EP0729910A2 - Cylindre pour appareil de pliage ainsi qu'un appareil de pliage - Google Patents

Cylindre pour appareil de pliage ainsi qu'un appareil de pliage Download PDF

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Publication number
EP0729910A2
EP0729910A2 EP96102517A EP96102517A EP0729910A2 EP 0729910 A2 EP0729910 A2 EP 0729910A2 EP 96102517 A EP96102517 A EP 96102517A EP 96102517 A EP96102517 A EP 96102517A EP 0729910 A2 EP0729910 A2 EP 0729910A2
Authority
EP
European Patent Office
Prior art keywords
holding
rotor
working
runner
working direction
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
EP96102517A
Other languages
German (de)
English (en)
Other versions
EP0729910A3 (fr
EP0729910B1 (fr
Inventor
Klaus Kirsch
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.)
Winkler and Duennebier GmbH
Original Assignee
Individual
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 DE19507351A external-priority patent/DE19507351A1/de
Application filed by Individual filed Critical Individual
Publication of EP0729910A2 publication Critical patent/EP0729910A2/fr
Publication of EP0729910A3 publication Critical patent/EP0729910A3/fr
Application granted granted Critical
Publication of EP0729910B1 publication Critical patent/EP0729910B1/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
    • B65H45/16—Rotary folders
    • B65H45/162—Rotary folders with folding jaw cylinders
    • B65H45/165—Details of sheet gripping means therefor
    • 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
    • B65H45/16—Rotary folders
    • B65H45/162—Rotary folders with folding jaw cylinders
    • B65H45/168—Rotary folders with folding jaw cylinders having changeable mode of operation
    • 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
    • B65H45/28—Folding in combination with cutting

Definitions

  • the invention relates to a runner or a folding device or the like provided therewith, with which flat sheet materials, e.g. Paper, cellulose, nonwovens or the like, can be folded one or more times or in mutually transverse directions in order to form a folded unit, such as a hygiene cloth, dust cloth, cleaning cloth, drying cloth, from a flexible or pliable blank that is initially spread out flat. to create a napkin or the like.
  • flat sheet materials e.g. Paper, cellulose, nonwovens or the like
  • a ply web can first be withdrawn from a roller store in a conveying or its longitudinal direction, essentially continuously, and after any preceding, single or multiple longitudinal folding, it can be processed continuously with one or more working runners of the type mentioned. First, separate and consecutive blanks are separated from the front end of the layer web by cross-sections, which are then folded one or more times across the runner in alternating passes and then transferred to a tray in a horizontal or upright stack formation.
  • the Processing of the blanks expediently without punctures penetrating the sheet position or front and / or side edge trimmings after the longitudinal and / or transverse folding, but in the mentioned run with a smoothing preceding the respective folding, motif printing and / or full surface or edge embossing of the layer web, after which the cross-cutting takes place in two or more simultaneous juxtaposed benefit paths or cuts to be processed on the same work processes.
  • the unit can be folded in a V, M, N and / or C shape with longitudinal folds, the fold legs being able to have the same or different lengths as those of transverse folds and this length and that of the fully folded unit can be changed during operation can.
  • the handover or processing on the respective runner can also take place without folding.
  • the respective runner such as a rotary or roller runner, has receiving surfaces for the sheet layers which extend in the working direction and holding means for fixing the front end of the sheet web and / or the individual sheet layer.
  • holding means for fixing the front end of the sheet web and / or the individual sheet layer.
  • clamping means which engage in a clamping manner, or in addition to this
  • retaining means are advantageously also provided which essentially engage in a force-locking manner in such a way that tensile forces exerted on the material permit its sliding displacement on the receiving surface without the material breaks across the tensile stress.
  • Such holding means can be, for example, adhesive or suction means, which press the material against the receiving surface even at an edge distance of at least 1 cm with a predetermined holding force.
  • These holding means have functional properties, namely a predetermined static or sliding friction between the receiving surface and the material, positions of the holding zones with respect to the rotor body, distances between the possibly several holding zones or corresponding extensions of the respective holding zone in the working direction or transversely related to the rotor body in addition, a mutual relationship of the area-specific holding force of at least two holding zones, absolute and above zero holding forces in the holding zones and holding forces depending on the distance of the respective holding zone from a reference base which is fixed or fixed in the working direction.
  • a holding zone is preferably to be understood as an area which includes several to a large number of such places, a holding zone also being understood as a partial area of a larger holding area over which essentially constant holding forces act.
  • Runners with holding means of the type described have different work functions over their repetitive way to work, for example they should put the ply web under predetermined tensile stress, cause cornering forces, enable a slip-free hold and hold the material with slip, release the material if necessary with folding, leg displacements within Prevent folded units, allow cross separations, allow format changes of the material or the folded units, etc. It has proven difficult to design the work surface or the holding means so that they can meet several of these requirements.
  • the invention is also based on the object of creating a runner or a folding device in which disadvantages of known designs or of the type described are avoided and which in particular enables the functional properties of the runner to be adapted to the respective requirements.
  • the respective runner can be equipped with arrangements or tools for different work, e.g. each with a single or a plurality of cross-cutting knives spaced apart in the working direction, counter knives, fold inner molds, fold outer molds, transfer means for transferring the cut from a runner or a work station to or to the next and / or with other arrangements, the said holding means also may be missing.
  • the rotor can be driven by suitable gears, e.g. Double planetary gear, positively controlled synchronously with one or more other runners or relatively moved during operation in a rectified phase shift in order to change the format of the respective folding leg or the entire unit or the like.
  • Such gears or similar actuating devices are suitable for changing the respective functional property even during the runtime operation of the runner, so that it is possible to change over to different folded or similar units during the production folding device.
  • the positive holding forces in the holding zones fixed to the runner change as a function of the working movement, for example, before the cutting of the blank, secure the front end of the layer web particularly strongly and therefore guided laterally, after transverse separation, for example until the securing of the position takes place of the material by a next runner are less and for those legs of the blank which are subtracted from the receiving surface against the direction of travel of the runner are again reduced to canceled.
  • this trailing leg of material is briefly relieved of the holding forces for tightening, after which the holding forces immediately and before or for carrying out a cross-section which frees this material leg immediately increases again will.
  • this processing simply avoids skewing the material.
  • At least one of the functional properties can be changed, the change being able to be brought about by converting or changing parts and / or an adjusting device, so that a changeover is possible only by means of an adjusting movement and without any other assembly work.
  • the distance of the respective holding area from the reference base and / or its extension relative to the reference base or the runner can advantageously be changed, so that the material in any partial zones and over any surface areas transversely and / or parallel to the working direction with the same or depending on the requirements different positive holding forces can be secured.
  • the runner works in the area of work zones which follow one another in and / or transversely to the working direction, cause movements of at least part of the material transversely to the receiving surface or material processing and mostly represent work stations in which the receiving area of the runner engages with the Recording area of a counter-runner stands.
  • at least one control element is advantageously provided which, in the case of a positional securing by fluid pressure in the manner of an adjustable orifice, one Control spool or the like. Can be formed. Its control or aperture opening can lie completely laterally outside the working width and / or completely within the working width of the runner.
  • means can also be provided to select or change at least one of the functional properties in zones lying next to one another transversely to the working direction, in particular to change them mutually or independently of one another.
  • the holding forces in such zones can be selected to be different, positive or zero holding forces can be brought about in at least two holding zones.
  • the material has at least one fold approximately parallel to the working direction, such as a longitudinal fold, or if the material lies on the receiving surface with at least two layers of material legs lying one on top of the other, it is advisable to have a higher holding force in the area of the free leg end of the material leg removed from the receiving surface than in the opposite, parallel edge region of the material to cause a mutual displacement of the To prevent material layers and therefore a change in the position of a fold or the like.
  • the changeability of the respective functional property can also be brought about by mutual adjustment of the rotor or receiving bodies or of sections of the receiving surfaces in and / or transversely to the working direction, as a result of which the arrangements or tools mentioned, possibly including holding zones, related to the rotor body , can be changed in their position or in their mutual distance.
  • the runner expediently consists of two or more individual bodies which can be adjusted relative to one another and which can be adjusted relative to one another with the adjusting device or by retrofitting with the rotor remaining in its mounting, the machine frame or its drive connection. This allows tool distances, distances between adjacent holding zones and / or the sizes or surface dimensions of these holding zones to be changed, e.g. to set different blank sizes. Both individual bodies form separate holding zones.
  • the receiving surfaces or holding zones can be partially or essentially completely formed by components which are formed separately from the respective rotor body and are fastened to its working side, in particular in a non-destructive manner, and can be replaced.
  • a component which is expediently also formed or fastened separately from the tool closest to it, can cover one or two adjacent rotor segments which are adjustable in relation to one another in the working direction or the width of the segment flanks which may be formed between their mutually facing segments form changeable segment gap.
  • This gap can thus form a pressure or vacuum chamber which extends approximately radially to the inner shaft and which forms the receiving surface is closed by the named component, possibly up to pressure or suction openings.
  • the respective component expediently extends approximately to an area of the rotor body that is offset transversely with respect to the receiving surface or to its flank.
  • This transversely offset region can be a receiving recess for a tool or an outwardly projecting tool itself, in which case the back surface of the tool can form an almost gap-free continuation of the associated section of the receiving surface or holding zone as far as the working area or the working edge of the tool.
  • the associated section of the receiving surface is always covered by these two cover or Sheath segments formed.
  • the deck segment which is shorter in the working direction, with a projecting section expediently engages under the other deck segment partially in a direction away from the associated tool, so that the associated section of the receiving surface has a small step.
  • the height of this step can be kept very small or less than 3 or 2 mm and form a smooth transition by making the outer deck segment very thin or by chamfering the overlapping transverse edge.
  • the respective runner segment expediently has an end of one or more cover elements protruding in opposite directions, both of which overlap in the manner described, but cover segments which are fastened to separate runner segments lying on both sides of the first-mentioned runner segment.
  • One of the segment ends mentioned is overhanging the associated flank of its runner segment to bridge the gap, while the other, in particular against the working direction, ends with the other flank of its runner segment, so that the gap adjoining this flank is covered by a cover segment of the adjacent runner segment.
  • One to all of the above-mentioned deck segments can form holding zones, for example can be designed as a perforated plate, the perforation of which is directly connected to chamber-shaped main channels of the associated rotor body or to the fluid chamber formed by the gap.
  • the main channels can thereby be produced as pocket-shaped or axially groove-shaped depressions in the outer circumference and / or at least one flank of the associated rotor segment and can then be closed directly by the cover segment or a separate closure member on the open longitudinal side of the groove.
  • the cover segment then lies only on the longitudinal edges of axial or similar webs of the rotor segment, which separate adjacent main channels or a main channel from the adjacent outer flank of the rotor segment and extend directly from the hub of the rotor segment.
  • the main channels can thus have very large or larger volumes than the rest of the rotor segment, as a result of which pressure fluctuations at the suction openings or in the channels are reduced. Due to the very short, same width as the respective branch ducts having the suction opening within the respective deck segment, frictional losses of the flow are also reduced, whereby the width of each branch duct can be greater than its length.
  • the production of the suction openings or the production of very smooth receiving surfaces is also considerably simplified and the grid distribution of the suction openings can be changed by exchanging the respective deck segment.
  • the respective rotor segment can be produced as a molded or die-cast body, the Main channels or lateral connection channels are formed and do not require any further processing of their inner surfaces.
  • At least one rotor body is formed in one piece on one or both end faces with an end flange extending approximately to its outer circumference or with the associated bearing journal over a larger area of its working width, the end flange forming a control disk of the suction control can or closes the adjacent main channels at the associated end.
  • Such a one-piece ring flange can also be provided between adjacent panel widths and separate adjacent main channels over the working width.
  • the rotor body formed in this way in particular in each case between adjacent ring flanges, can form continuous receiving pockets for the rotor segments of the other rotor body, which are then mounted without axial play between the flanges lying on both sides and on the inside of the first rotor body with the associated control shaft facing away from the receiving surface or the like are firmly connected.
  • At least two of the individual bodies are advantageously mounted separately on at least one side of the working width directly on the machine frame or are provided with separate inlets for the driving force, so that there is a very high stability which, like the other designs described, significantly increases the performance of material processing without allows undesirable vibrations. Furthermore, the two individual runners can be adjusted against one another at any time during the run and also driven synchronously via a phase shift of the drive introduction.
  • the runner can also be designed for the optional picking up or processing of material with different numbers of layers or folds without any structural modification of the runner itself.
  • the runner can take over the material to form a first transverse fold or a second transverse fold. If separate work stations are provided one behind the other in the working direction of the runner, the material can optionally be transferred to the runner at a work station or at the other work station in which the material is already provided with a first fold.
  • the material can still pass through the first-mentioned workstation, but without being taken over by the runner, without the need for structural modifications or changes in the passage area of this workstation.
  • the folding device can be converted in a very simple manner to the production of different numbers of longitudinal or transverse folds, at least one of the actuating devices being suitable for the optional commissioning of the respective work station.
  • the actuating device can also be used to selectively start and stop at least one rotor which is used to produce one of the folds mentioned. By decommissioning the otherwise possible production of a further fold can be avoided and made possible again by commissioning. It is conceivable for this purpose to uncouple the respective rotor from the drive, to bring it into a predetermined position with regard to its working movement or operating position, without disassembling the rest of the device for itself from its position or the like.
  • the folding device 1 which is removable and replaceable on a foundation bracket with a bearing frame 2, is used to produce one or more longitudinal and / or Cross folds or folds, so that fewer or more folded units 7, 8 are formed from a material web 5 via blanks 6.
  • a driven preference 4 is provided, the conveyor runners acting on both sides of the longitudinally folded material web 5 and essentially all other runners 10 to 14 of the folding device by a central drive, for example via a clock shaft, are driven.
  • the material 5 Immediately after the material 5 has left the friction drive 4 downward, it arrives in a separating device 9 and then optionally via a part or all of the runners 10 to 14 also provided, optionally via intermediate sections, in part or all of stations 15 to 20 or devices or Pass-through gaps in which the material is subjected to different treatments, after which it is placed in the last station 17 at the exit of the folding device 1 in a lying or standing stack.
  • the material can optionally be provided with a fold or with at least one further fold only in a transfer or folding device 16, for which purpose the material from the device 16 successively in three transfer or folding devices 18, 19, 20 and finally on the same end path arrives at the tray 17 as previously described.
  • the devices 18, 20 can thus be taken out of operation and are also each formed by the functional components forming the devices 15, 16, while the device 19 is formed solely by the components 11, 14.
  • the respective device 15 to 20 processes or treats the material during the continuous run by a gap or the like, which is limited in each case by two working runners 10 to 14.
  • the layer web 5 is drawn off from a storage roll (not shown in more detail) via length compensation dancers and a smoothing unit from a subsequent take-off conveyor, the conveying speed of which can be regulated independently of the drive of the devices 15 to 20.
  • the web 5 then passes through a web edge control, at least one to about eight printing units, a heated drying section, at least one embossing unit and possibly a longitudinal separating device in which it can be divided into two or more adjacent widths without trimming.
  • the respective useful web can then get into the associated longitudinal folder 3.
  • the material 5 can have one or more layers in the storage state and can have, for example, 17 to 21 g / m 2 and weight per layer.
  • the web 5 expediently has a width of approximately 500, more than 800 or more than 1000 mm, which essentially determines the working width of the respective runner, wherein it consists of a compressed fibrous substrate, for example made of cellulose, plastic, tissue or the like.
  • the respective device 15, 16, 18, 19, 20 is formed by the interaction of two circumferences or receiving surfaces of runners in the narrowest gap area or tangential point, of which the runners 10, 11, 14 each have at least two or three devices 15, 16, 18 and 18, 19 and 18, 20 are associated. At least one of these runners, for example the runner 12, can also have four devices spaced apart along its receiving surface, for example instead of one delivery point, two transfer points on the runner distributed over its circumference, which the units 8 optionally deliver to two separate stacking points. After leaving each gap zone, the material 5 to 8 is taken as a whole by the receiving runner over an arc path of approximately 90 °, 180 ° to approximately 270 ° and is thereby taken over in an opposite curved path or direction of movement.
  • subsequent cuts 6 are separated from the material web 5 by cross-sections when these are placed almost completely around the outer circumference of the associated runner 10 and are secured relative to the latter.
  • the respective blank 6 can be handed over to the runner 12 after an arc path between 90 ° and 180 ° in the area of the device 16, whereby it is first grasped by the runner 12 between its ends and then its trailing leg essentially by rolling or sliding to the Runner 12 is released and at the same time its leading leg is drawn against the running direction of the runner 10 and placed on the trailing leg.
  • the blank 6 can also be taken from station 16 over a larger arc angle between 180 ° and 270 ° to station 18 and there in the manner described folded crosswise with the rotor 14 and moved further over one of the arc angles mentioned or approximately 270 ° to the station 19.
  • the unit 7, which has been pre-folded one or more times in the transverse direction, is transferred to the rotor 11 and, as in the case of the station 15, a pre-fold similar to a linear bulge is applied by an inner former 23 or 26.
  • the unit 7 is fed to the station 20 over an arc angle of approximately 90 ° and provided with a further transverse folding in the manner described, with delivery to the rotor 12, and from the rotor 12 over a smaller arc angle of approximately 90 ° to the same location Tray 17 fed.
  • the unit 8 then has at least one further transverse fold compared to the previously mentioned method of operation, at least two or an even number of further rotors being provided for producing each further fold, via which the material from the rotor 10 is fed to the rotor 12 on a bypass route becomes.
  • the working direction of the runners 10, 12, 13 is the same in both working methods, while in the case of directly interacting runners it is opposite at approximately the same speed.
  • At least one to all the runners 10 to 14 perform a circumferential or rotary movement, so that they can be designed as cylinders or rollers which are mounted on the frame 2 about horizontal parallel axes of rotation on both sides of the working width.
  • Each runner can have one or more tools 21 to 30 distributed over the circumference in order to carry out the desired work in the associated stations.
  • Each of the runners 10, 11, 12, 14 is designed as a cut securing, transport, takeover and transfer runner, the runners 12, 14 on the one hand and 10, 11 on the other hand having essentially the same functions.
  • the runner 13 is designed as a cutting rotor, the rotor 10 additionally as a counter and pre-folding rotor and the rotor 12 as a folding and dispensing rotor.
  • the pairs of runners 10, 12 or 11, 14 on the one hand and 10, 14 or 11, 12 on the other are each in axial planes that are diverging approximately parallel or downwards at an acute angle or are inclined in opposite directions at approximately 45 °, the runners 11, 14 lie essentially above the respectively associated rotor 12, 10.
  • Each runner can carry out a single or two or more similar operations on a corresponding number of units 6 to 8 with each full revolution, depending on how large its effective scope is.
  • the rotors 10, 11, 13, 14 have the same effective circumferences and in each case two tool arrangements 21 to 28 which are offset from one another by approximately 180 ° and act in the same way.
  • the rotor 12 has a circumference that is half larger, with three tool arrangements 28, 29 offset by approximately 120 °.
  • the rotor 13 lies on the side of the rotor 10 which is essentially remote from the runners 11, 12, 14 and does not take over the material 5 on its circumference. On the circumference it carries two cutting knives 21 which, in a continuous pass, cut off the blanks 6 from the web 5 with an adjustable length in succession with counter knives 22 on the circumference of the rotor 10 in the area of the gap 9.
  • the peripheral surface of the rotor 10, 11, 12, 14 forms the receiving surface for the material 5 to 8, which bears on this over a large area.
  • Each of these runners has holding means 25, 27, 29, 30 for securing the position of the material, which can have an exciting effect transversely to the receiving surface over a larger surface area and / or approximately parallel to the receiving surface only in a front edge region in the working direction, so that the trailing part of the material is tightened without immediate parallel position securing.
  • the runner 10 has securing or holding means 30 which extend essentially over the entire circumference and / or the working width and by means of which the front end of the web 5 and the blank 6 from the gap 9 and therefore even before separation over most of the Material area is determined. This results in good lateral guidance from the gap 9 when the web 5 is longitudinally tensioned.
  • two folding inner formers 23, such as folding knives, folding strips or the like, are provided on the rotor 10.
  • the respective blank 6 is placed over a folding knife 23 with its side facing the runner 10 before it is separated from the web 5 as it passes through the nip 9, thereby producing a bead-like protruding pre-fold on the other side, optionally in the area of the nip 16 or the nip 18 is used over a partial circumference of the runner 12 or 14 to complete the folding.
  • the runners 11, 14 for pre-folding and the runners 11, 12 for finished folding also work together in the area of the gaps 19, 20.
  • the tools 24, 25 and 28, 29 of the rotors 12, 14 can therefore be essentially the same in terms of their functions and / or configurations.
  • the tools 24, 28 form fold outer formers or pre-fold and finish fold receptacles, while the holding means 25, 29 secure the material on the fold engaging in the receptacles 24, 28 angled inward.
  • They are grippers that can be moved in a controlled manner relative to the associated rotor 12, 14, namely so-called folding jaws, which hold the material by clamping only frictionally, but so securely that it cannot execute any relative movement in the working direction and sideways relative to the rotor until delivery, but instead for this relief of the clamping force is required.
  • the runners 10, 12, 13 and 11, 14 and their bearings have the same distances from each other in each operating position.
  • the widths of the columns 18, 20 can e.g. can be enlarged by a common radial lifting of the runners 11, 14 with a separate storage frame in order to provide the folding only in the area of the gap 16.
  • the runners 11, 14 can also be stopped by interrupting the drive connection.
  • the latter has depressions or gap-shaped free spaces 31 on the circumference into which the tool 23, 26 e.g. can intervene to form the pre-fold so that the respective gap 31 can also act in the manner of a tool or fold outer former.
  • the runners 10 to 14 are driven via four separate, parallel drive planes 32 to 35, in each of which gear wheels or working runners 36 to 45 meshing with one another.
  • the driving force is transmitted from one to the next rotor 13, 10, 14, 11, 12 or 13, 10, 12, so that all the runners are driven synchronously with approximately the same peripheral speed.
  • a rotor 36 arranged on the shaft of the rotor 13 drives a first rotor body 46 of the rotor 10 directly via a rotor 37, and a second, with the rotor 40, via intermediate rotor 38, 39 of a phase adjusting device 50, such as a double planetary gear Firmly connected rotor part 47.
  • the tools 22, 23 can be adjusted relative to one another about the axis of the rotor 10, in which the rotor 37, 40 also lies, for the relative change in the leg length of the units 6, 7 during the run.
  • the total length of the blank 6 can be changed by changing the gear ratio between the associated Runners or changed by the fact that gear wheels are exchanged as change gears.
  • a rotor 41 fixedly connected to the rotor 40 drives the rotor 14 via a rotor 42 arranged on its shaft.
  • the rotor 42 drives a rotor 43 via a rotor 43 and this with a rotor 44 via an actuating device 48 corresponding to the gear 50, which rotor is fixedly arranged on the shaft of the rotor 12.
  • the adjusting leg 48 can also be used to change the relative leg length of the unit 7, 8 during the subsequent folding.
  • the rotor 10, 41 can drive the rotor 14 or the rotor 12 via a changeover clutch 49 depending on the operating mode.
  • the runners 42, 45 are provided in separate drive planes 32, 33 which are directly adjacent to one another, so that the runners 41 are optionally in and out of engagement with the runners 42, 45 and thus also the runners 11, 14 or the actuating device by means of axial displacement 48 can be stopped.
  • a corresponding, optionally radially disengageable, coupling can also be provided between the runners 44, 45.
  • the frame 2 is essentially formed by two frame cheeks 51 lying on either side of the runners 10 to 14 and receiving the rotor bearings, each of which has two of the drive planes 32, 35 on the outer sides facing away from one another.
  • the runners 44, 45 are located in the first, the runners 42, 43 directly adjacent in the second, the runners 36, 38 on the other side of the frame in the third and the runners 39, 40 directly adjacent in the fourth drive plane.
  • the units 7 and 8 are arranged one behind the other in a lying row their last produced folded edge stacked upright, without an adjustment of the tray 17 is required for the two operating modes.
  • a transfer member 52 like a racket which projects upwards, guides the units 7, 8 in the same way in both operating modes from the circumference of the rotor 12 to the rear end of the stack row.
  • the link 52 can have a plurality of freely projecting and pivotably driven racket arms which engage in circumferential grooves of the rotor 12 and which, when the tool 29 is directed radially outward relative to the rotor 12, lift the respective unit 7, 8 from the circumference of the rotor 12 when the tool 29 is released and place on shelf 17.
  • the rotor can also have corresponding circumferential grooves.
  • the runner 12 can also cooperate with two rotatable runners, which form transfer gaps with it on its underside facing away from the runners 10, 11, 14 and have holding means of the type described. These correspondingly driven runners, which are at the same height, then alternately transfer the units 7, 8 with the help of approximately lying transfer members to the stack of heights below, in a lying arrangement. These stacks can be removed independently of one another.
  • the rotor bodies 46, 47 of the rotor arrangement 10 according to FIGS. 1 to 6 are mounted on each frame side with two bearings 53, 54 and 55, 59, essentially independently of one another, directly opposite the cheeks 51.
  • the rotor body 46 is supported directly on the cheeks 51 with two outer shafts 56 that only adjoin the ends on the outside and, like the rotor body 47 and the outer shafts 56, is penetrated by an inner shaft 57 which is independent of the cheek 51 associated with the drive plane 32, 33 the bearing 53 of the outer shaft 56 is mounted directly radially and axially with a bearing 54.
  • the bearing could also be on the other side or cheek 51 be provided, but here the shaft 57 with the bearing 59 is mounted directly on the shaft 56 in the region of the drive plane 34 or 35.
  • the rotor body 46 is axially and radially rigidly flanged or integrally formed on one end with one or both shafts 56 and rotatable with respect to the shaft 57, while the rotor body 47 is sealed on the end face and can be adjusted in a radially non-centered manner, is in engagement with the shafts 56 and is directly rotationally fixed or centered is connected to the shaft 57.
  • the rotor body 46 thus forms, with two diametrically opposed, separate subassemblies forming axial segment sections, the only rotational connection between the shafts 56, only one shaft 56 being driven directly via the rotor 37.
  • the correspondingly segmented rotor body 47 is connected in a rotationally fixed manner to a middle, enlarged section of the shaft 57 which lies between the shafts 56 and carries the runners 40, 41 at both ends.
  • the shafts 56 At their ends facing the rotor bodies 46, 47, the shafts 56 each have an annular disk-shaped control body 61, 62 formed in one piece with them, between which the rotor segments 46 are interchangeably clamped and which form part of a control device 60 for influencing the holding force of the holding means 30 as a function of the rotational position, an arbitrary setting and the axial zone of the holding means 30.
  • each control body 61, 62 On the outer end face of each control body 61, 62, a control unit 63, 64, which is fixed to the frame and / or can be set in the working direction, slidably engages with an end face, which controls the associated shaft 56 or 57 between the control body 61, 62 and the associated cheek 51 scope surrounds.
  • the control units 63, 64 can be adjusted independently of one another and are mounted on the frame 2 independently of the bearings 54 to 55.
  • Each of the two control units 63, 64 which are structurally or functionally the same or differently constructed or functionally opposed to one another like the control bodies 61, 62, have in their end faces facing the control bodies 61, 62 an annular recess which extends around the axis of rotation in the working direction and is open towards the end face , which can be sealed with radially inside and / or outside sliding seals against the end face of the control body 61, 62.
  • the ring opening is divided into a plurality of chambers 65 to 67, which are essentially pressure-tightly separated from one another and are successive and therefore ring segment-shaped, two or more of which are connected to separate fluid or control connections 68, 69 or one or more can not be provided with a control connection.
  • the arc angle over which the respective chamber 66, 67 extends can be changeable for at least one or two chambers 65 to 67 even during operation by an actuating body 70.
  • the chambers 65 to 67 are each closed by a single separating wall 71 to 73 lying between them, used separately and sliding on the associated control body 61, 62, which is considerably smaller than the chambers and is exchangeable or displaceable in the circumferential direction as a radial bulkhead.
  • the partition 72 located between the chambers 66, 67 belongs to a control body 70, which can be adjusted manually and steplessly in any position by means of a control drive with an actuator 74 which is freely accessible on the outer circumference of the actuating unit 63 between the partition walls 71, 73.
  • the chambers 66, 67 therefore always have the same extension together in the working direction, since an enlargement of the chamber 66 increases a reduction in the size of the chamber 67, which can also be rendered completely ineffective when the partition walls 72, 73 are in mutual contact.
  • the respective control body 61, 62 is provided with the same and unequal connecting channels 75, which are uniformly and unevenly distributed around its axis in the working direction and which have outlet or connection openings 76 for the chambers 65 to 67 on its outer end face and on it inner end face forms inlet or connection openings 77 for the ends of main channels 78, 79 of the rotor body 46, 47.
  • Openings 77 can be offset radially outward relative to associated openings 76, and openings 76, 77 can be both circular and approximately square or elongated in the radial direction.
  • Each runner segment 46, 47 which can be enlarged or reduced in the working direction by adding or removing at least one additional segment 58 rigidly connected to it, has channels 78, 79 as main lines, which are approximately in the width direction of the runner 10 and approximately are arranged axially parallel to this at two or more different distances from the peripheral surface or in corresponding rings around the axis of rotation.
  • two or more main channels 78, 79 each extend only over an approximately equal part of the working width, main channels 78, 79 being aligned with one another by being closely adjacent blind bores reaching to one another can be formed or can be separated from one another in a pressure-tight manner by a separating body which can be adjusted to change the length of the respective channel 78, 79.
  • each rotor segment 46, 47, 58 forms a receiving surface 82, 83 for the material 5, 6 and in the region of this receiving surface a holding zone 80, 81 for pressing the material regardless of its weight.
  • the respective holding zone 80, 81 is formed by a plurality of suction openings 85 penetrating the receiving surface 82, 83 in the finest grid, which can contain openings 85, for example, in each case at least two or three axial rows which follow one another in the circumferential direction and are uniformly axially offset from one another.
  • each channel 78, 79 has several branch channels 84 which are angularly offset about its central axis and which penetrate the receiving surfaces 82, 83 with their outer ends and thereby each form a suction opening 85.
  • the arc angle, over which the suction openings 85 of the respective channel 78, 79 extend around the axis of rotation, is substantially smaller than that of the chambers 65 to 67 and is only approximately at least or at most 10 °, so that a very fine control of the position-specific holding forces or the expansion of the holding zone is possible.
  • Suction openings or holding zones can also be provided in the area of the tools, in particular the knives 22, approximately up to their cutting edges, so that suction openings can penetrate their breast surface belonging to the circumference of the rotor.
  • at least one flank surface 86 of the respective rotor segment 46, 47, 58 lying approximately in an axial plane of the rotor 10 can be penetrated by a channel 78, 79, 84 which is limited only over a partial circumference, the remaining partial circumference of which is then through the corresponding partial channel of an additional segment 58 is to be closed, so that suction openings 85 not only extend to this flank, but are provided in the separating gap between such rotor segments.
  • no holding zones are provided here in a small circumferential area, since the tools 23 serve to lift the material 5, 6 from the receiving surface 82, 83.
  • the tools 22, 23 each lie in the working direction on or close to the front end of the associated rotor segment 46, 47, which can be free of suction openings in front of the tool 22, 23 in the working direction.
  • suction openings 85 extend to the respective rear end of the segment body 46, 47 and to both flank ends of the segment 58.
  • the end of each channel 78, 79 lying in the associated end face of the segment body 46, 47 forms a connection opening 87 for the associated opening 77, wherein the openings 87 of the rotor body 46 can be congruent with the openings 77, while the openings 87 of the rotor body 47 can, depending on the setting, be connected to one or two adjacent openings 77 by covering them.
  • a separate opening 77 is provided for each opening 87 or for each opening ring of the rotor body 46, while the openings 77 are provided jointly for both opening rings 87 of the rotor body 47, so that in each case two radially offset openings 87 with the same opening 77 and / or with separate openings 77 can be connected. Since the suction openings associated with the channels 78, 79 each only extend over part of the working width of the receiving surfaces 82, 83 and a separate control unit 63, 64 is provided for each of these parts, separate, directly adjoining and / or spaced-apart holding zones, in which differently high holding forces can be brought about.
  • FIGS. 4 and 6 the stations 15, 16, 18 are indicated with arrows.
  • the associated holding zone 80, 81 is connected to the chamber 65 and thus its maximum holding force is effected via the connection 68.
  • This holding force is maintained until the holding zone has reached the station 16, in which the holding force is released by the separating body 71 or the area free of holding points 85 in the tool 23, so that the rotor 12 cuts the blank 6, for example with the holding means 29, on the pre-fold or not, regardless of whether the blank 6 has already been separated from the web 5 in the station 15 or not.
  • the material 5, 6 is secured on both sides immediately adjacent to the separation point by the holding zones 80, 81.
  • the leg of the blank 6 trailing the pre-fold is secured during the transfer in the station 16 until it is reached with the holding force mentioned, while the leading leg is secured with a lower holding force, because the holding zones 80, 81 securing it now with the chamber 66 communicate, so that in the working direction after station 6 there is an abrupt drop in the holding force to a lower level.
  • the leading material leg can therefore go against the working direction of the rotor 10 from the receiving surface 83 are withdrawn and placed on the trailing leg, which is passed essentially rolling across from the receiving surface 82 to the corresponding peripheral receiving surface of the rotor 12.
  • the holding force before, in or after the station 18 is suddenly reduced or canceled, so that the blank 6 can then be transferred to the receiving surface of the rotor 14 in a corresponding manner.
  • the separating body 72 then acts like the separating body 71. By adjusting this separating body 72, the position can be selected in relation to the station 18 up to which point the holding forces act or from when they are significantly reduced at least for the preceding material leg or in the area of the chamber 67 are canceled.
  • the chamber 66 with the effects mentioned can also connect directly to the chamber 65 in the working direction via the then two-part separating body 72, 73, so that positive holding forces are given approximately over the entire rotational path.
  • the holding regions 65 to 67 mentioned can be set independently of one another over the working width by the control units 63, 64.
  • the surface areas of the holding zones in the working direction and in the direction of the working width can be adjusted both with the control units 63, 64 and by removing or adding differently sized additional segments 58 to the flank of the segment bodies 46 pointing in the opposite direction from the tool 22 or 23, 47 can be changed. This also makes it possible to change the positions of the holding zones 80, 81 relative to the rotor body 46, 47.
  • FIGS. 1 to 16 the same reference numerals are used for corresponding parts, but in FIGS. 7 and 8 with the index "a” or in Figures 9 to 16 with the index "b", which is why all parts of the description apply mutatis mutandis to all embodiments.
  • two active holding zones 80, 81 which act simultaneously on the same unit 6 on both sides of the tool 23, extend about the axis of rotation over an arc angle of more than 45 to 160 °, so that each end of the unit 6 against the receiving surface 82, 83 is tightened or positive holding forces which are essentially evenly distributed between these ends are effective.
  • the arc angle of the holding zone 80 can be approximately the same size as that of the holding zone 81, and between interacting holding zones 80, 81, a zone extending on both sides of the tool 23 and essentially free of positive holding forces can be provided, the arc angle of which is smaller than that of the individual holding zone 80, 81 is.
  • the arc angle of the respective holding zone 80a of the rotor 11 is also greater than 40 or 60 °, it being possible for at least four to eight or twelve transverse rows of suction openings 85a to be provided one behind the other in the working direction, which have essentially the same distances from one another.
  • the arc angle of the receiving surface 83a which is free of positive holding forces, is larger at least 90 to 110 °, with this receiving surfaces 83a, in relation to the working direction, extending several times further behind the tool 26 than before, namely at least four times further.
  • 83a lies within the rotor body 46a or in the axis of rotation a sleeve-shaped adjusting body 70a of the control device 60a, which has a longitudinal slot as a connecting channel 75a for each partial half of the working width.
  • This longitudinal slot forms the connection opening 76a on the inner circumference and the connection opening 77a on the outer circumference, to which the directly adjoin the radially inner ends of the branch channels 84a.
  • the slot width of the axial slot 75a is chosen to be so small that a holding zone of less than 15 or 10 ° or approximately 5 ° arc angle is effective on the receiving surface 82a, but in this suction openings 85a are also provided one behind the other in the working direction, for example four adjacent transverse rows assigned. All other branch channels 84a are closed by the circumference of the actuating body 70a.
  • connection opening 77a can be adjusted with the actuating body 70a over the entire area of the associated branch channels 84a, so that the positively effective holding zone can be adjusted as desired in and against the working direction with respect to the rotor body 46a, depending on the extent of the extension of the tool 26 Leg of unit 7 is.
  • This adjustment is possible with the rotor 43 during working operation, the adjusting body 70a rotating synchronously with the rotor body 46a after the adjustment.
  • an end of the actuating body 70a protruding from the rotor body 46a forms a control sleeve 61a which is fixedly connected to the rotor 43.
  • this end together with the other end, forms an inner shaft 57a which is supported with its outer circumference via the bearings 54a, 59a on the inner circumference of the outer shaft 56a of the rotor body 46a.
  • This outer shaft 56a is in turn mounted approximately in the plane of the bearings 54a, 59a with the bearings 53a, 55a on the cheeks 51 and is connected in a rotationally fixed manner to the rotor 44.
  • the adjusting device 48 is used for mutual adjustment of the two runners 43, 44.
  • a tubular actuating unit 63a in the axis of rotation, the jacket of which is provided with through openings 65a, 66a, which extend over an arc angle which corresponds approximately to that between stations 19, 20 or is larger in comparison.
  • this results in a rotary slide valve control such that when the unit 7 arrives at the station 19, the foremost, folded end of this unit 7 is grasped by the associated area of the holding zone 80a and sucked in via the small arc angle mentioned, in This state is carried along in the working direction and is then released from the holding forces in the area of the station 20 by closing the line connections between the connecting channel 75a and the control opening 65a. This line connection is only opened again when station 19 is reached.
  • the two ends of the actuating unit 63a serve as connections 68a, 69a for a suction source, the connecting channel 75a, like the control openings 65a, 66a, each being divided by a partition wall 72a and 71a or being able to form separate sections, so that in the associated parts of the Working width differently high surface-specific holding forces can be effected.
  • the actuating unit 63a can be steplessly adjusted with respect to the position of the control opening 65a, 66a about the axis of rotation relative to the frame 2, even during work, as an aperture.
  • the extension of its aperture 65a in the working direction e.g. by changing the control body 63a, can be changed in a simple manner.
  • the receiving surfaces 82a, 83a having the holding zones 80a and the folding strips 26 do not need to be mutually adjustable here, so that these receiving surfaces can be formed in one piece.
  • control bodies 61b, 62b are formed in one piece with one another, with the outer shafts 56b and with the entire jacket of the rotor body 46b, which forms an annular disk-shaped central flange 88 in the middle or between the individual widths of the total working width.
  • the diametrically opposed rotor segments 89 of the rotor body 46b form a receiving pocket for a rotor segment 90 of the rotor body 47b between their mutually facing flanks and between a respective end flange 61b or 62b and the central flange 88, so that for each rotor segment 90 of the rotor body 47b, Working width at least one separate rotor segment 90 is provided.
  • the runner segment 90 has end walls 91 which, with their outer surfaces facing away from one another, slide in a sealed manner on the mutually facing inner surfaces of the associated flanges 61b, 88 and between them delimit a single main channel 78b or 79b, which is approximately from the rear of the receptacle for the tool 23b extends to the rear flank of the rotor segment 90.
  • the end wall 91 sliding on the control disk 61b or 62b is penetrated by the connection opening 87b and connected to at least one of the connecting channels 75b.
  • the main channels 78b, 79b of the rotor segments 89, 90 are over their entire length or up to the associated flanges 61b, 88, 62b or up to the end walls 91 and therefore over the associated working width over their full inside width on the outer circumference of the rotor segment 89 or 90 open, since they are designed in the manner of pocket or groove-shaped depressions, which decrease in width to the groove base.
  • the rotor segment 89 forms a plurality of such adjacent pockets 78b, 79b, which are each separated from one another by a longitudinal web lying in an axial plane and thinner than the pocket width.
  • Each of these Main channels 78b, 79b are connected in the area of the groove base to at least one narrower connecting channel 75b of the associated control disk.
  • Another main channel lies radially inside the tool 22b, its corresponding groove opening being in the associated flank of the rotor segment 89 and being closed at the groove opening by a plate-shaped closure member 92 recessed in the flank.
  • Branch channels 84b extend from this main channel, which pass through the tool 22b and form suction openings on its outer surface associated with the receiving surface.
  • rotor segments 90 required for a rotor 10b can be produced in the manner of a cast cluster from a single blank 93 according to FIG. 13, in which all segments 90 lie together between two end planes at mutual distances and are evenly distributed around the blank axis.
  • the end walls 91 initially go through the distances in the blank 93, but are separated as segment-shaped separating parts 94 between mutually facing flanks of adjacent segments 90, as a result of which the rotor segments 90 are separated and then mounted in the rotor body 46b or screwed interchangeably against the shaft 57b can.
  • the end faces facing away from one another, the circumferential faces as well as the connecting faces for the shaft 57b and the tool holders of all segments 90 can be machined together and very precisely.
  • the openings 87b are only molded without machining.
  • control bodies 61b, 62b are provided adjacent to the groove base of the chambers 78b, 79b around the rotor axis with annular recesses which extend to the inner end face of the respectively associated body 61b, 62b and only through the flank webs between the pockets 78b, 79b in the plane the associated inner end face are interrupted. 14 are inserted in these ring openings in a fixed manner, which abut against the end edges of the flank webs and form the connecting channels 75b.
  • two or more control inserts 95 can form a jointly braced package with congruent connecting channels 75b and can therefore be made so thin that their connecting channels 75b can be produced very precisely by processing with a laser beam.
  • the outermost insert 95 thus forms the connection 76b and the innermost insert 95 the connection 77b.
  • the receiving surfaces 82b, 83b or their holding zones 80b, 81b are formed by shell or cover bodies 96 to 99, which in FIGS. 10 and 11 are also somewhat radially outward from the circumference of the rotor bodies 46b, 47b in FIGS. 10 and 11 are shown lifted off and essentially form the entire working surface between tools 22b, 23b which follow one another in the working direction.
  • Separate deck segments 96 to 99 are provided for axially adjacent individual working widths, which can each be of identical design in pairs. This also applies to the tools 22b, 23b.
  • Two cover segments 96, 97 are fastened to each rotor segment 89 on both sides of the tool 22b.
  • the cover segment 96 connects flush and immediately adjacent to the branch channels 84b to the rear of the tool 22b and covers all of the associated main channels 78b, 79b of the associated rotor segment 89, over whose rear flank it can still protrude slightly.
  • the cover segment 96 is fastened in the axial direction along the tool 22b and on both side edges to the rear end of the segment 89 so that it can be exchanged with screws on the circumference of this segment 89, namely directly against the circumferential surfaces the flanges 61b, 62b, 88 braced.
  • the same also applies to the cover segment 97, which immediately adjoins the receiving recess in front of the tool 22b and projects with the largest part of its circumferential extent over the front flank of the segment 89.
  • cover segments 98, 99 also adjoin the receiving recess for the tool 23b or this tool itself, but these are only fixed or braced relative to the associated rotor segment 90 and in such a way radially inward by the thickness of the cover segments 96, 97 Staggered envelope surface that their outer surfaces on the inner surfaces of the cover segments 96, 97 and their inner surfaces laterally within the segments 96, 97 on the peripheral surfaces of the flanges 61b, 62b, 88 can lie or slide flat.
  • the front cover segment 98 like the cover segment 97, projects over part of the circumferential extent of the adjacent rotor segment 89 over the front flank of the associated segment 90, while the rear cover segment 99 projects only slightly beyond the rear flank surface.
  • the flanges 61b, 62b, 88 do not protrude beyond the receiving surfaces.
  • a segment gap 58b is formed between adjacent rotor segments 89, 90 or between their mutually facing flanks.
  • the gap 58b lying in front of the tool 22b and behind the tool 23b is completely covered by the cover segment 97 in each setting position and slightly covered by the cover segment 99.
  • the gap 58b lying in front of the tool 23b and behind the tool 22b is likewise completely covered by the cover segment 98 in each setting position and slightly covered by the cover segment 96.
  • the lower deck segments 98, 99 are slightly narrower than the deck segments 96, 97, so that they can slide along between their laterally outer fastening screws.
  • the deck segment 98 is only at its rear end on the runner segment 90 attached and protrudes freely from this attachment, but is guided through the deck segment 96.
  • the gaps mentioned form essentially closed chambers 58b which are connected to the control device 60b in the manner described, so that holding zones can also be formed in their area.
  • Branch channels 84b can also extend from the respective chamber 58b within the adjacent rotor segment, which channels immediately in front of the associated tool, e.g. the tool 23b, and continue through the associated deck segment 98, so that suction openings 85b are also formed in this area.
  • the design of the control insert 95 means that the chambers 58b or the branch channels 84b mentioned are always connected to the control device 60b independently of their width setting.
  • Seals 100 for example labyrinth seals, are provided so that the respective chamber 58b is sealed off from the outer circumference of the shaft 57b despite the relatively wide inner circumference of the rotor segments 89.
  • sheet metal or the like standing radially or approximately in axial planes or the like can be attached to the two flanks of the rotor segment 89, the radially inner edges of which run directly adjacent to the outer circumference of the shaft 57b.
  • a corresponding transverse seal can also be provided between adjacent rotor segments 90 in the region of the flange 88, so that axially adjacent chambers 58b can be separately pressure-controlled.
  • the separating or sealing plates can simultaneously form stops for mutual abutment of adjacent rotor segments 89, 90, so that the chambers 58b are never completely closed, but instead form a gap of about 1 mm gap thickness with the smallest width. So you can run almost continuously across the entire Circumference of the rotor 10b holding zones are formed, regardless of the mutual adjustment of the rotor body 46b, 47b.
  • the flow openings 85b provided in the perforated grid in the cover segments 96 to 99 are designed or arranged such that in each overlap position between the cover segments 96, 98 or 97, 99 covered openings 85b of the cover segment 98, 99 are partially or completely covered with openings 85b of the covering deck segment 96 or. 97 and thus form connecting channels for the latter.
  • the openings 85b of the deck segments 98, 99 are elongated or elongated, parallel to the working direction, and are distributed approximately over the same width of the holding zone as the openings of the deck segments 96, 97.
  • the deck segment 98 has through openings directly adjacent to the associated tool 23b, which are in register with the branch channels 84b located in front of this tool 23b and are therefore controlled via this and the associated chamber 58b.
  • the deck segment 96 has suction openings in longitudinal rows immediately behind the tool 22b, which run obliquely on both sides of the longitudinal center plane of the associated individual working width in such a way that they move outward from this longitudinal center plane.
  • This opening arrangement extends only over an area in which the cover element 96 according to FIG. 10 cannot be overlapped by the cover element 98, so that the opening arrangement serving to spread the material is always effective.
  • the material is subjected to an outward stretching force from the center of its width on both sides and is thus prevented from forming folds regardless of the mutual adjustment of the rotor bodies 46b, 47b.
  • the mutual adjustment between the rotor bodies 46b, 47b about the rotor axis can be more than 30 ° or 40 ° and also 45 °.
  • FIG. 9 shows only one of the actuating units 63b of the control device 60b and the other is to be arranged correspondingly mirror-symmetrically on the other end face of the rotor body 46b according to FIG. 3.
  • the three bulkheads or partitions 71b, 72b, 73b are formed in one piece with the control housing or the boundaries of its annular groove, and a movable adjusting body 70b is arranged in each of the chambers 65b, 67b as a further radial bulkhead.
  • the connection 68b opens directly on both sides of the partition 73b into both chambers 65b, 67b, but into the chamber 65b with a larger passage cross section.
  • the two outlet passage cross sections in the chambers 65b, 67b can, however, be changed independently of one another, as can their extension in the working or circumferential direction and thus the corresponding extensions of the effective holding zones 81b, 80b on both sides of the effective range of the station 15b.
  • the chamber 67b can be almost closed for this area or opened up to the partition 72b.
  • the chamber 65b can also be essentially completely closed or opened almost up to the partition 71b. If the two actuating bodies 70b are adjustable with a common actuator, a reduction or enlargement of the chamber 65b accordingly leads to an enlargement or reduction of the chamber 67b.
  • the arrangement is expediently provided such that that when the web 5 is bead-shaped in the area of the station 15b by the folding knife 23b, the trailing part of the material is briefly subjected to a lower absorbing holding force via the chamber 67b, so that it is well drawn against the associated receiving surface or holding zone 81b during this shaping can. As soon as this tightening ends, the holding force is increased again. This can take place, for example, through the passage cross sections of the connecting channels 75b, which can be seen in FIG. 14 and whose individual openings or individual channels which are adjacent in the circumferential direction are correspondingly graduated in their circumference. This prevents the web 5 or the blank 6 from being pulled obliquely before and during the immediately subsequent cut with the tool 22b.
  • the runners according to the invention can also be retrofitted into existing folding devices or exchanged for runners there, so that a corresponding retrofitting is possible.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Respiratory Apparatuses And Protective Means (AREA)
EP96102517A 1995-03-03 1996-02-20 Cylindre pour appareil de pliage ainsi qu'un appareil de pliage Expired - Lifetime EP0729910B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19507351 1995-03-03
DE19507351A DE19507351A1 (de) 1994-03-05 1995-03-03 Läufer für eine Falteinrichtung sowie Falteinrichtung

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EP0729910A2 true EP0729910A2 (fr) 1996-09-04
EP0729910A3 EP0729910A3 (fr) 1997-06-11
EP0729910B1 EP0729910B1 (fr) 2002-07-10

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ES (1) ES2179127T3 (fr)

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FR2800722A1 (fr) * 1999-11-08 2001-05-11 Heidelberger Druckmasch Ag Systeme de maintien d'exemplaires de produits imprimes sur des cylindres guides-exemplaires, ainsi que cylindre et plieuse utilisant un tel systeme
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WO2001087601A3 (fr) * 2000-05-17 2002-06-20 Koenig & Bauer Ag Appareil de pliage
EP1457330A2 (fr) * 2000-05-17 2004-09-15 Koenig & Bauer Aktiengesellschaft L'entraínement indépendent de deuxième cylindre à lames de pliage
US6902519B2 (en) 2000-05-17 2005-06-07 Koenig & Bauer Aktiengesellschaft Folding device
EP1457330A3 (fr) * 2000-05-17 2007-06-13 Koenig & Bauer Aktiengesellschaft L'entraînement indépendent de deuxième cylindre à lames de pliage

Also Published As

Publication number Publication date
EP0729910A3 (fr) 1997-06-11
ES2179127T3 (es) 2003-01-16
EP0729910B1 (fr) 2002-07-10
US6024685A (en) 2000-02-15

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