EP0802138A2 - Dispositif pour couper une bande en déplacement - Google Patents

Dispositif pour couper une bande en déplacement Download PDF

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Publication number
EP0802138A2
EP0802138A2 EP97105845A EP97105845A EP0802138A2 EP 0802138 A2 EP0802138 A2 EP 0802138A2 EP 97105845 A EP97105845 A EP 97105845A EP 97105845 A EP97105845 A EP 97105845A EP 0802138 A2 EP0802138 A2 EP 0802138A2
Authority
EP
European Patent Office
Prior art keywords
knife
web
knock
pulse
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
EP97105845A
Other languages
German (de)
English (en)
Other versions
EP0802138B1 (fr
EP0802138A3 (fr
Inventor
Bernd Kaufmann
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 EP0802138A2 publication Critical patent/EP0802138A2/fr
Publication of EP0802138A3 publication Critical patent/EP0802138A3/fr
Application granted granted Critical
Publication of EP0802138B1 publication Critical patent/EP0802138B1/fr
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
    • B26D1/12—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
    • 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
    • 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
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S83/00—Cutting
    • Y10S83/929—Particular nature of work or product
    • Y10S83/949—Continuous or wound supply
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6582—Tool between tandem arranged work carrying means
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/647—With means to convey work relative to tool station
    • Y10T83/6584—Cut made parallel to direction of and during work movement
    • Y10T83/6635—By feed roller
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8798—With simple oscillating motion only
    • Y10T83/8804—Tool driver movable relative to tool support
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/889—Tool with either work holder or means to hold work supply
    • Y10T83/896—Rotatable wound package supply

Definitions

  • the invention relates to a device for severing a web, in particular made of paper or cardboard.
  • Such methods and devices are e.g. B. applied in paper machines, furthermore in machines which are connected downstream of the paper machine, for example in rewinders, coating machines or roll cutting machines.
  • Known devices for example according to DE 38 15 277, have a machine-wide knife that extends transversely to the direction of paper travel.
  • the knife edge of the knives according to the above-mentioned document has a large distance from the point of impact of the knife edge to the adhesive point of the adhesive roller. This has the consequence that after cutting the web and gluing with a new, too long paper residue or paper tail remains behind the gluing point, which leads to tears, for example, in a downstream coating machine, especially with thin types of paper.
  • the device according to DE 38 15 227 has the disadvantage that a knife blade with teeth is used, which means that the web undesirably has a cutting edge with serrations.
  • DE-U-94 13 363 shows a device for severing a running web with a severely inclined cutting knife against the web direction, which avoids the latter of the above disadvantage.
  • the angle that results between the cutting knife and the web during the cutting process is less than 45 degrees in the case of the article according to DE-U-94 13 363.
  • a cutting edge that is largely rectilinear over the material web can be achieved with this at low web speeds.
  • the measures according to DE-U-94 13 363 are no longer sufficient to achieve the desired operational reliability.
  • the severing speed of the cutting knife is usually not sufficient to achieve a jag-free tee.
  • the object of the invention is therefore to overcome the disadvantages of the devices according to the prior art which occur at high web speeds. This object is achieved according to the invention by a device according to the characterizing part of claim 1.
  • the knife edge of the knock-off knife arranged below the web is in the gusset between the paper web and a pressure roller at a short distance from a gap formed by the pressure roller and a roller.
  • an actuating device is assigned to the knock-off knife, which comprises at least one pulse exchange device.
  • the pulse exchange can take place mechanically or pneumatically.
  • a pulse or pulse exchange of two masses is generated by means of the pulse exchange device.
  • V 2nd 2m 1 ⁇ V 1 m 1 + m 2nd
  • V 2 is the speed of the tee knife with mass m 2 after impact
  • V 1 is the speed of impact mass m 1 . If m 2 is very much smaller than m 1 , it can be achieved in the best case that the speed of the knock-off knife is twice as high as the speed of the striking mass.
  • a pneumatic pulse generator can also be provided as the pulse generator.
  • a directional flow - for example compressed air - is used, which is directed to the tee meter and accelerates the tee knife by exchanging the flow impulse.
  • the acceleration of the knock-off knife can be supported if the actuating device has an energy storage device, for example a spring or a compressed air storage device, in addition to the pulse generators described.
  • the energy storage device for example a spring or a compressed air storage device, in addition to the pulse generators described.
  • the knock-off knife is inclined against the direction of web travel.
  • the angle that results between the cutting knife and the web during the cutting process is less than 45 degrees. Due to the inclined position of the cutting knife, the cutting times are reduced even further compared to the solutions shown above, so that the cutting of the material web is carried out very quickly. For example, dodging the web and thus the tendency to wrinkle is almost impossible.
  • the factors influencing the cutting edge such as the angle that results between the cutting knife and the web during the cutting process, the speed of the web and the feed speed of the cutting knife are optimally coordinated with respect to a jag-free tee .
  • the invention is characterized in particular by the fact that the cutting knife is accelerated by pulse exchange in such a way that the running material web is severed at a high cutting knife speed.
  • the new paper roll is designated with the reference number 1, the old paper roll with the reference number 2, and with 3 the running paper web which is coming to an end. If the end of the web 3 is to be glued to the beginning of the web of the new roll 1, the gluing device is moved in the direction of the roll 1. Between the pressure roller 4 and the new paper roll 1 there is a gap or a connection point 5 where the end of the old web is glued to the beginning of the new web.
  • the separating device 10 is arranged, which in the present case is provided with a pulse exchange device 11.
  • the knock-off knife 12 has a cutting blade 13 which is inclined counter to the web running direction. The arrangement of the separating device 10 in the gusset between the roll 1 and the pressure roller 4 at a short distance from the adhesive gap 5 ensures that the rest of the old paper web that runs into the adhesive gap after the paper web 3 has been severed is only short.
  • the web is not raised when it is severed, so that the web stabilizing devices required in prior art designs, such as suction boxes, which were arranged in front of the gluing point, are avoided in the present invention .
  • FIG. 2 The device according to the invention according to FIG. 1 is shown in more detail in FIG. 2.
  • the separating device 10 is arranged in the gusset below the paper web 3 in the vicinity of the pressure roller 4.
  • the knock-off knife 12 with the cutting blade 13 inclined against the web running direction is clamped in a clamp holder 14.
  • the part of the knock-off knife 12 which is not clamped can be moved in the vertical direction by the action of bending forces.
  • the bracket 14 is fixedly attached to a support arm 15 of the separating device 10. Below the clamp bracket 14, a mechanical pulse generator 17 is pivotally mounted on the support arm 15 in a bearing 16.
  • the mechanical pulse generator 17 which is pivotally or rotatably mounted in the bearing 16, is held between the underside of the holder 14 and a support 18 elastically by means of two deformable elements, for example elastic compressed air hoses, by means of a clamping effect. If the lower compressed air hose 19 is now filled and the upper compressed air hose 20 is emptied, the mechanical pulse generator 17 is pivoted about the axis of the bearing 16 and comes to a stop with the lower edge of the knock-off knife 12. Here, a pulse exchange takes place from the mechanical pulse generator to the knock-off knife. The clamped knife 12 is accelerated in the direction of the paper web and cuts it.
  • the knife 12 Since the knife 12 is clamped in the holder 14, it is brought back into the starting position shown as a result of the tensioning of the knife as a result of the restoring force.
  • a stop 52 prevents the knife from overshooting in the direction of the mechanical pulse generator 17.
  • FIGS. 4 and 5 Further embodiments of a mechanical pulse generator (see FIG. 3) and a pneumatic pulse generator are shown schematically in FIGS. 4 and 5.
  • the tee knife 12 is rotatably supported in a solid bearing block 21 as shown in FIG. 3.
  • the bearing block 21 has a circular bore 22 which receives the bearing 16 of the knock-off knife 12.
  • the bearing bore 22 is followed by a V-shaped recess 23 embedded in the bearing block. In the rest position, the knife 12 rests on the lower edge 24 of the V-shaped recess 23.
  • a mechanical pulse generator 26 is attached to the bearing block 21 by means of a holder 25.
  • the mechanical pulse generator 26 comprises a cylinder part 27, which can be operated with the aid of compressed air or else hydraulically, and a plunger 28 of mass m 1 , which is placed on a piston rod 29 of the piston let into the cylinder part. If the tee knife is to be actuated, the cylinder 27 is released from its rest position shown, the mass m 1 of the ram accelerates to the speed V 1 with which it hits the stationary, rotatably mounted tee knife at point 30.
  • the momentum of the mass m 1 is practically completely transferred to the movable mass of the knock-off knife m 2 , which is accelerated to a speed V 2 , moves about the bearing axis into the position shown in broken lines and thereby cuts the paper web 3.
  • the rotational movement of the knock-off knife 12 is limited by the upper side 31 of the V-shaped cutout 23. If the paper web is severed, the knock-off knife reaches the starting position by restoring forces, for example gravity, in which the knock-off knife is in contact with the underside 24 of the V-shaped cutout 23, and the plunger 28 is inserted into the starting or Move to rest position.
  • Fig. 4 shows a further embodiment of a tee knife according to the invention, with a pneumatic pulse generator.
  • the knock-off knife 12 is rotatably mounted in a bearing 22 in a solid bearing block 21.
  • the bearing block 21 has a V-shaped cutout 23.
  • In the underside 24 of the V-shaped cutout 23 of the bearing block 21 are arranged one behind the other in several openings 40 of a nozzle body.
  • the openings 40 are connected via channels 41 to a pressure storage chamber 43 which is embedded in the bearing block 21 and in which a compressed air hose 42 lies.
  • the knock-off knife In the rest position, the knock-off knife is in contact with the underside of the V-shaped cutout 24. If the knife is to be actuated, when the compressed air hose 42 is vented, compressed air flows out of the compressed air storage chamber 43 through the duct 41 to the opening 40. By means of the flow the pulse carried along is actuated and accelerated to a speed V 2 , whereby the paper web 3 is severed.
  • the rotational movement of the knife 12 is limited by the upper side 31 of the V-shaped cutout 23 as in FIG. 3.
  • valves can also trigger the outflow from the compressed air storage chamber 43.
  • the valves are expediently integrated into the channels 41.
  • an energy storage device or an energy storage system with a pulse exchange device for example according to FIG. Fig. 3 or Fig. 4 to combine.
  • a pulse exchange device for example according to FIG. Fig. 3 or Fig. 4 to combine.
  • a spring 50 use.
  • Other energy stores such as filled elastic compressed air hoses etc. would also be conceivable.
  • the spring is in the compressed state when the tee knife is in the rest position as shown. 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 51. If the knife is triggered, a flow pulse is applied to the knock-off knife in a time-coordinated manner and the hold-down device 51 is pivoted into the position shown in dashed lines, as a result of which the energy stored in the spring is suddenly released and the knock-off knife is additionally accelerated to exchange impulses.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Replacement Of Web Rolls (AREA)
  • Paper (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
  • Preliminary Treatment Of Fibers (AREA)
  • Absorbent Articles And Supports Therefor (AREA)
EP97105845A 1996-04-19 1997-04-09 Dispositif pour couper une bande en déplacement Expired - Lifetime EP0802138B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19615370A DE19615370A1 (de) 1996-04-19 1996-04-19 Verfahren und Vorrichtung zum Durchtrennen einer laufenden Warenbahn
DE19615370 1996-04-19

Publications (3)

Publication Number Publication Date
EP0802138A2 true EP0802138A2 (fr) 1997-10-22
EP0802138A3 EP0802138A3 (fr) 1998-05-13
EP0802138B1 EP0802138B1 (fr) 2001-10-24

Family

ID=7791668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97105845A Expired - Lifetime EP0802138B1 (fr) 1996-04-19 1997-04-09 Dispositif pour couper une bande en déplacement

Country Status (6)

Country Link
US (1) US6173636B1 (fr)
EP (1) EP0802138B1 (fr)
KR (1) KR970070334A (fr)
CN (1) CN1171323A (fr)
DE (2) DE19615370A1 (fr)
ID (1) ID17638A (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7250440B2 (en) 2003-08-12 2007-07-31 Wyeth (Hydroxyphenyl)-1H-indole-3-carbaldehyde oxime derivatives as estrogenic agents

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0936166A1 (fr) * 1998-02-10 1999-08-18 E.I. Du Pont De Nemours And Company Dispositif de coupe à haute vitesse
DE19914524A1 (de) * 1999-03-30 2000-10-05 Voith Sulzer Papiertech Patent Abschlagvorrichtung zum Durchtrennen einer laufenden Materialbahn, insbesondere aus Papier oder Karton, Messerträger, Kolben-Kolbenstangen-Einheit
DE60026207T8 (de) * 1999-07-27 2007-03-29 Noritsu Koki Co., Ltd. Schneidevorrichtung für blattförmiges gefördertes Material in einem fotografischen Behandlungsgerät
FI117281B (fi) * 2002-12-18 2006-08-31 Metso Paper Inc Katkaisulaite
ITFI20030118A1 (it) * 2003-04-28 2004-10-29 Fabio Perini Dispositivo e metodo per provocare lo strappo di nastri cartacei in macchine ribobinatrici
DE102011007457A1 (de) * 2011-04-15 2012-10-18 Robert Bosch Gmbh Verfahren und Vorrichtung zur Verbindung von zwei Folienbahnen
CN102788799A (zh) * 2012-07-27 2012-11-21 昆山微容电子企业有限公司 自动外观筛选装置

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Publication number Priority date Publication date Assignee Title
US3195827A (en) * 1961-12-18 1965-07-20 Champlain Company Inc Splicer for moving web
US3591279A (en) * 1969-06-02 1971-07-06 Xerox Corp Cut and deflect web drive apparatus
US3770551A (en) * 1969-08-01 1973-11-06 Gen Mills Inc Splicer tape assembly for use in tape winding machines
JPS4912329B1 (fr) * 1970-02-17 1974-03-23
US3702086A (en) * 1970-12-21 1972-11-07 Eastman Kodak Co Apparatus and method for handling a web
US3854357A (en) * 1972-09-20 1974-12-17 Eastman Kodak Co Apparatus for removing an imperfect portion of a web
GB1440926A (en) * 1972-10-31 1976-06-30 Schmermund A Device for cutting continuous webs
GB1461572A (en) * 1973-03-09 1977-01-13 Masson Scott Thrissell Eng Ltd Web guide sysstems
FR2306052A1 (fr) * 1975-04-02 1976-10-29 Balle Erik Procede et dispositif pour le coupage par un projectile mu par explosif
US4056024A (en) * 1975-10-31 1977-11-01 Pako Corporation Web advancement and cutting mechanism and method
US4094727A (en) * 1976-12-17 1978-06-13 Burroughs Corporation Sheet splicer
JPS6481745A (en) 1987-06-23 1989-03-28 Voith Gmbh J M Suction box
DE3815277A1 (de) * 1987-06-23 1989-01-12 Voith Gmbh J M Saugkasten
US4907014A (en) * 1989-05-18 1990-03-06 Calcomp Inc. Safely retracting paper-cutting apparatus for a roll paper printer
US5146829A (en) * 1991-02-22 1992-09-15 Appleton Papers Inc. Straight cut coater unwind knife
DE9413363U1 (de) * 1994-08-22 1994-11-03 J.M. Voith Gmbh, 89522 Heidenheim Vorrichtung zum Quertrennen einer laufenden Warenbahn

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7250440B2 (en) 2003-08-12 2007-07-31 Wyeth (Hydroxyphenyl)-1H-indole-3-carbaldehyde oxime derivatives as estrogenic agents

Also Published As

Publication number Publication date
EP0802138B1 (fr) 2001-10-24
US6173636B1 (en) 2001-01-16
DE59705026D1 (de) 2001-11-29
KR970070334A (ko) 1997-11-07
ID17638A (id) 1998-01-15
EP0802138A3 (fr) 1998-05-13
CN1171323A (zh) 1998-01-28
DE19615370A1 (de) 1997-10-23

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