corresponds to the spread dimension X.
  • the widths of the web strands Bl and Br are indicated by B and C.
  • the web strands B1 and Br On both sides of the fold lines Ll and Lr, the web strands B1 and Br have the same widths for the center conveyance on the longitudinal fold hoppers 20 and 21, which are indicated for the left web strand Bl with B 'and for the right web strand Br with C'.
  • the web B is conveyed symmetrically to the machine axis S by the paster 1, ie the machine axis S coincides with the central longitudinal axis S B of the web B. Since the longitudinal section is performed on the machine axis S, the two resulting web strands Bl and Br each have the same width A, wherein it is assumed that the width Z of the web is the same as in the web guiding example of FIG.
  • the web spreading device is in the second state. The right-hand web strand Br passes the web spreading device accordingly unaffected. Unlike in the web guiding example of FIG.
  • the right-hand web strand Br has a distance Y from the outermost right-hand edge, so that the right-hand web strand Br would only be longitudinally longitudinally folded as shown in the first web guiding example of FIG. 2, if the web spreading device surrounds it by the parallel offset Y / 2 would offset parallel to the machine axis S to the right outside.
  • the right web strand Br is consequently conveyed eccentrically onto the longitudinal folding hopper 21 and, accordingly, folded longitudinally off-center.
  • the printed image printed on it is correspondingly asymmetrical.
  • the partial width of the right web strand Br to the one side of the longitudinal fold line Lr is denoted by A "and the width differing therefrom to the other side of the longitudinal fold line Lr is denoted by A '".
  • the second left-hand deflection device 61 assumes such an adjustment position relative to the first left-hand deflection device 51 that the left-hand web strand Bl is conveyed centrally onto the longitudinal-folding hopper 20.
  • the parallel offset X of the left web strand Bl corresponds to the Sp Dahlmann.
  • the partial widths on both sides of the longitudinal fold line L1 are the same in the left-hand web strand B1 and accordingly each denoted by A '.
  • the new web Upon entry of a free web start of a new web, the new web is passed from the reel changer 1 via the inlet guide 3 and between the cut-off cutting rollers of the cutter 4. Subsequently, the web start is straight, ie without wrapping the deflectors 51 to 6r and Outlet guide devices 71 and 7r led to the other outlet guide 8 and fed by looping the Auslaut guide 8 and optionally on even more guide devices through the pressure nip or the plurality of pressure column of the printing tower 9 to the formers 20 and 21.
  • the former 20 and 21 may, as already mentioned, be a single former, to which both web strands Bl and Br are brought together.
  • the second deflection devices 6l and 6r and the outlet guide devices 7l and 7r assume their end position shown in dashed lines in FIG. 1, which can also be referred to as a retraction position.
  • the still uncut web at the feeder is also shown in dashed lines and designated B '.
  • the deflecting devices 51 to 6r have blowing air holes on their mantle surfaces, through which the entangling web strands Bl and Br can be exposed to blowing air, as known from turning bars. As soon as one of the deflection devices 51 to 6r is moved against the relevant web strand Bl or Br, the blowing air is switched on.
  • the switching on of the blowing air is of course automated, for example as a function of the adjustment position of the second deflection devices 6l and 6r and preferably under the control of the control device 15.
  • the web level defined by the second deflection devices 6l and 6r and the outlet guide devices 7l and 7r is the web plane defined by the inlet guide device 3 and the first deflection devices 5l and 5r parallel.
  • the web plane between the inlet guide 3 and the first deflection 5l and 5r on the one hand and the Brustransellen between the second deflection 6l and 6r and the outlet guide means 7l and 7r on the other hand are parallel in all adjustment positions.
  • the predetermined by the two linear guides 11 adjustment of the second deflection 6l and 6r and outlet guide 7l and 7r are perpendicular to the plane defined by the inlet guide 3 and the first deflection 5l and 5r web plane.
  • the adjustment paths each have a part of their linear length in the conveying direction F, which have the web strands Bl and Br between the deflecting devices 5 and 6 in the case of their wrap.
  • the pointing in the direction of conveyance F partial lengths extend from the respective position for maximum spread to a position in front of the dashed line in Figure 1 position for zero spread.
  • the second deflection devices 6l and 6r first dive out of the end position of the zero spread in an adjustment in the direction of the end position of the maximum spread in the respective web strand Bl and Br.
  • the wrap angle at which the web strands Bl and Br take the deflection devices 5 and 6 from the adjustment position of the respective first web contact changes continuously up to a further adjustment position. From the further adjustment position, which is referred to below as the first position, up to the position of the maximum spread, the wrap angle of the respective web strand Bl and Br remains unchanged.
  • the first position from which the wrap angle no longer change in the course of the further movement in the direction of the position of the maximum spread, is achieved when, with respect to the left web strand Bl, the left Deflection devices 51 and 61 and with respect to the right web strand Br right deflection 5r and 6r are at the same height.
  • wrap angles are thus not changed in an adjustment of one of the second deflection 6r and 6l from the first position to every other position, which is located between the first position and the position for maximum spread and are in this sense It is also advantageous that the wrap angles are not only invariant per web strand Bl or Br against the possible adjustments of the respectively associated second deflection 61 or 6r, but that the wrap angle at which the left web strand Bl its wraps around both deflection devices 51 and 61, and the wrap angle with which the right-hand web strand Br wraps around its two deflection devices 5r and 6r are the same.
  • the invariance of the wrap angle is already alone per Banhstrang Br and / or Bl advantageous for a web tension control. The equality of the wrap angles of both web strands Bl and Br further simplifies the web tension control.
  • all deflecting devices 51 to 6r have an angle of incidence of 75 ° obliquely to the conveying direction F of the first deflecting device 5, i. In the case of the invariance of the wrap angle of the adjusting movements of the second deflection 6l and 6r, this also already in the respective first position a large parallel offset of the two web strands Bl and Br result.
  • Figures 5 and 6 show a web spreading device according to a second embodiment.
  • the web spreading device of the second embodiment differs from that of the first only with respect to the employment of the right deflection to the conveying direction F of the incoming web strands Br and Bl and an offset of the longitudinal cutter 4.
  • the adjustment paths are also straight over their entire length and each extend over a longitudinal section in the conveying direction F, which have the web strands Bl and Br between the deflecting devices 5 and 6, when the second deflecting devices 6 each assume a position on the adjustment path section extending from the respective first position to the respective position for maximum spreading.
  • the adjustment paths each extend only in the section between these two positions in this conveying direction F.
  • FIG Spreading device of the second embodiment of that of the first embodiment modified so that the conveyed through them web strands Br and Bl are always offset in parallel preferably in each production and wrap their respective associated deflection devices 5 and 6 with always the same wrap angle.
  • the second deflecting devices 5 and 6 are adjusted only for the purpose of pulling in a new track each in the dashed drawn retraction position in which the web start without wrapping the first and second deflecting 5 and 6 can be fed through the spreader through.
  • Figure 6 shows a contrast preferred modification of the spreading device of the first embodiment.
  • the left-hand deflectors 51 and 61 correspond to the baffles 51 and 61 of the first embodiment.
  • the right-hand deflectors are modified from the first embodiment and are therefore designated 5r 'and 6r'.
  • the deflectors 5r 'and 6r' formed deflection axes are again parallel to each other, but with respect to the machine axis S asymmetric to the deflection axes of the left deflecting 51 and 61.
  • the right deflection 5r 'and 6r' and thus the deflecting axes formed by each have an angle ⁇ at an angle to the conveying direction F.
  • the angle of attack ⁇ is greater than the angle of attack ⁇ , below which the left-hand deflecting device 51 and 61 and in particular their deflecting axes point obliquely to the conveying direction F of the incoming left-hand web strand B1.
  • the angle of attack ⁇ should be greater than 85 ° and less than 90 ° and is 87 ° in the exemplary embodiment.
  • the adjustment path length of the second right-hand deflecting device 6r ' is selected such that in the end position for maximum spread the right-hand web strand Br is offset in parallel by the offset 2Y.
  • the longitudinal cutting device 4 is by the dimension Y, d. H. offset by half the maximum offset to the machine axis S.
  • the second right turn 6c takes its first position.
  • the right web strand Br can be laterally corrected within the offset range from 0 to 2Y. In all productions, however, only the range between Y and 2Y is used to obtain the invariance of the wrap angle.
  • the left web strand Bl is offset as in the web guiding examples of Figures 3 and 4 by the amount X parallel to its inlet.
  • the web B has the width Z.
  • the web B is conveyed asymmetrically with respect to the machine axis S in the spreading device. Its right outer edge has the distance Y to the right boundary line.
  • the right-hand deflection devices 5r 'and 6r' serve as web edge control in order to place the right-hand web strand Br with its right web edge on the right-hand boundary line.
  • the right web track Br associated former 21 is in such a distance from the machine axis S arranged that the offset by the offset Y parallel right web strand Br is centered on the former 21.
  • the two web strands Bl and Br are spread apart by a total of the spread dimension X + Y.
  • the adjustment paths of the second deflection devices 6l and 6r on the one hand and 61 and 6r 'on the other hand are perpendicular to the conveying direction F of the incoming web strands Bl and Br.
  • the adjustment paths to the conveying direction F of the incoming web strands Bl and Br also obliquely, d. H. each under a tilt angle, in particular under each of the same angle of inclination, run.

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  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Replacement Of Web Rolls (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
EP04405565A 2004-09-10 2004-09-10 Méthode d'étirage d'une bande et dispositif d'étirage d'une bande Not-in-force EP1634831B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP04405565A EP1634831B1 (fr) 2004-09-10 2004-09-10 Méthode d'étirage d'une bande et dispositif d'étirage d'une bande
DE502004011485T DE502004011485D1 (de) 2004-09-10 2004-09-10 Bahnspreizverfahren und Bahnspreizvorrichtung
AT04405565T ATE476389T1 (de) 2004-09-10 2004-09-10 Bahnspreizverfahren und bahnspreizvorrichtung

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP04405565A EP1634831B1 (fr) 2004-09-10 2004-09-10 Méthode d'étirage d'une bande et dispositif d'étirage d'une bande

Publications (2)

Publication Number Publication Date
EP1634831A1 true EP1634831A1 (fr) 2006-03-15
EP1634831B1 EP1634831B1 (fr) 2010-08-04

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EP04405565A Not-in-force EP1634831B1 (fr) 2004-09-10 2004-09-10 Méthode d'étirage d'une bande et dispositif d'étirage d'une bande

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EP (1) EP1634831B1 (fr)
AT (1) ATE476389T1 (fr)
DE (1) DE502004011485D1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007018444U1 (de) 2007-01-30 2008-07-24 Koenig & Bauer Aktiengesellschaft Druckmaschine
DE102009026059A1 (de) 2009-06-29 2010-12-30 Krones Ag Vorrichtung zum Aufspreizen einer Folienbahn
DE102009044473A1 (de) * 2009-10-05 2011-04-07 Krones Ag Einrichtung zum Führen einer variablen Anzahl von Teilbahnen einer Endlosfolie und Verfahren zum Wechseln einer ersten Anzahl auf eine zweite Anzahl geführter Teilbahnen

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Publication number Priority date Publication date Assignee Title
FR2570686A1 (fr) * 1984-09-27 1986-03-28 Poux Vincent Dispositif pour le reglage de l'ecartement entre deux barres, montees sur un bati, parallelement l'une a l'autre et destinees au guidage d'une bande de matiere pouvant etre pliee, notamment une bande de papier
DE8717253U1 (de) * 1987-01-15 1988-06-23 Benz & Hilgers GmbH, 40470 Düsseldorf Vorrichtung zum Umlenken und seitlichen Auslenken verschiedener, aus einer Materialbahn, beispielsweise einer Papierbahn, durch Längsschnitt erzeugter Streifen
DE10023169A1 (de) 2000-05-11 2001-11-15 Roland Man Druckmasch Doppeltwirkende Spreizeinrichtung zur Spreizung einer Bahn
EP1386869A2 (fr) * 2002-07-30 2004-02-04 Maschinenfabrik Wifag Dispositif pour étirer une bande

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2570686A1 (fr) * 1984-09-27 1986-03-28 Poux Vincent Dispositif pour le reglage de l'ecartement entre deux barres, montees sur un bati, parallelement l'une a l'autre et destinees au guidage d'une bande de matiere pouvant etre pliee, notamment une bande de papier
DE8717253U1 (de) * 1987-01-15 1988-06-23 Benz & Hilgers GmbH, 40470 Düsseldorf Vorrichtung zum Umlenken und seitlichen Auslenken verschiedener, aus einer Materialbahn, beispielsweise einer Papierbahn, durch Längsschnitt erzeugter Streifen
DE10023169A1 (de) 2000-05-11 2001-11-15 Roland Man Druckmasch Doppeltwirkende Spreizeinrichtung zur Spreizung einer Bahn
EP1386869A2 (fr) * 2002-07-30 2004-02-04 Maschinenfabrik Wifag Dispositif pour étirer une bande

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202007018444U1 (de) 2007-01-30 2008-07-24 Koenig & Bauer Aktiengesellschaft Druckmaschine
DE102007004408A1 (de) * 2007-01-30 2008-08-07 Koenig & Bauer Aktiengesellschaft Verfahren zur Kompensation einer Querdehnung einer Bedruckstoffbahn und eine Druckmaschine
DE102007004408B4 (de) * 2007-01-30 2011-12-08 Koenig & Bauer Aktiengesellschaft Verfahren zur Kompensation einer Querdehnung einer Bedruckstoffbahn und eine Druckmaschine
DE102009026059A1 (de) 2009-06-29 2010-12-30 Krones Ag Vorrichtung zum Aufspreizen einer Folienbahn
EP2269931A2 (fr) 2009-06-29 2011-01-05 Krones AG Dispositif d'écartement d'une bande de film
DE102009026059B4 (de) 2009-06-29 2024-02-01 Krones Aktiengesellschaft Vorrichtung zum Aufspreizen einer Folienbahn
DE102009044473A1 (de) * 2009-10-05 2011-04-07 Krones Ag Einrichtung zum Führen einer variablen Anzahl von Teilbahnen einer Endlosfolie und Verfahren zum Wechseln einer ersten Anzahl auf eine zweite Anzahl geführter Teilbahnen
CN102030214A (zh) * 2009-10-05 2011-04-27 克罗内斯股份公司 引导无尽薄膜可变数目分幅的装置和变换分幅数目的方法
EP2305586A3 (fr) * 2009-10-05 2011-08-24 Krones AG Dispositif de transport d'une quantité variable de bandes partielles d'une feuille sans fin et procédé de changement d'une première quantité sur une seconde quantité de bandes partielles transportées
CN102030214B (zh) * 2009-10-05 2014-05-21 克罗内斯股份公司 引导无尽薄膜可变数目分幅的装置和变换分幅数目的方法

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ATE476389T1 (de) 2010-08-15
EP1634831B1 (fr) 2010-08-04

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