EP1724077A1 - Dispositif de coupe logitudinale ayant des moyens de réglage des couteaux supérieurs et inférieurs - Google Patents

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

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Publication number
EP1724077A1
EP1724077A1 EP06009613A EP06009613A EP1724077A1 EP 1724077 A1 EP1724077 A1 EP 1724077A1 EP 06009613 A EP06009613 A EP 06009613A EP 06009613 A EP06009613 A EP 06009613A EP 1724077 A1 EP1724077 A1 EP 1724077A1
Authority
EP
European Patent Office
Prior art keywords
blade
lower blade
upper blade
cutting device
longitudinal cutting
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.)
Granted
Application number
EP06009613A
Other languages
German (de)
English (en)
Other versions
EP1724077B1 (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
Original Assignee
Bielomatik Leuze GmbH and Co KG
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.)
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Publication date
Application filed by Bielomatik Leuze GmbH and Co KG filed Critical Bielomatik Leuze GmbH and Co KG
Publication of EP1724077A1 publication Critical patent/EP1724077A1/fr
Application granted granted Critical
Publication of EP1724077B1 publication Critical patent/EP1724077B1/fr
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Anticipated expiration legal-status Critical

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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 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 are provided 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 the 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 preferably 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.
  • a provision of the upper blade is not necessary in this variant, since no approach of the knife to each other is made to the touch.
  • 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 feed unit comprises a return means, which acts on the carriage assembly of the upper blade to axially reset the upper blade from an abutment position on the lower blade.
  • 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 in that the position detections are assigned to each other via a common reference system, and that the cutting position between the upper and lower blade is adjusted so that a narrow cutting gap between the upper and lower blade is present. As a result, a reduction in wear is achieved while still maintaining good quality cut.
  • the upper blade is initially as far as axially delivered to the lower blade until the upper blade touches the lower blade, and that subsequently the upper blade is displaced by axial direction reversal by a small amount, which corresponds to the adjusted cutting gap.
  • a longitudinal cutting device 1 according to FIG. 1 is used for cutting continuously conveyed paper webs 2.
  • the longitudinal cutting device 1 has a bottom knife 3 designed as a pot knife, 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 an actuator 9 along a rotation axis.
  • the entire carriage assembly 7, 8 including the actuator 9 hereby referred to as a lifting drive 14 in the vertical direction to allow immersion of the upper blade 4 from above into the paper web 2 and in a correspondingly reverse manner lifting the upper blade 4 on the paper web. 2 to allow upwards.
  • 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 delivered axially - in the illustration according to FIG. 1 from the right - to the lower blade 3.
  • 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 Wegmessgeber 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 to be cut material 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 of Fig. 1 with respect to all essential features.
  • the longitudinal cutting device 1a of FIG. 2 reference is therefore made to the detailed disclosure of the embodiment of FIG. Identical parts, sections and regions of the longitudinal cutting device 1a are provided with the same reference numerals as in the longitudinal cutting device 1 according to Fig. 1.
  • the only significant difference in the embodiment of Fig. 2 is that here as a lower blade 3a no pot knife, but rather a pointed Circular knife 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.
  • the axial and thus horizontal adjustability of the lower blade 3a is analogous to the embodiment of FIG. 1 achieved by a displacement sensor 16 which is provided on the carriage assembly of the lower blade 3a and is connected via a signal line S 2 with the central control unit S.
  • the intersection of the sharp circular blade in the cutting area can be greatly reduced because no pressure between the knife edges. This reduces the displacement and deformation of the paper web during the cutting process.
  • 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 each other. 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.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Details Of Cutting Devices (AREA)
  • Harvester Elements (AREA)
  • Shearing Machines (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
EP06009613A 2005-05-17 2006-05-10 Dispositif de coupe longitudinale ayant des moyens de réglage des couteaux supérieurs et inférieurs Not-in-force 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

Publications (2)

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

Family

ID=36940739

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06009613A Not-in-force EP1724077B1 (fr) 2005-05-17 2006-05-10 Dispositif de coupe longitudinale ayant des moyens de réglage des couteaux supérieurs et inférieurs

Country Status (4)

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

Cited By (1)

* Cited by examiner, † Cited by third party
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 (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506577A (en) * 1982-09-16 1985-03-26 Hokkai Can Co., Ltd. Slitter apparatus
DE3419843A1 (de) * 1984-05-26 1985-11-28 Jagenberg AG, 4000 Düsseldorf Laengsschneideeinrichtung fuer bahnmaterial, insbesondere papier- und kartonbahnen
DE3938278A1 (de) * 1989-11-17 1991-05-23 Jagenberg Ag Vorrichtung zum positionieren von entlang fuehrungen bewegbaren schlitten oder dergleichen
WO1996003245A1 (fr) * 1994-07-22 1996-02-08 Lamberton & Company Limited Systeme d'inspection des bords
EP1177866A2 (fr) * 2000-08-02 2002-02-06 Gämmerler AG Procédé ainsi que dispositif pour surveiller la distance entre les lames dans une machine avec un couteau rotatif
EP1283094A2 (fr) * 2001-08-01 2003-02-12 Gämmerler AG Dispositif de massicotage ayant un outil rotatif

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29620431U1 (de) * 1996-11-23 1997-02-06 Maschinenfabrik Goebel Gmbh, 64293 Darmstadt Einrichtung zum Schneiden
DE19810939A1 (de) * 1998-03-13 1999-09-16 Jagenberg Papiertech Gmbh Längsschneidevorrichtung zum Schneiden von laufenden Materialbahnen
DE19924454B4 (de) * 1999-05-28 2008-09-11 Robert Nyblad Gmbh Vorrichtung zum Schneiden von Materialbahnen
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

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4506577A (en) * 1982-09-16 1985-03-26 Hokkai Can Co., Ltd. Slitter apparatus
DE3419843A1 (de) * 1984-05-26 1985-11-28 Jagenberg AG, 4000 Düsseldorf Laengsschneideeinrichtung fuer bahnmaterial, insbesondere papier- und kartonbahnen
DE3938278A1 (de) * 1989-11-17 1991-05-23 Jagenberg Ag Vorrichtung zum positionieren von entlang fuehrungen bewegbaren schlitten oder dergleichen
WO1996003245A1 (fr) * 1994-07-22 1996-02-08 Lamberton & Company Limited Systeme d'inspection des bords
EP1177866A2 (fr) * 2000-08-02 2002-02-06 Gämmerler AG Procédé ainsi que dispositif pour surveiller la distance entre les lames dans une machine avec un couteau rotatif
EP1283094A2 (fr) * 2001-08-01 2003-02-12 Gämmerler AG Dispositif de massicotage ayant un outil rotatif

Cited By (3)

* Cited by examiner, † Cited by third party
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
US8011280B2 (en) 2007-02-02 2011-09-06 Mueller Martini Holding Ag Rotary cutter for trimming printed products conveyed in an overlapping flow
CN101234491B (zh) * 2007-02-02 2011-11-16 米勒·马蒂尼控股公司 用于切割由印刷产品形成的鳞片流的装置

Also Published As

Publication number Publication date
DE102005023720A1 (de) 2006-11-23
EP1724077B1 (fr) 2010-03-31
ATE462541T1 (de) 2010-04-15
DE502006006549D1 (de) 2010-05-12
ES2343742T3 (es) 2010-08-09

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