EP1362819B1 - Folding apparatus in a rotary press - Google Patents
Folding apparatus in a rotary press Download PDFInfo
- 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
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- EP
- European Patent Office
- Prior art keywords
- cylinder
- cutting
- recited
- folding apparatus
- shaped conveying
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- 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
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- 238000005520 cutting process Methods 0.000 claims description 97
- 239000000463 material Substances 0.000 claims description 34
- 230000006378 damage Effects 0.000 claims description 4
- 230000003993 interaction Effects 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 description 14
- 230000008901 benefit Effects 0.000 description 10
- 239000000758 substrate Substances 0.000 description 8
- 230000001681 protective effect Effects 0.000 description 6
- 229920000271 Kevlar® Polymers 0.000 description 4
- 239000013013 elastic material Substances 0.000 description 4
- 239000004761 kevlar Substances 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229920002635 polyurethane Polymers 0.000 description 3
- 239000004814 polyurethane Substances 0.000 description 3
- 230000000750 progressive effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000000295 complement effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
Images
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)
Description
Die Erfindung betrifft einen Falzapparat in einer Rollenrotationsdruckmaschine gemäß dem Oberbegriff von Anspruch 1.The invention relates to a folding apparatus in a web-fed rotary printing press according to the preamble of
In Rollenrotationsdruckmaschinen werden die zu bedruckenden Materialbahnen von einer Papierrolle abgezogen und nach dem Bedrucken in einem oder mehreren Druckwerken einem Falzapparat zugeführt, in dem die Bahnen durch eine Schneideinrichtung in einzelne Signaturen zerteilt und im Anschluss daran mittels eines an einem Falzmesserzylinder angeordneten Falzmessers in Querrichtung gefalzt werden.In web-fed rotary printing presses, 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 ,
Hierbei besteht die Notwendigkeit, dass die Signaturen während des Schneidvorgangs und des sich anschließenden Transports zum und/oder auf dem Falzmesserzylinder, oder auch einem Transferzylinder des Falzapparates, stets kontrolliert geführt werden, um sicherzustellen, dass die vorlaufenden Ecken der Signaturen nicht umschlagen und die Falzbrüche exakt an den vorgesehenen Positionen angeordnet sind.In this case, there is a need that the signatures during the cutting process and the subsequent transport to and / or on the folding blade, or a transfer cylinder of the folder, always controlled to ensure that the leading corners of the signatures do not turn over and the folding breaks are arranged exactly at the intended positions.
Aus der
Das Dokument
Demgemäß ist es eine Aufgabe der vorliegenden Erfindung, einen Falzapparat in einer Rollenrotationsdruckmaschine zu schaffen, der bei einer reduzierten Anzahl von Baukomponenten eine stets kontrollierte Führung der Signaturen beim Scheidvorgang sowie beim Transport durch den Falzapparat gewährleistet.Accordingly, it is an object of the present invention to provide a folder in a web-fed rotary printing press which, with a reduced number of components, ensures always controlled guidance of the signatures during the cutting operation as well as during transport through the folder.
Diese Aufgabe wird erfindungsgemäß durch die Merkmale von Anspruch 1 gelöst.This object is achieved by the features of
Weitere Merkmale der Erfindung ergeben sich aus den Unteransprüchen.Further features of the invention will become apparent from the dependent claims.
Gemäß der Erfindung umfasst ein Falzapparat zum Falzen von Signaturen, die durch eine Schneideinrichtung von einer laufenden, in einer Rollenrotationsdruckmaschine bedruckten Bedruckstoffbahn abgetrennt werden einen Zylinder, insbesondere Falzmesserzylinder oder Transferzylinder oder Sammelzylinder, auf dessen Umfangsoberfläche - nachfolgend als Signatur-Transportoberfläche bezeichnet - die Signaturen mit Hilfe von zumindest einem umlaufenden bandförmigen Transportelement gefördert werden. Die Schneideinrichtung weist hierbei in erfindungsgemäßer Weise ein am Falzmesserzylinder angeordnetes Schneidmesser auf, das mit einem rotierenden oder umlaufenden Ambosselement vorzugsweise in Form eines Schneidmesserzylinders, zusammenwirkt. Das umlaufende bandförmige Transportelement ist um das rotierende Ambosselement in der Weise herumgeführt, dass ersteres beim Schneidvorgang der Signaturen als Stützelement oder Gegendruckelement für das Schneidmesser wirkt.According to the invention, 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. In this case, 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.
Das umlaufende bandförmige Transportelement kann dabei z.B. direkt an der Umfangsoberfläche des rotierenden Ambosselements anliegend um das rotierende Ambosselement herumgeführt sein.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.
In gleicher Weise ist es jedoch möglich, dass umlaufende bandförmige Transportelement ganz oder teilweise um die Peripherie des Ambosselements und zusätzlich über Umlenkrollen zu führen. Als besonders Vorteilhaft hat es sich in diesem Zusammenhang herausgestellt, wenn die Umlenkrollen derart angebracht sind, dass - in Bezug auf das Drehzentrum des Falzmesserzylinders - das umlaufende bandförmige Transportelement über einen Winkelbereich von ca. 5° bis 40° vor dem Wechselwirkungspunkt von Schneidmesser und Ambosselement am Umfang des Falzmesserzylinders anliegend geführt wird, und die Bedruckstoffbahn zwischen Umfangsoberfläche des Falzmesserzylinders und dem Transportelement über diesen Bereich hinweg vor dem Schneidvorgang sozusagen sandwichartig gehalten wird. Hierdurch ergibt sich eine starke Herabsetzung der durch den Schneidvorgang hervorgerufenen Bahnschwingungen.In the same way, however, it is possible for the circulating band-shaped transport element to be guided wholly or partly around the periphery of the anvil element and additionally via deflecting rollers. Particularly advantageous it has been found in this context, when 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.
In gleicher Weise kann es jedoch vorgesehen sein, wenn die Bedruckstoffbahn im Wesentlichen tangential zwischen Ambosselement und Falzmesserzylinder einläuft,In the same way, however, it can be provided if the printing material web runs in substantially tangentially between anvil element and folding blade cylinder,
Durch die Erfindung ergibt sich der Vorteil, dass die Signaturen auch bei sehr hohen Geschwindigkeiten sicher geführt werden, ohne dass die vorlaufenden Ecken der Signaturen nach dem Schneidvorgang infolge des entstehenden Fahrtwindes in nachteiliger Weise umschlagen und zu einem Papierstau oder gar einer Beschädigung des Falzapparates führen. Weiterhin besitzt die erfindungsgemäße Vorrichtung den Vorteil, dass die Schnittkanten der Signaturen durch den Einsatz einer Schneideinrichtung mit einem sich über die gesamte Breite der Bedruckstoffbahn erstreckenden Schneidmesser prinzipbedingt gerade und glatt sind, und nicht - wie bei den Vorrichtungen des Standes der Technik, bei denen ein erster und ein zweiter Teilschnitt nacheinander durchgeführt werden - Stufen aufweisen, die beispielsweise dadurch entstehen, dass die Signaturen durch die Transportbänder z.B. infolge von Schwingungen nicht präzise geführt werden.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.
Bei der bevorzugten Ausführungsform der Erfindung ist das bandförmige Transportelement als Riemen ausgebildet, der vorzugsweise in einer am rotierenden Ambosselement gebildeten Nut geführt ist, wobei die Tiefe der Nut geringfügig kleiner als die Dicke des Riemens ist. Obwohl hierbei bevorzugter Weise nicht nur ein einziger Riemen, sondern eine Vielzahl von in bekannter Weise nebeneinander im Abstand zueinander angeordneter Riemen zum Einsatz gelangen, wird die Erfindung nachfolgend zur Vereinfachung am Beispiel eines einzigen Riemens beschrieben.In the preferred embodiment of the invention, 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. Although in this case preferably not only a single belt, but a plurality of juxtaposed in a known manner juxtaposed belts are used, the invention will be described below for simplicity using the example of a single belt.
Der Riemen ist gemäß einer ersten Ausführungsform der Erfindung als Zahnriemen ausgebildet, der in den Bereichen, in denen das Schneidmesser beim Schneidvorgang mit diesem zusammenwirkt, mit verstärkten Abschnitten oder Einsätzen, z.B. aus Metall oder aus Kevlar, versehen ist, auf die das Schneidmesser beim Schneidvorgang gepresst wird, um die dazwischen befindliche Bahn zu schneiden. Hierdurch ergibt sich der Vorteil, dass die innere Struktur, insbesondere die Längsstränge zur Aufnahme der Zugkräfte innerhalb des Riemens, weiterhin erhalten bleiben können, wenn die Abschnitte lediglich an der glattflächigen Oberseite des Zahnriemens angeordnet sind, und dadurch ein kostengünstiger herkömmlicher Zahnriemen verwendet werden kann, der lediglich vergleichsweise geringfügiger konstruktiver Modifikationen bedarf.According to a first embodiment of the invention, 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. This results in the advantage that the inner structure, in particular the longitudinal strands for absorbing the tensile forces within the belt, can be maintained if the sections are arranged only on the smooth-surfaced upper side of the toothed belt, and thereby a cost-effective conventional toothed belt can be used, which requires only comparatively minor constructive modifications.
Die verstärkten Abschnitte sind dabei vorzugsweise jeweils in einem Abstand zueinander angeordnet, der der jeweiligen Abschnittslänge der Signatur entspricht, und der sich im Falle eines Schlupfes zwischen dem Zahnriemen und der Umfangsoberfläche des Falzmesserzylinders um einen Wert vergrößert, der der Breite der entstehenden Lücke entspricht, die sich im Laufe der Drehung des Falzzylinders durch den Schlupf zwischen der vorlaufenden Kante der Bedruckstoffbahn, bzw. einer nachfolgenden Signatur und der nachlaufenden Kante einer vorlaufenden Signatur ergibt.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.
Die verstärkten Abschnitte sind bei der bevorzugten Ausführungsform der Erfindung in vorteilhafter Weise jeweils mit einer Schneidnut versehen, in die das zugehörige Schneidmesser des Schneidmesserzylinders beim Schneidvorgang eintaucht. Durch das Einbringen einer zusätzlichen Nut in die verstärkten Abschnitte des Zahnriemens ergibt sich der Vorteil, dass die Schnittkanten der Signaturen auch bei mehrlagigen Signaturen sehr präzise und glatt ausgebildet werden.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. By introducing an additional groove in the reinforced portions of the toothed belt results the advantage that the cut edges of the signatures are formed very precisely and smoothly even with multi-layered signatures.
Der Zahnriemen wird weiterhin mit seiner gezahnten Seite um das rotierende, vorzugsweise als Zylinder ausgebildete Ambosselement und mit seiner ebenen Rückseite um den Falzmesserzylinder herumgeführt, wobei der Antrieb des Zahnriemens vorzugsweise durch eine am rotierenden Ambosselement gebildete Verzahnung über das Ambosselement erfolgt, in die die gezahnte Seite des Zahnriemens eingreift. Hierdurch ergibt sich der Vorteil, dass der Zahnriemen mit einer hohen Phasenkonstanz zum Ambosselement bewegt wird, wodurch sich eine sehr hohe Genauigkeit bei der Einhaltung des Schnittregisters erzielen lässt.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. This results in the advantage that the toothed belt is moved with a high phase constancy to the anvil element, whereby a very high accuracy in the maintenance of the cut register can be achieved.
Bei der bevorzugten Ausführungsform der Erfindung wird der Zahnriemen, bzw. allgemein das umlaufende Transportelement, mit einer gegenüber der Signatur-Transportoberfläche des Falzmesserzylinder verringerten Geschwindigkeit bewegt. Die Geschwindigkeit ist hierbei derart, dass zwischen dem Schneidmesser und der vorlaufenden Kante der Bedruckstoffbahn nach dem Schneidvorgang mit fortschreitender Drehung des Falzmesserzylinders eine Lücke entsteht, die sich durch den Schlupf zwischen der Signatur-Transportoberfläche des Falzmesserzylinders und der mit einer geringeren Geschwindigkeit durch den Zahnriemen oder das umlaufende Transportelement bewegten abgetrennten Signatur ergibt.In the preferred embodiment of the invention, 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.
Durch die in dieser Weise mit fortschreitender Drehung des Falzmesserzylinders entstehende Lücke zwischen dem Schneidelement, bzw. der nachlaufenden Kante einer vorhergehenden Signatur und dem um die Peripherie herumgeführten vorlaufenden Ende der Bedruckstoffbahn vor dem Abtrennen der nachfolgenden Signatur ergibt sich der Vorteil, dass die Vorderkante der durch das umlaufende Transportelement auf der Umfangsoberfläche des Falzmesserzylinders gehaltenen Bedruckstoffbahn vor dem Abtrennen der Signatur durch eine Vorderkantengreifereinrichtung ergriffen werden kann, die durch die Lücke hindurch die Vorderkante der Bedruckstoffbahn ergreift. Die Vorderkantengreifeinrichtung kann hierbei eine bekannte Greifereinrichtung sein, welche die Vorderkante oder die vorlaufende Kante der Bedruckstoffbahn in vorteilhafter Weise gegen eine im Winkel nach innen verlaufende Greiferauflagefläche drückt und festklemmt. Das Schließen der Greifer erfolgt hierbei vorzugsweise gleichzeitig oder eine sehr kurze Zeit nach dem Abtrennen der Signatur von der Bedruckstoffbahn durch die Schneideinrichtung. Hierdurch wird die Signatur nach dem Schließen der Greifereinrichtung umgehend auf die Umfangsgeschwindigkeit des Falzmesserzylinders gebracht und bei dem sich anschließenden bekannten Falzvorgang in bekannter Weise durch die Greifereinrichtung gehalten, wenn das Falzmesser die Signatur in die zugehörigen Falzklappen eines nachgeordneten Falzklappenzylinders stößt.By resulting in this way with progressive rotation of the folding blade gap between the cutting element, or the trailing edge of a previous signature and the leading around the periphery leading end of the printing substrate before separating the subsequent signature has the advantage that the leading edge of the circulating transport element held on the peripheral surface of the folding blade cylinder printing material web can be taken before separation of the signature by a leading edge gripper 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. As a result, 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.
Erst durch den erfindungsgemäßen Schlupf zwischen Signatur und Umfangsoberfläche des Falzmesserzylinders ergibt sich bei der erfindungsgemäßen Vorrichtung die Möglichkeit, dass die Greifereinrichtungen ausreichend Platz finden, um aus der Umfangsoberfläche des Falzmesserzylinders herauszufahren und die vorlaufende Kante der Bedruckstoffbahn in zuverlässiger Weise zu ergreifen.Only by the inventive slip between signature and peripheral surface of the folding blade results in the device according to the invention, the possibility that the gripper devices find sufficient space to move out of the peripheral surface of the folding blade and to take the leading edge of the printing material in a reliable manner.
Das Verhältnis der Geschwindigkeiten der Transportoberfläche des Falzmesserzylinders und der Geschwindigkeit des umlaufenden bandförmigen Transportelements entspricht bei der bevorzugten Ausführungsform der Erfindung dem Quotienten zweier natürlicher Zahlen, um sicherzustellen, dass die Schneidelemente am Falzmesserzylinder nach einer vollständigen Umdrehung desselben wieder mit einem verstärkten Abschnitt des Zahnriemens zusammentreffen. In entsprechender Weise gilt das Gleiche auch für die jeweilige Länge der Transportoberfläche oder Umfangsoberfläche des Falzmesserzylinders zur Länge des umlaufenden Transportelements. Hierbei kann die der Länge der Transportoberfläche zugeordnete Zahl n beispielsweise im Bereich zwischen 1 bis 5 Längeneinheiten liegen und beträgt vorzugsweise 3 Längeneinheiten, wohingegen die der Länge des umlaufenden Transportelements zugeordnete Zahl m z.B. im Bereich zwischen 1 und 3 Längeneinheiten, vorzugsweise bei 1 Längeneinheit liegt. Wenn hierbei von Längeneinheit gesprochen wird, so ist damit insbesondere die Länge des maximal verarbeitbaren Signaturformats gemeint. Die Zahlen, sowie die Längeneinheiten können jedoch auch andere Werte besitzen.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. In a corresponding manner, 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. In this case, 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, whereas 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. However, the numbers, as well as the length units can also have other values.
Das Schneidelement kann beispielsweise feststehend am Falzmesserzylinder angeordnet und durch eine an beiden Seiten des Schneidelements vorgesehene, die Spitze des Schneidelements in radialer Richtung überragende Schutz- und Klemmeinrichtung aus gummielastischem Werkstoff, beispielsweise aus Polyurethan, geschützt sein. Dies bietet den Vorteil, dass die Schutz- und Klemmeinrichtung die Bedruckstoffbahn beim Schneidvorgang automatisch gegen den Ambosszylinder, bzw. gegen die entsprechenden verstärkten Abschnitte des umlaufenden Transportelements drückt und dort fixiert.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. This offers the advantage that the protective and clamping device automatically presses the printing substrate during the cutting process against the anvil cylinder, or against the corresponding reinforced portions of the revolving transport element and fixed there.
Nach einem weiteren, dem erfindungsgemäßen Prinzip zugrunde liegenden Gedanken, ist das Schneidelement oder Schneidmesser nicht fest am Falzmesserzylinder angeordnet, sondern in dessen Peripherie zurückfahrbar. Dies kann beispielsweise durch eine zum Antrieb der Falzmesser in bekannter Weise eingesetzte Steuerkurve und einen Kurvenfolger erfolgen, wobei die Steuerkurve gestellfest angeordnet ist, und der Kurvenfolger mit dem Schneidelement gekoppelt ist, sodass dieser durch die Drehung des Falzmesserzylinders betätigt wird.According to another, underlying the principle of the invention, 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.
Gemäß einer weiteren Ausführungsform der Erfindung ist dem umlaufenden bandförmigen Transportelement in Drehrichtung des Falzmesserzylinders betrachtet ein weiteres umlaufendes bandförmiges Transportelement nachgeordnet, welches beim Einsatz eines in die Peripherie des Falzmesserzylinders zurückfahrbaren Schneidelements in vorteilhafter Weise durch ein herkömmliches, von Falzapparaten her bekanntes Transportband, bzw. eine Vielzahl von in bekannter Weise parallel im Abstand zueinander verlaufender Transportbänder ausgebildet ist. Hierdurch ergibt sich der Vorteil, dass das weitere umlaufende Transportelement sehr kostengünstig als ein im Falzapparatbau seit langem eingesetztes Standardbauteil ausgeführt sein kann, wohingegen bei dieser Ausführungsform der Erfindung das um das Ambosselement herumgeführte Transportelement durch einen glattwandigen endlosen Riemen aus über die gesamte Länge hinweg schnittfestem Material, beispielsweise aus Kevlar oder aus Metall oder einem anderen schnittfesten, aber elastischen Werkstoff besteht, der in der Fertigung vergleichsweise aufwändig ist. Ein weiterer Vorteil, der sich hierdurch ergibt, ist darin zu sehen, dass die Länge des aus schnittfestem Material gebildeten ersten umlaufenden glattwandigen Riemens vergleichsweise kurz gewählt werden kann, wohingegen das weitere, durch ein herkömmliches Transportband oder eine Vielzahl von herkömmlichen Transportbändern gebildete umlaufende Transportelement eine vergleichsweise große Länge aufweisen kann, ohne dass die Kosten hierdurch in entsprechender Weise vergrößert werden.According to a further embodiment of the invention, 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. This results in the advantage that 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. 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.
Durch die Wahl eines vergleichsweise kurzen umlaufenden Transportelements aus schnittresistentem Material ergibt sich zudem der Vorteil, dass dieses mit einer variablen geringeren Geschwindigkeit oder auch höheren Geschwindigkeit als die Umfangsoberfläche des Falzmesserzylinders umlaufen kann, um die Größe der durch die Geschwindigkeitsdifferenz entstehenden Lücke zwischen der Schneideinrichtung, bzw. der nachlaufenden Kante einer vorlaufenden Signatur sowie der vorlaufenden Kante der Bedruckstoffbahn nach Belieben zu vergrößern oder zu verkleinern. Bei dieser Ausführungsform der Erfindung ist in vorteilhafter Weise die gesamte Umfangsoberfläche des Ambosselements als eine mit entsprechenden Nuten für den oder die umlaufenden schnittresistenten Riemen versehene zylindrische Oberfläche ausgebildet, die mit einem in vorteilhafter Weise ebenfalls gummielastischen Material, wie z. B. Polyurethan, beschichtet ist, welches über die gesamte Umfangsoberfläche des Ambosselements hinweg als Schneidfläche dient, die mit dem Schneidelement in den Bereichen zusammenwirkt, in denen die schnittresistenten Riemen des umlaufenden randförmigen Transportelements nicht verlaufen.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. In this embodiment of the invention, 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. As 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.
Die Erfindung wird nachfolgend mit Bezug auf die Zeichnungen anhand bevorzugter Ausführungsformen beschrieben.The invention will be described below with reference to the drawings based on preferred embodiments.
In den Zeichnungen zeigen:
- Fig. 1
- eine schematische Darstellung eines erfindungsgemäßen Falzapparates in einer Rollenrotationsdruckmaschine,
- Fig. 2a
- eine schematische Darstellung einer ersten Ausführungsform beim Schneidvorgang, bei der ein sich um das Ambosselement sowie den Falzmesserzylinder herum erstreckender Zahnriemen zum Einsatz gelangt,
- Fig. 2b
- die Ausführungsform von Fig. 2 a nach einer Weiterdrehung des Falzmesserzylinders und dem Schließen der Vorderkantengreifereinrichtung zur Veranschaulichung der entstehenden Lücke zwischen Schneidelement und vorlaufendem Ende der Bedruckstoffbahn,
- Fig. 3
- eine abgebrochene Querschnittsansicht des rotierenden Ambosselements im Bereich der Stelle, an der das Schneidelement mit dem Ambosselement zusammenwirkt,
- Fig. 4
- eine schematische Darstellung der durch die in Fig. 3 dargestellten Nuten hindurchlaufenden Zahnriemen,
- Fig. 5
- eine Querschnittsansicht eines Zahnriemens mit zwei darin angeordneten verstärkten Abschnitten,
- Fig. 6
- eine weitere Ausgestaltung eines bandförmigen Transportelements mit einer darin gebildeten Schneidnut sowie daran gebildeten Eingriffsöffnungen für einen phasengenauen Antrieb,
- Fig. 7
- eine schematische Seitenansicht einer weiteren Ausführungsform der Erfindung, bei der ein erstes umlaufendes bandförmiges Transportelement sowie ein diesem nachgeordnetes weiteres umlaufendes bandförmiges Transportelement zum Einsatz gelangen,
- Fig. 8a
- eine vergrößerte Detailansicht der Ausführungsform von Fig. 7, in einer ersten Position des Falzmesserzylinders, in der das Schneidelement mit dem Ambosselement zusammenwirkt und eine Signatur von der einlaufenden Bedruckstoffbahn abtrennt,
- Fig. 8b
- eine weitere Position der Ausführungsform von Fig. 8a nach einer Weiterdrehung des Falzmesserzylinders und dem Schließen der Vorderkantengreifereinrichtung zur Veranschaulichung der entstehenden Lücke,
- Fig. 9
- eine schematische räumliche Darstellung einer bevorzugten Ausführungsform des Schneidelements, welches mit einer Schutz- und Klemmeinrichtung ummantelt ist,
- Fig. 10
- eine schematische räumliche Darstellung des Ambosselements mit den darin gebildeten Nuten, durch die die glattwandig ausgebildeten bandförmigen Transportelemente aus schnittresistentem Material geführt sind, und
- Fig. 11
- eine Aufsicht der Ausführungsform von Fig. 7 zur Veranschaulichung der Anordnung von umlaufenden Transportelementen mit den dazwischenliegenden Greifereinrichtungen zum Ergreifen der Vorderkante der Signaturen.
- Fig. 1
- a schematic representation of a folding apparatus according to the invention in a web-fed rotary printing press,
- Fig. 2a
- a schematic representation of a first embodiment of the cutting process, in which a toothed belt extending around the anvil element and the folding blade cylinder is used,
- Fig. 2b
- 2 a after a further rotation of the folding blade cylinder and the closing of the leading edge gripper device to illustrate the resulting gap between the cutting element and the leading end of the printing material web,
- Fig. 3
- a broken cross-sectional view of the rotating anvil member in the region of the point at which the cutting element cooperates with the anvil element,
- Fig. 4
- 3 is a schematic representation of the toothed belts passing through the grooves shown in FIG. 3;
- Fig. 5
- a cross-sectional view of a toothed belt with two reinforced sections arranged therein,
- Fig. 6
- a further embodiment of a band-shaped transport element with a cutting groove formed therein and engagement openings formed therefor for a phase-accurate drive,
- Fig. 7
- a schematic side view of another embodiment of the invention, in which a first circulating belt-shaped transport element and a subsequent further circulating belt-shaped transport element are used,
- Fig. 8a
- an enlarged detail of the embodiment of Fig. 7, in a first position of the folding blade, in which the cutting element with the Cooperates anvil element and separates a signature from the incoming printing material web,
- Fig. 8b
- a further position of the embodiment of Figure 8a after a further rotation of the folding blade and the closing of the leading edge gripper device to illustrate the resulting gap,
- Fig. 9
- a schematic spatial representation of a preferred embodiment of the cutting element, which is sheathed with a protective and clamping device,
- Fig. 10
- a schematic spatial representation of the anvil element with the grooves formed therein, through which the smooth-walled band-shaped transport elements are made of cut-resistant material, and
- Fig. 11
- a plan view of the embodiment of Fig. 7 illustrating the arrangement of circulating transport elements with the intermediate gripper means for gripping the leading edge of the signatures.
Wie in Fig. 1 gezeigt ist, umfasst ein erfindungsgemäßer Falzapparat 1 zum Falzen von Signaturen 2, die durch eine Schneideinrichtung 4 von einer laufenden Bedruckstoffbahn 6 abgetrennt werden einen Falzmesserzylinder 8, welcher eine Signatur-Transportoberfläche 10 aufweist, auf der die Signaturen 2 mit Hilfe von einem umlaufenden bandförmigen Transportelement 12 geführt werden.As shown in FIG. 1, a
Die Schneideinrichtung 4 umfasst hierbei ein am Falzmesserzylinder 8 angeordnetes Schneidmesser 14, sowie ein mit diesem zusammenwirkendes rotierendes Ambosselement 16, vorzugsweise in Form eines in Fig. 1 gezeigten Zylinders, um den das bandförmige Transportelement in der Weise herumgeführt ist, dass das bandförmige Transportelement beim Schneidvorgang der Signaturen 2 als Gegendruckelement oder Stützelement für das Schneidmesser 14 wirkt, welches sich wiederum an der entsprechenden Stelle des rotierenden Ambosselements 16 abstützt. Die Abstützung am rotierenden Ambosselement 16 kann hierbei beispielsweise durch eine am Ambosselement aufgenommene Nutenleiste oder ein Schneidgummi 18 erfolgen, wie dies in Fig. 4 gezeigt ist.The
Gemäß der Darstellung von Fig. 3 und 4 ist im rotierenden Ambosselement 16 zumindest eine Nut 20 gebildet, in der das umlaufende bandförmige Transportelement 12 geführt ist, wobei die Tiefe der Nut 20 geringfügig kleiner als die Dicke des bandförmigen Transportelements 12 ist. Wenn gemäß der bevorzugten Ausführungsform der Erfindung mehrere parallel nebeneinander liegende umlaufende bandförmige Transportelemente 12 zum Einsatz gelangen, werden eine entsprechende Anzahl von Nuten 20 im entsprechenden Abstand zueinander über die Breite des rotierenden Ambosselements 16 angeordnet.According to the illustration of FIGS. 3 and 4, at least one
Das umlaufende Transportelement kann gemäß der Ausführungsform von Fig. 2a, 2b und 4 durch einen Zahnriemen 22 gebildet werden, der mit seiner gezahnten Seite um das rotierende Ambosselement 16 und mit seiner ebenen Seite um den Falzmesserzylinder 8 herumgeführt ist, und der über eine Verzahnung 24 in der Umfangsoberfläche des rotierenden Ambosselements 16 angetrieben wird.The circulating transport element can be formed according to the embodiment of Fig. 2a, 2b and 4 by a
Gemäß der Darstellung von Fig. 5 ist der Zahnriemen 22 mit verstärkten Abschnitten oder Einsätzen 26 versehen, die eine Schneidnut 27 aufweisen, in welche das Schneidmesser 14 beim Schneidvorgang eintaucht. Die verstärkten Abschnitte 26 sind in einem Abstand D zueinander angeordnet, der im Wesentlichen der Länge der Signaturen 2 zuzüglich der Breite B einer Lücke 28 entspricht, die zwischen der vorlaufenden Kante 30 der Bedruckstoffbahn 6 und dem Schneidmesser 14 der Schneideinrichtung 4 dadurch gebildet wird, dass sich der Falzmesserzylinder 8 mit einer höheren Umfangsgeschwindigkeit als der Zahnriemen 22 bewegt.As shown in Fig. 5, the
Wie Fig. 2a hierbei entnommen werden kann, wird in einer ersten Zylinderposition, in der die Signatur 2 von der Bahn abgetrennt wird, eine Vorderkantengreifereinrichtung 32 betätigt, die durch die Lücke 28 hindurchtaucht und die vorlaufende Kante 30 der Bedruckstoffbahn 6, beziehungsweise der gerade entstehenden oder einer sehr kurzen Zeit vorher entstandenen Signatur 2 ergreift. Die an der Vorderkante 30 durch die Vorderkantengreifereinrichtung 32 gehaltene Signatur wird anschließend in bekannter Weise durch ein nicht dargestelltes Falzmesser in ebenfalls nicht dargestellte Falzklappen eines nachgeordneten Falzklappenzylinders gestoßen.As can be seen in FIG. 2a, in a first cylinder position, in which the
Die Geschwindigkeiten von Falzmesserzylinder 8 und bandförmigem Transportelement 12, beziehungsweise Zahnriemen 22 sind hierbei beispielsweise so gewählt, dass z. B. nach einer Viertel-Umdrehung des Zylinders 8 eine Lücke 28 mit einer Größe zwischen z. B. 1 cm und 5 cm entsteht.The speeds of
Wie in Fig. 6 weiterhin gezeigt ist, kann anstelle eines Zahnriemens 22 auch ein anderes mit Eingriffsöffnungen 34 versehenes bandförmiges Transportelement 36 verwendet werden, welches beispielsweise als ein Metallband oder Kevlarband mit einer darin vorzugsweise geformten Schneidnut 27 ausgebildet sein kann, und welches über entsprechende nicht dargestellte zapfenförmige Eingriffselemente am rotierenden Ambosselement 16 angetrieben wird, die in die Eingriffsformen 34 eingreifen.As further shown in FIG. 6, instead of a
Gemäß einer weiteren in Fig. 7 dargestellten Ausführungsform der Erfindung ist das bandförmige umlaufende Transportelement als ein aus schnittresistentem Material gefertigter, vorzugsweise glattwandiger Riemen 38 ausgestaltet, dem ein weiteres umlaufendes bandförmiges Transportelement 40 in Drehrichtung des Falzmesserzylinders 8 nachgeordnet ist. Der Riemen 38 ist hierbei über nicht näher bezeichnete Umlenkrollen in der Weise um das rotierende Ambosselement 16 herumgeführt, dass in Bezug auf das Drehzentrum des Falzmesserzylinders 8 das umlaufende bandförmige Transportelement 38 über einen Winkelbereich von ca. 40° vor dem Wechselwirkungspunkt von Schneidmesser 14 und Ambosselement 18 am Umfang des Falzmesserzylinders 8 anliegend geführt wird, und die Bedruckstoffbahn 6 zwischen der Umfangsoberfläche des Falzmesserzylinders 8 und dem Transportelement 38 über diesen Bereich hinweg vor dem Schneidvorgang gehalten wird.According to another embodiment of the invention shown in Fig. 7, the band-shaped circulating transport element is designed as a made of cut resistant material, preferably smooth-
Die gedachte tangentiale Einlaufrichtung der Bahn ist in gestrichelten Linien angedeutet.The imaginary tangential inlet direction of the web is indicated in dashed lines.
Der Riemen 38 läuft hierbei in gleicher Weise wie das weitere umlaufende Transportelement 40 vorzugsweise mit einer gegenüber der Geschwindigkeit der Signatur-Transportoberfläche 10 des Falzmesserzylinders 8 reduzierten Geschwindigkeit um, wodurch in gleicher Weise wie bei der Ausführungsform von Fig. 2a und 2b eine Lücke 28 zwischen der vorlaufenden Kante 30 der Materialbahn 6 und dem Schneidmesser 14 entsteht, durch die hindurch eine Vorderkantengreifereinrichtung 32 die Vorderkante 30 bei einer Weiterdrehung des Zylinders 8 gemäß der Darstellung von Fig. 8a und 8b ergreift und hierdurch die Signatur 2 nach dem Schneidvorgang mit der Geschwindigkeit der Signatur-Transportoberfläche 10 des Zylinders führt.The
In gleicher Weise wie der Zahnriemen 22 ist auch der Riemen 38 aus schnittfestem Material in einer zugehörigen Nut 20 geführt, die am Umfang des rotierenden Ambosselements 16 gebildet ist.In the same way as the
Wie der Darstellung von Fig. 11 entnommen werden kann, sind bei der Verwendung einer Vielzahl von nebeneinander laufenden Riemen aus schnittresistentem Material 38 sowie einer Vielzahl von weiteren nachgeordneten umlaufenden Transportelementen diese jeweils versetzt zueinander angeordnet, wobei die Vorderkantengreifereinrichtungen 32 vorteilhafterweise mittig zwischen den nachgeordneten weiteren Transportelementen 40 an den Stellen angeordnet sind, die sich in Höhe der Riemen 38 befinden.As can be seen from the illustration of FIG. 11, when a plurality of adjacent belts of cut-
Schließlich zeigt Fig. 9 eine bevorzugte Ausführungsform des Schneidmessers 14, welches seitlich mit einer Schutz- und Klemmeinrichtung 42 versehen ist, die aus gummielastischem Material, beispielsweise aus Polyurethan, besteht. Die Schutz- und Klemmeinrichtung 42 dient zum einen als Schutz gegen Verletzungen durch das Schneidmesser 14, welches vorzugsweise fest an der Peripherie des Falzmesserzylinders 8 angebracht ist, und sorgt zum anderen dafür, dass die vorlaufende neu entstehende Schnittkante der Bahn 6 beim Schneidvorgang gegen das rotierende Ambosselement 16 sowie gegen das als Gegendruckelement oder Stützelement wirkende umlaufende bandförmige Transportelement 12 gedrängt wird.Finally, Fig. 9 shows a preferred embodiment of the
- 11
- Falzapparatfolding
- 22
- Signatursignature
- 44
- Schneideinrichtungcutter
- 66
- Bedruckstoffbahnprinting material
- 88th
- Falzmesserzylinderfolding blade
- 1010
- Signatur-TransportoberflächeSignature transport surface
- 1212
- umlaufendes bandförmiges Transportelementrevolving band-shaped transport element
- 1414
- Schneidmessercutting blade
- 1616
- rotierendes Ambosselementrotating anvil element
- 1818
- Nutenleistegrooved strip
- 2020
- Nutgroove
- 2222
- Zahnriementoothed belt
- 2424
- Verzahnung im AmbosselementGearing in the anvil element
- 2626
- Verstärkter AbschnittReinforced section
- 2727
- Schneidnutcutting groove
- 2828
- Lückegap
- 3030
- vorlaufende Kante der Bedruckstoffbahnleading edge of the substrate web
- 3232
- VorderkantengreifereinrichtungLeading edge gripper device
- 3434
- Eingriffsöffnungengagement opening
- 3636
- Metallband/KevlarbandMetal Band / Kevlar tape
- 3838
- Riemen aus schnittresistentem MaterialBelt made of cut-resistant material
- 4040
- weiteres umlaufendes bandförmiges Transportelementanother revolving band-shaped transport element
- 4242
- Schutz- und KlemmeinrichtungProtective and clamping device
- DD
-
Abstand der verstärkten Abschnitte 26Distance of the reinforced
sections 26 - BB
-
Breite der Lücke 28Width of the
gap 28
Claims (16)
- Folding apparatus (1) in a web-fed rotary printing press for folding signatures (2) which are cut off from a running web of material (6) by a cutting device (40) and which are carried on a signature transport surface (10) of a cylinder, in particular a folding blade cylinder (8), with the aid of the at least one rotating band-shaped conveying element (12, 22, 36, 38) around the cylinder,
characterized in that,
the cutting device (4) comprises a cutting blade (14) arranged on the cylinder (8) and a rotating anvil element (16) interacting with the cutting blade, the rotating band-shaped conveying element (12, 22, 36, 38) being passed around the rotating anvil element (16) and acting as a counter-pressure element for the cutting blade (14) during cutting of the signatures. - The folding apparatus as recited in claim 1, characterized in that the band-shaped conveying element (12, 22, 36, 38) is a belt guided in a groove (20) formed on the rotating anvil element (16), a depth of the groove (20) being smaller than a thickness of the band-shaped conveying element.
- The folding apparatus as recited in claim 2, characterized in that the belt is a toothed belt (22) provided with reinforced sections (26) in regions where the cutting blade (14) interacts with the belt during the cutting operation.
- The folding apparatus as recited in claim 3, characterized in that each of the reinforced sections (26) is provided with a cutting groove (27) for receiving the cutting blade (14) during the cutting operation.
- The folding apparatus as recited in claim 3 or 4, characterized in that the toothed belt (22) is passed around the rotating anvil element (16) with its toothed side and around the cylinder (8) with its flat side.
- The folding apparatus as recited in claim 1, characterized in that the cutting element (14) is fixedly mounted at a periphery of cylinder (8).
- The folding apparatus as recited in claim 6, characterized in that the cutting element (14) is covered by a protection and clamping device (42) on both sides for protection against injuries and for clamping the leading edge (30) of the material web (6).
- The folding apparatus as recited in any of the preceding claims, characterized in that the rotating conveying element (12, 22, 36, 38) rotates at a reduced speed in relation to the signature transport surface (10) such that, as the rotation of the cylinder (8) proceeds, a gap (28) is formed between the cutting blade (14) and a leading edge (30) of the material web (6) after the cutting operation.
- The folding apparatus as recited in claim 8, characterized in that the cylinder (8) includes a leading-edge gripping device (32) grasping the leading edge (30) of the signature (2) severed from the material web (6) through the gap.
- The folding apparatus as recited in claim 8 or 9, characterized in that a ratio of the speed of the transport surface (10) of the cylinder (8) to the speed of the rotating band-shaped conveying element (12, 22, 36, 38) is n/m, with n and m each being natural whole numbers.
- The folding apparatus as recited in any of the preceding claims, characterized in that a further rotating band-shaped conveying element (40) is arranged downstream of the rotating band-shaped conveying element (12, 22, 36, 38), viewed in the rotation direction of the cylinder (8).
- The folding apparatus as recited in claim 10 or 11, characterized in that the rotating band-shaped conveying element (36, 38) is manufactured over its entire length from a material resistant to damage by the cutting blade (14), and the further rotating band-shaped conveying element (40) is manufactured from a material not resistant to cuts.
- The folding apparatus as recited in claim 11 or 12, characterized in that the further rotating band-shaped conveying element (40) has a length which is a multiple of the length of the rotating band-shaped conveying element (12, 22, 36, 38).
- The folding apparatus as recited in claim 11 to 13, characterized in that the further rotating band-shaped conveying element (40) rotates essentially at the same speed as the rotating band-shaped conveying element (12, 22, 36, 38).
- The folding apparatus as recited-in any of the preceding claims, characterized in that the rotating band-shaped conveying element (12, 22, 36, 38) is passed around the rotating anvil element (16) via deflection pulleys in such a way that, with respect to the rotation center of the cylinder (8), the rotating band-shaped conveying element (12, 22, 36, 38) is guided on and in contact with the perimeter of the cylinder (8) over a predetermined angular range before a point of interaction of the cutting blade (14) and the anvil element (18).
- The folding apparatus as recited in any of the preceding claims, characterized in that the cylinder is a folding blade cylinder (8) or a transfer cylinder.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10221794 | 2002-05-15 | ||
DE10221794A DE10221794A1 (en) | 2002-05-15 | 2002-05-15 | Folder in a web-fed rotary press |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1362819A2 EP1362819A2 (en) | 2003-11-19 |
EP1362819A3 EP1362819A3 (en) | 2005-01-26 |
EP1362819B1 true EP1362819B1 (en) | 2007-07-25 |
Family
ID=29265324
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP03008025A Expired - Lifetime EP1362819B1 (en) | 2002-05-15 | 2003-04-11 | Folding apparatus in a rotary press |
Country Status (6)
Country | Link |
---|---|
US (2) | US7329219B2 (en) |
EP (1) | EP1362819B1 (en) |
JP (1) | JP4838487B2 (en) |
CN (1) | CN100402284C (en) |
DE (2) | DE10221794A1 (en) |
HK (1) | HK1072745A1 (en) |
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US7831745B1 (en) | 2004-05-25 | 2010-11-09 | Chelsio Communications, Inc. | Scalable direct memory access using validation of host and scatter gather engine (SGE) generation indications |
DE102005003204B3 (en) * | 2005-01-24 | 2006-06-22 | Koenig & Bauer Ag | Cross-cutting device for material web has two pressing devices at minimum spacing round cylinder, permitting cutter unhindered passage between them |
US7660306B1 (en) | 2006-01-12 | 2010-02-09 | Chelsio Communications, Inc. | Virtualizing the operation of intelligent network interface circuitry |
US7616563B1 (en) | 2005-08-31 | 2009-11-10 | Chelsio Communications, Inc. | Method to implement an L4-L7 switch using split connections and an offloading NIC |
KR100727971B1 (en) | 2005-09-01 | 2007-06-14 | 삼성전자주식회사 | Wiper, Cleaning apparatus, and Inkjet image forming apparatus with the same |
JP4891608B2 (en) * | 2005-12-19 | 2012-03-07 | 三菱重工印刷紙工機械株式会社 | Cutting control device and cutting control method for printing press |
FR2895386B1 (en) * | 2005-12-27 | 2008-04-04 | Goss Int Montataire Sa | FOLDING |
US7909316B2 (en) * | 2008-02-27 | 2011-03-22 | Kabushiki Kaisha Toshiba | Sheet folding apparatus and image forming apparatus using the same |
JP2009234761A (en) * | 2008-03-27 | 2009-10-15 | Mitsubishi Heavy Ind Ltd | Paper sheet discharge device |
DE102012103729B4 (en) * | 2012-04-27 | 2022-09-08 | Manroland Goss Web Systems Gmbh | Printing machine and manufacturing process for printed products |
US10173336B2 (en) * | 2012-10-10 | 2019-01-08 | Goss International Americas, Inc. | Lead edge mechanical binding device and method |
CN104369425B (en) * | 2014-11-12 | 2016-09-21 | 浙江华岳包装机械有限公司 | Window adhering machine film cutting device |
US20210291452A1 (en) * | 2018-05-22 | 2021-09-23 | Veda Group B.V | Method, 3d manufacturing system, extruder head therfor |
CN109292492B (en) * | 2018-12-10 | 2020-06-05 | 合肥菲力姆科技有限公司 | Medical thermal film printer feed mechanism |
CN113401700B (en) * | 2021-08-18 | 2021-11-19 | 常州树杰塑业有限公司 | Hot stamping machine and working method thereof |
JP2023032897A (en) * | 2021-08-27 | 2023-03-09 | トヨタ自動車株式会社 | Ribbon piece manufacturing method |
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DE1479627B2 (en) * | 1962-08-23 | 1971-11-11 | Trans-Atlas AG, Basel (Schweiz) | MACHINE FOR PROCESSING, PREFERABLY WELDING AND SEPARATING A DOUBLE LINE, IN PARTICULAR A THERMOPLASTIC FILM, WHEN MANUFACTURING BAGS |
DE2211118A1 (en) | 1972-03-08 | 1973-09-27 | Roeder & Spengler Ohg | CUTTING DEVICE |
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-
2002
- 2002-05-15 DE DE10221794A patent/DE10221794A1/en not_active Withdrawn
-
2003
- 2003-04-11 DE DE50307749T patent/DE50307749D1/en not_active Expired - Lifetime
- 2003-04-11 EP EP03008025A patent/EP1362819B1/en not_active Expired - Lifetime
- 2003-05-09 CN CNB031223834A patent/CN100402284C/en not_active Expired - Fee Related
- 2003-05-14 US US10/437,576 patent/US7329219B2/en not_active Expired - Fee Related
- 2003-05-15 JP JP2003136809A patent/JP4838487B2/en not_active Expired - Fee Related
-
2004
- 2004-05-18 HK HK04103510A patent/HK1072745A1/en not_active IP Right Cessation
-
2007
- 2007-07-27 US US11/881,581 patent/US20070270297A1/en not_active Abandoned
Also Published As
Publication number | Publication date |
---|---|
CN1457982A (en) | 2003-11-26 |
DE50307749D1 (en) | 2007-09-06 |
JP4838487B2 (en) | 2011-12-14 |
DE10221794A1 (en) | 2003-11-27 |
HK1072745A1 (en) | 2005-09-09 |
US20040058793A1 (en) | 2004-03-25 |
US7329219B2 (en) | 2008-02-12 |
US20070270297A1 (en) | 2007-11-22 |
JP2003341929A (en) | 2003-12-03 |
CN100402284C (en) | 2008-07-16 |
EP1362819A2 (en) | 2003-11-19 |
EP1362819A3 (en) | 2005-01-26 |
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