EP1839858B1 - Folding apparatus of a printing press and method for operating the same - Google Patents

Folding apparatus of a printing press and method for operating the same Download PDF

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Publication number
EP1839858B1
EP1839858B1 EP07006143.7A EP07006143A EP1839858B1 EP 1839858 B1 EP1839858 B1 EP 1839858B1 EP 07006143 A EP07006143 A EP 07006143A EP 1839858 B1 EP1839858 B1 EP 1839858B1
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EP
European Patent Office
Prior art keywords
cylinder
cutting
cutting blade
unit
printing material
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.)
Not-in-force
Application number
EP07006143.7A
Other languages
German (de)
French (fr)
Other versions
EP1839858A2 (en
EP1839858A3 (en
Inventor
Peter Knauer
Helmut Schnell
Marko Strukelj
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.)
Manroland Web Systems GmbH
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Manroland Web Systems GmbH
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Publication date
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Publication of EP1839858A2 publication Critical patent/EP1839858A2/en
Publication of EP1839858A3 publication Critical patent/EP1839858A3/en
Application granted granted Critical
Publication of EP1839858B1 publication Critical patent/EP1839858B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/54—Auxiliary folding, cutting, collecting or depositing of sheets or webs
    • B41F13/56—Folding or cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F13/00—Common details of rotary presses or machines
    • B41F13/54—Auxiliary folding, cutting, collecting or depositing of sheets or webs
    • B41F13/56—Folding or cutting
    • B41F13/60—Folding or cutting crosswise
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/04—Tripping devices or stop-motions
    • B41F33/08—Tripping devices or stop-motions for starting or stopping operation of cylinders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
    • B65H35/08—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with revolving, e.g. cylinder, cutters or perforators
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/50—Timing

Definitions

  • the invention relates to a folding apparatus of a printing press according to the preamble of claim 1. Furthermore, the invention relates to a method for operating a folding apparatus according to the preamble of patent claim 5.
  • Folding machines of printing presses serve for the formation of folds on printed substrates, wherein in the case of folding machines known from the prior art, a web-shaped printing stock is usually first passed through a first longitudinal folding unit having at least one former, so as to form a longitudinal fold on the web-shaped and preferably not yet severed printing substrate , Starting from the first longitudinal folding unit, the web-shaped printing material is guided in the direction of a cutting unit, which comprises at least one cutting blade cylinder and a groove cylinder cooperating with the cutting blade cylinder. In the area of the cutting unit, copies of the web-shaped substrate are cut off by cross-cutting. The cutting unit is usually followed by a Querfalzmaschine downstream, comprising at least one folding blade and a jaw cylinder.
  • Copies separated at the separating unit are moved in the direction of the jaw cylinder with the aid of the folding blade cylinder.
  • the separated from the web-shaped substrate copies, which are moved by the folding blade cylinder in the direction of the jaw cylinder, are passed to form a first transverse fold from the folding blade cylinder to the jaw cylinder.
  • second Querfalze can be formed between the jaw cylinder and a gripper cylinder, which cooperates with the jaw cylinder.
  • the copies thus provided with a longitudinal fold and with at least one transverse fold reach, starting from the transverse folding unit, into the region of a second longitudinal folding unit, which usually comprises a plurality of folding tables. In the region of the folding tables, second longitudinal folds are formed on the already pre-folded copies which run parallel to the longitudinal fold formed in the first longitudinal folding unit.
  • a so-called magazine structure may also be present, wherein in the magazine structure no longitudinal folding but longitudinal separation of the printing material takes place.
  • folders are also known, which have no Querfalzhow, in which therefore separated from the substrate copies of a collecting cylinder collectable and directly the second Lijnsfalzü be supplied.
  • a transverse perforation unit and / or a longitudinal perforation unit can be arranged between the first longitudinal folding unit or the magazine assembly and the cutting unit in order to perforate the substrate pre-folded in the region of the first longitudinal folding unit or cut longitudinally in the region of the magazine structure.
  • the perforations assist in the formation of transverse folds in the transverse folding unit and / or the formation of longitudinal folds in the second longitudinal folding unit.
  • the circumferential speed of a cutting knife cylinder or a perforation knife cylinder and a groove cylinder cooperating with the same must be separated in the area of the cutting unit in which copies are separated from the web-shaped printing substrate by cross-cutting from the web-shaped printing material Transport speed of the web-shaped substrate correspond, wherein the transport speed of the sheet-like printing material depends on the circumference of the or each plate cylinder of a printing unit, which is upstream of the folder.
  • the cutting blade cylinder and the grooved cylinder are designed to be large in circumference, which means that the circumference of the cutting blade cylinder and of the grooved cylinder is adapted to the circumference of the or each plate cylinder.
  • folders known from the prior art are format-dependent in the area of the cutting unit and optionally in the area of the transverse perforation unit. If, accordingly, different formats are to be printed on a printing press, then different folders must be kept ready for this purpose. This requires a high capital expenditure.
  • EP 1 688 381 A1 relates to a folding apparatus for a web-fed rotary printing press, with a cutting blade cylinder, with a folding blade cylinder and a jaw cylinder, with the help of the cutting knife cylinder copies are separable from a web-shaped substrate, the separated copies are held by the folding blade cylinder and further moved in the direction of the jaw cylinder, and wherein a collection operation of the folder on the folding blade several copies are collectable such that at least two separated by means of the cutting blade cylinder copies of different sheet length on the folding blade in mutual overlap and fed to the jaw cylinder.
  • the cutting blade cylinder has at least one stationary cutting blade, wherein the cutting blade cylinder is associated with a separate drive, and wherein the drive is operated uniformly in collective operation of the folder for providing copies of different sheet length to be collected uniformly and non-collective operation of the folder.
  • EP 1 069 061 A2 For example, there is known a method of cutting a web which is characterized in that the web is moved at a substantially constant speed, the web is cut into web portions of desired length, a cutting cylinder rotating at a cutting angular velocity during cutting of the web which corresponds to a peripheral speed of the cutting cylinder substantially adapted to the speed of the web, and that the angular velocity of the cutting cylinder after cutting is changed in dependence on the desired length of the web sections.
  • the object of the present invention is to provide an improved format-variable folding apparatus of a printing press and a method for operating the same.
  • This object is achieved by a folding apparatus according to claim 1. In this way it can be avoided that the cutting blade deflects the printing material upon entry and / or ejection and impairs the transport of the same.
  • the cylinders of the transverse perforation unit may be designed analogous to the cylinders of the cutting unit.
  • Fig. 1 shows a possible embodiment of a folding apparatus 10 according to the invention of a printing press, wherein the in Fig. 1 has shown a folding former 11 comprehensive first longitudinal folding unit 12, which serves to form a first L jossfalzes on web-like, not yet severed substrate.
  • the first longitudinal folding unit 12 is followed by a cutting unit 13, which serves for the separation of copies of the web-shaped substrate by cross-cutting.
  • the cutting unit 13 comprises a cutting blade cylinder 14 and cooperating with the cutting blade cylinder 14 groove cylinder 15 in the cutting unit 13 separated from the sheet substrate copies are collected on a collecting cylinder 16 of the folder 10 and fed from the collecting cylinder 16 a second Lssensfalzhow 17, in the area of those on the separated copies second longitudinal folds can be formed, which run parallel to the first longitudinal fold unit 12 formed in the first longitudinal folds.
  • a longitudinal perforation unit 18 is arranged which serves to form longitudinal perforations on the printing substrate, the longitudinal perforations supporting the formation of the second longitudinal folds in the region of the second longitudinal folding unit 17.
  • an acceleration unit 20 are separated from the substrate copies on the peripheral speed of the collecting cylinder 16 can be accelerated to transport the substrate or the copies by the folding unit 10.
  • FIG. 1 illustrated embodiment of a folding apparatus 10 therefore serves only the formation of longitudinal folds on the substrate.
  • the invention should not be limited to this specific embodiment of a folder, but the invention can also be used on folders, which additionally have at least one Querfalzmaschine and optionally a Querperforationsappel.
  • the transport speed of the printing material through the folding apparatus 10 in the region of the first longitudinal folding unit 12 and the cutting unit 13 is determined by the circumference of plate cylinders of a printing unit, which corresponds to the in Fig. 1 shown folding apparatus 10 is upstream. Since the peripheral speeds of the cutting blade cylinder 14 and grooved cylinder 15 must correspond to the transport speed of the substrate to form a clean cut in the cutting unit 13, in known from the prior art folders, the circumference of the cutting blade cylinder and the circumference of the grooved cylinder is adapted to the circumference of the plate cylinder , This results in known from the prior art folders a format dependency of the folder.
  • the peripheral speeds of cutting blade cylinder 14 and grooved cylinder 15 correspond approximately to the speed of the printing material, however Before and after the cutting operation of the cutting blade cylinder 14 and the grooved cylinder 15 are driven with a deviating peripheral speed, for this purpose the cutting blade cylinder 14 and the grooved cylinder 15 are accelerated and braked. This will be described below with reference to 3 and 4 in greater detail.
  • FIG. 3 shows Fig. 3 the cutting blade cylinder 14 of the cutting unit 13 of the folding apparatus 10 together with a web-shaped substrate 21.
  • the cutting knife cylinder 14 has a cutting blade 22, which in Fig. 3 is shown in a position in which it has penetrated with a knife tip in the substrate 21 and perpendicular to the substrate 21.
  • the cutting blade cylinder 14 is rotationally driven in the direction of the arrow 23, wherein an angular region 24 visualizes the area of a full revolution of the cutting blade cylinder 14, in which the actual cutting operation takes place.
  • the angle range 24 is defined by the entry of the cutting blade 22 into the printing substrate 21 and the exit of the cutting blade 22 from the printing substrate 21.
  • this angular range 24 ie between the entry of the cutting blade 22 into the printing material 21 and the exit of the cutting blade 22 from the printing material 21, the transverse cutting of the same takes place for separating copies, wherein in this angular range 24 of the cutting blade cylinder 14 is driven at a peripheral speed, which corresponds approximately to the transport speed of the printing substrate.
  • the cutting blade cylinder 14 as well as the grooved cylinder 15 is designed for a medium format of copies to be processed in the folding apparatus 10. Then, if as in the embodiment of Fig. 4 shown to process a larger format than the average format, the cutting blade cylinder 14 must be accelerated before the actual cutting as well as the grooved cylinder 15 such that its peripheral speed during the cutting process corresponds to the transport speed of the printing material. According to Fig. 4 For example, the peripheral speed of the cutter blade cylinder 14 and the grooved cylinder 15 is kept constant during the separation, but after performing the cut, they are then decelerated to maintain the timing of the cutting unit 19 to the format to be processed.
  • each revolution of the cutting knife cylinder 14 and groove cylinder 15 of the cutting unit 13 of the folding apparatus 10 can be subdivided into three angular regions 24, 25 and 26.
  • the angular range 24 which is defined by the entry of the cutting blade 22 into the printing material 21 and by the exit of the cutting blade 22 from the printing material 21, the cutting blade cylinder 14 and the grooved cylinder 15 is driven at a peripheral speed which corresponds approximately to the transport speed of the printing material .
  • an acceleration or deceleration of the cutting blade cylinder 14 and groove cylinder 15 takes place in the angular regions 25 and 26 which adjoin or are in front of the angular region 24, in which case a braking takes place in the angular region 25
  • Angle region 26 an acceleration is performed, and wherein when in the angular range 25 an acceleration takes place in the angular range 26, a deceleration is performed.
  • the deceleration and acceleration of cutting knife cylinder 14 and groove cylinder 15 are each sinusoidal. In contrast, it is also possible to provide a linear deceleration and acceleration of cutting blade cylinder 14 and groove cylinder 15.
  • the peripheral speed of at least the cutting blade cylinder is varied during the cutting process such that upon entry and / or exit of the cutting blade 22 into and / or from the printing substrate 21, the peripheral speed of a tip of the cutting blade 22 protruding from the circumference of the cutting blade cylinder 14, the speed of the substrate corresponds. In this way it can be avoided that the same is deflected during entry and exit of the cutting blade in the printing material 21 and thus adversely affected in its transport.
  • both the cutting blade cylinder 14 and the grooved cylinder 15 of the cutting unit 13 each have a separate drive 27 and 28, which are each coupled via a coupling 29 and brake 30 with the cutting blade 14 and grooved cylinder 15 of the cutting unit 13.
  • Each of the drives 27 and 28 is then operable via a control device such that the cutting blade cylinder 14 and the grooved cylinder 15 can be driven in the manner according to the invention.

Description

Die Erfindung betrifft einen Falzapparat einer Druckmaschine nach dem Oberbegriff des Patentanspruchs 1. Des Weiteren betrifft die Erfindung ein Verfahren zum Betreiben eines Falzapparats nach dem Oberbegriff des Patentanspruchs 5.The invention relates to a folding apparatus of a printing press according to the preamble of claim 1. Furthermore, the invention relates to a method for operating a folding apparatus according to the preamble of patent claim 5.

Falzapparate von Druckmaschinen dienen der Ausbildung von Falzen an bedruckten Bedruckstoffen, wobei bei aus dem Stand der Technik bekannten Falzapparaten ein bahnförmiger Bedruckstoff üblicherweise zuerst durch eine mindestens einen Falztrichter aufweisende erste Längsfalzeinheit geführt wird, um so am bahnförmigen sowie vorzugsweise noch nicht durchtrennten Bedruckstoff einen Längsfalz auszubilden. Ausgehend von der ersten Längsfalzeinheit wird der bahnförmige Bedruckstoff in Richtung auf eine Schneideinheit geführt, die zumindest einen Schneidmesserzylinder und einen mit dem Schneidmesserzylinder zusammenwirkenden Nutenzylinder umfasst. Im Bereich der Schneideinheit werden vom bahnförmigen Bedruckstoff Exemplare durch Querschneiden abgetrennt. Der Schneideinheit ist üblicherweise eine Querfalzeinheit nachgeordnet, die zumindest einen Falzmesserzylinder sowie einen Falzklappenzylinder umfasst. An der Scheideinheit abtrennte Exemplare werden mit Hilfe des Falzmesserzylinders in Richtung auf den Falzklappenzylinder bewegt. Die vom bahnförmigen Bedruckstoff abgetrennten Exemplare, welche vom Falzmesserzylinder in Richtung auf den Falzklappenzylinder bewegt werden, werden unter Ausbildung eines ersten Querfalzes vom Falzmesserzylinder an den Falzklappenzylinder übergeben. Weitere, zweite Querfalze sind zwischen dem Falzklappenzylinder und einem Greiferzylinder ausbildbar, der mit dem Falzklappenzylinder zusammenwirkt. Die so mit einem Längsfalz sowie mit mindestens einem Querfalz versehenen Exemplare gelangen ausgehend von der Querfalzeinheit in den Bereich einer zweiten Längsfalzeinheit, die üblicherweise mehrere Falztische umfasst. Im Bereich der Falztische werden an den bereits vorgefalzten Exemplaren zweite Längsfalze ausgebildet, die parallel zu dem in der ersten Längsfalzeinheit ausgebildeten Längsfalz verlaufen.Folding machines of printing presses serve for the formation of folds on printed substrates, wherein in the case of folding machines known from the prior art, a web-shaped printing stock is usually first passed through a first longitudinal folding unit having at least one former, so as to form a longitudinal fold on the web-shaped and preferably not yet severed printing substrate , Starting from the first longitudinal folding unit, the web-shaped printing material is guided in the direction of a cutting unit, which comprises at least one cutting blade cylinder and a groove cylinder cooperating with the cutting blade cylinder. In the area of the cutting unit, copies of the web-shaped substrate are cut off by cross-cutting. The cutting unit is usually followed by a Querfalzeinheit downstream, comprising at least one folding blade and a jaw cylinder. Copies separated at the separating unit are moved in the direction of the jaw cylinder with the aid of the folding blade cylinder. The separated from the web-shaped substrate copies, which are moved by the folding blade cylinder in the direction of the jaw cylinder, are passed to form a first transverse fold from the folding blade cylinder to the jaw cylinder. Further, second Querfalze can be formed between the jaw cylinder and a gripper cylinder, which cooperates with the jaw cylinder. The copies thus provided with a longitudinal fold and with at least one transverse fold reach, starting from the transverse folding unit, into the region of a second longitudinal folding unit, which usually comprises a plurality of folding tables. In the region of the folding tables, second longitudinal folds are formed on the already pre-folded copies which run parallel to the longitudinal fold formed in the first longitudinal folding unit.

An Stelle der ersten Längsfalzeinheit kann auch ein sogenannter Magazinaufbau vorhanden sein, wobei im Magazinaufbau keine Längsfalzung sondern eine Längstrennung des Bedruckstoffs erfolgt. Weiterhin sind auch Falzapparate bekannt, die über keine Querfalzeinheit verfügen, bei welchen demnach vom Bedruckstoff abgetrennte Exemplare an einem Sammelzylinder sammelbar und unmittelbar der zweiten Längsfalzeinheit zuführbar sind.Instead of the first longitudinal folding unit, a so-called magazine structure may also be present, wherein in the magazine structure no longitudinal folding but longitudinal separation of the printing material takes place. Furthermore, folders are also known, which have no Querfalzeinheit, in which therefore separated from the substrate copies of a collecting cylinder collectable and directly the second Längsfalzeinheit be supplied.

Zwischen der ersten Längsfalzeinheit bzw. dem Magazinaufbau und der Schneideinheit kann eine Querperforationseinheit und/oder eine Längsperforationseinheit angeordnet sein, um den im Bereich der ersten Längsfalzeinheit vorgefalzten oder den im Bereich des Magazinaufbaus in Längsrichtung durchtrennten Bedruckstoff zu perforieren. Die Perforationen unterstützen die Ausbildung von Querfalzen in der Querfalzeinheit und/oder die Ausbildung von Längsfalzen in der zweiten Längsfalzeinheit.A transverse perforation unit and / or a longitudinal perforation unit can be arranged between the first longitudinal folding unit or the magazine assembly and the cutting unit in order to perforate the substrate pre-folded in the region of the first longitudinal folding unit or cut longitudinally in the region of the magazine structure. The perforations assist in the formation of transverse folds in the transverse folding unit and / or the formation of longitudinal folds in the second longitudinal folding unit.

Im Bereich der Schneideinheit, in welcher durch Querschneiden vom bahnförmigen Bedruckstoff Exemplare abgetrennt werden, so wie im Bereich einer gegebenenfalls vorhandenen Querperforationseinheit muss zur Gewährleistung eines sauberen Schnitts bzw. einer sauberen Perforation die Umfangsgeschwindigkeit eines Schneidmesserzylinders bzw. eines Perforationsmesserzylinders sowie eines mit demselben zusammenwirkenden Nutenzylinders der Transportgeschwindigkeit des bahnförmigen Bedruckstoffs entsprechen, wobei die Transportgeschwindigkeit des bahnförmigen Bedruckstoffs vom Umfang des oder jedes Plattenzylinders einer Druckeinheit abhängt, die dem Falzapparat vorgelagert ist. Hierzu werden im Bereich der Schneideinheit der Schneidmesserzylinder sowie der Nutenzylinder umfangsgroß ausgelegt, was bedeutet, dass der Umfang des Schneidmesserzylinders sowie des Nutenzylinders an den Umfang des oder jedes Plattenzylinders angepasst ist.In order to ensure a clean cut or a clean perforation, the circumferential speed of a cutting knife cylinder or a perforation knife cylinder and a groove cylinder cooperating with the same must be separated in the area of the cutting unit in which copies are separated from the web-shaped printing substrate by cross-cutting from the web-shaped printing material Transport speed of the web-shaped substrate correspond, wherein the transport speed of the sheet-like printing material depends on the circumference of the or each plate cylinder of a printing unit, which is upstream of the folder. For this purpose, in the region of the cutting unit, the cutting blade cylinder and the grooved cylinder are designed to be large in circumference, which means that the circumference of the cutting blade cylinder and of the grooved cylinder is adapted to the circumference of the or each plate cylinder.

Hieraus folgt zwangsläufig, dass aus dem Stand der Technik bekannte Falzapparate im Bereich der Schneideinheit sowie gegebenenfalls im Bereich der Querperforationseinheit formatabhängig sind. Sollen demnach an einer Druckmaschine unterschiedliche Formate gedruckt werden, so müssen hierzu dann auch unterschiedliche Falzapparate bereitgehalten werden. Dies erfordert einen hohen Investitionsaufwand.It necessarily follows that folders known from the prior art are format-dependent in the area of the cutting unit and optionally in the area of the transverse perforation unit. If, accordingly, different formats are to be printed on a printing press, then different folders must be kept ready for this purpose. This requires a high capital expenditure.

EP 1 688 381 A1 betrifft einen Falzapparat für eine Rollenrotationsdruckmaschine, mit einem Schneidmesserzylinder, mit einem Falzmesserzylinder und einem Falzklappenzylinder, wobei mit Hilfe des Schneidmesserzylinders von einem bahnförmigen Bedruckstoff Exemplare abtrennbar sind, wobei die abgetrennten Exemplare vom Falzmesserzylinder gehalten und in Richtung auf den Falzklappenzylinder weiterbewegt werden, und wobei in einem Sammelbetrieb des Falzapparats am Falzmesserzylinder mehrere Exemplare derart sammelbar sind, dass mindestens zwei mit Hilfe des Schneidmesserzylinders abgetrennte Exemplare unterschiedlicher Bogenlänge auf dem Falzmesserzylinder in gegenseitiger Überdeckung gebracht und dem Falzklappenzylinder zugeführt werden. Der Schneidmesserzylinder weist mindestens ein ortsfestes Schneidmesser auf, wobei dem Schneidmesserzylinder ein separater Antrieb zugeordnet ist, und wobei der Antrieb im Sammelbetrieb des Falzapparats zur Bereitstellung von zu sammelnden Exemplaren unterschiedlicher Bogenlänge ungleichförmig und im Nicht-Sammelbetrieb des Falzapparats gleichförmig betrieben wird. EP 1 688 381 A1 relates to a folding apparatus for a web-fed rotary printing press, with a cutting blade cylinder, with a folding blade cylinder and a jaw cylinder, with the help of the cutting knife cylinder copies are separable from a web-shaped substrate, the separated copies are held by the folding blade cylinder and further moved in the direction of the jaw cylinder, and wherein a collection operation of the folder on the folding blade several copies are collectable such that at least two separated by means of the cutting blade cylinder copies of different sheet length on the folding blade in mutual overlap and fed to the jaw cylinder. The cutting blade cylinder has at least one stationary cutting blade, wherein the cutting blade cylinder is associated with a separate drive, and wherein the drive is operated uniformly in collective operation of the folder for providing copies of different sheet length to be collected uniformly and non-collective operation of the folder.

Aus EP 1 069 061 A2 ist ein Verfahren zum Schneiden einer Bahn bekannt, welches sich dadurch auszeichnet, dass die Bahn mit einer im Wesentlichen konstanten Geschwindigkeit bewegt wird, die Bahn in Bahnabschnitte gewünschter Länge geschnitten wird, wobei sich ein Schneidzylinder während des Schneidens der Bahn mit einer Schneid-Winkelgeschwindigkeit dreht, die einer der Geschwindigkeit der Bahn im Wesentlichen angepassten Umfangsgeschwindigkeit des Schneidzylinders entspricht, und dass die Winkelgeschwindigkeit des Schneidzylinders nach dem Schneiden in Abhängigkeit von der gewünschten Länge der Bahnabschnitte geändert wird.Out EP 1 069 061 A2 For example, there is known a method of cutting a web which is characterized in that the web is moved at a substantially constant speed, the web is cut into web portions of desired length, a cutting cylinder rotating at a cutting angular velocity during cutting of the web which corresponds to a peripheral speed of the cutting cylinder substantially adapted to the speed of the web, and that the angular velocity of the cutting cylinder after cutting is changed in dependence on the desired length of the web sections.

Aus EP 0 257 390 A1 , WO 2005/108262 A1 , EP 1 264 689 A2 und DE 42 41 810 A1 sind Falzapparate mit Schneideinrichtungen bekannt.Out EP 0 257 390 A1 . WO 2005/108262 A1 . EP 1 264 689 A2 and DE 42 41 810 A1 Folders are known with cutters.

Hiervon ausgehend liegt der vorliegenden Erfindung die Aufgabe zugrunde, einen verbesserten formatvariablen Falzapparat einer Druckmaschine und ein Verfahren zum Betreiben desselben zu schaffen. Diese Aufgabe wird durch einen Falzapparat gemäß Anspruch 1 gelöst. Hierdurch kann vermieden werden, dass das Schneidmesser beim Eintritt und/oder Ausstritt den Bedruckstoff auslenkt und den Transport derselben beeinträchtigt.Proceeding from this, the object of the present invention is to provide an improved format-variable folding apparatus of a printing press and a method for operating the same. This object is achieved by a folding apparatus according to claim 1. In this way it can be avoided that the cutting blade deflects the printing material upon entry and / or ejection and impairs the transport of the same.

Dann, wenn der Falzapparat eine Querperforationseinheit umfasst, können die Zylinder der Querperforationseinheit analog zu den Zylindern der Schneideinheit ausgelegt sein.Then, when the folder comprises a transverse perforation unit, the cylinders of the transverse perforation unit may be designed analogous to the cylinders of the cutting unit.

Das erfindungsgemäße Verfahren zum Betreiben eines Falzapparats ist im unabhängigen Anspruch 5 definiert.The inventive method for operating a folding apparatus is defined in independent claim 5.

Bevorzugte Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen und der nachfolgenden Beschreibung. Ein Ausführungsbeispiel der Erfindung wird, ohne hierauf beschränkt zu sein, an Hand der Zeichnung näher erläutert. Dabei zeigt:

Fig. 1:
eine schematisierte Darstellung eines erfindungsgemäßen Falzapparats einer Druckmaschine;
Fig. 2:
einen Ausschnitt aus dem Falzapparat der Fig. 1 im Bereich einer Schneideinheit;
Fig. 3:
ein Detail der Schneideinheit im Bereich des Schneidmesserzylinders; und
Fig. 4:
ein Diagramm zur weiteren Verdeutlichung der Erfindung.
Preferred embodiments of the invention will become apparent from the dependent claims and the description below. An embodiment of the invention will be described, without being limited thereto, with reference to the drawing. Showing:
Fig. 1:
a schematic representation of a folding apparatus according to the invention of a printing press;
Fig. 2:
a section of the folder of Fig. 1 in the area of a cutting unit;
3:
a detail of the cutting unit in the region of the cutting blade cylinder; and
4:
a diagram for further illustrating the invention.

Fig. 1 zeigt eine mögliche Ausführungsform eines erfindungsgemäßen Falzapparats 10 einer Druckmaschine, wobei der in Fig. 1 dargestellte Falzapparat 10 eine einen Falztrichter 11 umfassende erste Längsfalzeinheit 12 aufweist, die dem Ausbilden eines ersten Längsfalzes am bahnförmigen, noch nicht durchtrennten Bedruckstoff dient. Der ersten Längsfalzeinheit 12 ist eine Schneideinheit 13 nachgeordnet, die dem Abtrennen von Exemplaren vom bahnförmigen Bedruckstoff durch Querschneiden dient. Die Schneideinheit 13 umfasst einen Schneidmesserzylinder 14 sowie einen mit dem Schneidmesserzylinder 14 zusammenwirkenden Nutenzylinder 15. Im Bereich der Schneideinheit 13 vom bahnförmigen Bedruckstoff abgetrennte Exemplare werden an einem Sammelzylinder 16 des Falzapparats 10 gesammelt und ausgehend vom Sammelzylinder 16 einer zweiten Längsfalzeinheit 17 zugeführt, im Bereich derer an den abgetrennten Exemplaren zweite Längsfalze ausbildbar sind, die parallel zu den in der ersten Längsfalzeinheit 12 ausgebildeten ersten Längsfalzen verlaufen. Im Ausführungsbeispiel der Fig. 1 ist zwischen der ersten Längsfalzeinheit 11 und der Schneideinheit 13 eine Längsperforationseinheit 18 angeordnet, die der Ausbildung von Längsperforationen am Bedruckstoff dient, wobei die Längsperforationen die Ausbildung der zweiten Längsfalze im Bereich der zweiten Längsfalzeinheit 17 unterstützen. Zum Transport des Bedruckstoffs bzw. der Exemplare durch die Falzeinheit 10 dienen Zugwalzen 19. Mit Hilfe einer Beschleunigungseinheit 20 sind vom Bedruckstoff abgetrennte Exemplare auf die Umfangsgeschwindigkeit des Sammelzylinders 16 beschleunigbar. Fig. 1 shows a possible embodiment of a folding apparatus 10 according to the invention of a printing press, wherein the in Fig. 1 has shown a folding former 11 comprehensive first longitudinal folding unit 12, which serves to form a first Längsfalzes on web-like, not yet severed substrate. The first longitudinal folding unit 12 is followed by a cutting unit 13, which serves for the separation of copies of the web-shaped substrate by cross-cutting. The cutting unit 13 comprises a cutting blade cylinder 14 and cooperating with the cutting blade cylinder 14 groove cylinder 15 in the cutting unit 13 separated from the sheet substrate copies are collected on a collecting cylinder 16 of the folder 10 and fed from the collecting cylinder 16 a second Längsfalzeinheit 17, in the area of those on the separated copies second longitudinal folds can be formed, which run parallel to the first longitudinal fold unit 12 formed in the first longitudinal folds. In the embodiment of Fig. 1 between the first longitudinal folding unit 11 and the cutting unit 13, a longitudinal perforation unit 18 is arranged which serves to form longitudinal perforations on the printing substrate, the longitudinal perforations supporting the formation of the second longitudinal folds in the region of the second longitudinal folding unit 17. With the help of an acceleration unit 20 are separated from the substrate copies on the peripheral speed of the collecting cylinder 16 can be accelerated to transport the substrate or the copies by the folding unit 10.

Das in Fig. 1 dargestellte Ausführungsbeispiel eines Falzapparats 10 dient demnach lediglich der Ausbildung von Längsfalzen am Bedruckstoff. Die Erfindung soll jedoch nicht auf diese konkrete Ausführungsform eines Falzapparats beschränkt sein, vielmehr kann die Erfindung auch an Falzapparaten Verwendung finden, die zusätzlich über mindestens eine Querfalzeinheit sowie gegebenenfalls eine Querperforationseinheit verfügen.This in Fig. 1 illustrated embodiment of a folding apparatus 10 therefore serves only the formation of longitudinal folds on the substrate. However, the invention should not be limited to this specific embodiment of a folder, but the invention can also be used on folders, which additionally have at least one Querfalzeinheit and optionally a Querperforationseinheit.

Die Transportgeschwindigkeit des Bedruckstoffs durch den Falzapparat 10 im Bereich der ersten Längsfalzeinheit 12 sowie der Schneideinheit 13 wird durch den Umfang von Plattenzylindern einer Druckeinheit bestimmt, die dem in Fig. 1 dargestellten Falzapparat 10 vorgelagert ist. Da zur Ausbildung eines sauberen Schnitts im Bereich der Schneideinheit 13 die Umfangsgeschwindigkeiten von Schneidmesserzylinder 14 und Nutenzylinder 15 der Transportgeschwindigkeit des Bedruckstoffs entsprechen müssen, ist bei aus dem Stand der Technik bekannten Falzapparaten der Umfang des Schneidmesserzylinders sowie der Umfang des Nutenzylinders an den Umfang der Plattenzylinder angepasst. Hierdurch ergibt sich bei aus dem Stand der Technik bekannten Falzapparaten eine Formatabhängigkeit des Falzapparats.The transport speed of the printing material through the folding apparatus 10 in the region of the first longitudinal folding unit 12 and the cutting unit 13 is determined by the circumference of plate cylinders of a printing unit, which corresponds to the in Fig. 1 shown folding apparatus 10 is upstream. Since the peripheral speeds of the cutting blade cylinder 14 and grooved cylinder 15 must correspond to the transport speed of the substrate to form a clean cut in the cutting unit 13, in known from the prior art folders, the circumference of the cutting blade cylinder and the circumference of the grooved cylinder is adapted to the circumference of the plate cylinder , This results in known from the prior art folders a format dependency of the folder.

Im Sinne der hier vorliegenden Erfindung sind zur Bereitstellung bzw. Gewährleistung einer Formatvariabilität der Schneidmesserzylinder 14 sowie der Nutenzylinder 15 der Schneideinheit 13 derart antreibbar, dass während des eigentlichen Schneidvorgangs die Umfangsgeschwindigkeiten von Schneidmesserzylinder 14 und Nutenzylinder 15 in etwa der Geschwindigkeit des Bedruckstoffs entsprechen, dass jedoch vor und nach dem Schneidvorgang der Schneidmesserzylinder 14 sowie der Nutenzylinder 15 mit einer hiervon abweichenden Umfangsgeschwindigkeit antreibbar sind, wobei hierzu der Schneidmesserzylinder 14 und der Nutenzylinder 15 beschleunigbar und abbremsbar sind. Hierauf wird nachfolgend unter Bezugnahme auf Fig. 3 und 4 in größerem Detail eingegangen.For the purposes of the present invention, to provide or ensure a format variability of the cutting blade cylinder 14 and the grooved cylinder 15 of the cutting unit 13 can be driven such that during the actual cutting process, the peripheral speeds of cutting blade cylinder 14 and grooved cylinder 15 correspond approximately to the speed of the printing material, however Before and after the cutting operation of the cutting blade cylinder 14 and the grooved cylinder 15 are driven with a deviating peripheral speed, for this purpose the cutting blade cylinder 14 and the grooved cylinder 15 are accelerated and braked. This will be described below with reference to 3 and 4 in greater detail.

So zeigt Fig. 3 den Schneidmesserzylinder 14 der Schneideinheit 13 des Falzapparats 10 zusammen mit einem bahnförmigen Bedruckstoff 21. Gemäß Fig. 3 verfügt der Schneidmesserzylinder 14 über ein Schneidmesser 22, welches in Fig. 3 in einer Position gezeigt ist, in der es mit einer Messerspitze in den Bedruckstoff 21 eingedrungen ist und senkrecht zum Bedruckstoff 21 verläuft. Der Schneidmesserzylinder 14 wird in Richtung des Pfeils 23 drehend angetrieben, wobei ein Winkelbereich 24 den Bereich einer vollen Umdrehung des Schneidmesserzylinders 14 visualisiert, in welchem der eigentliche Schneidvorgang erfolgt.So shows Fig. 3 the cutting blade cylinder 14 of the cutting unit 13 of the folding apparatus 10 together with a web-shaped substrate 21. According to Fig. 3 the cutting knife cylinder 14 has a cutting blade 22, which in Fig. 3 is shown in a position in which it has penetrated with a knife tip in the substrate 21 and perpendicular to the substrate 21. The cutting blade cylinder 14 is rotationally driven in the direction of the arrow 23, wherein an angular region 24 visualizes the area of a full revolution of the cutting blade cylinder 14, in which the actual cutting operation takes place.

Der Winkelbereich 24 ist durch den Eintritt des Schneidmessers 22 in den Bedruckstoff 21 und den Austritt des Schneidmessers 22 aus dem Bedruckstoff 21 definiert. In diesem Winkelbereich 24, also zwischen dem Eintritt des Schneidmessers 22 in den Bedruckstoff 21 und dem Austritt des Schneidmessers 22 aus dem Bedruckstoff 21, erfolgt das Querschneiden desselben zum Abtrennen von Exemplaren, wobei in diesem Winkelbereich 24 der Schneidmesserzylinder 14 mit einer Umfangsgeschwindigkeit angetrieben wird, die in etwa der Transportgeschwindigkeit des Bedruckstoffs entspricht.The angle range 24 is defined by the entry of the cutting blade 22 into the printing substrate 21 and the exit of the cutting blade 22 from the printing substrate 21. In this angular range 24, ie between the entry of the cutting blade 22 into the printing material 21 and the exit of the cutting blade 22 from the printing material 21, the transverse cutting of the same takes place for separating copies, wherein in this angular range 24 of the cutting blade cylinder 14 is driven at a peripheral speed, which corresponds approximately to the transport speed of the printing substrate.

Außerhalb des Winkelbereichs 24 wird der Schneidmesserzylinder 14 beschleunigt und abgebremst, wobei im Ausführungsbeispiel der Fig. 3 und 4 in einem sich in Drehrichtung (Pfeil 23) des Schneidmesserzylinders 14 gesehen an den Winkelbereich 24 anschließenden Winkelbereich 25 der Schneidmesserzylinder 14 abgebremst wird, wohingegen in einem in Drehrichtung (Pfeil 23) gesehen dem Winkelabschnitt 24 vorgelagerten Winkelabschnitt 26 der Schneidmesserzylinder 14 beschleunigt wird. Dies kann am besten Fig. 4 entnommen werden, wobei in Fig. 4 auf der horizontal verlaufenden Achse der Drehwinkel α des Schneidmesserzylinders 14 und auf der vertikal verlaufenden Achse die Umfangsgeschwindigkeit v desselben aufgetragen ist.Outside the angular range 24 of the cutting blade cylinder 14 is accelerated and decelerated, in the embodiment of the 3 and 4 seen in the direction of rotation (arrow 23) of the cutting blade 14 at the angular range 24 subsequent angular range 25 of the cutting blade 14 is decelerated, whereas in an angular direction (arrow 23) seen the angular portion 24 upstream angular portion 26 of the cutting blade 14 is accelerated. This is best Fig. 4 be taken, in Fig. 4 on the horizontal axis of the rotation angle α of the cutting blade cylinder 14 and on the vertical axis, the peripheral speed v thereof is plotted.

Beim erfindungsgemäßen Falzapparat 10 ist der Schneidmesserzylinder 14 ebenso wie der Nutenzylinder 15 auf ein mittleres Format von im Falzapparat 10 zu verarbeitenden Exemplaren ausgelegt. Dann, wenn wie im Ausführungsbeispiel der Fig. 4 gezeigt, ein größeres Format als das mittlere Format zu verarbeiten ist, muss der Schneidmesserzylinder 14 ebenso wie der Nutenzylinder 15 vor dem eigentlichen Schneiden derart beschleunigt werden, dass dessen Umfangsgeschwindigkeit während des Scheidvorgangs der Transportgeschwindigkeit des Bedruckstoffs entspricht. Gemäß Fig. 4 wird die Umfangsgeschwindigkeit des Schneidmesserzylinders 14 sowie des Nutenzylinders 15 während des Scheidens konstant gehalten, nach Ausführung des Schnitts hingegen werden dann dieselben abgebremst, um die Taktung der Schneideinheit 19 an das zu verarbeitende Format beizubehalten.In the folding apparatus 10 according to the invention, the cutting blade cylinder 14 as well as the grooved cylinder 15 is designed for a medium format of copies to be processed in the folding apparatus 10. Then, if as in the embodiment of Fig. 4 shown to process a larger format than the average format, the cutting blade cylinder 14 must be accelerated before the actual cutting as well as the grooved cylinder 15 such that its peripheral speed during the cutting process corresponds to the transport speed of the printing material. According to Fig. 4 For example, the peripheral speed of the cutter blade cylinder 14 and the grooved cylinder 15 is kept constant during the separation, but after performing the cut, they are then decelerated to maintain the timing of the cutting unit 19 to the format to be processed.

Soll hingegen in dem Falzapparat 10 ein kleineres Format verarbeitet werden, so kehren sich die obigen Zusammenhänge um, was bedeutet, dass vor dem eigentlichen Schneiden der Schneidmesserzylinder 14 sowie der Nutenzylinder 15 verlangsamt werden, und dass nach dem Schneiden dieselben beschleunigt werden.If, on the other hand, a smaller format is to be processed in the folding apparatus 10, the above relationships are reversed, which means that the cutting knife cylinders 14 and the groove cylinder 15 are slowed down before the actual cutting and that the same speeds are accelerated after cutting.

Aus den obigen Zusammenhängen folgt demnach, dass jede Umdrehung des Schneidmesserzylinders 14 sowie Nutenzylinders 15 der Schneideinheit 13 des Falzapparats 10 in drei Winkelbereiche 24, 25 und 26 untergliedert werden kann. Im Winkelbereich 24, der durch den Eintritt des Schneidmessers 22 in den Bedruckstoff 21 und durch den Austritt des Schneidmessers 22 aus dem Bedruckstoff 21 definiert ist, wird der Schneidmesserzylinder 14 sowie der Nutenzylinder 15 mit einer Umfangsgeschwindigkeit angetrieben, die in etwa der Transportgeschwindigkeit des Bedruckstoffs entspricht. In den Winkelbereichen 25 und 26, die sich an den Winkelbereich 24 anschließen bzw. demselben vorgelagert sind, erfolgt je nach zu verarbeitendem Format eine Beschleunigung oder ein Abbremsen des Schneidmesserzylinders 14 sowie Nutenzylinders 15, wobei dann, wenn im Winkelbereich 25 ein Abbremsen erfolgt, im Winkelbereich 26 eine Beschleunigung durchgeführt wird, und wobei dann, wenn im Winkelbereich 25 eine Beschleunigung erfolgt, im Winkelbereich 26 ein Abbremsen durchgeführt wird.Accordingly, it follows from the above relationships that each revolution of the cutting knife cylinder 14 and groove cylinder 15 of the cutting unit 13 of the folding apparatus 10 can be subdivided into three angular regions 24, 25 and 26. In the angular range 24, which is defined by the entry of the cutting blade 22 into the printing material 21 and by the exit of the cutting blade 22 from the printing material 21, the cutting blade cylinder 14 and the grooved cylinder 15 is driven at a peripheral speed which corresponds approximately to the transport speed of the printing material , Depending on the format to be processed, an acceleration or deceleration of the cutting blade cylinder 14 and groove cylinder 15 takes place in the angular regions 25 and 26 which adjoin or are in front of the angular region 24, in which case a braking takes place in the angular region 25 Angle region 26 an acceleration is performed, and wherein when in the angular range 25 an acceleration takes place in the angular range 26, a deceleration is performed.

Im Ausführungsbeispiel der Fig. 4 erfolgt die Abbremsung sowie Beschleunigung von Schneidmesserzylinders 14 sowie Nutenzylinders 15 jeweils sinusförmig. Im Unterschied hierzu ist es auch möglich, eine lineare Abbremsung sowie Beschleunigung von Schneidmesserzylinders 14 sowie Nutenzylinders 15 vorzusehen.In the embodiment of Fig. 4 the deceleration and acceleration of cutting knife cylinder 14 and groove cylinder 15 are each sinusoidal. In contrast, it is also possible to provide a linear deceleration and acceleration of cutting blade cylinder 14 and groove cylinder 15.

Wie bereits erwähnt, wird gemäß Fig. 4 die Umfangsgeschwindigkeit des Schneidmesserzylinders 14 sowie die Umfangsgeschwindigkeit des Nutenzylinders 15 während des Schneidvorgangs im Winkelbereich 24 konstant gehalten.As already mentioned, according to Fig. 4 the peripheral speed of the cutting blade cylinder 14 and the peripheral speed of the grooved cylinder 15 during the cutting process in the angular range 24 kept constant.

Erfindungsgemäß wird die Umfangsgeschwindigkeit zumindest des Schneidmesserzylinders während des Schneidvorgangs derart variiert, dass beim Eintritt und/oder beim Austritt des Schneidmessers 22 in den und/oder aus dem Bedruckstoff 21 die Umfangsgeschwindigkeit einer Spitze des Schneidmessers 22, die gegenüber dem Umfang des Schneidmesserzylinders 14 vorsteht, der Geschwindigkeit des Bedruckstoffs entspricht. Hierdurch kann vermieden werden, dass beim Eintritt sowie beim Austritt des Schneidmessers in den Bedruckstoff 21 derselbe ausgelenkt und damit in seinem Transport beeinträchtigt wird.According to the invention, the peripheral speed of at least the cutting blade cylinder is varied during the cutting process such that upon entry and / or exit of the cutting blade 22 into and / or from the printing substrate 21, the peripheral speed of a tip of the cutting blade 22 protruding from the circumference of the cutting blade cylinder 14, the speed of the substrate corresponds. In this way it can be avoided that the same is deflected during entry and exit of the cutting blade in the printing material 21 and thus adversely affected in its transport.

Im gezeigten Ausführungsbeispiel (siehe Fig. 2) ist sowohl dem Schneidmesserzylinder 14 als auch dem Nutenzylinder 15 der Schneideinheit 13 jeweils ein separater Antrieb 27 bzw. 28 zugeordnet, die jeweils über eine Kupplung 29 sowie Bremse 30 mit dem Schneidmesserzylinder 14 bzw. Nutenzylinder 15 der Schneideinheit 13 gekoppelt sind. Jeder der Antriebe 27 und 28 ist dann über eine Steuerungseinrichtung derart betreibbar, dass der Schneidmesserzylinder 14 sowie der Nutenzylinder 15 auf die erfindungsgemäße Art und Weise antreibbar sind. Im Unterschied hierzu ist es auch möglich, den Schneidmesserzylinder sowie den Nutenzylinder über einen gemeinsamen Antrieb anzutreiben. Dies kann derart erfolgen, dass lediglich dem Schneidmesserzylinder ein Antrieb zugeordnet ist, wohingegen der Nutenzylinder über eine Verzahnung vom Schneidmesserzylinder aus angetrieben wird. Aufgrund der großen zu beschleunigenden sowie abzubremsenden Massen ist jedoch die gezeigte Variante, in welcher dem Schneidmesserzylinder 14 sowie dem Nutenzylinder 15 separate Antriebe zugeordnet sind, bevorzugt.In the embodiment shown (see Fig. 2 ) is assigned both the cutting blade cylinder 14 and the grooved cylinder 15 of the cutting unit 13 each have a separate drive 27 and 28, which are each coupled via a coupling 29 and brake 30 with the cutting blade 14 and grooved cylinder 15 of the cutting unit 13. Each of the drives 27 and 28 is then operable via a control device such that the cutting blade cylinder 14 and the grooved cylinder 15 can be driven in the manner according to the invention. In contrast, it is also possible to drive the cutting blade cylinder and the grooved cylinder via a common drive. This can be done in such a way that only a drive is assigned to the cutting blade cylinder, whereas the grooved cylinder is driven by a toothing from the cutting blade cylinder. Due to the large masses to be accelerated and braked, however, the variant shown, in which the cutting blade cylinder 14 and the grooved cylinder 15 are assigned separate drives, is preferred.

Die obigen Details, die im Zusammenhang mit der Schneideinheit des Falzapparats beschrieben wurden, sind analog auf eine Querperforationseinheit eines Falzapparats übertragbar. In diesem Fall sind dann ein Perforationsmesserzylinder sowie ein mit dem Perforationsmesserzylinder zusammenwirkender Nutenzylinder auf die obige Art und Weise antreibbar.The above details, described in connection with the cutting unit of the folder, are analogously transferable to a transverse perforation unit of a folder. In this case, then a perforation cutter cylinder and cooperating with the Perforationsmesserzylinder groove cylinder can be driven in the above manner.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

1010
Falzapparatfolding
1111
Falztrichterformers
1212
erste Längsfalzeinheitfirst longitudinal folding unit
1313
Schneideinheitcutting unit
1414
SchneidmessezylinderCutter blade cylinder
1515
Nutenzylindergrooved cylinder
1616
Sammelzylindercollecting cylinder
1717
zweite Längsfalzeinheitsecond longitudinal folding unit
1818
LängsperforationseinheitLängsperforationseinheit
1919
Zugwalzendrawing rollers
2020
Beschleunigungseinheitacceleration unit
2121
Bedruckstoffsubstrate
2222
ScheidmesserScheid knife
2323
Pfeilarrow
2424
Winkelbereichangle range
2525
Winkelbereichangle range
2626
Winkelbereichangle range
2727
Antriebdrive
2828
Antriebdrive
2929
Kupplungclutch
3030
Bremsebrake

Claims (5)

  1. A folding apparatus (10) of a printing press, in particular of a rotary printing press, comprising a first longitudinal folding unit (11) or a magazine structure, comprising a cutting unit (13) arranged downstream from the first longitudinal folding unit (11) or from the magazine structure, viewed in transport direction of a printing material, so as to sever copies from the printing material by means of cross cutting, and comprising a cross folding unit and/or second longitudinal folding unit (17) arranged downstream from the cutting unit (13), viewed in transport direction, wherein the cutting unit (13) has at least one cutting blade cylinder (14) and a groove cylinder (15), which cooperates with the cutting blade cylinder (14), wherein, to ensure a format variability, the cutting blade cylinder (14) and the groove cylinder (15) of the cutting unit (13) can be driven in such a manner that the circumferential speeds of cutting blade cylinder (14) and groove cylinder (15) correspond approximately to the speed of the printing material during the cutting process, and in that the cutting blade cylinder (14) and groove cylinder (15) can be accelerated and decelerated prior to and after the cutting process, characterized in that the cutting blade cylinder (14) and the groove cylinder (15) can be driven in such a manner that the circumferential speed of at least the cutting blade cylinder (14) can be varied in such a manner during the cutting process that the circumferential speed of a tip of the cutting blade (22) corresponds to the speed of the printing material when the cutting blade cylinder (22) enters and/or exits into and/or out of the printing material.
  2. The folding apparatus according to claim 1, characterized in that a separate drive (27, 28) is in each case assigned to the cutting blade cylinder (14) and the groove cylinder (15) of the cutting unit (13).
  3. The folding apparatus according to claim 1, characterized in that a common drive is assigned to the cutting blade cylinder and the groove cylinder.
  4. The folding apparatus according to one or a plurality of claims 1 to 3, characterized in that the cutting blade cylinder (14) and the groove cylinder (15) can be accelerated and decelerated in a sinusoidal or linear manner.
  5. A method for operating a folding apparatus (10) of a printing press, in particular of a rotary printing press, which has a first longitudinal folding unit (12) or a magazine structure, a cutting unit (13) arranged downstream from the first longitudinal folding unit (12) or from the magazine structure, viewed in transport direction of a printing material (21), and a cross folding unit and/or second longitudinal folding unit (17) arranged downstream from the cutting unit (13), viewed in transport direction of the printing material (21), wherein, to ensure a format variability, a cutting blade cylinder (14) and a groove cylinder (15) of the cutting unit (13) are driven in such a manner that the circumferential speeds of cutting blade cylinder (14) and groove cylinder (15) correspond approximately to the speed of the printing material (21) during the cutting process, and in that the cutting blade cylinder (14) and groove cylinder (15) are accelerated and decelerated prior to and after the cutting process, characterized in that the cutting blade cylinder (14) and the groove cylinder (15) are driven in such a manner that the circumferential speed of at least the cutting blade cylinder (14) are varied in such a manner during the cutting process that the circumferential speed of a tip of the cutting blade (22) corresponds to the speed of the printing material when the cutting blade (22) enters and/or exits into and/or out of the printing material.
EP07006143.7A 2006-03-28 2007-03-26 Folding apparatus of a printing press and method for operating the same Not-in-force EP1839858B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006014218A DE102006014218A1 (en) 2006-03-28 2006-03-28 Folding apparatus of a printing machine and method for operating the same

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EP1839858A2 EP1839858A2 (en) 2007-10-03
EP1839858A3 EP1839858A3 (en) 2011-03-30
EP1839858B1 true EP1839858B1 (en) 2017-01-18

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011116466A1 (en) * 2011-10-20 2013-04-25 Manroland Web Systems Gmbh Device and method for folding a printing material web
DE102015107935A1 (en) 2015-05-20 2016-11-24 Manroland Web Systems Gmbh Method and device for producing a printed product
DE102015107915A1 (en) 2015-05-20 2016-11-24 Manroland Web Systems Gmbh Method and device for producing a printed product

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE178300C (en) *
DE174775C (en) *
NL287402A (en) * 1962-01-03 1900-01-01
DE2812849C2 (en) * 1978-03-23 1985-01-24 Jagenberg-Werke AG, 4000 Düsseldorf Method for controlling a cross cutter and digital control device for carrying out the method
DE3608111C1 (en) * 1986-03-12 1987-10-01 Bielomatik Leuze & Co Sheeter for web materials
DE3628411A1 (en) * 1986-08-21 1988-02-25 Frankenthal Ag Albert FOLDING APPARATUS
DE4241810C2 (en) * 1992-12-11 2001-01-04 Heidelberger Druckmasch Ag Variable-format combination folder
US6360640B1 (en) * 1999-07-13 2002-03-26 Heidelberger Druckmaschinen Variable velocity cutting cylinders
DE10128122A1 (en) * 2001-06-09 2002-12-12 Roland Man Druckmasch Drive for a folder
DE10213978A1 (en) * 2002-03-28 2003-10-09 Roland Man Druckmasch Process for cross cutting a running web
DE10245322A1 (en) * 2002-09-27 2004-04-08 Man Roland Druckmaschinen Ag Process for cross cutting a web
EP1708945B1 (en) * 2004-01-31 2012-07-04 Koenig & Bauer AG Printing machine having at least one printing unit for imprinting a web of material to be imprinted by offset printing in a variable cut length, and a folder
DE102005002683A1 (en) * 2005-01-20 2006-08-03 Man Roland Druckmaschinen Ag Folding appliance for rotary roller press machine has separate drive assigned to cutting knife cylinder whereby drive is operated in collection area of folding appliance for provision of collecting copies of different non-uniform arc length

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Title
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EP1839858A3 (en) 2011-03-30
DE102006014218A1 (en) 2007-10-04

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