EP1578683B1 - Schneidvorrichtung - Google Patents

Schneidvorrichtung Download PDF

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Publication number
EP1578683B1
EP1578683B1 EP03778374A EP03778374A EP1578683B1 EP 1578683 B1 EP1578683 B1 EP 1578683B1 EP 03778374 A EP03778374 A EP 03778374A EP 03778374 A EP03778374 A EP 03778374A EP 1578683 B1 EP1578683 B1 EP 1578683B1
Authority
EP
European Patent Office
Prior art keywords
blade
cutting device
frame
web
sheet metal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03778374A
Other languages
English (en)
French (fr)
Other versions
EP1578683A1 (de
Inventor
Leo Kurkinen
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.)
Valmet Technologies Oy
Original Assignee
Metso Paper Oy
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 Metso Paper Oy filed Critical Metso Paper Oy
Publication of EP1578683A1 publication Critical patent/EP1578683A1/de
Application granted granted Critical
Publication of EP1578683B1 publication Critical patent/EP1578683B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/04—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member
    • B26D1/06—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates
    • B26D1/08—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type
    • B26D1/085—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a linearly-movable cutting member wherein the cutting member reciprocates of the guillotine type for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/04—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators
    • B65H35/06—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with transverse cutters or perforators from or with blade, e.g. shear-blade, cutters or perforators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • B26D5/12—Fluid-pressure means

Definitions

  • This invention relates to a cutting device for cutting a web produced with a forming machine essentially in the cross direction of the web at the full width.
  • the above mentioned forming machine comprises especially paper and board machines, in which the web needs to be cut in the various stages of web forming and web processing. These stages include for example web coating and calendering. In particular at the final stage of web forming the web has gained such strength that some kind of blade is normally required for cutting. For using and positioning the blade in the forming machine, specific cutting devices have been developed, which allow cutting the web in one go essentially over the full width.
  • One known cutting device comprises an open C-beam assembled from a thick steel plate by welding, the beam forming the load bearing frame of the cutting device.
  • the beam In holes arranged in one of the flanges of the C-beam there are additionally fastened several compressed-air boxes functioning as actuators, with a blade fastened thereto. Both the frame and the blade essentially extend over the full web width.
  • the C-beam is replaced with a robust tubular beam.
  • the blade and the piston rod of the compressed-air box are located outside the frame.
  • the cutting device also include protective sheets, which collect impurities and are sensitive to damaging.
  • the piston rods of the compressed-air boxes are subjected to a high moment of deflection as the web to be cut pushes the blade during the cutting operation. This pushing is caused by the fact that the blade abrades the web gradually cutting it failing to cut it immediately. At the worst the piston rods bend and may even break, in which case the blade movement is prevented or the blade may even completely detach.
  • the known cutting devices are laborious to manufacture.
  • the weight of the frame for one length unit becomes high, the torsional stiffness remaining, however, insufficient. In these conditions the supporting of the cutting device is demanding, and the frame bends disadvantageously during the web cutting.
  • Document FI 108623 B discloses a cutting device, wherein the load bearing frame is essentially composed of three pieces manufactured out of extruded profiles of light metal. The three pieces are interconnected by means of bolts. Actuators for moving a blade are integrated into the three pieces of the load bearing frame, in which inter alia piston chambers for accommodating pistons of the actuators are formed.
  • a cutting device comprising the features summarized in the preamble of claim 1 is known from document US-A-4827820 .
  • the cutting device according to this document comprises a hollow load bearing frame, a blade and actuators constituted by the combination of loading hoses and springs of a spring means.
  • the blade and the actuators are located on an outer side of the frame, so that they can easily collect impurities and are sensitive to damaging.
  • the novel frame construction provides unequalled lightness and rigidity. In spite of this, the manufacture is simple and economical. In addition, being located inside the frame, the actuators and the blade are better protected than heretofore, and yet the total height of the cutting device can be kept lower than before. This is possible for example due to the positioning of the actuators, enabled by the novel frame construction. Furthermore, the solution according to the invention is light in weight, which allows its easy positioning in the forming machine. Also, a low weight for one length unit allows manufacturing cutting devices that are longer than heretofore, without producing bending and supporting problems. Furthermore, the blade can be well supported in the cutting device, which prevents the harmful conveyance of the moment of deflection to the actuators.
  • Figure 1 shows an embodiment of the cutting device according to the invention adapted in the vicinity of the web 10.
  • the cutting device is designed for cutting the web produced with a forming machine.
  • the most common forming machines are paper or board machines.
  • the cutting device cuts the web essentially in the cross direction of the web at the full web width.
  • web cutting is required in connection with coating and calendering.
  • the length of the cutting device naturally depends on the web width.
  • the cutting device according to the invention can be used in positions where web cutting is required.
  • the main components of the cutting device comprise a load bearing frame 11 arranged in the vicinity of the web 10 to be supported to the forming machine.
  • the frame construction is described below in greater detail.
  • the cutting device includes a blade 12 arranged movable in relation to the frame 11.
  • the blade length essentially corresponds with the width of the web to be cut.
  • the web is thus cut with the blade, for which the cutting device also comprises actuators 13 for moving the blade 12 and thus for providing the blade's operating movement.
  • the actuators 13 are connected to both the blade 12 and the frame 11.
  • the frame 11 is composed of a box-type structure made of sheet metal material, which makes the total cutting device light in weight, yet extremely rigid. Generally the sheet metal thickness varies from 0.5 to 5 mm, more advantageously from 1 to 3 mm. Part of the sheet metal components are removed from the cutting device shown in Figure 1 .
  • the box-type structure contains two cross-directional and curved sheet metal sections 14 for forming a hollow frame 11. Each sheet metal section 14 can be made of one piece or formed of several pieces connected to each other. In Figure 1 only a part of one of the two sheet metal sections 14 is seen. The curvature of the sheet metal sections reduces the likelihood of buckling.
  • the sheet metal sections 14 of the frame 11 are adapted against each other, and laminar intermediate supports 15 are arranged between them at an interval from each other.
  • the intermediate supports are additionally profiled to a curved shape, and in practice, it is these supports that determine the frame profile.
  • the sheet metal is easy to machine and profile, which facilitates producing more complicated shapes in the cutting device.
  • An example of this is the relief 17 made for the tail threading rope 16 that forms a structural component of the forming machine.
  • the sheet metal section and the intermediate supports are preferably laser-cut components. Laser cutting provides a good machining result and excellent dimensional and profile accuracy.
  • the sheet metal sections and the intermediate supports are additionally connected to each other by laser welding for forming the box-type structure. This structure is extremely rigid also against torsion. Furthermore, deformations caused by laser welding are non-existent, which allows maintaining the dimensional and profile accuracy achieved by laser welding.
  • each actuator has two end positions: the operating position producing the cutting, and the home position opposite thereto.
  • the actuators 13 are in their home position, in which case the blade 12 is essentially completely inside the frame 11. This allows positioning the cutting device safely also very close to the web.
  • the actuators 13 are in their operating position, in which case the blade 12 clearly extends outside the frame 11.
  • the web is illustrated with a dot-and-dash line.
  • the space required for inserting the actuators 13 and the blade 12 allows using a lower frame structure 11 than heretofore by attaching the actuators 13 to the intermediate supports 15 described above. That is, the actuators are placed in the center part of the frame instead of the bottom part.
  • the actuators 13 are fastened to the intermediate supports 15 either directly or by means of a bracket 18 according to the embodiment presented.
  • the actuators are easy to fasten to the bracket and can be installed to the intermediate supports only after that.
  • the intermediate supports preferably also comprise holes for inserting the protruding parts arranged in the brackets. This helps avoiding installation errors, and installing the actual mounting screws 19 is easy.
  • the brackets are preferably also made of sheet metal, in which case they are ready for installation after cutting and bending. In the embodiment presented, are of the actuators 13 is fastened to each intermediate support 15. If required, the number of the intermediate supports can be higher than that of actuators.
  • At least one of the sheet metal sections 14 comprises one or more plate components 20 defining a supporting surface.
  • the plate components 20 extend inside the frame 11 essentially in the direction of the blade 12 for supporting the blade 12 in the movement direction of the web 10.
  • the plate components 20 are preferably bent from the sheet metal section 14, and this is shown especially in the detail of Figure 1 , in which the blade 12 is partly cut across.
  • the plate components of the sheet metal plates form a slot-like channel for the blade. In this case, as the web presses the blade during cutting, the moment of deflection is subjected to the frame instead of the actuator. This helps avoiding deflection and other damage of the actuator piston rod.
  • the blade 12 can be supported to the frame 11 also in the operating position of the actuator 13.
  • the extension 21 is adapted in such a manner that it extends in the direction of the blade 12 from the fastening point 28 of the actuator 13 towards the frame 11. In this case at least the extension rests against the channel arranged in the frame for the blade.
  • stepped extensions 21 are preferably used, which allows maintaining the weight of the blade 12 appropriately low.
  • the above mentioned plate components 20 are connected to each other at their top edges by means of the intermediate supports 15. This allows keeping the channel always at a correct width without interfering with the blade movement.
  • Compressed air for the actuators 13, which are preferably compressed-air boxes, is supplied via a distribution channel 23.
  • the distribution channel 23 is additionally connected to a compressed-air line 24, extending between the two ends of the cutting device, by means of an intermediate pipe 25.
  • This ensures that compressed air is uniformly distributed to the actuators and it can be supplied from either end of the cutting device.
  • connections 26 arranged inside the frame 11 for providing a heating effect. By heating the frame sweating of the cutting device is prevented, which could lead to web breaks or at least to local marks in the web.
  • the distribution channel 23, compressed-air line 24, and the connections 26 are supported to recesses arranged in the intermediate supports 15. In this case separate fasteners are not needed. In practice, the connections are supplied with steam, or heating cables are passed through them.
  • the blade is preferably also a component made of sheet metal material by laser cutting.
  • the blade 12 has a laser cut indentation 27 at the web 10 side edge. Regardless of the thin sheet metal material, laser cutting allows keeping the blade straight and the indentation sharp. Therefore, after laser cutting the blade is ready to be installed in the cutting device without grinding or other type of machining.
  • holes 28 serving as the fastening points are also made in the blade 12 for fastening it to the actuators 13 ( Figure 2c ).
  • the cutting device is fastened to the forming machine simply at the ends.
  • the end portions of the frame 11 are provided with fastening detents, which here are formed of a profiled opening 29 and threaded holes 30.
  • a support arm 31, to be attached to the forming machine, is adapted to the fastening detents.
  • the frame is arranged longer than the width of the web. This is possible due to the light weight and rigidity of the cutting device as well as the above mentioned reliefs.
  • the intermediate supports are arranged at an interval of 800 mm, and the height of the cutting device is approximately 450 mm.
  • the weight of the cutting device is 35 kg/m.
  • the height of a similar cutting device manufactured according to the prior art technique is approximately 600 mm and the weight is 150 kg/m.
  • the cutting device according to the invention is notably smaller and lighter than heretofore.
  • the blade thickness is 2 mm and the width is 200 mm, for which the extensions make more than the half.
  • the blade is lighter than heretofore.
  • the sheet metal material used in the cutting device is either stainless steel or acid-resistant steel.
  • the frame 11 additionally includes an installation and service port 32, covered with a suitable cover 33.
  • the cutting device according to the invention is easy to adapt to a forming machine. Regardless of the use of the sheet metal material the cutting device is extremely rigid. In addition, the actuators and the blade are protected inside the frame. Due to the channel formed in the frame and the unique blade, the stress subjected to the actuators is slight. This increases the reliability of the cutting device and reduces the risk of damage.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Laser Beam Processing (AREA)
  • Confectionery (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
  • Glass Compositions (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Nonmetal Cutting Devices (AREA)

Claims (10)

  1. Schneidvorrichtung zum Schneiden einer Faserstoffbahn (10), die mit einer Umformmaschine hergestellt ist, im Wesentlichen in der Querrichtung der Faserstoffbahn über die volle Breite, wobei die Schneidvorrichtung Folgendes aufweist
    einen hohlen Lasttragrahmen (11), der in der Nähe der Faserstoffbahn (10) anzuordnen ist und an der Umformmaschine zu stützen ist, wobei der Rahmen durch einen schachtelartigen Aufbau gebildet ist, der aus einem flachen Material gemacht ist,
    eine Klinge (12), die beweglich in Beziehung zu dem Rahmen (11) angeordnet ist, wobei ihre Länge im Wesentlichen mit der zu schneidenden Faserstoffbahn (10) übereinstimmt, und
    Stellantriebe (13), die mit der Klinge (12) und dem Rahmen (11) zum Bewegen der Klinge (12) und somit zum Schneiden der Faserstoffbahn (10) mit der Klinge (12) verbunden sind, wobei die Stellantriebe (13) zwei Endpositionen haben, wobei die eine die Betriebsposition ist, die für das Schneiden sorgt, und die andere die zu dieser gegenüberliegende Ausgangsposition ist,
    dadurch gekennzeichnet, dass
    der schachtelartige Aufbau aus einem Blechmaterial gemacht ist,
    die Stellantriebe (13) sich im Inneren des Rahmens (11) befinden, und
    die Klinge (12) sich im Wesentlichen vollständig in dem Rahmen (11) befindet, wenn die Stellantriebe (13) in ihrer Ausgangsposition sind.
  2. Schneidvorrichtung gemäß Anspruch 1,
    dadurch gekennzeichnet, dass
    die Klinge (12) ein Bauteil, das aus Blechmaterial durch Laserschneiden gemacht ist, mit einer Laserschneidkerbung (27) an der Faserstoffseitenkante ist.
  3. Schneidvorrichtung gemäß Anspruch 1 oder 2,
    dadurch gekennzeichnet, dass
    der schachtelartige Aufbau zwei gebogene Blechabschnitte (14) in Querschnittsrichtung, die aneinander angepasst sind, und flächige Zwischenstützen (15) hat, die in einem Abstand voneinander zwischen den Blechabschnitten (14) angeordnet sind.
  4. Schneidvorrichtung gemäß Anspruch 3,
    dadurch gekennzeichnet, dass
    jeder Blechabschnitt (14) und jede Zwischenstütze (15) Laserschneidbauteile sind, die in der Schneidvorrichtung aneinander mit Hilfe von Laserschweißen befestigt sind.
  5. Schneidvorrichtung gemäß Anspruch 3 oder 4,
    dadurch gekennzeichnet, dass
    die Stellantriebe (13) an den Zwischenstützen (15) entweder direkt oder mit Hilfe einer Halterung (18) befestigt sind.
  6. Schneidvorrichtung gemäß einem der Ansprüche 3 bis 5,
    dadurch gekennzeichnet, dass
    mindestens einer der Blechabschnitte (14) mindestens ein Plattenbauteil (20) aufweist, das sich im Inneren des Rahmens (11) in der Längsrichtung der Klinge (12) zum Definieren einer Stützfläche zum Stützen der Klinge (12) erstreckt.
  7. Schneidvorrichtung gemäß Anspruch 6,
    dadurch gekennzeichnet, dass
    die zwei Blechabschnitte (14) jeweils mindestens ein Plattenbauteil (20) aufweisen, das sich im Inneren des Rahmens (11) in der Längsrichtung der Klinge (12) zum Definieren einer Stützfläche zum Stützen der Klinge (12) erstreckt, wobei die Plattenbauteile (20) des einen und des anderen Blechabschnitts (14) gegeneinander platziert sind, um so einen schlitzartigen Kanal für die Klinge (12) zu bilden.
  8. Schneidvorrichtung gemäß Anspruch 7,
    dadurch gekennzeichnet, dass
    an der Seite gegenüber der Faserstoffbahnseitenkante die Klinge (12) mindestens ein Ansatzstück (21) aufweist, das daran angepasst ist, an dem Kanal zu ruhen, der an dem Rahmen (11) für die Klinge (12) ausgebildet ist.
  9. Schneidvorrichtung gemäß einem der Ansprüche 3 bis 8,
    dadurch gekennzeichnet, dass
    in dem Rahmen (11) Verbindungen (26) zum Vorsehen eines Heizeffekts angeordnet sind, wobei die Verbindungen (26) durch Vertiefungen geschützt sind, die in den Zwischenstützen (15) ausgebildet sind.
  10. Schneidvorrichtung gemäß einem der Ansprüche 1 bis 9,
    dadurch gekennzeichnet, dass
    die Länge des Rahmens (11) länger als die Breite der Faserstoffbahn (10) angeordnet ist, und es an den Endabschnitten des Rahmens (11) Befestigungsrasten (29, 30) zum Stützen der Schneidvorrichtung an ihren Enden sowie mindestens eine Aussparung (17) für ein Strukturbauteil (16) der Umformmaschine gibt.
EP03778374A 2002-12-18 2003-12-12 Schneidvorrichtung Expired - Lifetime EP1578683B1 (de)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI20025063 2002-12-18
FI20025063A FI117281B (fi) 2002-12-18 2002-12-18 Katkaisulaite
PCT/FI2003/000950 WO2004054912A1 (en) 2002-12-18 2003-12-12 Cutting device

Publications (2)

Publication Number Publication Date
EP1578683A1 EP1578683A1 (de) 2005-09-28
EP1578683B1 true EP1578683B1 (de) 2008-09-03

Family

ID=8565231

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03778374A Expired - Lifetime EP1578683B1 (de) 2002-12-18 2003-12-12 Schneidvorrichtung

Country Status (7)

Country Link
EP (1) EP1578683B1 (de)
CN (1) CN100430306C (de)
AT (1) ATE407083T1 (de)
AU (1) AU2003285386A1 (de)
DE (1) DE60323395D1 (de)
FI (1) FI117281B (de)
WO (1) WO2004054912A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101890734B (zh) * 2010-07-09 2012-07-25 林秀椿 一种切带机
JP7100397B1 (ja) 2021-07-01 2022-07-13 株式会社不二鉄工所 切断機構および切断方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1449404A (fr) * 1965-10-07 1966-08-12 Procédé et dispositif pour la coupe transversale d'une bande continue de papier, pellicules, films et autres matières flexibles
FI860797A7 (fi) * 1986-02-24 1987-08-25 Valmet Paper Machinery Inc Paperirainan katkaisulaite.
IT1246940B (it) * 1990-04-12 1994-11-29 Antonio Guerrasio Profilo-guida portante snodabile per strutture portanti di pareti, soffitti e velette curve o rotonde in carton gesso o altro materiale
DE4244787C2 (de) * 1992-12-18 2000-01-27 Koenig & Bauer Ag Einrichtung zum Verschieben von Schneidmesserleisten auf einem Schneidzylinder einer Rotationsdruckmaschine
DE29508732U1 (de) * 1995-05-26 1995-09-21 Voith Sulzer Papiermaschinen GmbH, 89522 Heidenheim Vorrichtung zum Perforieren einer laufenden Papierbahn
DE19615370A1 (de) * 1996-04-19 1997-10-23 Voith Sulzer Papiermasch Gmbh Verfahren und Vorrichtung zum Durchtrennen einer laufenden Warenbahn
FI108623B (fi) * 1997-06-02 2002-02-28 Metso Paper Inc Rainan katkaisulaite

Also Published As

Publication number Publication date
FI117281B (fi) 2006-08-31
DE60323395D1 (de) 2008-10-16
FI20025063A7 (fi) 2004-06-19
CN1714036A (zh) 2005-12-28
ATE407083T1 (de) 2008-09-15
WO2004054912A1 (en) 2004-07-01
FI20025063A0 (fi) 2002-12-18
AU2003285386A1 (en) 2004-07-09
EP1578683A1 (de) 2005-09-28
CN100430306C (zh) 2008-11-05

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