EP1362819B1 - Plieuse dans une machine rotative d'impression - Google Patents

Plieuse dans une machine rotative d'impression Download PDF

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Publication number
EP1362819B1
EP1362819B1 EP03008025A EP03008025A EP1362819B1 EP 1362819 B1 EP1362819 B1 EP 1362819B1 EP 03008025 A EP03008025 A EP 03008025A EP 03008025 A EP03008025 A EP 03008025A EP 1362819 B1 EP1362819 B1 EP 1362819B1
Authority
EP
European Patent Office
Prior art keywords
cylinder
cutting
recited
folding apparatus
shaped conveying
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03008025A
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German (de)
English (en)
Other versions
EP1362819A3 (fr
EP1362819A2 (fr
Inventor
Alain Blanchard
Jean-Francois Robert
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.)
Goss International Montataire SA
Original Assignee
Goss International Montataire SA
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
Application filed by Goss International Montataire SA filed Critical Goss International Montataire SA
Publication of EP1362819A2 publication Critical patent/EP1362819A2/fr
Publication of EP1362819A3 publication Critical patent/EP1362819A3/fr
Application granted granted Critical
Publication of EP1362819B1 publication Critical patent/EP1362819B1/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
    • B65H45/28—Folding in combination with cutting

Definitions

  • the invention relates to a folding apparatus in a web-fed rotary printing press according to the preamble of claim 1.
  • the webs of material to be printed are removed from a paper roll and fed to a folding apparatus after printing in one or more printing units, in which the webs are cut by a cutting device into individual signatures and subsequently folded in the transverse direction by means of a folding blade arranged on a folding blade cylinder ,
  • the signatures are in this case performed in a corresponding manner by a plurality of further conveyor belts, which are passed through the other intermediate spaces in the second cutting blade, wherein the folding blade as Support element or anvil element for the second cutting blade is used.
  • the document DE19949223 discloses a device for cutting a moving web of material, wherein the device comprises a cutter disposed on a cutting cylinder and a cooperating with these rotary anvil cylinder, wherein a conveyor belt between the cutting cylinder and the anvil element is guided and acts in the cutting operation of the signatures as a counter element for the cutting blade.
  • a folding apparatus for folding signatures which are separated by a cutting device from a current printing material web printed in a web-fed rotary printing machine, comprises a cylinder, in particular folding blade cylinder or transfer cylinder or collecting cylinder, on the peripheral surface thereof - hereinafter referred to as signature transport surface - the signatures Help be promoted by at least one revolving band-shaped transport element.
  • the cutting device has, in accordance with the invention, a cutting blade arranged on the folding blade cylinder, which cooperates with a rotating or circumferential anvil element, preferably in the form of a cutting blade cylinder.
  • the revolving band-shaped transport element is guided around the rotating anvil element in such a way that the former acts as a support element or counter-pressure element for the cutting blade during the cutting operation of the signatures.
  • the circulating band-shaped transport element can in this case e.g. be guided around the rotating anvil element directly adjacent to the peripheral surface of the rotating anvil element.
  • the circulating band-shaped transport element is guided wholly or partly around the periphery of the anvil element and additionally via deflecting rollers.
  • the pulleys are mounted so that - with respect to the center of the folding blade - the revolving band-shaped transport element over an angular range of about 5 ° to 40 ° before the point of interaction of the cutting blade and anvil element is guided fitting the circumference of the folding blade, and the printing material web between the peripheral surface of the folding blade and the transport element over this area is held so to speak sandwich before the cutting process. This results in a strong reduction of caused by the cutting process web vibrations.
  • the invention provides the advantage that the signatures are securely guided even at very high speeds, without the leading corners of the signatures after the cutting process as a result of the resulting wind in a disadvantageous way turn and lead to a paper jam or even damage to the folder. Furthermore, the device according to the invention has the advantage that the cutting edges of the signatures by the use of a cutting device with a over the entire width of the printing material extending cutting blade are inherently straight and smooth, and not - as in the devices of the prior art in which a first and a second partial section are performed sequentially - have stages that arise, for example, the fact that the signatures are not precisely guided by the conveyor belts, for example due to vibrations.
  • the band-shaped transport element is formed as a belt, which is preferably guided in a groove formed on the rotating anvil element, wherein the depth of the groove is slightly smaller than the thickness of the belt.
  • the invention will be described below for simplicity using the example of a single belt.
  • the belt is designed as a toothed belt which, in the regions in which the cutting blade interacts with it during the cutting process, has reinforced sections or inserts, e.g. made of metal or Kevlar, on which the cutting blade is pressed during the cutting process to cut the web therebetween.
  • the reinforced portions are preferably each arranged at a distance from one another, which corresponds to the respective section length of the signature, and which increases in the case of a slip between the toothed belt and the peripheral surface of the folding blade by a value corresponding to the width of the resulting gap, the in the course of the rotation of the folding cylinder by the slip between the leading edge of the printing substrate, or a subsequent signature and the trailing edge of a leading signature results.
  • the reinforced portions are provided in the preferred embodiment of the invention advantageously each with a cutting groove into which the associated cutting blade of the cutting blade cylinder dips during the cutting process.
  • the toothed belt is further guided with its toothed side about the rotating, preferably designed as a cylinder anvil element and with its flat back around the folding blade, the drive of the toothed belt is preferably carried out by a formed on the rotating anvil element toothing on the anvil element, in which the toothed side the toothed belt engages.
  • the toothed belt or generally the circulating transport element, is moved with a reduced speed with respect to the signature transport surface of the folding blade cylinder.
  • the speed is in this case such that between the cutting blade and the leading edge of the printing material after the cutting process with progressive rotation of the folding blade cylinder, a gap caused by the slip between the signature transport surface of the folding blade and at a slower speed through the timing belt or the circulating transport element moved separated signature results.
  • leading edge gripping device which engages through the gap, the leading edge of the printing material.
  • the leading edge gripping device may in this case be a known gripper device, which the front edge or the leading edge of the printing material in an advantageous manner against an inwardly extending gripper support surface presses and clamps.
  • the closing of the gripper takes place here preferably simultaneously or a very short time after the separation of the signature from the printing substrate by the cutting device.
  • the signature is brought immediately after the closing of the gripper device to the peripheral speed of the folding blade and held in the subsequent known folding in a known manner by the gripper device when the folding blade abuts the signature in the associated jaws of a downstream jaw cylinder.
  • the ratio of the speeds of the transport surface of the folding blade and the speed of the circulating band-shaped transport element in the preferred embodiment of the invention corresponds to the quotient of two natural numbers to ensure that the cutting elements on the folding blade cylinder after a complete rotation of the same again coincide with a reinforced portion of the toothed belt.
  • the same applies to the respective length of the transport surface or peripheral surface of the folding blade to the length of the circulating transport element.
  • the number n associated with the length of the transport surface may, for example, be in the range between 1 and 5 length units and is preferably 3 length units
  • the number m assigned to the length of the circulating transport element is, for example, in the range between 1 and 3 length units, preferably at 1 unit length. If we are talking about units of length, this means in particular the length of the maximum processable signature format.
  • the numbers, as well as the length units can also have other values.
  • the cutting element may, for example, be arranged fixedly on the folding blade cylinder and be protected by a protective and clamping device made of rubber-elastic material, for example of polyurethane, provided on both sides of the cutting element and projecting radially beyond the tip of the cutting element.
  • a protective and clamping device made of rubber-elastic material, for example of polyurethane, provided on both sides of the cutting element and projecting radially beyond the tip of the cutting element.
  • the cutting element or cutting blade is not fixedly arranged on the folding blade, but moved back in its periphery. This can be done, for example, by a used to drive the folding blade in a known manner control cam and a cam follower, wherein the control cam is arranged fixed to the frame, and the cam follower is coupled to the cutting element, so that it is actuated by the rotation of the folding blade.
  • the circulating band-shaped transport element in the direction of rotation of the folding blade is considered another circulating belt-shaped transport element downstream, which advantageously when using a movable back into the periphery of the folding blade cutting element by a conventional, known by folders ago conveyor belt, or a Variety of known in a parallel manner at a distance from each other extending conveyor belts is formed.
  • the further circulating transport element can be designed very cost-effectively as a standard component used for a long time in folding apparatus, whereas in this embodiment of the invention the transport element guided around the anvil element is cut through a smooth-walled endless belt over the entire length of cut-resistant material , For example, made of Kevlar or metal or other cut-resistant, but elastic material which is relatively expensive to manufacture.
  • cut-resistant material For example, made of Kevlar or metal or other cut-resistant, but elastic material which is relatively expensive to manufacture.
  • Another advantage that results from this is to see that the length of the first circumferential smooth-walled belt formed from cut-resistant material can be selected comparatively short, whereas the other, formed by a conventional conveyor belt or a plurality of conventional conveyor belts circulating transport element may have a comparatively long length, without the costs thereby in be enlarged accordingly.
  • the choice of a comparatively short circumferential transport element made of cut-resistant material also has the advantage that it can rotate at a variable lower speed or at a higher speed than the circumferential surface of the folding blade cylinder in order to reduce the size of the gap between the cutting device, or the gap formed by the speed difference To increase or decrease the trailing edge of a leading signature and the leading edge of the substrate web at will.
  • the entire circumferential surface of the anvil member is advantageously formed as a cylindrical surface provided with corresponding grooves for the circumferential or cut-resistant belts, which with an advantageously also rubber-elastic material, such.
  • polyurethane coated which serves over the entire peripheral surface of the anvil member away as a cutting surface, which cooperates with the cutting element in the areas where the cut-resistant belt of the peripheral edge-shaped transport element do not run.
  • a folding device 1 for folding signatures 2, which are separated by a cutting device 4 from a moving printing material web 6, comprises a folding blade cylinder 8, which has a signature transporting surface 10 on which the signatures 2 are based are guided by a circumferential band-shaped transport element 12.
  • the cutting device 4 hereby comprises a folding blade 14 arranged on the folding blade cylinder 8, and a cooperating with this rotating anvil element 16, preferably in the form of a cylinder shown in Fig. 1, around which the band-shaped transport element is guided in such a way that the band-shaped transport element during the cutting process of the signatures 2 acts as a counter-pressure element or support element for the cutting blade 14, which in turn is supported at the corresponding point of the rotating anvil element 16.
  • the support on the rotating anvil element 16 can in this case be effected, for example, by a groove strip or a cutting rubber 18 received on the anvil element, as shown in FIG. 4.
  • At least one groove 20 is formed in the rotating anvil element 16, in which the circulating band-shaped transport element 12 is guided, wherein the depth of the groove 20 is slightly smaller than the thickness of the band-shaped transport element 12. If, according to the preferred embodiment of the invention, a plurality of parallel adjacent belt-shaped transport elements 12 are used, a corresponding number of grooves 20 are arranged at the corresponding distance from each other across the width of the rotating anvil element 16.
  • the circulating transport element can be formed according to the embodiment of Fig. 2a, 2b and 4 by a toothed belt 22, which is guided with its toothed side around the rotating anvil element 16 and with its flat side around the folding blade 8, and via a toothing 24th is driven in the peripheral surface of the rotating anvil member 16.
  • the toothed belt 22 is provided with reinforced portions or inserts 26 having a cutting groove 27 into which the cutting blade 14 is inserted during the cutting operation.
  • the reinforced portions 26 are arranged at a distance D to each other, which substantially corresponds to the length of the signatures 2 plus the width B of a gap 28 formed between the leading edge 30 of the printing substrate 6 and the cutting blade 14 of the cutting device 4, that the folding blade cylinder 8 moves at a higher peripheral speed than the toothed belt 22.
  • a leading edge gripper 32 is actuated, which passes through the gap 28 and the leading edge 30 of the printing substrate 6, or just emerging or a very short time previously incurred signature 2 takes.
  • the held at the front edge 30 by the leading edge gripper 32 signature is then pushed in a known manner by a folding blade, not shown, in also not shown jaws of a downstream jaw cylinder.
  • the speeds of folding blade cylinder 8 and belt-shaped transport element 12, or toothed belt 22 are in this case for example selected so that z. B. after a quarter-turn of the cylinder 8, a gap 28 with a size between z. B. 1 cm and 5 cm is formed.
  • another band-shaped transport element 36 provided with engagement openings 34 may be used, which may be formed, for example, as a metal band or Kevlar band with a cutting groove 27 preferably formed therein, and which does not have corresponding ones shown pin-shaped engaging elements on the rotating anvil element 16 is driven, which engage in the engagement forms 34.
  • the band-shaped circulating transport element is designed as a made of cut resistant material, preferably smooth-walled belt 38, which is followed by another circulating belt-shaped transport element 40 in the direction of rotation of the folding blade 8.
  • the belt 38 is in this case guided around the rotating anvil element 16 via guide rollers, which are not designated in more detail, with respect to the center of rotation of the folding blade cylinder 8, the circulating belt-shaped transport element 38 over an angular range of about 40 ° before the point of interaction of cutting blade 14 and anvil element 18 on the circumference of the folding blade 8 is guided fitting, and the printing material 6 between the peripheral surface of the folding blade 8th and the transport element 38 is held over this area before the cutting operation.
  • the imaginary tangential inlet direction of the web is indicated in dashed lines.
  • the belt 38 in this case runs in the same way as the other circulating transport element 40 preferably with respect to the speed of the signature transport surface 10 of the folding blade 8 reduced speed, thereby in the same manner as in the embodiment of Fig. 2a and 2b, a gap 28 between the leading edge 30 of the material web 6 and the cutting blade 14 is formed, through which a leading edge gripper 32, the leading edge 30 upon further rotation of the cylinder 8 as shown in FIGS. 8a and 8b takes and thereby the signature 2 after the cutting process with the speed of Signature transport surface 10 of the cylinder leads.
  • toothed belt 22 and the belt 38 is made of cut-resistant material in an associated groove 20 which is formed on the circumference of the rotating anvil member 16.
  • Fig. 9 shows a preferred embodiment of the cutting blade 14, which is laterally provided with a protective and clamping device 42 which consists of rubber-elastic material, for example polyurethane.
  • the protective and clamping device 42 serves as a protection against injury by the cutting blade 14, which preferably fixed to the periphery of the folding blade 8th is attached, and on the other hand ensures that the leading emerging cut edge of the web 6 is urged during the cutting process against the rotating anvil element 16 and against acting as a counter-pressure element or support element circulating band-shaped transport element 12.

Landscapes

  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Inking, Control Or Cleaning Of Printing Machines (AREA)

Claims (16)

  1. Plieuse (1) dans une machine rotative d'impression destinée à plier des signatures (2) qui sont détachées d'une bande de matériau à imprimer (6) circulant par un dispositif de coupe (4), et qui sont transportées autour du cylindre sur une surface de transport de signature (10) d'un cylindre, en particulier d'un cylindre à plioir (8), à l'aide d'au moins un élément de transport (12, 22, 36, 38) circulant, en forme de bande,
    caractérisée en ce
    que le dispositif de coupe (4) comporte une lame de coupe (14) disposée sur le cylindre (8) ainsi qu'un élément d'enclume (16) rotatif coopérant avec ladite lame de coupe, l'élément de transport circulant en forme de bande (12, 22, 36, 38) étant guidé autour de l'élément d'enclume (16) rotatif, et agissant comme élément de contre-pression pour la lame de coupe (14) lors du processus de découpe des signatures (2).
  2. Plieuse selon la revendication 1,
    caractérisée en ce
    que l'élément de transport en forme de bande (12, 22, 34, 38) est conçu comme une courroie qui est guidée dans une rainure (20) formée sur l'élément d'enclume (16) rotatif, la profondeur de la rainure (20) étant légèrement inférieure à l'épaisseur de l'élément de transport en forme de bande.
  3. Plieuse selon la revendication 2,
    caractérisée en ce
    que la courroie est conçue comme courroie dentée (22) qui, dans les zones dans lesquelles la lame de coupe (14) coopère avec celle-ci lors du processus de découpe, est pourvue de sections renforcées (26).
  4. Plieuse selon la revendication 3,
    caractérisé en ce
    que chacune des sections (26) renforcées est pourvue d'une rainure de coupe (27) pour recevoir la lame de coupe (14) lors du processus de découpe.
  5. Plieuse selon la revendication 3 ou 4,
    caractérisée en ce
    que la courroie dentée (22) est guidée avec sa face dentée autour de l'élément d'enclume (16) rotatif et avec sa face plane autour du cylindre (8).
  6. Plieuse selon l'une quelconque des revendications précédentes,
    caractérisée en ce
    que l'élément de coupe (14) est disposé de manière fixe sur la périphérie du cylindre (8).
  7. Plieuse selon la revendication 6,
    caractérisée en ce
    que l'élément de coupe (14) est recouvert des deux côtés par un dispositif de protection et de serrage (42) constitué d'une matière ayant l'élasticité du caoutchouc, pour la protection contre les blessures ainsi que pour le serrage de l'arête antérieure (30) de la bande de matériau à imprimer (6).
  8. Plieuse selon l'une quelconque des revendications précédentes,
    caractérisée en ce
    que l'élément de transport circulant (12, 22, 36, 38) tourne à une vitesse réduite par rapport à la surface de transport de signature (10), à tel point qu'un espace vide (28) se forme entre la lame de coupe (14) et l'arête antérieure (30) de la bande de matériau à imprimer (6) après le processus de découpe avec une rotation progressive du cylindre (8).
  9. Plieuse selon la revendication 8,
    caractérisée en ce
    qu'un dispositif de préhension d'arête antérieure (32) est prévu sur le cylindre (8), ledit dispositif saisissant l'arête antérieure (30) de la signature (2) détachée de la bande de matériau à imprimer (6) à travers l'espace vide formé (28).
  10. Plieuse selon la revendication-8 ou 9,
    caractérisée en ce
    que le rapport entre la vitesse de la surface de transport (10) du cylindre (8) et la vitesse de l'élément de transport (12, 22, 36, 38) circulant, en forme de bande est de n/m, n et m étant respectivement des entiers naturels.
  11. Plieuse selon l'une quelconque des revendications précédentes,
    caractérisée en ce
    qu'un autre élément de transport (40) circulant, en forme de bande est placé, vu dans le sens de rotation du cylindre (8), en aval de l'élément de transport (12, 22, 36, 38) circulant, en forme de bande.
  12. Plieuse selon la revendication 10 ou 11,
    caractérisée en ce
    que l'élément de transport (36, 38) circulant, en forme de bande est fabriqué sur toute sa longueur à partir d'un matériau résistant aux endommagements causés par la lame de coupe (14), et l'autre élément de transport (40) circulant, en forme de bande est fabriqué à partir d'un matériau non résistant à la découpe.
  13. Plieuse selon l'une quelconque des revendications 11 ou 12,
    caractérisée en ce
    que l'autre élément de transport (40) circulant, en forme de bande possède une longueur supérieure d'un multiple à l'élément de transport (12, 22, 36, 38) circulant, en forme de bande.
  14. Plieuse selon l'une quelconque des revendications 11 à 13,
    caractérisée en ce
    que l'autre élément de transport (40) circulant, en forme de bande tourne à sensiblement la même vitesse que l'élément de transport (12, 22, 36, 38) circulant, en forme de bande.
  15. Plieuse selon l'une quelconque des revendications précédentes,
    caractérisée en ce
    que l'élément de transport (12, 22, 36, 38) circulant, en forme de bande est guidé par des poulies de renvoi autour de l'élément d'enclume (16) rotatif de façon que par rapport au centre de rotation du cylindre (8) l'élément de transport (12, 22, 36, 38) circulant, en forme de bande soit guidé, de façon appliquée contre le pourtour du cylindre (8), par-delà une zone angulaire prédéfinie avant le point d'interaction de la lame de coupe (14) et de l'élément d'enclume (18).
  16. Plieuse selon l'une quelconque des revendications précédentes,
    caractérisée en ce
    que le cylindre est un cylindre à plioir (8) ou un cylindre de transfert.
EP03008025A 2002-05-15 2003-04-11 Plieuse dans une machine rotative d'impression Expired - Lifetime EP1362819B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10221794A DE10221794A1 (de) 2002-05-15 2002-05-15 Falzapparat in einer Rollenrotationsdruckmaschine
DE10221794 2002-05-15

Publications (3)

Publication Number Publication Date
EP1362819A2 EP1362819A2 (fr) 2003-11-19
EP1362819A3 EP1362819A3 (fr) 2005-01-26
EP1362819B1 true EP1362819B1 (fr) 2007-07-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP03008025A Expired - Lifetime EP1362819B1 (fr) 2002-05-15 2003-04-11 Plieuse dans une machine rotative d'impression

Country Status (6)

Country Link
US (2) US7329219B2 (fr)
EP (1) EP1362819B1 (fr)
JP (1) JP4838487B2 (fr)
CN (1) CN100402284C (fr)
DE (2) DE10221794A1 (fr)
HK (1) HK1072745A1 (fr)

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CN109292492B (zh) * 2018-12-10 2020-06-05 合肥菲力姆科技有限公司 一种医用热敏胶片打印机进料机构
CN113401700B (zh) * 2021-08-18 2021-11-19 常州树杰塑业有限公司 一种烫印机及其工作方法
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FR2767804B1 (fr) * 1997-09-02 1999-11-26 Heidelberger Druckmasch Ag Dispositif de coupe de matiere dans une plieuse d'une machine rotative a imprimer
US6520057B1 (en) * 1997-09-30 2003-02-18 Eastman Machine Company Continuous system and method for cutting sheet material
US6604444B1 (en) * 1998-10-29 2003-08-12 Heidelberger Druckmaschinen Ag Low maintenance cutting rubber
US6460439B2 (en) * 1998-11-04 2002-10-08 Heidelberger Druckmaschinen Ag Integrated knife assembly
ES2203049T3 (es) * 1999-02-25 2004-04-01 Fosber S.P.A. Aparato para el corte transversal de material en banda.
US6375605B1 (en) * 2000-02-07 2002-04-23 William P. Niedermeyer Method and apparatus for making multicolored stacks of folded product

Also Published As

Publication number Publication date
EP1362819A3 (fr) 2005-01-26
JP2003341929A (ja) 2003-12-03
US20070270297A1 (en) 2007-11-22
US7329219B2 (en) 2008-02-12
CN1457982A (zh) 2003-11-26
HK1072745A1 (en) 2005-09-09
DE10221794A1 (de) 2003-11-27
JP4838487B2 (ja) 2011-12-14
CN100402284C (zh) 2008-07-16
DE50307749D1 (de) 2007-09-06
EP1362819A2 (fr) 2003-11-19
US20040058793A1 (en) 2004-03-25

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