EP0802139A2 - Méthode et dispositif pour couper une bande en déplacement - Google Patents

Méthode et dispositif pour couper une bande en déplacement Download PDF

Info

Publication number
EP0802139A2
EP0802139A2 EP97105848A EP97105848A EP0802139A2 EP 0802139 A2 EP0802139 A2 EP 0802139A2 EP 97105848 A EP97105848 A EP 97105848A EP 97105848 A EP97105848 A EP 97105848A EP 0802139 A2 EP0802139 A2 EP 0802139A2
Authority
EP
European Patent Office
Prior art keywords
knife
energy
knock
compressed air
web
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Withdrawn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
EP97105848A
Other languages
German (de)
English (en)
Other versions
EP0802139A3 (fr
Inventor
Zygmunt Madrzak
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.)
Voith Patent GmbH
Original Assignee
Voith Sulzer Papiermaschinen GmbH
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 Voith Sulzer Papiermaschinen GmbH filed Critical Voith Sulzer Papiermaschinen GmbH
Publication of EP0802139A2 publication Critical patent/EP0802139A2/fr
Publication of EP0802139A3 publication Critical patent/EP0802139A3/fr
Withdrawn legal-status Critical Current

Links

Images

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
    • 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
    • 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
    • B26D1/12—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 cutting member moving about an axis
    • B26D1/25—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 cutting member moving about an axis with a non-circular cutting member
    • B26D1/34—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 cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/345—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 cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut for thin material, e.g. for sheets, strips or the like
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/20—Cutting-off the expiring web

Definitions

  • the invention relates to a device for severing a running web, in particular a paper web with an actuating device for actuating the knock-off knife, and a method for severing a running web, in particular a paper web, with the aid of such a knife.
  • the object of the invention is therefore to provide a device with which a rapid severing of the running paper web is possible even at high web speeds, with the aim of achieving a cutting line that is as straight as possible.
  • the object of the invention is achieved by a device according to the characterizing part according to claim 1 and a method for cutting through a running material web with the aid of a knock-off knife according to claim 14.
  • the energy required to accelerate the cutting knife to a high speed is not successively applied by moving the cutting knife with the aid of a driving actuating element, for example a pressure cylinder, as in DE 38 15 277, but at least before the knife is moved partially introduced into an energy store and temporarily stored there. If the knife is to be moved in order to cut a running web, the stored energy is released at least partially suddenly and transmitted to the tee knife, for example by means of a pulse. As a result, kinetic energy, which corresponds to the amount of the stored energy, is supplied to the knife, which is used for acceleration.
  • a driving actuating element for example a pressure cylinder
  • the compressed air chamber can be used as the energy storage device.
  • the energy stored in the compressed air chamber by supplying compressed air from the outside can be transmitted to the tee knife, for example, in two ways.
  • One possibility is the sudden escape of the air stored in the compressed air chamber in the direction of the knock-off knife, whereby a pulse transfer from the air flow to the knock-off knife is made possible.
  • the knock-off knife is in contact with the compressed air chamber, which can be designed, for example, as a compressed air hose. By discharging the compressed air stored in the pressure chamber, it relaxes and the knife is accelerated in the direction of the relaxing medium.
  • the Energy storage device is an acceleration device for a mass, for example a mechanical pulse generator for the tee meter.
  • the energy storage device can be a combination of the individual energy storage elements listed above by way of example, for example a combination of a compressed air chamber and a spring. It is particularly advantageous if the energy storage devices are distributed over the entire machine width. For example, it can be provided that compressed air nozzles, from which a compressed air jet escapes to transmit impulses to the knife, are arranged along the entire machine width.
  • the knock-off knife is made of a material with a particularly low mass.
  • the actuating device for the cutting knife is arranged such that the speed at the tip of the knife is greater than the speed at the articulation point.
  • a method for severing a running web of material is specified, the method being particularly characterized in that after the energy storage device of the energy storage device has absorbed at least part of the possible maximum energy, this is applied, for example, by pulse transmission after actuation of the knock-off knife delivers the knives.
  • the energy is stored in the form of compressed air in a compressed air chamber.
  • the stored energy can be supplied to the knock-off knife, for example by pulse transmission of a moving mass of a pulse generator, or with the aid of compressed air, it being possible in a further embodiment that the compressed air is supplied continuously.
  • the stored energy is only made available in addition to the kinetic energy supplied for actuation.
  • the kinetic energy of the knife is composed of a proportion of energy supplied via the actuating device and a proportion of stored energy. But it is also possible that the kinetic energy of the knife results 100% from the conversion of stored energy.
  • the tee knife 1 is arranged below a paper web 4 running over two rollers 2, 3.
  • the knock-off knife 1 is fastened to a bearing 5 so that it can pivot about the axis of rotation.
  • On the side of the bearing opposite the knife there is a holder 6 for articulating the knife by means of a pneumatic / hydraulic cylinder 7 via the rod 8 connected to the piston of the hydraulic cylinder 7.
  • a pneumatic / hydraulic cylinder there are also electrical actuating devices , Piezoelectric, magnetostrictive, magnetically or inductively working elements conceivable. 5 is in the rest position.
  • the valve 13 is opened, compressed air from the pressure chamber 10 flows via the line 11 into the pneumatic cylinder and presses the piston 12 down, as a result of which the knock-off knife 1 is in Moved towards the paper web 4 and cut this after covering a certain distance. Due to the rigid coupling of the tee knife and pneumatic cylinder, the speed of the tee knife movement is determined by the speed of the air introduction into the pneumatic cylinder. That means that the hitting knife is a Acceleration experiences exactly that energy (minus friction) that is introduced into the pneumatic cylinder via line 11.
  • Fig. 1 shows a first embodiment of the invention.
  • the knock-off knife 1 with cutting blade 14 is arranged below a web in the vicinity of the roller 2, which can be an adhesive roller, for example.
  • the cross section of the tee knife is relatively thin and therefore has a very small mass to be moved. It is rigidly attached to a bracket 20, which is not shown in detail.
  • a pressure chamber 21 which is part of a compressed air device and can be designed as an expandable, tubular body and is connected to a compressed air system (not shown here). If the pressure chamber, which is designed as a hose, is now filled with compressed air, the tubular body expands in cross section and thereby presses the knock-off knife into the rest position shown. The stretching of the tubular body introduces potential energy into the system.
  • the arrangement does not have the necessary counterforce to the restoring force of the curved knock-off knife, and this cuts the rest of the dotted position by cutting the paper web.
  • a large part of the potential energy stored in the tubular body designed as an energy store is converted into kinetic energy of the tee knife.
  • the knife can again be brought into the rest position shown after cutting the web.
  • the tee knife shown in Fig. 1 has the advantage over the tee knives according to the prior art that by quickly and suddenly venting the pressure chamber, the stored energy is converted into kinetic energy in a very short time, hence the tee knife in a very short time to the cut necessary high speeds are accelerated.
  • the actuating device of the cutting knife comprises only one energy storage device.
  • a pressure chamber 21 is arranged between the holder 20 and the cutting knife 1, which in the present case is designed as an expandable, tubular body.
  • the knock-off knife is pretensioned and the tubular body is compressed in the process.
  • the prestressed knock-off knife is held by a locking device 23. If the knife is triggered, the locking device is pivoted into the position shown in dashed lines, the prestressed knife relaxes and is accelerated in the direction of the web 4.
  • the acceleration movement of the knife 1 is supported in that the compressed compressed air hose relaxes, so that the energy stored in this compressed system is also converted into kinetic energy of the knife.
  • FIG. 2 shows a further embodiment of the knock-off knife according to the invention, in which a spring element 30 is used as the energy storage device.
  • the chopping knife 1 with the cutting blade 14 is arranged below the paper web 4 in the rest position.
  • the spring element which is fastened with its one side on a bearing block 31, for example by means of screws 32, and its other end rests on the knock-off knife.
  • the force exerted by the prestressed spring must be compensated for.
  • the hitting knife thus has potential energy.
  • the compensation of the restoring force of the spring is applied by a pneumatic cylinder 32 with a piston 34 to which a rod 36 is attached.
  • the actuating device comprises only one energy storage device.
  • FIG. 3 shows a further embodiment of the invention, in which a spring element 30 in combination with a compressible, tubular pressure chamber is used as the energy storage device as the energy store.
  • the counterforce to the repelling force of the energy storage elements 21, 30 is applied by a filled pneumatic cylinder 33 with a piston 34.
  • an air line 40 with a built-in valve 50 is provided, via which compressed air enters the pneumatic cylinder, so that the piston is moved into the desired position to compensate for the restoring forces.
  • the other part of the pneumatic cylinder 33 can be supplied with compressed air via a further compressed air line 52 which is connected to a compressed air reservoir 54.
  • a valve 56 is connected in line 52.
  • valve 56 In the rest position, the valve 56 is in the closed position, ie no compressed air can flow into the upper part of the pneumatic cylinder, and the valve 50 in the open position.
  • the actuation or triggering of the knock-off knife 1 now takes place in that the valves, for example mechanically coupled to one another via a rod 58, are brought into a second position, so that air flows out of the lower region of the pneumatic cylinder, as a result of which the energizing elements of the energy storage elements push back 21, 30 the piston 34 moves down and that Tee knife is accelerated in the direction of the paper web.
  • the kinetic energy of the knock-off knife can additionally be increased in that, as in the present example, compressed air flows from the pneumatic accumulator of the chamber 54 into the upper part of the cylinder via line 52 as in the prior art according to FIG. 5.
  • the actuating device comprises both an energy storage device and a driven actuating element.
  • FIG. 4 shows a fourth embodiment of the invention, in which a pulse generator 60 is used as the energy storage device.
  • the pulse generator 60 In the rest position shown in Fig. 4 is the pulse generator 60, which can also be a pneumatic component that is supplied in a non-illustrated manner with compressed air in its rest position, which is characterized in that the pulse generator does not come into contact with the tee meter.
  • the pulse generator is triggered shortly before the valve 64 is opened and the pneumatic cylinder, with the aid of which the tee knife is articulated, moves.
  • the mass 62 is accelerated with the aid of the energy stored in the pulse generator on the route from the rest position to the point at which it comes into contact with the knock-off knife.
  • the kinetic energy obtained on this distance is transferred to the tee knife by means of a pulse.
  • the kinetic energy is then composed of the energy supplied via the driven actuating element, in the present case the pneumatic cylinder, and the kinetic energy of the accelerated mass, which was transmitted to the knock-off knife by the energy storage device by means of a pulse.
  • FIGS. 6 and 7 are distinguished in particular by the fact that the bearing about which the knock-off knife with cutting blade 14 rotates centrally between the energy storage element 21 and 30 and the actuating element 70, which can be a pneumatic or else a hydraulic element.
  • the actuating element is a hydraulic cylinder with a support element 71. If the knock-off knife is actuated, the support element is brought out of contact with the knock-off knife, for example by emptying the hydraulic cylinder. As a result, the compensation of the restoring force exerted by the spring 30 is no longer applied, and the potential energy stored in the spring is converted into kinetic energy of the knock-off knife for severing the web 4.
  • the actuating element comprises a pneumatic cylinder 70 which articulates the knock-off knife. If the pneumatic cylinder is actuated and the tee knife is triggered, the potential energy stored by compression of the pressure chamber 21 can be converted into kinetic energy of the tee knife, and the paper web 4 is severed.
  • FIGS. 8 and 9 show further exemplary embodiments of the invention in which the actuation of the knock-off knife is carried out by means of a compressed air jet.
  • the tee knife 1 is rotatably supported in a bearing in a solid bearing block 20.
  • the bearing block 20 has a V-shaped cutout 83.
  • a plurality of openings 90 are arranged one behind the other in the underside 84 of the V-shaped cutout 83 of the bearing block 20.
  • the openings 90 are connected via channels 91 to a compressed air storage chamber 21 which is embedded in the bearing block 20 and in which a compressed air hose 92 lies. In the rest position, the knock-off knife is in contact with the underside 84 of the V-shaped cutout 83.
  • the rotational movement of the knife 1 is limited by the top of the V-shaped cutout 84.
  • valves can also trigger the outflow from the compressed air storage chamber 21.
  • the valves are then expediently integrated into the channels 91 in each case.
  • an energy storage device or an energy storage system with a pulse acceleration device in the form of a spring 30.
  • Other energy stores such as filled elastic compressed air hoses etc. would also be conceivable.
  • the spring is in the compressed state when the cutting knife 1, as shown, assumes the rest position. So that the knife is not activated unintentionally by the energy stored in the spring, the knock-off knife is fixed in the position shown by a hold-down device 95.
  • a flow pulse is applied to the knock-off knife in a time-coordinated manner and the hold-down device 95 is pivoted into the position shown in broken lines, as a result of which the energy stored in the spring is suddenly released and the knock-off knife is accelerated in addition to the pulse transmission.
  • 90 nozzle heads 97 are attached according to FIG. 9 above the openings.
  • the compressed air nozzles 97 thus formed can be arranged so as to distribute the stored compressed air from the pressure chamber over the width of the machine, so that a relatively homogeneous pressurization of the knife when actuated is ensured.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Replacement Of Web Rolls (AREA)
  • Laser Beam Processing (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
EP97105848A 1996-04-19 1997-04-09 Méthode et dispositif pour couper une bande en déplacement Withdrawn EP0802139A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19615526 1996-04-19
DE1996115526 DE19615526A1 (de) 1996-04-19 1996-04-19 Abschlagmesser zum Durchtrennen einer laufenden Warenbahn

Publications (2)

Publication Number Publication Date
EP0802139A2 true EP0802139A2 (fr) 1997-10-22
EP0802139A3 EP0802139A3 (fr) 1998-05-27

Family

ID=7791770

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97105848A Withdrawn EP0802139A3 (fr) 1996-04-19 1997-04-09 Méthode et dispositif pour couper une bande en déplacement

Country Status (2)

Country Link
EP (1) EP0802139A3 (fr)
DE (1) DE19615526A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1035052A3 (fr) * 1999-03-10 2002-02-06 Voith Paper Patent GmbH Dispositif d'entrainement linéaire
DE10321778A1 (de) * 2003-05-14 2005-01-05 Windmöller & Hölscher Kg Schneid- und Transportwalze in einer Wickelvorrichtung zum Aufwickeln von Materialbahnen
EP1356905A3 (fr) * 2002-04-26 2005-01-12 Voith Paper Patent GmbH Dispositif de frappe
WO2015036174A1 (fr) * 2013-09-12 2015-03-19 Khs Gmbh Dispositif de coupe et dispositif d'épissure

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1485985A (en) * 1974-04-01 1977-09-14 Ici Ltd Web winding apparatus
DD157403A3 (de) * 1980-12-15 1982-11-10 Hermann Doebler Trennvorrichtung zum quertrennen der papierbahn
FI860797A7 (fi) * 1986-02-24 1987-08-25 Valmet Paper Machinery Inc Paperirainan katkaisulaite.
US4907014A (en) * 1989-05-18 1990-03-06 Calcomp Inc. Safely retracting paper-cutting apparatus for a roll paper printer
DE4107127A1 (de) * 1991-03-06 1992-09-10 Basf Magnetics Gmbh Trenn- und anlegevorrichtung fuer materialbahnen an wickelmaschinen
DE4310900A1 (de) * 1993-04-02 1994-10-06 Basf Magnetics Gmbh Trenn- und Anlegevorrichtung für Materialbahnen an Wickelmaschinen
DE9413363U1 (de) * 1994-08-22 1994-11-03 J.M. Voith Gmbh, 89522 Heidenheim Vorrichtung zum Quertrennen einer laufenden Warenbahn

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1035052A3 (fr) * 1999-03-10 2002-02-06 Voith Paper Patent GmbH Dispositif d'entrainement linéaire
US6508429B1 (en) 1999-03-10 2003-01-21 Voith Sulzer Papiertechnik Patent Gmbh Linear drive assembly and process of using same
EP1356905A3 (fr) * 2002-04-26 2005-01-12 Voith Paper Patent GmbH Dispositif de frappe
DE10321778A1 (de) * 2003-05-14 2005-01-05 Windmöller & Hölscher Kg Schneid- und Transportwalze in einer Wickelvorrichtung zum Aufwickeln von Materialbahnen
DE10321778B4 (de) * 2003-05-14 2006-03-30 Windmöller & Hölscher Kg Schneid- und Transportwalze in einer Wickelvorrichtung zum Aufwickeln von Materialbahnen
US7967176B2 (en) 2003-05-14 2011-06-28 Windmoeller & Hoelscher Kg Cutting and transport cylinder in a winding device for winding material webs
WO2015036174A1 (fr) * 2013-09-12 2015-03-19 Khs Gmbh Dispositif de coupe et dispositif d'épissure
US10093502B2 (en) 2013-09-12 2018-10-09 Khs Gmbh Cutting apparatus and splicing apparatus

Also Published As

Publication number Publication date
EP0802139A3 (fr) 1998-05-27
DE19615526A1 (de) 1997-11-27

Similar Documents

Publication Publication Date Title
DE19748789C2 (de) Vorrichtung zum Querschneiden einer Papierbahn
DE69430064T2 (de) Verfahren und Vorrichtung zum Vorbereiten des Öffnens eines Bahnwickels
DE2925936C2 (de) Vorrichtung zum Abschneiden vertikaler Papierbahnen
DE1176964B (de) Revolverstanze
DE102013111100B4 (de) Ablegekopf zum Ablegen von Fasermaterial
DE69405167T2 (de) Trommelwickler
DD202258A5 (de) Vorrichtung zum einstanzen eines loches in eine papierbahn
EP0802139A2 (fr) Méthode et dispositif pour couper une bande en déplacement
EP0802138B1 (fr) Dispositif pour couper une bande en déplacement
EP0986477B1 (fr) Dispositif d'avance et de transfert d'une barre et procede d'avance et de transfert d'une barre d'enfilage
EP1843960A1 (fr) Procede et dispositif permettant de deplacer un cylindre de pression entraine en rotation contre un cylindre de guidage de materiau
EP0831050B1 (fr) Procédé et dispositif pour positionner des tubes vides sur un transporteur de tubes
DE3034674C2 (de) Wickelrollenträger
WO2000062964A1 (fr) Cisaille volante
EP1063087B1 (fr) Dispositif et procédé pour couper des bandes de matériau
DE102013226689B4 (de) Vorrichtung zum unterbrechungsfreien Zuführen einander nachfolgender Materialbahnen zu einer Druckmaschine
DE2135714A1 (de) Verfahren zur Steuerung der Klemmeinrichtung eines rotierenden Kopierzylinders und Kopierzylinder zur Durchführung des Verfahrens
DE60319461T2 (de) Werkzeugkupplungsvorrichtung, insbesondere für Pressen
DE102013226694B4 (de) Vorrichtung zum unterbrechungsfreien Zuführen einander nachfolgender Materialbahnen zu einer Druckmaschine
DE19533594C1 (de) Ansetzvorrichtung
DE10024354B4 (de) Andruckvorrichtung für eine Klebewalze
WO2002101132A1 (fr) Procede et dispositif permettant de tendre un fil de chaine
DE191152C (fr)
DE2164267B2 (de) Vorrichtung zur automatischen Herstellung einer Stahlbandumreifung
WO1998031941A1 (fr) Dispositif de commande d'un cylindre

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): DE FI FR IT SE

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): DE FI FR IT SE

17P Request for examination filed

Effective date: 19981127

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VOITH SULZER PAPIERTECHNIK PATENT GMBH

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: VOITH PAPER PATENT GMBH

17Q First examination report despatched

Effective date: 20001204

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 20010328