EP1724077B1 - Dispositif de coupe longitudinale ayant des moyens de réglage des couteaux supérieurs et inférieurs - Google Patents

Dispositif de coupe longitudinale ayant des moyens de réglage des couteaux supérieurs et inférieurs Download PDF

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Publication number
EP1724077B1
EP1724077B1 EP06009613A EP06009613A EP1724077B1 EP 1724077 B1 EP1724077 B1 EP 1724077B1 EP 06009613 A EP06009613 A EP 06009613A EP 06009613 A EP06009613 A EP 06009613A EP 1724077 B1 EP1724077 B1 EP 1724077B1
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EP
European Patent Office
Prior art keywords
knife
axial
blade
relative
upper 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.)
Active
Application number
EP06009613A
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German (de)
English (en)
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EP1724077A1 (fr
Inventor
Hansjörg Klein
Jürgen Rau
Markus Kremer
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.)
Bielomatik Leuze GmbH and Co KG
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Bielomatik Leuze GmbH and Co KG
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Publication of EP1724077A1 publication Critical patent/EP1724077A1/fr
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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
    • 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
    • B26D7/2635—Means for adjusting the position of the cutting member for circular cutters

Definitions

  • the invention relates to a longitudinal cutting device for continuously conveyed material webs, in particular for paper or board webs, with a rotatable upper blade and with a rotatable lower blade and with a feed device, the upper blade and lower blade relative to each other in a cutting position transferred, and a method for delivering a and a lower blade of a slitter relative to each other for a cutting position.
  • Such a longitudinal cutting device is known from DE 34 19 843 A1 known.
  • the known longitudinal cutting device has a rotatable upper blade, which is designed as a circular blade.
  • a rotatable lower blade is provided, which is designed as a pot knife and is provided with a rotary drive.
  • the upper knife is designed as a pointed knife the lower blade so far axially delivered that the two knife edges of the upper and lower blade are pressed against each other in the cutting area. With a corresponding cutting process, this results in a sufficiently good cut quality.
  • the wear, in particular of the cutting region of the upper blade is relatively large, so that a regrinding of the knife edge or replacement of at least one knife may be required.
  • the document EP 1 283 094 A2 discloses the features of the preamble of claim 1.
  • the document DE 19 810 939 A1 describes a delivery unit.
  • the object of the invention is to provide a longitudinal cutting device and a method of the type mentioned, which cause a reduced wear of the knife edges with at least consistently good quality cut.
  • control means which control the feed device such that in the cutting position the upper blade and the lower blade to form a - relative to the axes of rotation of upper and lower blade - axial kerf are positioned contactlessly to each other. Due to the fact that the upper blade and the lower blade have an axial cutting gap relative to one another in the cutting position and are consequently positioned contactlessly relative to one another, wear and tear is prevented by the juxtaposition of the blade blades and any friction between the blade blades. Wear can therefore only be caused by the cutting of the material webs. The wear of the knife is considerably reduced by the solution according to the invention.
  • the axial kerf between the upper blade and the lower blade is preferably smaller than the thickness of the material web to be cut.
  • the solution according to the invention is particularly suitable for longitudinal cutting of paper webs. With the longitudinal cutting device according to the invention, preferably at least six 80 g paper webs can be cut over one another at the same time.
  • the upper blade is preferably designed as a pointed knife.
  • the lower blade is preferably designed as a pot knife, but can also be designed as a sharp knife.
  • the upper blade is adjusted relative to the lower blade.
  • the lower blade can be adjusted relative to a fixed upper blade.
  • the control means are designed so that a delivery of upper blade and lower blade relative to each other is initially made to touch the knife edges together and then the upper blade is reset by a small amount, which corresponds to the width of the kerf.
  • the upper blade and the lower blade are each assigned a rotary drive. This makes it possible to set a suitable cutting speed for both the lower blade and the upper blade, which may differ from the conveying speed of the material web to be cut.
  • the upper blade and the associated rotary drive are mounted on a carriage assembly which is axially displaceable by the Zustellech. As a result, a linear adjustment of the upper blade is ensured in a simple manner.
  • the infeed unit translates a return means acting on the carriage assembly of the upper knife to axially return the upper knife from an abutting position on the lower knife.
  • restoring means may preferably be provided a return spring whose restoring force can be dosed and limited by a hydraulic or pneumatic actuating means.
  • At least one sensor means is provided which detects an abutment position of the upper and lower blades and emits a corresponding signal to the control means, which causes the control means for activating the return means to the upper blade to a predetermined kerf axially from the lower blade remove.
  • a sensor means a displacement sensor or a force sensor can be provided. In the case of a displacement sensor, the exact position and adjustment of the lower blade must be recorded in addition to the travel of the upper blade.
  • the force sensor detects in particular the increased displacement resistance as soon as the upper blade is pressed against the lower blade.
  • the force sensor system must preferably be designed to be relatively sensitive in order not to cause incorrect positioning due to deformation of the upper blade after contact with the lower blade.
  • other types of sensor means are provided, which detect the time of contact of the upper blade on the lower blade and initiate the desired provision to the minor Thomasungspaltbetrag without contact.
  • the axial feed unit of the upper blade and an axial positioning of the lower blade Wegmessgeber are assigned, which are connected to the control means.
  • control means comprise an electronic control unit which evaluates the respective detected position values of the position encoders with respect to a common coordinate system and the feed unit or the return means depending on the result of a comparison with set nominal values for the axial kerf size between upper blade and lower blade controls accordingly.
  • control unit defines a common coordinate system for the axial travel ranges of the upper blade and the lower blade enables automatic and accurate kerf adjustment. Due to this configuration, it is advantageously also possible to set different kerf gaps depending on the driven material webs.
  • motor actuators and / or hydraulic and / or pneumatic actuating cylinders or actuators are provided as adjusting means for the axial adjustment of the upper blade and / or the lower blade.
  • motorized actuators in particular electric servomotors, preferably stepper motors are provided.
  • the object underlying the invention is achieved by a method having the features of claim 5, wherein, for advancing an upper and a lower blade of a longitudinal cutting device with the features of one of claims 1 to 4 relative to each other for a cutting position, instantaneous adjustment positions of the upper blade and the Undercutter are detected, the position detections are assigned to each other via a common frame, and the cutting position between the upper and lower blade is set so that a narrow kerf is present between the upper and lower blade, and wherein the upper blade initially so far delivered axially to the lower blade until the upper blade touches the lower blade, and then the upper blade is displaced back by an axial direction reversal by a small amount corresponding to the kerf to be set.
  • a precise cut gap setting is made possible in a particularly simple manner.
  • a reduction in wear is achieved while still maintaining good quality cut.
  • a longitudinal cutting device 1 serves for cutting continuously conveyed paper webs 2.
  • the longitudinal cutting device 1 has a designed as a pot knife lower blade 3, which rests against the paper web 2 from below.
  • a designed as a tip knife upper blade 4 is provided, which acts from above on the paper web 2.
  • Both the lower blade 3 and the upper blade 4 are each rotatably mounted about a horizontal axis of rotation.
  • the lower blade 3 is a rotary drive 5 and the upper blade 4 is assigned a rotary drive 6.
  • the upper blade 4 is rotatably mounted on a carriage assembly 7, 8, which is axially linearly displaceable by means of a feed unit 9 along a rotational axis.
  • the entire carriage assembly 7, 8 including the feed unit 9 by a lifting drive 14 in the vertical direction hereby a lifting drive 14 in the vertical direction .
  • the slide assembly 7, 8 is axially fixed by a in the present embodiment vertically acting adjusting means in the form of a blocking cylinder 10 on a slide guide SF only schematically shown.
  • the slide guide is arranged in a manner not shown fixed to a machine frame of the slitter 1.
  • the upper blade 4 carrying slide member 7, which is part of the carriage assembly 7, 8 is mounted relative to a settable slide member 8 of the carriage assembly along the axis of rotation of the upper blade 4 axially movable relative.
  • the relative mobility of the slide member 7 relative to the slide member 8 is during an axial movement the entire carriage assembly 7, 8 blocked by a horizontally effective actuator 11, which is designed as a pneumatic actuating cylinder and is pressure-loaded for the rigid transmission of motion between the carriage parts.
  • a return spring 12 In the opposite axial direction to the actuating cylinder 11 acts a return spring 12, which is supported on a rigidly arranged to the slide member 8 slide block of the carriage assembly 7, 8.
  • a mechanical axial stop 13 On the opposite side of the return spring 12, a mechanical axial stop 13 is provided which limits the axially by the return spring 12 exercisable on the bearing carriage 7 movement path and also rigidly connected to the slide member 8.
  • the adjusting cylinders 9 to 11 are designed as pneumatic actuating cylinders, which are controlled by control members which are part of a central control unit S.
  • the core of the central control unit S is a microprocessor comprehensive electronic control, which controls the pneumatic control members and / or additional actuators in the manner described in more detail below.
  • a total of three control lines St 1 , St 2 and St 3 are provided, which extend from the central control unit S to the respective actuating cylinder.
  • the lower blade 3 is rotatably mounted in a manner not shown on a carriage, which is axially linearly adjustable along the axis of rotation of the lower blade 3.
  • a displacement sensor 16 detects the different horizontal positions of the pot knife 3 and directs corresponding position signals via a signal line S 2 to the central control unit S.
  • the entire carriage system 7, 8 for the outer cutter 4 is associated with a Wegmessgeber 15, the corresponding horizontal positions of the carriage system and in particular of the carriage part 8 detected and via a signal line S 1 to the central control unit S directs.
  • the relative movement of the carriage part 7 relative to the carriage part 8 within the overall carriage system is detected by a Wegmessgeber 17, which is also connected via a signal line S 3 to the central control unit S.
  • the pot knife 3 In order to transfer the upper blade 4 and the lower blade 3 in their Thomasstettung in which the at least one paper web 2 is cut, the pot knife 3 is first moved into a defined cutting position.
  • the corresponding cutting position of the lower blade 3 is transmitted via the signal line S 2 of the central control unit S and stored there arithmetically in a common coordinate system for the longitudinal cutting device 1 with corresponding horizontal and Vertikalkoordinaten joke.
  • the upper blade 4 is lowered on the one hand by the lifting drive 14 vertically into a paper web 2 intersecting position.
  • the upper blade 4 is axially - in the illustration after Fig. 1 from the right - the lower knife 3 delivered.
  • the actuating cylinder 11 is pressure-loaded and forms a rigid system between the slide part 8 and the slide part 7.
  • This rigid system is moved axially to the left by the actuating cylinder 9, whereby the upper blade 4 is moved axially in the direction of the lower blade 3.
  • the Wegmessgeber 15 Axialweg and the respective current position of the entire system is detected and compared with the set position of the lower blade 3.
  • the slide member 8 is fixed axially by pressurizing the actuating cylinder 10 and thus acting as a blocking brake for the slide member 8 relative to the frame-fixed slide guide SF.
  • the horizontal actuating cylinder 11 is relieved by being designed in particular without pressure.
  • the formed as a compression spring return spring 12 is effective, which axially resets the slide member 7 in the opposite direction to the feed direction. This inevitably removes the upper blade 4 by a certain amount of axial of the lower blade 3.
  • the carriage part 8 remains in its axially fixed position.
  • the axial return of the slide member 7 may be mechanically limited by the axial stop 13, which is preferably adjustable so that when reaching the end stop 13 automatically the desired axial cutting gap between the cutting tip of the upper blade 4 and the cutting edge of the lower blade 3 is reached.
  • the displacement transducer 17 detects the axially recessed path and transmits it via the signal line S 3 to the central control unit S, so that the central control unit S makes a comparison with a defined and matched to the respective material web to be cut setpoint for the axial kerf and depending on This comparison causes a corresponding control of the actuator.
  • the upper blade 4 is axially displaceable on the one hand together with the entire carriage system and, on the other hand, is also relatively movably resettable relative to the axially fixed slide part of the overall system.
  • a longitudinal cutting device 1a is provided, which is identical to the embodiment according to all essential features Fig. 1 is.
  • Fig. 2 For a more detailed explanation of the longitudinal cutting device 1a according to Fig. 2 Reference is therefore made to the detailed disclosure of the embodiment Fig. 1 directed.
  • Identical parts, portions and regions of the slitter 1a are provided with the same reference numerals as in the slitter 1 after Fig. 1 , Only essential difference in the embodiment according to Fig. 2 It is that here as a lower blade 3a no pot knife, but rather a pointed circular blade is provided analogous to the upper blade 4.
  • the lower blade 3a is provided with a rotary drive 5a which corresponds to the rotary drive 6 of the upper blade 4.
  • Analogous to the also executed as a sharp circular blade upper blade 4 and the lower blade 3a is arranged by a lifting drive 18 in addition to a horizontal Axialverlager pudding liftable to allow immersion in a corresponding paper web or in several, superposed paper webs 2.
  • the axial and thus horizontal adjustability of the lower blade 3a is analogous to the embodiment according to Fig. 1 achieved by a displacement sensor 16 which is provided on the carriage assembly of the lower blade 3a and communicates via a signal line S 2 with the central control unit S.
  • the described embodiments not only lead to consistent, but rather even improved cutting quality over the hitherto known prior art.
  • the upper and / or lower knives designed as pointed knives can be made particularly sharp, since no more wear must be calculated by touching the knives relative to one another. Thinner and therefore sharper knives lead to improved cutting quality.
  • the life of upper blade 4 and lower blade 3, 3a is significantly increased over the prior art.
  • the driving of the upper blade 4 by the rotary drive 6 allows the synchronization of the upper blade 4 or a slight lead over the continuously moving material web, without any contact with the lower blade 3, 3a is present.
  • FIG. 1 and 2 schematically only a knife holder portion for upper blade and lower blade of the longitudinal cutting device is shown, without remaining parts of the slitter are shown. The remaining, not shown parts of the longitudinal cutting device correspond to the prior art.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Details Of Cutting Devices (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Harvester Elements (AREA)
  • Shearing Machines (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)

Claims (5)

  1. Dispositif de coupe longitudinale pour des bandes de matériau transportées en continu, notamment pour des bandes de papier ou de carton, comprenant un couteau supérieur rotatif ainsi qu'un couteau inférieur rotatif, auxquels est à chaque fois associé un entraînement en rotation (5, 6, 5a), et comprenant un dispositif d'avance, qui déplace le couteau supérieur (4) et le couteau inférieur (3) l'un par rapport à l'autre dans une position de coupe, des moyens de commande (S, St, St1 à St3 ; 9-11) étant prévus pour commander le dispositif d'avance de telle sorte que dans la position de coupe, le couteau supérieur (4) et le couteau inférieur (3, 3a) soient positionnés l'un par rapport à l'autre sans contact en formant une fente de coupe axiale, par rapport aux axes de rotation du couteau supérieur et du couteau inférieur, caractérisé en ce que le couteau supérieur (4) et l'entraînement en rotation associé (6) sont montés sur un agencement de chariot (7, 8), qui comprend au moins deux parties de chariot (7, 8) déplaçables l'une par rapport à l'autre, qui peuvent être déplacées axialement par une unité d'avance (9) du dispositif d'avance, la partie de chariot (7) portant le couteau supérieur (4) étant montée, par rapport à une partie de chariot (8) pouvant être fixée, de manière déplaçable axialement le long de l'axe de rotation du couteau supérieur (4), et le dispositif d'avance comprenant un moyen de rappel (12) qui agit sur la partie de chariot (7) portant le couteau supérieur (4), afin de ramener axialement le couteau supérieur (4) depuis une position d'appui contre le couteau inférieur, et en ce que l'agencement de chariot (7, 8) présente un actionneur (11) qui fixe les parties de chariot (7, 8) l'une par rapport à l'autre ou les libère en vue d'un mouvement relatif.
  2. Dispositif de coupe longitudinale selon la revendication 1, caractérisé en ce qu'au moins un moyen de capteur (15 à 17) est prévu, lequel détecte une position d'appui du couteau supérieur et du couteau inférieur (4, 3, 3a), et émet un signal correspondant aux moyens de commande (S), qui autorise les moyens de commande à activer le moyen de rappel (12), afin d'éloigner le couteau supérieur (4) axialement du couteau inférieur (3, 3a) d'une fente de coupe prédéterminée.
  3. Dispositif de coupe longitudinale selon l'une quelconque des revendications précédentes, caractérisé en ce que l'unité d'avance axiale du couteau supérieur et une unité de positionnement axiale du couteau inférieur sont associées à des capteurs de position (15, 16), qui sont raccordés aux moyens de commande.
  4. Dispositif de coupe longitudinale selon la revendication 3, caractérisé en ce que les moyens de commande comprennent une unité de commande électronique (S), qui analyse les valeurs de position des capteurs de position (15, 16) détectées dans chaque cas par rapport à un système de coordonnées commun, et qui commande l'unité d'avance ou le moyen de rappel de manière correspondante, en fonction du résultat d'une comparaison avec des valeurs de consigne ajustées pour des dimensions axiales de la fente de coupe entre le couteau supérieur et le couteau inférieur.
  5. Procédé pour faire avancer l'un par rapport à l'autre pour une position de coupe un couteau supérieur et un couteau inférieur d'un dispositif de coupe longitudinale ayant les caractéristiques de l'une quelconque des revendications 1 à 4, dans lequel des positions de réglage temporaires du couteau supérieur et du couteau inférieur sont détectées, les détections de position étant affectées les unes aux autres par le biais d'un système de référence commun, et en ce que la position de coupe entre le couteau supérieur et le couteau inférieur (4, 3, 3a) est ajustée de telle sorte qu'une petite fente de coupe axiale soit prévue entre le couteau supérieur et le couteau inférieur (4, 3, 3a), et dans lequel le couteau supérieur (4) est avancé d'abord axialement vers le couteau inférieur (3) dans une mesure telle que le couteau supérieur (4) parvienne en contact avec le couteau inférieur (3, 3a), et qu'ensuite le couteau supérieur (4) soit déplacé vers l'arrière par une inversion de direction axiale dans une faible mesure, qui correspond à la fente de coupe à ajuster.
EP06009613A 2005-05-17 2006-05-10 Dispositif de coupe longitudinale ayant des moyens de réglage des couteaux supérieurs et inférieurs Active EP1724077B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005023720A DE102005023720A1 (de) 2005-05-17 2005-05-17 Längsschneidvorrichtung für kontinuierlich geförderte Materialbahnen und Verfahren hierfür

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EP1724077A1 EP1724077A1 (fr) 2006-11-22
EP1724077B1 true EP1724077B1 (fr) 2010-03-31

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EP06009613A Active EP1724077B1 (fr) 2005-05-17 2006-05-10 Dispositif de coupe longitudinale ayant des moyens de réglage des couteaux supérieurs et inférieurs

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EP (1) EP1724077B1 (fr)
AT (1) ATE462541T1 (fr)
DE (2) DE102005023720A1 (fr)
ES (1) ES2343742T3 (fr)

Families Citing this family (1)

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Publication number Priority date Publication date Assignee Title
EP1952956A1 (fr) * 2007-02-02 2008-08-06 Müller Martini Holding AG Dispositif de découpe pour des produits imprimés en formation imbriquée

Citations (1)

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Publication number Priority date Publication date Assignee Title
DE19810939A1 (de) * 1998-03-13 1999-09-16 Jagenberg Papiertech Gmbh Längsschneidevorrichtung zum Schneiden von laufenden Materialbahnen

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JPS5943114U (ja) * 1982-09-16 1984-03-21 北海製「あ」株式会社 スリツタ装置における刃合せ装置
DE3419843C2 (de) * 1984-05-26 1986-04-03 Jagenberg AG, 4000 Düsseldorf Längsschneideeinrichtung für Bahnmaterial, insbesondere Papier- und Kartonbahnen
DE3938278C2 (de) * 1989-11-17 1993-12-09 Jagenberg Ag Vorrichtung zum Positionieren von entlang Führungen bewegbaren Schlitten oder dergleichen
GB9414803D0 (en) * 1994-07-22 1994-09-14 Lamberton & Co Ltd Inspection system
DE29620431U1 (de) * 1996-11-23 1997-02-06 Goebel Gmbh Maschf Einrichtung zum Schneiden
DE19924454B4 (de) * 1999-05-28 2008-09-11 Robert Nyblad Gmbh Vorrichtung zum Schneiden von Materialbahnen
DE10037709A1 (de) * 2000-08-02 2002-02-14 Gaemmerler Ag Schneidvorrichtung
US6692424B2 (en) * 2001-08-01 2004-02-17 Gammerler Corporation Rotary trimmer apparatus and method
DE10143508A1 (de) * 2001-09-05 2003-03-20 Biforce Anstalt Vaduz Verfahren zur Schneidspalteinstellung
DE10215701A1 (de) * 2002-04-10 2003-10-30 Bilstein Spezialfab Wilhelm Messerhalter mit pneumatischer Schnittkrafteinstellung
US20040173074A1 (en) * 2003-03-06 2004-09-09 Li Ming M. Apparatus for cutting sheet material

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Publication number Priority date Publication date Assignee Title
DE19810939A1 (de) * 1998-03-13 1999-09-16 Jagenberg Papiertech Gmbh Längsschneidevorrichtung zum Schneiden von laufenden Materialbahnen

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ES2343742T3 (es) 2010-08-09
ATE462541T1 (de) 2010-04-15
EP1724077A1 (fr) 2006-11-22
DE502006006549D1 (de) 2010-05-12
DE102005023720A1 (de) 2006-11-23

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