EP0744368B1 - Cutting device - Google Patents

Cutting device Download PDF

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Publication number
EP0744368B1
EP0744368B1 EP96107639A EP96107639A EP0744368B1 EP 0744368 B1 EP0744368 B1 EP 0744368B1 EP 96107639 A EP96107639 A EP 96107639A EP 96107639 A EP96107639 A EP 96107639A EP 0744368 B1 EP0744368 B1 EP 0744368B1
Authority
EP
European Patent Office
Prior art keywords
cutting
cylinder
carrier
cylinders
knife
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96107639A
Other languages
German (de)
French (fr)
Other versions
EP0744368A3 (en
EP0744368A2 (en
Inventor
Bernd Anton Hillebrand
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.)
Koenig and Bauer AG
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Koenig and Bauer AG
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Publication date
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Publication of EP0744368A2 publication Critical patent/EP0744368A2/en
Publication of EP0744368A3 publication Critical patent/EP0744368A3/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H45/00—Folding thin material
    • B65H45/12—Folding articles or webs with application of pressure to define or form crease lines
    • B65H45/28—Folding in combination with cutting
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/56—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter
    • B26D1/62—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is rotating about an axis parallel to the line of cut, e.g. mounted on a rotary cylinder
    • B26D1/626—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which travels with the work otherwise than in the direction of the cut, i.e. flying cutter and is rotating about an axis parallel to the line of cut, e.g. mounted on a rotary cylinder for thin material, e.g. for sheets, strips or the like
    • 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
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D2007/2671—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member for cutters moving in a planetary motion on their support, e.g. so-called "Ferris Wheels"
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4708—With means to render cutter pass[es] ineffective
    • Y10T83/4711—With means to produce "mis-cut"
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4766—Orbital motion of cutting blade
    • Y10T83/4795—Rotary tool
    • Y10T83/4812—Compound movement of tool during tool cycle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/465—Cutting motion of tool has component in direction of moving work
    • Y10T83/4766—Orbital motion of cutting blade
    • Y10T83/4795—Rotary tool
    • Y10T83/483—With cooperating rotary cutter or backup

Definitions

  • the invention relates to a cutting device for Cross cutting of running webs in products with changeable lengths especially in one Rotary printing machine subordinate folder according the preamble of claim 1.
  • EP 03 64 864 A2 describes a generic one Cutting device in one of "collecting" "Not collecting” switchable folder one Rotary printing press.
  • one works with two Cutting cylinder provided with a three Collecting cylinder having cutting strips together. While cutting a web into products, dips the respective cutting knife into the corresponding one Cutting bar. The cutter can on different product lengths can be set and then Generate alternate product lengths.
  • a disadvantage of this cutting device is that the Cutting blades in the cutting strips cycloid-like Carry out movements, whereby the z. B. from elastic Plastic existing cutting strips a high Subject to wear. The cutting device is for Difficult to adjust to different product lengths built up.
  • a disadvantage of this cutting device is that too the cutting bars are pivoted.
  • the invention has for its object a Cutting device for cross cutting of running Signatures with changeable lengths create.
  • cutting knives can be used in the cutting device according to the invention, the knife edge of which is not equidistant from the axis of rotation of the cutting cylinder, such as. B. wedge-shaped, V-shaped or arrow-shaped cutting knife.
  • the result of this is that the very large cutting forces which have so far occurred abruptly are substantially reduced. This makes it possible to cut thicker webs or more layers of webs and to achieve higher production speeds.
  • the load on the cutting device caused by vibrations is reduced.
  • the cutting device according to the invention is adapted to products of different lengths by means of simple, remote-controlled drives, so that an automatic changeover, for example from non-collecting operation to collecting operation of the cutting and collecting device, is possible.
  • the cutting device according to the invention is in the Drawing shown and will be described in more detail below described.
  • one Folders of a rotary printing press are one Cutting cylinder carrier 3 and a collecting cylinder 4 around their parallel axes of rotation 6, 7 rotated in the same direction.
  • the Cutting cylinder carrier 3 rotates during one Cutting process simultaneously to the collecting cylinder 4.
  • Die Cutting cylinders 8, 9 rotate during one Cutting process opposite to the collecting cylinder 4.
  • the collecting cylinder 4 serves as a counter cylinder for the cutting cylinders 8, 9 and is therefore provided with cutting bars 16 which are fixed to the cylinder.
  • the cutting cylinders 8, 9 are driven by means of a planetary gear transmission starting from a main drive gear train.
  • With the intermediate gear 21 is a gear 23 with a number of teeth z23, z. B.
  • a web 28, e.g. B. paper web, film web or textile web is guided on the collecting cylinder 4 and cut by means of the cutting knife 13 and cutting strips 16 in signatures.
  • the cutting cylinders 8, 9 and thus the cutting knives 13 rotate about their respective axes of rotation 11, 12.
  • This rotary movement is carried out by means of the drive described in such a way that the respective cutting knife 13 involved in the current cutting process from the beginning to the end of the cutting process, ie from impact the web 28 to take off from the web 28, performs an approximately radial movement aligned with the axis of rotation 7 of the collecting cylinder 4.
  • This approximately radial movement has a small, parallel offset from the ideal radial direction, this offset being able to be minimized by varying the radii r3, r4 and r13.
  • Both the cutting knife 13 in question and the corresponding cutting bar 14 move at approximately web speed.
  • the cutting knife 13 moves radially towards the collecting cylinder 4, cuts through the web 28 and penetrates into the cutting bar 16.
  • the axes of rotation 6, 7, 11 and 12 and the cutting knife 13 lie on a common straight line.
  • a radial speed of the cutting knife 13 is zero and the excavation movement of the cutting knife 13 begins.
  • the excavating movement of the cutting knife 13 also takes place radially with respect to the collecting cylinder 4.
  • the cutting cylinders 8, 9 are mounted axially displaceably on the cutting cylinder carrier 3.
  • a respective cylinder e.g. B. a pneumatic cylinder 29, 31, which are arranged on the cutting cylinder carrier 3 stationary.
  • the pressure medium required is supplied to the pneumatic cylinders 29, 31, for example by means of a rotary inlet 32 which is fixed centrally on the cutting cylinder carrier 3.
  • the pneumatic cylinders 29, 31 of the cutting cylinders 8, 9 are switched such that in the non-collecting position the first cutting cylinder 8 is in its starting position facing the first side frame 1 and the second cutting cylinder 9 is in its starting position facing the second side frame 2.
  • the planetary gears 27 of the opposing cutting cylinders 8, 9 are arranged with respect to the cutting knives 13 on the cutting cylinders 8, 9 such that in the non-collecting position of the cutting cylinders 8, 9 and the collecting cylinder 4, the cuts of the two cutting cylinders 8, 9 are offset by exactly 180 ° to one another be carried out.
  • the two cutting cylinders 8, 9 are brought into their collecting position.
  • the pneumatic cylinders 29, 31 are actuated, whereby the first cutting cylinder 8 from the starting position facing the first side frame 1 into an end position facing the second side frame 2 and the second cutting cylinder 9 from the starting position facing the second side frame 2 into a facing the first side frame 1 End position to be moved axially.
  • the cutting cylinders 8, 9 are rotated relative to one another in the circumferential direction with respect to the cutting cylinder carrier 3 the first cutting cylinder 8 in the direction of rotation and the second cutting cylinder 9 out of phase with the direction of rotation of the two cutting cylinders 8, 9.
  • the result of this is that the cutting knives 13 produce uneven, alternating cutting lengths on the collecting cylinder 4. The cut is carried out alternately before and after the cutting position of the cutting knife 13 when the knife is not being collected on the cutting bars 16.
  • the axial displacement of the cutting cylinders 8, 9 can also be done by means of other suitable drives, such as. B. electric motors, linear motors, electromagnets, etc. are executed. It is also possible to leave the cutting cylinders 8, 9 axially fixed on the cutting cylinder carrier 3 and the phase shift of the rotary movement from the cutting cylinders 8, 9 to the cutting cylinder carrier 3 or the collecting cylinder 4, for example by detachable, adjustable in the circumferential direction with respect to the cutting cylinders 8, 9 Perform planetary gears 27.
  • the cutting cylinders 8, 9 can be connected to the respective planetary gear 27 by means of a frictional clutch.
  • the planetary gears 27 of the cutting cylinders 8, 9 can be provided with toothings whose helix angles are opposite. These planet gears 27 engage axially offset in a correspondingly arrow-shaped toothed sun gear 26. For the desired opposite phase shift of the cutting cylinders 8, 9, the sun gear 26 is axially displaced, while the cutting cylinders 8, 9 maintain their axial position.

Description

Die Erfindung betrifft eine Schneidvorrichtung zum Querschneiden von laufenden Bahnen in Produkte mit veränderbaren Längen insbesondere in einem einer Rotationsdruckmaschine nachgeordneten Falzapparat gemäß dem Oberbegriff des Anspruches 1.The invention relates to a cutting device for Cross cutting of running webs in products with changeable lengths especially in one Rotary printing machine subordinate folder according the preamble of claim 1.

Die EP 03 64 864 A2 beschreibt eine gattungsgemäße Schneidvorrichtung in einem von "Sammeln" auf "Nichtsammeln" umschaltbaren Falzapparat einer Rotationsdruckmaschine. Hierbei wirkt ein mit zwei Schneidmessern versehener Schneidzylinder mit einem drei Schneidleisten aufweisenden Sammelzylinder zusammen. Während eines Querschneidens einer Bahn in Produkte, taucht das jeweilige Schneidmesser in die entsprechende Schneidleiste ein. Die Schneidvorrichtung kann auf verschiedene Produktlängen eingestellt werden und dann alternierende Produktlängen erzeugen. Nachteilig an dieser Schneidvorrichtung ist, daß die Schneidmesser in den Schneidleisten zykloidenartige Bewegungen ausführen, wodurch die z. B. aus elastischem Kunststoff bestehenden Schneidleisten einem hohen Verschleiß unterliegen. Die Schneidvorrichtung ist zum Verstellen auf verschiedene Produktlängen kompliziert aufgebaut. EP 03 64 864 A2 describes a generic one Cutting device in one of "collecting" "Not collecting" switchable folder one Rotary printing press. Here one works with two Cutting cylinder provided with a three Collecting cylinder having cutting strips together. While cutting a web into products, dips the respective cutting knife into the corresponding one Cutting bar. The cutter can on different product lengths can be set and then Generate alternate product lengths. A disadvantage of this cutting device is that the Cutting blades in the cutting strips cycloid-like Carry out movements, whereby the z. B. from elastic Plastic existing cutting strips a high Subject to wear. The cutting device is for Difficult to adjust to different product lengths built up.

Die DE 39 34 673 C2 zeigt eine in der Formatlänge einstellbare Schneideinrichtung. Auf einem Messerzylinder ist ein Messertragbalken und auf einem Gegenzylinder ist eine Schneidleiste schwenkbar gelagert. Durch einen veränderbaren Hub dieser Schwenkeinrichtungen kann die Formatlänge verstellt werden.DE 39 34 673 C2 shows one in the format length adjustable cutting device. On one Knife cylinder is a knife support beam and on one Counter cylinder, a cutting bar is pivotable stored. By changing the stroke of this Swivel devices can adjust the format length become.

Nachteilig an dieser Schneidvorrichtung ist, daß auch die Schneidleisten schwenkbar gelagert sind.A disadvantage of this cutting device is that too the cutting bars are pivoted.

Die DE 11 05 698 A offenbart eine Schneidvorrichtung mit einem rotierenden Schneidzylinderträger. Auf diesem Schneidzylinderträger sind zwei rotierende, mit Schneidmessern versehene Schneidzylinder angeordnet. Eine Phasenverstellung des Schneidzylinders bezüglich des Schneidzylinderträgers zur Veränderung der Länge der geschnittenen Produkte ist nicht vorgesehen.DE 11 05 698 A discloses a cutting device a rotating cutting cylinder carrier. On this Cutting cylinder carriers are two rotating, with Cutting knives provided cutting cylinders arranged. A phase adjustment of the cutting cylinder with respect of the cutting cylinder carrier to change the length of the cut products is not provided.

Der Erfindung liegt die Aufgabe zugrunde, eine Schneidvorrichtung zum Querschneiden von laufenden Bahnen in Signaturen mit veränderbaren Längen zu schaffen.The invention has for its object a Cutting device for cross cutting of running Signatures with changeable lengths create.

Diese Aufgabe wird erfindungsgemäß durch die Merkmale des kennzeichnenden Teiles des Anspruches 1 gelöst.This object is achieved by the features of the characterizing part of claim 1 solved.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, daß Relativbewegungen der Schneidmesser bezüglich der Schneidleisten annähernd senkrecht zur Schneidbewegung weitgehend vermieden werden. Dadurch werden auf die Schneidmesser und Schneidleisten wirkende Biegespannungen und Schneidkräfte sowie die Walkbewegungen in den Schneidleisten vermindert. Durch die entlang einer Geraden bezogen auf einen Gegenzylinder erfolgenden Schneidbewegung werden die beim Stand der Technik auftretenden, Kerben erzeugenden Schabbewegungen der Schneidmesser in den Schneidleisten minimiert. Diese Schneidbewegung erzeugt eine höhere Schnittqualität, da ein Ausreißen des Schnittes der Bahn nicht auftritt. Durch die optimierte Schneidbewegung ist es möglich im Vergleich zum Stand der Technik mit den Schneidmessern tiefer in die Schneidleisten einzutauchen. Damit können bei der erfindungsgemäßen Schneidvorrichtung Schneidmesser verwendet werden, deren Messerschneide keinen äquidistanten Abstand zur Drehachse des Schneidzylinders aufweist, wie z. B. keilförmig, V-förmig oder pfeilförmig verlaufende Schneidmesser. Dies hat zur Folge, daß die bisher stoßartig auftretenden, sehr großen Schneidkräfte, wesentlich verringert werden. Damit ist es möglich dickere Bahnen bzw. mehr Lagen von Bahnen zu schneiden sowie höhere Produktionsgeschwindigkeiten zu erreichen.
Außerdem wird die durch Schwingungen erzeugte Belastung der Schneidvorrichtung verkleinert.
Eine Anpassung der erfindungsgemäßen Schneidvorrichtung an verschieden lange Produkte erfolgt mittels einfacher, ferngesteuerter Antriebe, so daß eine automatische Umstellung beispielsweise von Nichtsammelbetrieb auf Sammelbetrieb der Schneid- und Sammelvorrichtung möglich ist. The advantages that can be achieved with the invention consist in particular in that relative movements of the cutting knives with respect to the cutting strips approximately perpendicular to the cutting movement are largely avoided. As a result, bending stresses and cutting forces acting on the cutting knives and cutting strips and the flexing movements in the cutting strips are reduced. The cutting movement occurring along a straight line in relation to a counter cylinder minimizes the notching-producing scraping movements of the cutting knives in the cutting strips which occur in the prior art. This cutting movement produces a higher cut quality because the cut of the web does not tear out. Thanks to the optimized cutting movement, it is possible to dive deeper into the cutting bars compared to the prior art with the cutting blades. Thus, cutting knives can be used in the cutting device according to the invention, the knife edge of which is not equidistant from the axis of rotation of the cutting cylinder, such as. B. wedge-shaped, V-shaped or arrow-shaped cutting knife. The result of this is that the very large cutting forces which have so far occurred abruptly are substantially reduced. This makes it possible to cut thicker webs or more layers of webs and to achieve higher production speeds.
In addition, the load on the cutting device caused by vibrations is reduced.
The cutting device according to the invention is adapted to products of different lengths by means of simple, remote-controlled drives, so that an automatic changeover, for example from non-collecting operation to collecting operation of the cutting and collecting device, is possible.

Die erfindungsgemäße Schneidvorrichtung ist in der Zeichnung dargestellt und wird im folgenden näher beschrieben.The cutting device according to the invention is in the Drawing shown and will be described in more detail below described.

Es zeigen

Fig. 1
eine schematische Seitenansicht einer erfindungsgemäßen Schneidvorrichtung;
Fig. 2
einen schematischen Schnitt der erfindungsgemäßen Schneidvorrichtung.
Show it
Fig. 1
a schematic side view of a cutting device according to the invention;
Fig. 2
a schematic section of the cutting device according to the invention.

In Seitengestellen 1, 2 beispielsweise eines Falzapparates einer Rotationsdruckmaschine sind ein Schneidzylinderträger 3 und ein Sammelzylinder 4 um ihre parallel zueinander verlaufenden Drehachsen 6, 7 gleichläufig drehbar gelagert. Im vorliegenden ersten Ausführungsbeispiel (Fig. 1,2) ist der Schneidzylinderträger 3 mit zwei drehbaren, axial verschiebbaren Schneidzylindern 8, 9 versehen, deren Drehachsen 11, 12 um 180° versetzt, konzentrisch in einem Radius r3, z. B. r3 = 300 mm, zur Drehachse 6 des Schneidzylinderträgers 3 angeordnet sind. Der Schneidzylinderträger 3 dreht während eines Schneidvorganges gleichzeitig zum Sammelzylinder 4. Die Schneidzylinder 8, 9 drehen während eines Schneidvorganges gegenläufig zum Sammelzylinder 4. In jedem dieser Schneidzylinder 8, 9 sind drei parallel zu deren Drehachse 11, 12 verlaufende Schneidmesser 13 befestigt, die zueinander um 120° versetzt und deren Messerschneiden 14 in einem Radius r13, z. B. r13 = 150 mm, konzentrisch zur Drehachse 11, 12 des jeweiligen Schneidzylinders 8, 9 angeordnet sind.In side frames 1, 2, for example, one Folders of a rotary printing press are one Cutting cylinder carrier 3 and a collecting cylinder 4 around their parallel axes of rotation 6, 7 rotated in the same direction. In the present first Embodiment (Fig. 1,2) is the Cutting cylinder carrier 3 with two rotatable, axial slidable cutting cylinders 8, 9 provided whose Rotational axes 11, 12 offset by 180 °, concentric in a radius r3, e.g. B. r3 = 300 mm, to the axis of rotation 6 of Cutting cylinder carrier 3 are arranged. The Cutting cylinder carrier 3 rotates during one Cutting process simultaneously to the collecting cylinder 4. Die Cutting cylinders 8, 9 rotate during one Cutting process opposite to the collecting cylinder 4. In each of these cutting cylinders 8, 9 are three parallel to whose axes of rotation 11, 12 are cutting knives 13 attached to each other by 120 ° and their Knife cutting 14 in a radius r13, z. B. r13 = 150 mm, concentric to the axis of rotation 11, 12 of the respective cutting cylinder 8, 9 are arranged.

Der Sammelzylinder 4 dient als Gegenzylinder für die Schneidzylinder 8, 9 und ist deshalb mit zylinderfesten Schneidleisten 16 versehen. Drei um 120° versetzte Schneidleisten 16 sind deckungsgleich mit einer Mantelfläche 17 des Sammelzylinders 4 mit einem Radius r4, z. B. r4 = 300 mm, konzentrisch zur Drehachse 7 des Sammelzylinders 4 eingebracht.
Der Antrieb der Schneidzylinder 8, 9 erfolgt mittels eines Planetenzahnradgetriebes von einem Hauptantriebszahnradzug ausgehend. Der Sammelzylinder 4 weist ein Zahnrad 18 mit einer Zähnezahl z18, z. B. z18 = 132, auf, das von einem nichtdargestellten Antrieb angetrieben wird. In dieses Zahnrad 18 des Sammelzylinders 4 greift ein im Seitengestell 1 gelagertes Zwischenzahnrad 19 mit der Zähnezahl z19, z. B. z19 = 64, zum Antrieb des Schneidzylinderträgers 3 ein, das wiederum mit einem zweiten, im Seitengestell 1 gelagerten Zwischenzahnrad 21 mit einer Zähnezahl z21, z. B. z21 = 64, zusammenwirkt. Dieses Zwischenzahnrad 21 wälzt mit einem Zahnrad 22 mit einer Zähnezahl z22, z.B. z22 = 88, des Schneidzylinderträgers 3 ab, wodurch der Schneidzylinderträger 3 mit der Drehzahl n3 rotiert.
Mit dem Zwischenzahnrad 21 ist ein Zahnrad 23 mit einer Zähnezahl z23, z. B. z23 = 39, verbunden, das in ein konzentrisch zur Drehachse 6 des Schneidzylinderträgers 3 frei drehbar gelagertes Zahnrad 24 mit einer Zähnezahl z24, z. 8. z24 = 33, eingreift. Mit diesem Zahnrad 24 ist ein außenverzahntes, schrägverzahntes Sonnenzahnrad 26 mit einer Zähnezahl z26, z. B. z26 = 96, verbunden, in dem ein schrägverzahntes Planetenzahnrad 27 mit einer Zähnezahl z27, z. B. z27 = 36, des jeweiligen Schneidzylinders 8, 9 kämmt.The collecting cylinder 4 serves as a counter cylinder for the cutting cylinders 8, 9 and is therefore provided with cutting bars 16 which are fixed to the cylinder. Three 120 ° offset cutting strips 16 are congruent with a lateral surface 17 of the collecting cylinder 4 with a radius r4, z. B. r4 = 300 mm, introduced concentrically to the axis of rotation 7 of the collecting cylinder 4.
The cutting cylinders 8, 9 are driven by means of a planetary gear transmission starting from a main drive gear train. The collecting cylinder 4 has a gear 18 with a number of teeth z18, z. B. z18 = 132, which is driven by a drive, not shown. In this gear 18 of the collecting cylinder 4 engages an intermediate gear 19 mounted in the side frame 1 with the number of teeth z19, z. B. z19 = 64, for driving the cutting cylinder carrier 3, which in turn with a second, in the side frame 1 mounted intermediate gear 21 with a number of teeth z21, z. B. z21 = 64 interacts. This intermediate gear 21 rolls with a gear 22 with a number of teeth z22, for example z22 = 88, of the cutting cylinder carrier 3, whereby the cutting cylinder carrier 3 rotates at the speed n3.
With the intermediate gear 21 is a gear 23 with a number of teeth z23, z. B. z23 = 39, connected in a concentrically to the axis of rotation 6 of the cutting cylinder support 3 freely rotatably mounted gear 24 with a number of teeth z24, z. 8. z24 = 33, intervenes. With this gear 24 is an externally toothed, helical sun gear 26 with a number of teeth z26, z. B. z26 = 96, connected in which a helical planet gear 27 with a number of teeth z27, z. B. z27 = 36, the respective cutting cylinder 8, 9 combs.

Die Schneidleisten 16 des Sammelzylinders 4 wirken mit den Schneidmessern 13 der beiden Schneidzylinder 8, 9 zusammen. Deshalb muß eine Drehzahl n3 des Schneidzylinderträgers 3 das 1,5-fache einer Drehzahl n4 des Sammelzylinders 4, d. h. n3 = 1,5 x n4, betragen. Um eine annähernd radiale Ausrichtung der Schneidmesser 13 bezüglich des Sammelzylinders 4 während des Schneidens zu erhalten, beträgt eine Drehzahl n8 der Schneidzylinder 8, 9 eine Summe aus einem Betrag der Drehzahl n3 des Schneidzylinderträgers 3 und aus einem Betrag der Drehzahl n4 des Sammelzylinders 4,
d.h. n8=|n3| + |n4|. Mit den ausgeführten Radien r3, r4 und r13 ergibt sich eine annähernd gleiche Umfangsgeschwindigkeit von Schneidmesser 13 und Schneidleiste 14 während des Schneidens.
Eine Bahn 28, z. B. Papierbahn, Folienbahn oder Textilbahn wird auf dem Sammelzylinder 4 geführt und mittels der Schneidmesser 13 und Schneidleisten 16 in Signaturen geschnitten. Hierzu drehen die Schneidzylinder 8, 9 und damit die Schneidmesser 13 um ihre jeweilige Drehachse 11, 12. Diese Drehbewegung wird mittels des beschriebenen Antriebes derart ausgeführt, daß das jeweilige am aktuellen Schneidvorgang beteiligte Schneidmesser 13 von Beginn bis Ende des Schneidvorganges, d. h. von Auftreffen auf die Bahn 28 bis Abheben von der Bahn 28, eine annähernd radiale, auf die Drehachse 7 des Sammelzylinders 4 ausgerichtete Bewegung ausführt. Diese annähernd radiale Bewegung weist einen kleinen, parallelen Versatz von der idealen radialen Richtung auf, wobei dieser Versatz durch Variation von den Radien r3, r4 und r13 minimiert werden kann. Dabei bewegen sich sowohl das betreffende Schneidmesser 13 als auch die entsprechende Schneidleiste 14 mit annähernd Bahngeschwindigkeit. Das Schneidmesser 13 bewegt sich radial auf den Sammelzylinder 4 zu, durchtrennt die Bahn 28 und dringt in die Schneidleiste 16 ein. In dieser tiefsten Stellung des Schneidmessers 13 in der Schneidleiste 16 liegen die Drehachsen 6, 7, 11 und 12 sowie das Schneidmesser 13 auf einer gemeinsamen Geraden. Dort ist eine Radialgeschwindigkeit des Schneidmessers 13 null und die Aushubbewegung des Schneidmessers 13 beginnt. Die Aushubbewegung des Schneidmessers 13 erfolgt ebenfalls radial bezüglich des Sammelzylinders 4.The cutting strips 16 of the collecting cylinder 4 interact with the cutting knives 13 of the two cutting cylinders 8, 9. Therefore, a speed n3 of the cutting cylinder carrier 3 must be 1.5 times a speed n4 of the collecting cylinder 4, ie n3 = 1.5 x n4. In order to obtain an approximately radial alignment of the cutting knives 13 with respect to the collecting cylinder 4 during cutting, a rotational speed n8 of the cutting cylinders 8, 9 is a sum of an amount of the rotational speed n3 of the cutting cylinder carrier 3 and an amount of the rotational speed n4 of the collecting cylinder 4,
ie n8 = | n3 | + | n4 |. With the radii r3, r4 and r13 carried out, there is approximately the same circumferential speed of the cutting knife 13 and cutting bar 14 during cutting.
A web 28, e.g. B. paper web, film web or textile web is guided on the collecting cylinder 4 and cut by means of the cutting knife 13 and cutting strips 16 in signatures. For this purpose, the cutting cylinders 8, 9 and thus the cutting knives 13 rotate about their respective axes of rotation 11, 12. This rotary movement is carried out by means of the drive described in such a way that the respective cutting knife 13 involved in the current cutting process from the beginning to the end of the cutting process, ie from impact the web 28 to take off from the web 28, performs an approximately radial movement aligned with the axis of rotation 7 of the collecting cylinder 4. This approximately radial movement has a small, parallel offset from the ideal radial direction, this offset being able to be minimized by varying the radii r3, r4 and r13. Both the cutting knife 13 in question and the corresponding cutting bar 14 move at approximately web speed. The cutting knife 13 moves radially towards the collecting cylinder 4, cuts through the web 28 and penetrates into the cutting bar 16. In this lowest position of the cutting knife 13 in the cutting bar 16, the axes of rotation 6, 7, 11 and 12 and the cutting knife 13 lie on a common straight line. There, a radial speed of the cutting knife 13 is zero and the excavation movement of the cutting knife 13 begins. The excavating movement of the cutting knife 13 also takes place radially with respect to the collecting cylinder 4.

Die Schneidzylinder 8, 9 sind auf dem Schneidzylinderträger 3 axial verschiebbar gelagert. Hierzu greift an dem jeweiligen Schneidzylinder 8, 9 jeweils ein mit Druckmittel beaufschlagbarer Zylinder, z. B. ein Pneumatikzylinder 29, 31, an, die auf dem Schneidzylinderträger 3 ortsfest angeordnet sind. Das benötigte Druckmittel wird den Pneumatikzylindern 29, 31 beispielsweise mittels einer zentrisch auf dem Schneidzylinderträger 3 befestigten Dreheinführung 32 zugeführt. Die Pneumatikzylinder 29, 31 der Schneidzylinder 8, 9 sind derart geschaltet, daß in der Nichtsammelstellung sich der erste Schneidzylinder 8 in seiner dem ersten Seitengestell 1 zugewandten Ausgangsposition befindet und der zweite Schneidzylinder 9 sich in seiner dem zweiten Seitengestell 2 zugewandten Ausgangsposition befindet. Hierbei sind die Planetenzahnräder 27 der gegenüberliegenden Schneidzylinder 8, 9 bezüglich der Schneidmesser 13 derart am Schneidzylinder 8, 9 angeordnet, daß in der Nichtsammelstellung der Schneidzylinder 8, 9 und des Sammelzylinders 4 die Schnitte der beiden Schneidzylinder 8, 9 genau um 180° versetzt zueinander ausgeführt werden.
Zum Sammeln von Produkten werden die beiden Schneidzylinder 8, 9 in ihre Sammelstellung gebracht. Hierzu werden die Pneumatikzylinder 29, 31 betätigt, wodurch der erste Schneidzylinder 8 von der dem ersten Seitengestell 1 zugewandten Ausgangsposition in eine dem zweiten Seitengestell 2 zugewandten Endposition und der zweite Schneidzylinder 9 von der dem zweiten Seitengestell 2 zugewandten Ausgangsposition in eine dem ersten Seitengestell 1 zugewandte Endposition axial verschoben werden. Durch die schrägverzahnten Planetenzahnräder 27 und das mit diesen zusammenwirkende Sonnenzahnrad 26, erfolgt eine relative Drehwinkelverdrehung der Schneidzylinder 8, 9 in Umfangsrichtung bezüglich des Schneidzylinderträgers 3. Von den beiden Schneidzylindern 8, 9 werden entsprechend der Schrägung der Verzahnung von den Planetenzahnrädern 27 und dem Sonnenzahnrad 26 der erste Schneidzylinder 8 in Drehrichtung und der zweite Schneidzylinder 9 gegen die Drehrichtung der beiden Schneidzylinder 8, 9 phasenverstellt. Dies hat zur Folge, daß die Schneidmesser 13 auf dem Sammelzylinder 4 ungleiche, alternierende Schnittlängen erzeugen. Der Schnitt wird während des Sammelns alternierend vor und nach der Schnittposition des Schneidmessers 13 bei Nichtsammeln auf den Schneidleisten 16 ausgeführt.The cutting cylinders 8, 9 are mounted axially displaceably on the cutting cylinder carrier 3. For this purpose, a respective cylinder, e.g. B. a pneumatic cylinder 29, 31, which are arranged on the cutting cylinder carrier 3 stationary. The pressure medium required is supplied to the pneumatic cylinders 29, 31, for example by means of a rotary inlet 32 which is fixed centrally on the cutting cylinder carrier 3. The pneumatic cylinders 29, 31 of the cutting cylinders 8, 9 are switched such that in the non-collecting position the first cutting cylinder 8 is in its starting position facing the first side frame 1 and the second cutting cylinder 9 is in its starting position facing the second side frame 2. Here, the planetary gears 27 of the opposing cutting cylinders 8, 9 are arranged with respect to the cutting knives 13 on the cutting cylinders 8, 9 such that in the non-collecting position of the cutting cylinders 8, 9 and the collecting cylinder 4, the cuts of the two cutting cylinders 8, 9 are offset by exactly 180 ° to one another be carried out.
To collect products, the two cutting cylinders 8, 9 are brought into their collecting position. For this purpose, the pneumatic cylinders 29, 31 are actuated, whereby the first cutting cylinder 8 from the starting position facing the first side frame 1 into an end position facing the second side frame 2 and the second cutting cylinder 9 from the starting position facing the second side frame 2 into a facing the first side frame 1 End position to be moved axially. Due to the helical-toothed planetary gears 27 and the sun gear 26 cooperating with them, the cutting cylinders 8, 9 are rotated relative to one another in the circumferential direction with respect to the cutting cylinder carrier 3 the first cutting cylinder 8 in the direction of rotation and the second cutting cylinder 9 out of phase with the direction of rotation of the two cutting cylinders 8, 9. The result of this is that the cutting knives 13 produce uneven, alternating cutting lengths on the collecting cylinder 4. The cut is carried out alternately before and after the cutting position of the cutting knife 13 when the knife is not being collected on the cutting bars 16.

Anstelle der Pneumatikylinder 29, 31 kann die axiale Verschiebung der Schneidzylinder 8, 9 auch mittels anderer geeigneter Antriebe, wie z. B. Elektromotoren, Linearmotoren, Elektromagnete usw. ausgeführt werden. Ebenso ist es möglich die Schneidzylinder 8, 9 axial fest auf dem Schneidzylinderträger 3 zu belassen und die Phasenverschiebung der Drehbewegung von den Schneidzylindern 8, 9 zu dem Schneidzylinderträger 3 bzw. dem Sammelzylinder 4 beispielsweise durch lösbare, in Umfangsrichtung bezüglich der Schneidzylinder 8, 9 verstellbare Planetenzahnräder 27 durchzuführen. Hierzu können die Schneidzylinder 8, 9 mit dem jeweiligen Planetenzahnrad 27 mittels einer reibschlüssigen Kupplung verbunden sein.
In einer weiteren, nichtdargestellten Ausführungsvariante können die Planetenzahnräder 27 der Schneidzylinder 8, 9 mit Verzahnungen versehen sein, deren Schrägungswinkel gegenläufig sind. Diese Planetenzahnräder 27 greifen axial versetzt in ein entsprechend pfeilförmig verzahntes Sonnenzahnrad 26 ein. Zur gewünschten gegenläufigen Phasenverschiebung der Schneidzylinder 8, 9 wird das Sonnenzahnrad 26 axial verschoben, während die Schneidzylinder 8, 9 ihre axiale Position beibehalten. Instead of the pneumatic cylinders 29, 31, the axial displacement of the cutting cylinders 8, 9 can also be done by means of other suitable drives, such as. B. electric motors, linear motors, electromagnets, etc. are executed. It is also possible to leave the cutting cylinders 8, 9 axially fixed on the cutting cylinder carrier 3 and the phase shift of the rotary movement from the cutting cylinders 8, 9 to the cutting cylinder carrier 3 or the collecting cylinder 4, for example by detachable, adjustable in the circumferential direction with respect to the cutting cylinders 8, 9 Perform planetary gears 27. For this purpose, the cutting cylinders 8, 9 can be connected to the respective planetary gear 27 by means of a frictional clutch.
In a further embodiment variant, not shown, the planetary gears 27 of the cutting cylinders 8, 9 can be provided with toothings whose helix angles are opposite. These planet gears 27 engage axially offset in a correspondingly arrow-shaped toothed sun gear 26. For the desired opposite phase shift of the cutting cylinders 8, 9, the sun gear 26 is axially displaced, while the cutting cylinders 8, 9 maintain their axial position.

TeilelisteParts list

11
SeitengestellSide frame
22nd
SeitengestellSide frame
33rd
SchneidzylinderträgerCutting cylinder holder
44th
SammelzylinderCollecting cylinder
55
--
66
Drehachse (3)Axis of rotation (3)
77
Drehachse (4)Axis of rotation (4)
88th
SchneidzylinderCutting cylinder
99
SchneidzylinderCutting cylinder
1010th
--
1111
Drehachse (8)Axis of rotation (8)
1212th
Drehachse (9)Axis of rotation (9)
1313
SchneidmesserCutting knife
1414
MesserschneideKnife edge
1515
--
1616
SchneidleisteCutting bar
1717th
MantelflächeLateral surface
1818th
Zahnradgear
1919th
ZwischenzahnradIdler gear
2020th
--
2121
ZwischenzahnradIdler gear
2222
Zahnrad (3)Gear (3)
2323
Zahnradgear
2424th
Zahnradgear
2525th
--
2626
SonnenzahnradSun gear
2727
Planetenzahnrad Planet gear
2828
Bahntrain
2929
PneumatikzylinderPneumatic cylinder
3030th
--
3131
PneumatikzylinderPneumatic cylinder
3232
DreheinführungRotary introduction
n3n3
Drehzahlrotational speed
n4n4
Drehzahlrotational speed
n8n8
Drehzahlrotational speed
r3r3
Radiusradius
r4r4
Radiusradius
r13r13
Radiusradius
z18z18
ZähnezahlNumber of teeth
z19z19
ZähnezahlNumber of teeth
z21z21
ZähnezahlNumber of teeth
z22z22
ZähnezahlNumber of teeth
z23z23
ZähnezahlNumber of teeth
z24z24
ZähnezahlNumber of teeth
z26z26
ZähnezahlNumber of teeth
z27z27
ZähnezahlNumber of teeth

Claims (6)

  1. Cutting apparatus for cross cutting continuous webs (28) into variable-length products, in particular in a folder arranged downstream of a rotary printing machine, having a cutting cylinder (8) which is provided with cutting knives (13) and is arranged such that it interacts with a mating cylinder (4) provided with stationary connecting bars (16), characterized in that a cutting-cylinder carrier (3) rotating at a first rotational speed (n3) is provided, in that at least one cutting cylinder (8) rotating at a second rotational speed (n8) and provided with at least one cutting knife (13) is arranged on the cutting-cylinder carrier (3), and in that the cutting cylinder (8) is arranged in a phase-adjustable manner in relation to the cutting-cylinder carrier (3).
  2. Cutting apparatus according to Claim 1, characterized in that the rotational speeds (n3; n8) of the cutting cylinder (8) and cutting-cylinder carrier (3) are adapted to one another such that the cutting knife (13) involved in a current cutting operation is arranged, at least during the cutting operation, such that it executes a cutting movement which runs more or less radially in relation to an axis of rotation (7) of the mating cylinder (4).
  3. Cutting apparatus according to Claims 1 and 2, characterized in that the rotational speed (n8) of the cutting cylinder (8) corresponds more or less to the sum of the rotational speeds (n3; n4) of the cutting-cylinder carrier (3) and mating cylinder (4), i.e. n8 = | n3 | + | n4 |.
  4. Cutting apparatus according to Claims 1, characterized in that a planetary gear mechanism is provided for driving the cutting cylinder (8), in that the cutting cylinder (8) is provided with a helically toothed planetary gearwheel (27), in that a helically toothed sun gearwheel (26) interacting with the planetary gearwheel (27) is provided, and in that the sun gearwheel (26) and planetary gearwheel (27) are arranged such that they can be displaced axially relative to one another.
  5. Cutting apparatus according to Claims 1 to 4, characterized in that the planetary gearwheel (27) is fixed to the cutting cylinder (8), and in that the cutting cylinder (8) is arranged such that it can be displaced axially in relation to the cutting-cylinder carrier (3).
  6. Cutting apparatus according to Claims 1 to 5, characterized in that the cutting-cylinder carrier (3) is provided with two cutting cylinders (8, 9) which are offset through 180° in relation to one another, and in that the cutting cylinders (8, 9) are arranged such that they can be displaced axially in opposite directions to one another.
EP96107639A 1995-05-20 1996-05-14 Cutting device Expired - Lifetime EP0744368B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19518650 1995-05-20
DE19518650A DE19518650C1 (en) 1995-05-20 1995-05-20 Cutting device

Publications (3)

Publication Number Publication Date
EP0744368A2 EP0744368A2 (en) 1996-11-27
EP0744368A3 EP0744368A3 (en) 1997-12-03
EP0744368B1 true EP0744368B1 (en) 2001-10-31

Family

ID=7762498

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96107639A Expired - Lifetime EP0744368B1 (en) 1995-05-20 1996-05-14 Cutting device

Country Status (4)

Country Link
US (1) US5692440A (en)
EP (1) EP0744368B1 (en)
JP (1) JP2849068B2 (en)
DE (2) DE19518650C1 (en)

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Publication number Priority date Publication date Assignee Title
IT1313808B1 (en) * 1999-11-02 2002-09-23 Giovanni Gambini PERFORATOR DEVICE FOR PAPER TAPES IN REWINDING MACHINES
US6644155B2 (en) 2000-12-19 2003-11-11 Kimberly-Clark Worldwide, Inc. Roll product dispenser with improved cutting mechanism
EP1620343B1 (en) * 2003-05-02 2007-07-04 Koenig & Bauer Aktiengesellschaft Rotary folder comprising a cutting device for cross-cutting at least one web
US7347134B2 (en) 2004-09-29 2008-03-25 Kimberly-Clark Worldwide, Inc. No touch dispenser for sheet material with automatic advance
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
DE102006016266B3 (en) * 2006-01-18 2007-06-28 Koenig & Bauer Aktiengesellschaft Assembly to effect a transverse cut or perforation in a web of moving paper has knife drum mounted on tilt frame
US20100101386A1 (en) * 2008-10-29 2010-04-29 Goss International Americas, Inc. Variable signature length web cutting apparatus
DE102009035269A1 (en) * 2009-07-29 2011-02-03 Krones Ag Cutting device and cutting method for cutting labels and labeling device
PL219048B1 (en) * 2011-05-23 2015-03-31 Int Tobacco Machinery Poland Detachable cutting head for a device for feeding the sets of filter segments, drive unit for the detachable cutting head and method for replacing the detachable cutting head
ITMI20120724A1 (en) * 2012-05-02 2013-11-03 Qts Srl POWER SUPPLY AND CUTTING GROUP FOR A DISPENSER OF PAPER SHEETS OBTAINED FROM A CONTINUOUS TAPE
DE102013102729A1 (en) * 2013-03-18 2014-09-18 Manroland Web Systems Gmbh Folding device of a printing press and method for operating the folding device
DE102017004370A1 (en) * 2017-05-05 2018-11-08 Kolbus Gmbh & Co. Kg Apparatus for producing collections of sheet-shaped printed products and folding apparatus
CN107891629B (en) * 2018-01-10 2023-10-27 陈金选 Automatic cutting machine specification adjustment mechanism of drum-type braided bag

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JPS4917586A (en) * 1972-06-13 1974-02-16
FR2276926A1 (en) * 1974-07-01 1976-01-30 Windmoeller & Hoelscher DEVICE FOR SEPARATING SEGMENTS TAKEN FROM CONTINUOUS STRIPS OF MATERIAL, IN PARTICULAR BOTTOM COVER SHEETS, FOR THE MANUFACTURE OF BAGS
US4009626A (en) * 1975-07-09 1977-03-01 Gressman Richard H Variable rotary cutter
JPS6165713A (en) * 1984-09-05 1986-04-04 Ishikawajima Harima Heavy Ind Co Ltd Flying shear
JPS61159319A (en) * 1985-01-08 1986-07-19 Nippon Denso Co Ltd Rotary cutter for cutting continuous corrugated body
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JPH0257876U (en) * 1988-10-19 1990-04-25
JP2815675B2 (en) * 1989-05-31 1998-10-27 東芝機械株式会社 Combined folding machine
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DE3934673A1 (en) * 1989-10-18 1991-04-25 Man Miller Druckmasch CROSS-CUTTING DEVICE ADJUSTABLE IN FORMAT LENGTH FOR RUNNING PATHS
DE4225810C2 (en) * 1992-08-05 1995-06-14 Roland Man Druckmasch Folding cylinder
FR2711576B1 (en) * 1993-10-26 1996-01-19 Heidelberg Harris Sa Device for controlling the accumulation or non-accumulation of a cutter-accumulator cylinder of a folder.

Also Published As

Publication number Publication date
EP0744368A3 (en) 1997-12-03
EP0744368A2 (en) 1996-11-27
DE59608039D1 (en) 2001-12-06
JPH08336792A (en) 1996-12-24
JP2849068B2 (en) 1999-01-20
US5692440A (en) 1997-12-02
DE19518650C1 (en) 1996-10-24

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