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EP1525960A1 - Cutting device for cutting web material - Google Patents

Cutting device for cutting web material Download PDF

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Publication number
EP1525960A1
EP1525960A1 EP20030405758 EP03405758A EP1525960A1 EP 1525960 A1 EP1525960 A1 EP 1525960A1 EP 20030405758 EP20030405758 EP 20030405758 EP 03405758 A EP03405758 A EP 03405758A EP 1525960 A1 EP1525960 A1 EP 1525960A1
Authority
EP
European Patent Office
Prior art keywords
cutting
blade
self
cutting blade
edge
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.)
Withdrawn
Application number
EP20030405758
Other languages
German (de)
French (fr)
Inventor
Behringer Richard
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.)
Mueller Martini Holding AG
Original Assignee
Mueller Martini Holding AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Mueller Martini Holding AG filed Critical Mueller Martini Holding AG
Priority to EP20030405758 priority Critical patent/EP1525960A1/en
Priority to JP2004303806A priority patent/JP2005125488A/en
Priority to US10/967,920 priority patent/US20050109179A1/en
Priority to CNA2004100869390A priority patent/CN1616333A/en
Publication of EP1525960A1 publication Critical patent/EP1525960A1/en
Withdrawn legal-status Critical Current

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Classifications

    • 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
    • B26D1/0006—Cutting members therefor
    • 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
    • B26D7/2628—Means for adjusting the position of the cutting member
    • 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
    • B26D1/0006—Cutting members therefor
    • B26D2001/002—Materials or surface treatments therefor, e.g. composite materials
    • 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
    • B26D1/0006—Cutting members therefor
    • B26D2001/0053—Cutting members therefor having a special cutting edge section or blade section
    • 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
    • B26D2007/2685—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member flexible mounting means
    • 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

Definitions

  • the invention relates to a cutting device for cutting a web, with a rotatable cutting cylinder, the has at least one first cutting blade on a circumference, which cooperates with a fixed second cutting blade, to cut the web in the transverse direction.
  • a cutting device of this kind is known in the art from EP 1 186 561 A of the Applicant known. These is used for cutting paper webs or film webs and has proven in practice in itself.
  • the cutting cylinder is with tapered roller bearings rotatably mounted on side plates.
  • Heat generated by the thermal expansion of the side plates a distance increase between the two Cutting knives causes. By this distance increase is the cut quality usually worse.
  • By downsizing This distance with warm machine may be the distance set again optimally and thus the desired high Cutting quality can be achieved again.
  • This difficulty has been solved by the installation of heated bearings.
  • such heated bearings cause significant Costs and installation problems.
  • the heaters need to preheat the side bearings preheated for several hours.
  • the invention is based on the object, a cutting device of the said type, which the said Disadvantages avoids and thus at high cutting quality the maintenance and the maintenance can be simplified.
  • the task is in a generic cutting device solved by at least one of the two cutting blades is formed own springing.
  • inventive Cutting device acts the self-locking cutting blade when Cutting process essentially like a spring and thereby This self-resilient cutting blade much more tolerant respect Distance changes between the two cutting blades. Cuts the self-springing knife with warm cutting device with required high quality, so it will be with cold machine and thus smaller distance between the Cutting knives will not wear out in a short time and may be one high cut quality can be achieved.
  • fixed cutting blade formed self-sprung. in principle but can also be attached to the cutting cylinder first Cutting knife be designed self-springing.
  • the self-sprung Cutting knife at least one recess.
  • This recess is in accordance with a development of the invention a Slit extending at least parallel to a cutting edge extends and in which this cutting edge can spring.
  • the Slot is preferably formed to be between two Cutting edges runs.
  • the self-sprung Cutting knife two slots on and each of these slots is arranged between two cutting edges when cutting in the common slot einfedern.
  • the self-locking cutting knife has four Cutting edges, which changed by turning the cutting blade can be.
  • Also in this version is each provided that a non-active Cutting edge rests against a stop surface and thus the eigenfedernde Cutting knife positioned.
  • the self-resilient Cutting knife created a cover bar, which is a front Edge, which is substantially parallel and at a distance runs to a cutting edge.
  • the cover bar can be the active cutting edge and thus the springy area the cutting blade to be stabilized.
  • the Sliding cover movable, so unwanted vibrations the resilient portion of the cutting blade effectively prevented can be.
  • the eigenfedernde Cut off knife This will be a resilient area created, which is held so that it is free-standing.
  • the self-locking cutting blade preferably two cutting edges, which can be changed.
  • the eigenfedernde Cutting knife at least in the area of an active cutting edge comparatively thin and in this area free-standing.
  • This cutting blade preferably has also four cutting edges.
  • the cutting device 1 shown in Figures 1 and 2 is used for cutting an endless web 12, in particular a paper web in equal sections.
  • the transport of the web 12 takes place continuously in the direction of arrow 13, these being Rail 12 is pushed and pulled.
  • Means for transportation the web 12 are well known to those skilled in the art and need it here not to be explained.
  • the web 12 is thus transported in the direction of arrow 25 from left to right.
  • a cutting cylinder 8 To cut the web 12 transversely to the transport direction has the cutting device 1 a cutting cylinder 8, the order a rotation axis 10 in the direction of arrow 11 continuously is turned.
  • the drive for turning the cutting cylinder 8 and the side plates and bearings for this cutting cylinder 8 are known per se and not shown here.
  • At a circumference 9 of the cutting cylinder 8 is at least one bar-shaped cutting blade 4 attached, the at least one Cutting edge 14 has.
  • This cutting edge 14 is at least as long as the web 12 is wide. The width is for example in the range of 520 to 740 mm.
  • the cutting cylinder 8 has at least one cutting blade 4. He can, however Also have several such cutting blade 4, so also comparatively narrow strips cut out of the web 12 can be.
  • the cutting blade 4 operates with a likewise bar-shaped Cutting knife 5 together, which is fixed to a carrier 15 is stored.
  • a carrier 15 For positioning the cutting blade 5 on the carrier 15, this has a stop surface 22, on which the Cutting blade 5 rests with a surface 23.
  • the cutting knife 5 is also flat on a surface 31 of the carrier 15th at.
  • the cutting blade 5 is provided with two slots 20 and 21, preferably over the entire length of the bar-shaped Cutting knife 5 extend and each end face are open.
  • the slot 20 is located substantially centrally between two cutting edges 18b and 18a, the Cutting edge 18b calmed down and the cutting edge 18a is active.
  • the region 33 is calmed according to Figure 2, while the Area 32 to the slot 20 is deflected out. That's true Cutting knife 4 on the cutting edge 18 a, so this can in Press in the direction of arrow 19 in the slot 20.
  • the deflection in the direction of arrow 19, however, this is comparatively small and is a few hundredths of a millimeter.
  • the cutting blade 5 can be turned so that the cutting edge 18 a is in the area of the stop surface 22 and thus calmed while the cutting edge 18b is active.
  • the cutting blade 5 has a further slot 21 and two further cutting edges 18c and 18d. Overall, this has Cutting knife 5 thus four cutting edges 18a, 18b, 18c and 18d. All cutting edges can be changed.
  • the Regrinding takes place on the surfaces 23 and 24, respectively simultaneously two cutting edges can be ground off.
  • the cutting blade 5 has a surface 26 which is flat and parallel to the surface 31 of the carrier 15 is.
  • a cover bar 16 on the cutting blade 5 at.
  • a front edge 17 of the cover bar 16 runs parallel to the cutting edge 18a.
  • the cover bar 16 is displaceable, that the distance of the edge 17 adjusted to the cutting edge 18a can be. This is an optimal support of the resilient Area 32 possible.
  • the two cutting blades 4 and 5 and the cutting edges 14 and 18a are generally not parallel to the axis. in principle However, an axially parallel arrangement is possible.
  • the cutting blade 5 is thus self-springing and thereby becomes achieved that the cutting blade 5 acts like a spring and is considerably more tolerant of changes in distance. Emotional the axis 10 as a result of temperature changes to the Side signs up or down, such may Changes in distance due to a resilient deflection of the cutting edge 18a without significant additional wear and without Reduction of the cut quality at this cutting edge 18a be recorded. This can reduce the service life of the cutting blade 5 are significantly extended.
  • the cutting blade 5 is inherently springing educated. Basically, alternatively Cutter 4 self-springing and the cutting blade 5 rigid be educated. Basically, a design is conceivable, in which both cutting blades 4 and 5 formed own spring are.
  • FIG. 3 shows a cutting device 2 according to a variant, in which a self-locking cutting blade 6 at a Carrier 15 'is mounted.
  • the carrier 15 ' has in the region of Cutting edge 27 has a recess 28 which a deflection the cutting edge 27 allows.
  • the cutting blade 6 is comparatively thin, what the said elastic deflection allows.
  • the cutting blade 6 is also on the Stop surface 22 is positioned. When the deflection rubs that Cutting knife 6 thus at the stop surface 22nd
  • FIG. 4 shows a cutting device 3 after another Variant, in which also a self-springing cutting knife 7 is provided.
  • the cutting blade 7 is offset and has two Cutting edges 29a and 29b, wherein the cutting edge 29a active and the cutting edge 29b is settled.
  • a gap-shaped gap 30 is provided, which is a deflection of the resilient portion 34 allows cutting.
  • a cover bar 16 is provided.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Cutting Devices (AREA)

Abstract

The rotating cutting cylinder (8), at a cutting station (1) to cut a moving web (12) e.g. of paper or film, has at least one cutting blade (4) with a cutting edge (14) at its circumference (9) working with a fixed blade (5) to cut the web across its width. At least one blade, e.g. the fixed blade, has a natural spring characteristic formed by recessed openings, giving four spaced cutting edges. A sliding beam (16) shrouds the spring blade, at a gap from the active cutting edge.

Description

Die Erfindung betrifft eine Schneidvorrichtung zum Schneiden einer Materialbahn, mit einem rotierbaren Schneidzylinder, der an einem Umfang wenigstens ein erstes Schneidmesser aufweist, das mit einem feststehenden zweiten Schneidmesser zusammenwirkt, um die Materialbahn in Querrichtung zu schneiden.The invention relates to a cutting device for cutting a web, with a rotatable cutting cylinder, the has at least one first cutting blade on a circumference, which cooperates with a fixed second cutting blade, to cut the web in the transverse direction.

Eine Schneidvorrichtung dieser Art ist im Stand der Technik aus der EP 1 186 561 A der Anmelderin bekannt geworden. Diese dient zum Schneiden von Papierbahnen oder Folienbahnen und hat sich in der Praxis an sich bewährt. Der Schneidzylinder ist mit Kegelrollenlagern drehbar an Seitenschildern gelagert. Beim Schneiden wird über die Kegelrollenlager in den Seitenschildern Wärme erzeugt, die durch die Wärmedehnung der Seitenschilder eine Abstandsvergrösserung zwischen den beiden Schneidmessern bewirkt. Durch diese Abstandsvergrösserung wird die Schnittqualität in der Regel schlechter. Durch ein Verkleinern dieses Abstandes bei warmer Maschine kann der Abstand wieder optimal eingestellt und dadurch die gewünschte hohe Schneidqualität wieder erreicht werden. Dies hat jedoch den Nachteil, dass bei Schichtbeginn am Morgen beim Wiederanlaufen der Vorrichtung ein vergleichsweise hoher Verschleiss an den beiden Schneidmessern eintritt, da der genannte Abstand bei der nun kalten Maschine kleiner ist. Diese Schwierigkeit wurde bisher durch den Einbau geheizter Lagerungen gelöst. Solche beheizbaren Lagerungen verursachen jedoch erhebliche Kosten und Einbauprobleme. Zudem müssen die Heizungen zum Vorwärmen der Seitenlager mehrere Stunden vorgeheizt werden.A cutting device of this kind is known in the art from EP 1 186 561 A of the Applicant known. These is used for cutting paper webs or film webs and has proven in practice in itself. The cutting cylinder is with tapered roller bearings rotatably mounted on side plates. When cutting, use the tapered roller bearings in the side plates Heat generated by the thermal expansion of the side plates a distance increase between the two Cutting knives causes. By this distance increase is the cut quality usually worse. By downsizing This distance with warm machine may be the distance set again optimally and thus the desired high Cutting quality can be achieved again. However, this has the Disadvantage that at the beginning of the shift in the morning when restarting the device a comparatively high wear occurs at the two cutting blades, as said distance smaller at the now cold machine. This difficulty has been solved by the installation of heated bearings. However, such heated bearings cause significant Costs and installation problems. In addition, the heaters need to preheat the side bearings preheated for several hours.

Der Erfindung liegt die Aufgabe zugrunde, eine Schneidvorrichtung der genannten Art zu schaffen, welche die genannten Nachteile vermeidet und bei der somit bei hoher Schneidqualität der Unterhalt und die Wartung vereinfacht werden können.The invention is based on the object, a cutting device of the said type, which the said Disadvantages avoids and thus at high cutting quality the maintenance and the maintenance can be simplified.

Die Aufgabe ist bei einer gattungsgemässen Schneidvorrichtung dadurch gelöst, dass wenigstens eines der beiden Schneidmesser eigenfedernd ausgebildet ist. Bei der erfindungsgemässen Schneidvorrichtung wirkt das eigenfedernde Schneidmesser beim Schneidvorgang im Wesentlichen wie eine Feder und dadurch ist dieses eigenfedernde Schneidmesser wesentlich toleranter bezüglich Abstandsänderungen zwischen den beiden Schneidmessern. Schneidet das eigenfedernde Messer bei warmer Schneidvorrichtung mit erforderlicher hoher Qualität, so wird es auch bei kalter Maschine und somit kleinerem Abstand zwischen den Schneidmessern nicht in kurzer Zeit abgenutzt und kann eine hohe Schnittqualität erreicht werden.The task is in a generic cutting device solved by at least one of the two cutting blades is formed own springing. In the inventive Cutting device acts the self-locking cutting blade when Cutting process essentially like a spring and thereby This self-resilient cutting blade much more tolerant respect Distance changes between the two cutting blades. Cuts the self-springing knife with warm cutting device with required high quality, so it will be with cold machine and thus smaller distance between the Cutting knives will not wear out in a short time and may be one high cut quality can be achieved.

Vorzugsweise ist gemäss einer Weiterbildung der Erfindung das feststehende Schneidmesser eigenfedernd ausgebildet. Grundsätzlich kann aber auch das am Schneidzylinder befestigte erste Schneidmesser eigenfedernd ausgebildet sein.Preferably, according to an embodiment of the invention fixed cutting blade formed self-sprung. in principle but can also be attached to the cutting cylinder first Cutting knife be designed self-springing.

Nach einer Weiterbildung der Erfindung weist das eigenfedernde Schneidmesser wenigstens eine Ausnehmung auf. Diese Ausnehmung ist gemäss einer Weiterbildung der Erfindung ein Schlitz, der sich wenigstens parallel zu einer Schneidkante erstreckt und in den diese Schneidkante einfedern kann. Der Schlitz ist vorzugsweise so ausgebildet, dass er zwischen zwei Schneidkanten verläuft. Ein besonderer Vorteil dieser Ausführung wird darin gesehen, dass dieses eigenfedernde Schneidmesser besonders einfach nachgeschliffen werden kann, da zwei Schneidkanten bildende Flächen in einer Ebene liegen. Eine dieser Flächen kann mit der einer angrenzenden Anschlagfläche zur Positionierung des eigenfedernden Schneidmessers verwendet werden, während die andere Schneidkante aktiv ist. Durch Wenden des Schneidmessers kann die Schneidkante gewechselt werden.According to a development of the invention, the self-sprung Cutting knife at least one recess. This recess is in accordance with a development of the invention a Slit extending at least parallel to a cutting edge extends and in which this cutting edge can spring. Of the Slot is preferably formed to be between two Cutting edges runs. A particular advantage of this design is seen in this, that self-resilient cutting knife can be easily reground, because two Cutting edges forming surfaces lie in a plane. A These surfaces can be compared with an adjacent stop surface used for positioning of self-resilient cutting blade while the other cutting edge is active. By turning of the cutting blade, the cutting edge can be changed.

Nach einer Weiterbildung der Erfindung weist das eigenfedernde Schneidmesser zwei Schlitze auf und jeder dieser Schlitze ist zwischen zwei Schneidkanten angeordnet, die beim Schneiden in den gemeinsamen Schlitz einfedern. Bei dieser Schneidvorrichtung weist das eigenfedernde Schneidmesser vier Schneidkanten auf, die durch Wenden des Schneidmessers gewechselt werden können. Zudem sind lediglich zwei Schneidkanten bildende Flächen erforderlich und entsprechend ist das Nachschleifen vergleichsweise einfach. Auch bei dieser Ausführung ist jeweils vorgesehen, dass eine nicht aktive Schneidkante an einer Anschlagfläche anliegt und damit das eigenfedernde Schneidmesser positioniert. According to a development of the invention, the self-sprung Cutting knife two slots on and each of these slots is arranged between two cutting edges when cutting in the common slot einfedern. In this cutting device the self-locking cutting knife has four Cutting edges, which changed by turning the cutting blade can be. In addition, only two cutting edges forming surfaces required and accordingly that is Regrinding comparatively easy. Also in this version is each provided that a non-active Cutting edge rests against a stop surface and thus the eigenfedernde Cutting knife positioned.

Nach einer Weiterbildung der Erfindung ist an dem eigenfedernden Schneidmesser ein Abdeckbalken angelegt, der eine vordere Kante aufweist, die im Wesentlichen parallel und im Abstand zu einer Schneidkante verläuft. Mit dem Abdeckbalken kann die aktive Schneidkante und damit der federnde Bereich des Schneidmesser stabilisiert werden. Vorzugsweise ist der Abdeckbalken verschiebbar, sodass unerwünschte Schwingungen des federnden Bereichs des Schneidmessers wirkungsvoll verhindert werden können.According to a development of the invention is to the self-resilient Cutting knife created a cover bar, which is a front Edge, which is substantially parallel and at a distance runs to a cutting edge. With the cover bar can be the active cutting edge and thus the springy area the cutting blade to be stabilized. Preferably, the Sliding cover movable, so unwanted vibrations the resilient portion of the cutting blade effectively prevented can be.

Nach einer Weiterbildung der Erfindung ist das eigenfedernde Schneidmesser abgesetzt. Dadurch wird ein federnder Bereich geschaffen, der so gehalten ist, dass er freistehend ist. Bei dieser Ausführung weist das eigenfedernde Schneidmesser vorzugsweise zwei Schneidkanten auf, die gewechselt werden können.According to a development of the invention is the eigenfedernde Cut off knife. This will be a resilient area created, which is held so that it is free-standing. at this embodiment, the self-locking cutting blade preferably two cutting edges, which can be changed.

Nach einer Weiterbildung der Erfindung ist das eigenfedernde Schneidmesser wenigstens im Bereich einer aktiven Schneidkante vergleichsweise dünn ausgebildet und in diesem Bereich freistehend gelagert. Dieses Schneidmesser weist vorzugsweise ebenfalls vier Schneidkanten auf.According to a development of the invention is the eigenfedernde Cutting knife at least in the area of an active cutting edge comparatively thin and in this area free-standing. This cutting blade preferably has also four cutting edges.

Weitere vorteilhafte Merkmale ergeben sich aus den abhängigen Patentansprüchen, der nachfolgenden Beschreibung sowie der Zeichnung.Further advantageous features emerge from the dependent Claims, the following description and the Drawing.

Ausführungsbeispiele der Erfindung werden nachfolgend anhand der Zeichnung näher erläutert. Es zeigen:

Fig. 1
schematisch eine Ansicht einer erfindungsgemässen Schneidvorrichtung,
Fig. 2
schematisch ein vergrösserter Ausschnitt aus der Figur 1,
Fig. 3
schematisch eine Teilansicht einer erfindungsgemässen Schneidvorrichtung nach einer Variante und
Fig. 4
schematisch eine Teilansicht einer erfindungsgemässen Schneidvorrichtung gemäss einer weiteren Variante.
Embodiments of the invention will be explained in more detail with reference to the drawing. Show it:
Fig. 1
1 is a schematic view of a cutting device according to the invention;
Fig. 2
schematically an enlarged detail of FIG. 1,
Fig. 3
schematically a partial view of an inventive cutting device according to a variant and
Fig. 4
schematically a partial view of an inventive cutting device according to another variant.

Die in den Figuren 1 und 2 gezeigte Schneidvorrichtung 1 dient zum Schneiden einer endlosen Bahn 12, insbesondere einer Papierbahn in gleiche Abschnitte. Der Transport der Bahn 12 erfolgt kontinuierlich in Richtung des Pfeiles 13, wobei diese Bahn 12 geschoben und gezogen wird. Mittel für den Transport der Bahn 12 sind dem Fachmann gut bekannt und brauchen hier nicht erläutert zu werden. In Figur 1 wird die Bahn 12 somit in Richtung des Pfeils 25 von links nach rechts transportiert.The cutting device 1 shown in Figures 1 and 2 is used for cutting an endless web 12, in particular a paper web in equal sections. The transport of the web 12 takes place continuously in the direction of arrow 13, these being Rail 12 is pushed and pulled. Means for transportation the web 12 are well known to those skilled in the art and need it here not to be explained. In Figure 1, the web 12 is thus transported in the direction of arrow 25 from left to right.

Um die Bahn 12 quer zur Transportrichtung zu schneiden, weist die Schneidvorrichtung 1 einen Schneidzylinder 8 auf, der um eine Rotationsachse 10 in Richtung des Pfeils 11 kontinuierlich gedreht wird. Der Antrieb zum Drehen des Schneidzylinders 8 sowie die Seitenschilder und Lager für diesen Schneidzylinder 8 sind an sich bekannt und hier nicht gezeigt.To cut the web 12 transversely to the transport direction has the cutting device 1 a cutting cylinder 8, the order a rotation axis 10 in the direction of arrow 11 continuously is turned. The drive for turning the cutting cylinder 8 and the side plates and bearings for this cutting cylinder 8 are known per se and not shown here.

An einem Umfang 9 des Schneidzylinders 8 ist wenigstens ein balkenförmiges Schneidmesser 4 befestigt, das wenigstens eine Schneidkante 14 besitzt. Diese Schneidkante 14 ist wenigstens so lang wie die Bahn 12 breit ist. Die Breite liegt beispielsweise im Bereich von 520 bis 740 mm. Der Schneidzylinder 8 weist wenigstens ein Schneidmesser 4 auf. Er kann jedoch auch mehrere solche Schneidmesser 4 aufweisen, sodass auch vergleichsweise schmale Streifen aus der Bahn 12 herausgeschnitten werden können.At a circumference 9 of the cutting cylinder 8 is at least one bar-shaped cutting blade 4 attached, the at least one Cutting edge 14 has. This cutting edge 14 is at least as long as the web 12 is wide. The width is for example in the range of 520 to 740 mm. The cutting cylinder 8 has at least one cutting blade 4. He can, however Also have several such cutting blade 4, so also comparatively narrow strips cut out of the web 12 can be.

Das Schneidmesser 4 arbeitet mit einem ebenfalls balkenförmigen Schneidmesser 5 zusammen, das an einem Träger 15 ortsfest gelagert ist. Zur Positionierung des Schneidmessers 5 am Träger 15 weist dieser eine Anschlagfläche 22 auf, an welcher das Schneidmesser 5 mit einer Fläche 23 anliegt. Das Schneidmesser 5 liegt zudem flächig an einer Fläche 31 des Trägers 15 an.The cutting blade 4 operates with a likewise bar-shaped Cutting knife 5 together, which is fixed to a carrier 15 is stored. For positioning the cutting blade 5 on the carrier 15, this has a stop surface 22, on which the Cutting blade 5 rests with a surface 23. The cutting knife 5 is also flat on a surface 31 of the carrier 15th at.

Das Schneidmesser 5 ist mit zwei Schlitzen 20 und 21 versehen, die sich vorzugsweise über die gesamte Länge des balkenförmigen Schneidmessers 5 erstrecken und die jeweils stirnseitig offen sind. Der Schlitz 20 befindet sich im Wesentlichen mittig zwischen zwei Schneidkanten 18b und 18a, wobei die Schneidkante 18b beruhigt und die Schneidkante 18a aktiv ist. Durch den Schlitz 20 werden zwei Bereiche 32 und 33 gebildet, die vergleichsweise dünnwandig und federelastisch auslenkbar sind. Der Bereich 33 ist gemäss Figur 2 beruhigt, während der Bereich 32 zum Schlitz 20 hin auslenkbar ist. Trifft das Schneidmesser 4 auf die Schneidkante 18a, so kann diese in Richtung des Pfeils 19 in den Schlitz 20 einfedern. Die Auslenkung in Richtung des Pfeils 19 ist hierbei allerdings vergleichsweise klein und beträgt wenige Hundertstel Millimeter. Das Schneidmesser 5 kann so gewendet werden, dass die Schneidkante 18a sich im Bereich der Anschlagfläche 22 befindet und somit beruhigt ist, während die Schneidkante 18b aktiv ist.The cutting blade 5 is provided with two slots 20 and 21, preferably over the entire length of the bar-shaped Cutting knife 5 extend and each end face are open. The slot 20 is located substantially centrally between two cutting edges 18b and 18a, the Cutting edge 18b calmed down and the cutting edge 18a is active. Through the slot 20 two areas 32 and 33 are formed, the relatively thin-walled and resiliently deflectable are. The region 33 is calmed according to Figure 2, while the Area 32 to the slot 20 is deflected out. That's true Cutting knife 4 on the cutting edge 18 a, so this can in Press in the direction of arrow 19 in the slot 20. The deflection in the direction of arrow 19, however, this is comparatively small and is a few hundredths of a millimeter. The cutting blade 5 can be turned so that the cutting edge 18 a is in the area of the stop surface 22 and thus calmed while the cutting edge 18b is active.

Das Schneidmesser 5 weist einen weiteren Schlitz 21 sowie zwei weitere Schneidkanten 18c und 18d auf. Insgesamt besitzt das Schneidmesser 5 somit vier Schneidkanten 18a, 18b, 18c und 18d. Sämtliche Schneidkanten können gewechselt werden. Das Nachschleifen erfolgt an den Flächen 23 und 24, wobei jeweils gleichzeitig zwei Schneidkanten abgeschliffen werden können.The cutting blade 5 has a further slot 21 and two further cutting edges 18c and 18d. Overall, this has Cutting knife 5 thus four cutting edges 18a, 18b, 18c and 18d. All cutting edges can be changed. The Regrinding takes place on the surfaces 23 and 24, respectively simultaneously two cutting edges can be ground off.

Das Schneidmesser 5 weist eine Fläche 26 auf, die eben und parallel zur Fläche 31 des Trägers 15 ist. An dieser Fläche 26 und in der Nähe der Schneidkante 18a liegt ein Abdeckbalken 16 am Schneidmesser 5 an. Eine vordere Kante 17 des Abdeckbalkens 16 verläuft parallel zur Schneidkante 18a. Mit diesem Abdeckbalken 16 wird der federnde Bereich 32 stabilisiert und dadurch werden unerwünschte Schwingungen dieses Bereichs 32 vermieden. Vorzugsweise ist der Abdeckbalken 16 so verschiebbar, dass der Abstand der Kante 17 zur Schneidkante 18a eingestellt werden kann. Damit ist eine optimale Abstützung des federnden Bereichs 32 möglich.The cutting blade 5 has a surface 26 which is flat and parallel to the surface 31 of the carrier 15 is. On this surface 26 and near the cutting edge 18a is a cover bar 16 on the cutting blade 5 at. A front edge 17 of the cover bar 16 runs parallel to the cutting edge 18a. With this cover bar 16, the resilient portion 32 is stabilized and thereby unwanted vibrations of this area 32 are avoided. Preferably, the cover bar 16 is displaceable, that the distance of the edge 17 adjusted to the cutting edge 18a can be. This is an optimal support of the resilient Area 32 possible.

Die beiden Schneidmesser 4 und 5 bzw. die Schneidkanten 14 und 18a verlaufen in der Regel nicht achsparallel. Grundsätzlich ist jedoch auch eine achsparallele Anordnung möglich.The two cutting blades 4 and 5 and the cutting edges 14 and 18a are generally not parallel to the axis. in principle However, an axially parallel arrangement is possible.

Das Schneidmesser 5 ist somit eigenfedernd und dadurch wird erreicht, dass das Schneidmesser 5 wie eine Feder wirkt und erheblich toleranter bezüglich Abstandsänderungen ist. Bewegt sich die Achse 10 in Folge von Temperaturänderungen an den Seitenschildern nach oben oder nach unten, so können solche Abstandsänderungen durch eine federnde Auslenkung der Schneidkante 18a ohne wesentlichen zusätzlichen Verschleiss und ohne Verminderung der Schnittqualität an dieser Schneidkante 18a aufgenommen werden. Damit kann die Standzeit des Schneidmessers 5 wesentlich verlängert werden.The cutting blade 5 is thus self-springing and thereby becomes achieved that the cutting blade 5 acts like a spring and is considerably more tolerant of changes in distance. Emotional the axis 10 as a result of temperature changes to the Side signs up or down, such may Changes in distance due to a resilient deflection of the cutting edge 18a without significant additional wear and without Reduction of the cut quality at this cutting edge 18a be recorded. This can reduce the service life of the cutting blade 5 are significantly extended.

Bei der Schneidvorrichtung 1 ist das Schneidmesser 5 eigenfedernd ausgebildet. Grundsätzlich könnte alternativ das Schneidmesser 4 eigenfedernd und das Schneidmesser 5 starr ausgebildet sein. Grundsätzlich ist auch eine Ausführung denkbar, bei welcher beide Schneidmesser 4 und 5 eigenfedernd ausgebildet sind.In the cutting device 1, the cutting blade 5 is inherently springing educated. Basically, alternatively Cutter 4 self-springing and the cutting blade 5 rigid be educated. Basically, a design is conceivable, in which both cutting blades 4 and 5 formed own spring are.

Die Figur 3 zeigt eine Schneidvorrichtung 2 nach einer Variante, bei welcher ein eigenfederndes Schneidmesser 6 an einem Träger 15' gelagert ist. Der Träger 15' weist im Bereich einer Schneidkante 27 eine Ausnehmung 28 auf, welche eine Auslenkung der Schneidkante 27 ermöglicht. Das Schneidmesser 6 ist vergleichsweise dünn ausgebildet, was die genannte federnde Auslenkung ermöglicht. Das Schneidmesser 6 ist ebenfalls an der Anschlagfläche 22 positioniert. Bei der Auslenkung reibt das Schneidmesser 6 somit an der Anschlagfläche 22.FIG. 3 shows a cutting device 2 according to a variant, in which a self-locking cutting blade 6 at a Carrier 15 'is mounted. The carrier 15 'has in the region of Cutting edge 27 has a recess 28 which a deflection the cutting edge 27 allows. The cutting blade 6 is comparatively thin, what the said elastic deflection allows. The cutting blade 6 is also on the Stop surface 22 is positioned. When the deflection rubs that Cutting knife 6 thus at the stop surface 22nd

Die Figur 4 zeigt eine Schneidvorrichtung 3 nach einer weiteren Variante, bei der ebenfalls ein eigenfederndes Schneidmesser 7 vorgesehen ist. Dieses ist an einem Träger 15" gelagert. Das Schneidmesser 7 ist abgesetzt und besitzt zwei Schneidkanten 29a und 29b, wobei die Schneidkante 29a aktiv und die Schneidkante 29b beruhigt ist. Zwischen einem federnden Bereich 34 und dem Träger 15" ist ein spaltförmiger Zwischenraum 30 vorgesehen, der eine Auslenkung des federnden Bereichs 34 beim Schneiden ermöglicht. Auch bei der Schneidvorrichtung 3 ist ein Abdeckbalken 16 vorgesehen. Bei dieser Ausführung weist das Schneidmesser 7 allerdings lediglich zwei wechselbare Schneidkanten 29a und 29b auf. Die Positionierung des Schneidmessers 7 erfolgt an einer Anschlagfläche 35.FIG. 4 shows a cutting device 3 after another Variant, in which also a self-springing cutting knife 7 is provided. This is mounted on a support 15 ". The cutting blade 7 is offset and has two Cutting edges 29a and 29b, wherein the cutting edge 29a active and the cutting edge 29b is settled. Between a springy Region 34 and the carrier 15 "is a gap-shaped gap 30 is provided, which is a deflection of the resilient portion 34 allows cutting. Also with the cutting device 3, a cover bar 16 is provided. At this Execution, the cutting blade 7, however, only two exchangeable cutting edges 29a and 29b. The positioning the cutting blade 7 takes place on a stop surface 35.

Claims (10)

Schneidvorrichtung zum Schneiden einer Materialbahn (12), mit einem rotierbaren Schneidzylinder (8), der an einem Umfang (9) wenigstens ein erstes Schneidmesser .(4) aufweist, das mit einem feststehenden zweiten Schneidmesser (5) zusammenwirkt, um die Materialbahn (12) in ihrer Querrichtung zu schneiden, dadurch gekennzeichnet, dass wenigstens eines der beiden Schneidmesser (4, 5) eigenfedernd ausgebildet ist.Cutting device for cutting a web of material (12), comprising a rotatable cutting cylinder (8) having on a circumference (9) at least one first cutting blade (4) cooperating with a stationary second cutting blade (5) to move the web of material (12 ) in its transverse direction, characterized in that at least one of the two cutting blades (4, 5) is formed self-resilient. Schneidvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das feststehende Schneidmesser (5) eigenfedernd ausgebildet istCutting device according to claim 1, characterized in that the fixed cutting blade (5) is formed own spring Schneidvorrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das eigenfedernde Schneidmesser (5) wenigstens eine Ausnehmung (20, 21) aufweist. Cutting device according to claim 1 or 2, characterized in that the self-locking cutting blade (5) has at least one recess (20, 21). Schneidvorrichtung nach Anspruch 3, dadurch gekennzeichnet, dass sich die Ausnehmung (28) parallel zu wenigstens einer Schneidkante (18a, 18b, 18c, 18d) erstreckt und in diese Schneidkante (18a) einfedern kann.Cutting device according to claim 3, characterized in that the recess (28) extends parallel to at least one cutting edge (18a, 18b, 18c, 18d) and can spring into this cutting edge (18a). Schneidvorrichtung nach Anspruch 4, dadurch gekennzeichnet, dass das eigenfedernde Schneidmesser (5) zwei im Abstand zueinander angeordnete Schlitze (20, 21) aufweist und dass jeder Schlitz (20, 21) zwischen zwei Schneidkanten (18a, 18b, 18c, 18d) angeordnet ist, die beim Schneiden in den gemeinsamen Schlitz (20, 21) einfedern.Cutting device according to claim 4, characterized in that the self-locking cutting blade (5) has two spaced-apart slots (20, 21) and that each slot (20, 21) between two cutting edges (18a, 18b, 18c, 18d) is arranged , which spring into the common slot (20, 21) during cutting. Schneidvorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass das eigenfedernde Schneidmesser (5) vier im Abstand zueinander angeordnete Schneidkanten (18a, 18b, 18c, 18d) aufweist, wobei eine Schneidkante (18b) sich an einer Anschlagfläche (22) befindet, an welcher das eigenfedernde Schneidmesser (5) positioniert ist. Cutting device according to one of claims 1 to 5, characterized in that the self-locking cutting blade (5) has four mutually spaced cutting edges (18a, 18b, 18c, 18d), wherein a cutting edge (18b) is located on a stop surface (22) on which the self-locking cutting blade (5) is positioned. Schneidvorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass an das eigenfedernde Schneidmesser (5) ein Abdeckbalken (16) angelegt ist, der eine Vorderkante (17) aufweist, die parallel und im Abstand zu einer aktiven Schneidkante (18a) verläuft.Cutting device according to one of claims 1 to 6, characterized in that on the selbstfedernde cutting blade (5) a cover bar (16) is applied, which has a front edge (17) which is parallel and spaced from an active cutting edge (18a). Schneidvorrichtung nach Anspruch 7, dadurch gekennzeichnet, dass der Abdeckbalken (16) verschiebbar gelagert ist.Cutting device according to claim 7, characterized in that the cover bar (16) is displaceably mounted. Schneidvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das eigenfedernde Schneidmesser (7) abgesetzt ist.Cutting device according to claim 1, characterized in that the self-locking cutting blade (7) is discontinued. Schneidvorrichtung nach Anspruch 1, dadurch gekennzeichnet, dass das eigenfedernde Schneidmesser (6) wenigstens im Bereich einer Schneidkante (27) vergleichsweise dünn ausgebildet und in diesem Bereich freistehend gelagert ist.Cutting device according to claim 1, characterized in that the self-locking cutting blade (6) is formed comparatively thin at least in the region of a cutting edge (27) and is mounted free-standing in this area.
EP20030405758 2003-10-20 2003-10-20 Cutting device for cutting web material Withdrawn EP1525960A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP20030405758 EP1525960A1 (en) 2003-10-20 2003-10-20 Cutting device for cutting web material
JP2004303806A JP2005125488A (en) 2003-10-20 2004-10-19 Cutting-off apparatus for cutting off web of material
US10/967,920 US20050109179A1 (en) 2003-10-20 2004-10-19 Cutting apparatus for severing a web
CNA2004100869390A CN1616333A (en) 2003-10-20 2004-10-20 Cutting device for cutting web material

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EP20030405758 EP1525960A1 (en) 2003-10-20 2003-10-20 Cutting device for cutting web material

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ITTO20110008U1 (en) * 2011-02-11 2012-08-12 Sidel Spa Con Socio Unico STATIC BLADE GROUP
ITUB20152389A1 (en) * 2015-07-22 2017-01-22 Cps Company S R L Apparatus with quick-change blades, for cutting or for transversely drilling, for the whole width and in a progressive way, of mobile tapes, of paper, plastic or other materials.
US10330449B2 (en) * 2015-07-24 2019-06-25 Raytheon Company Dispenser and dispensing system for radar jamming material
CN107007394A (en) * 2017-05-18 2017-08-04 杭州可靠护理用品股份有限公司 The former of paper diaper stereo enclosure
CN106983601A (en) * 2017-05-18 2017-07-28 杭州可靠护理用品股份有限公司 A kind of former of paper diaper stereo enclosure

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US4356745A (en) * 1979-11-12 1982-11-02 Dr. Otto C. Strecker Kg Synchronous rotary cross cutter
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EP0770477A2 (en) * 1995-10-24 1997-05-02 James River Corporation Of Virginia Method and apparatus for pinch perforating multi-ply web material
US6012371A (en) * 1996-04-12 2000-01-11 Brother Kyogo Kabushiki Kaisha Sheet cutting device
EP1186561A1 (en) * 2000-09-11 2002-03-13 Grapha-Holding AG Cutting device for cutting a web in a folding machine
EP1197305A2 (en) * 2000-05-19 2002-04-17 T.M.C. S.P.A. An apparatus for perforating a packing film
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GB386357A (en) * 1931-09-04 1933-01-19 Louis Stanley Johnson Improvements in paper cutting machines
GB825724A (en) * 1957-08-30 1959-12-23 Paper Converting Machine Co Improvements in or relating to web cutting apparatus
US4356745A (en) * 1979-11-12 1982-11-02 Dr. Otto C. Strecker Kg Synchronous rotary cross cutter
EP0382689A2 (en) * 1989-02-07 1990-08-16 FABIO PERINI S.p.A. Perforating apparatus for transverse perforations in webs of paper-like material
EP0770477A2 (en) * 1995-10-24 1997-05-02 James River Corporation Of Virginia Method and apparatus for pinch perforating multi-ply web material
US6012371A (en) * 1996-04-12 2000-01-11 Brother Kyogo Kabushiki Kaisha Sheet cutting device
EP1197305A2 (en) * 2000-05-19 2002-04-17 T.M.C. S.P.A. An apparatus for perforating a packing film
EP1186561A1 (en) * 2000-09-11 2002-03-13 Grapha-Holding AG Cutting device for cutting a web in a folding machine
EP1306174A2 (en) * 2001-10-25 2003-05-02 Robert P. De Torre Resilent cutting blades

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CN1616333A (en) 2005-05-18
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