EP0525450A1 - Dispositif pour couper et maintenir une bande déchirée - Google Patents

Dispositif pour couper et maintenir une bande déchirée Download PDF

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Publication number
EP0525450A1
EP0525450A1 EP92111510A EP92111510A EP0525450A1 EP 0525450 A1 EP0525450 A1 EP 0525450A1 EP 92111510 A EP92111510 A EP 92111510A EP 92111510 A EP92111510 A EP 92111510A EP 0525450 A1 EP0525450 A1 EP 0525450A1
Authority
EP
European Patent Office
Prior art keywords
knife
web
cutter
bar
elastic strips
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
EP92111510A
Other languages
German (de)
English (en)
Other versions
EP0525450B1 (fr
Inventor
Alfredo Rosas
Karl Veh
Werner Kettl
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.)
Grafotec GmbH
Original Assignee
Grafotec Kotterer 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 Grafotec Kotterer GmbH filed Critical Grafotec Kotterer GmbH
Publication of EP0525450A1 publication Critical patent/EP0525450A1/fr
Application granted granted Critical
Publication of EP0525450B1 publication Critical patent/EP0525450B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41F—PRINTING MACHINES OR PRESSES
    • B41F33/00—Indicating, counting, warning, control or safety devices
    • B41F33/18—Web break detection
    • 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
    • B26D7/01—Means for holding or positioning work
    • B26D7/02—Means for holding or positioning work with clamping means
    • B26D7/025—Means for holding or positioning work with clamping means acting upon planar surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41P—INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS
    • B41P2233/00—Arrangements for the operation of printing presses
    • B41P2233/20—Safety devices preventing damage
    • B41P2233/21—Safety devices preventing damage by cutting the web in case of web break
    • 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
    • Y10T83/525—Operation controlled by detector means responsive to work
    • Y10T83/541—Actuation of tool controlled in response to work-sensing means
    • Y10T83/543—Sensing means responsive to work indicium or irregularity
    • 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
    • Y10T83/748—With work immobilizer
    • Y10T83/7487—Means to clamp work
    • Y10T83/7493—Combined with, peculiarly related to, other element
    • Y10T83/7513—Tool or tool support on movable clamp jaw
    • 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
    • Y10T83/8752—Tool moves work to and against cooperating tool
    • 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
    • Y10T83/8821—With simple rectilinear reciprocating motion only

Definitions

  • the invention relates to a device for severing and holding a torn web for a web-processing machine, in particular a web-fed rotary printing press that prints on a printing material web, with a knife bar that has a fixed knife, crosses the transport plane of the web, and a lifting bar that has an increase that can be brought into active engagement with the knife which can be raised and lowered by means of an associated extension device which can be activated by means of a web break detector.
  • a device of this type is known for example from DE 38 22 497 A1.
  • the knife and the elevation of the walking beam are arranged so that the knife can run past a side flank of the elevation. This results in an asymmetrical structure.
  • the consequence of this is that in the event that one of the two ends of the cut paper web is to be held and only the other is to be released, execution is necessary for both alternatives. Since both alternatives occur in practice, there has so far been a lot of construction work. In this context it can be assumed that one strand of a cut paper web is generally wound onto a roll and must therefore be released at the interface, while the other strand reaching to the web break is to be held.
  • Another disadvantage of the known arrangements is that the web cannot be cut reliably enough by means of the knife passing on a flank of the elevation on the lifting beam side.
  • the web which is practically tension-free as a result of the web break, can avoid the knife here.
  • the known arrangements are not particularly useful when processing thicker materials.
  • Another, very special disadvantage of the known arrangements can also be seen in the high risk of injury. In this context, it can be assumed that the knife passing a flank of the elevation is easily accessible from the side.
  • the knife bar contains two, the knife between them, the same, rail-shaped knife carrier, which are provided in the area of their side facing the walking beam with symmetrically arranged holders for the knife flanking, elastic strips which are opposite the cutting edge of the Knife protrude and are at least spaced from each other by the width of the elevation of the walking beam, which is symmetrical to the cutting plane and has two the flanking clamping surfaces associated with the elastic strips provided with a cutting groove into which the knife can be inserted.
  • the clamping of the knife between two knife carriers which can have a closed profile cross section as a result of the stationary knife arrangement, results in high stability and torsional rigidity.
  • Another advantage of the measures according to the invention can be seen in the fact that the lateral strips, one of which can function as a clamping strip, simultaneously shield the lateral access to the knife.
  • the elastic strips act as buffers, so that when the device according to the invention is slammed, metal does not meet metal, which is not only advantageous in terms of preventing impact noise, but also reduces the risk of accidents.
  • an operator may reach into the device according to the invention with one finger or with the entire hand. If the lifting beam is actuated at such a moment, the fingers or the hand are pinched, but the elastic strips bring about buffering, which dampens the impact.
  • EP 0 037 642 B1 also provides a device for separating and holding a torn web of printing material, in which the cutter bar is provided with two elastic strips projecting from the cutter flanked by it.
  • the knife is not arranged stationary, but is moved via a lever arrangement by means of the walking beam. This practically makes a symmetrical arrangement impossible, not to mention the loss of time associated with the double movement.
  • the walking beam needs a large stroke despite the double movement in order to create enough space for the fluttering movements of the web.
  • the cutter bar here requires a cross section which is open at the bottom, so that a torsionally soft arrangement results.
  • the moving knife only cuts past a flank of an elevation of the walking beam, so that problematic material is not cut reliably enough.
  • the web holding and separating device on which the drawings are based consists, as can best be seen from FIG. 1, of a frame 3 which is attached to the side walls 1 of a web processing machine, for example a web-fed rotary printing press, and which has a passage window 4 for the web 5 limited.
  • the upper and lower frame legs arranged to cross the transport plane of the web 5 are connected to one another by side shields 6.
  • the lower frame leg is formed by a stationary traverse 7 on which a walking beam 8 is received.
  • the upper frame leg is designed as a stationary knife bar 10 having a stationary knife 9.
  • Devices of this type are required in particular between the last printing unit and a dryer of a web-fed rotary printing press arranged downstream of it, but can also be provided between the individual printing units.
  • the lifting beam 8 is activated by means of a web break detector which is responsive in the event of a web break and is not shown here.
  • the knife bar 10 comprises, as can be seen in FIG. 2, two rectangular profile tube sections which act as knife carriers 11 and with which the knife 9 flanked thereby can be screwed.
  • the two knife carriers 11 are arranged symmetrically to the sectional plane s indicated by a dash-dotted line.
  • the knife 9 can be stepped or, as here, underlaid by means of a washer 12. The knife 9 projects with its cutting edge downward over the underside of the knife carrier 11.
  • holders 13 are provided, arranged symmetrically to the cutting plane s, for rubber strips 14a, 14b projecting downward over the cutting edge of the knife 9.
  • the holders 13 are designed as H-shaped profiles, which are attached with their upper legs here with the interposition of a washer 15 on the respectively assigned knife carrier 11 and which have a downwardly open groove into which the respectively assigned rubber strip 14a, 14b can be inserted .
  • the rubber strips 14a, 14b are of different heights, so that one rubber strip, here the rubber strip 14a shown on the right, comes into play earlier than the other.
  • the walking beam 8 as FIG. 2 further shows, consists of a rail 16 which is approximately U-shaped in cross-section and is open at the bottom and into which the crossmember 7 can be immersed in the waiting position shown by solid lines.
  • a strip-shaped elevation 17 is provided, which has a cutting groove 18 arranged symmetrically to the cutting plane s.
  • a rubber strip 19 containing the cutting groove 18 can be provided, which is inserted into a groove delimited by two webs 20 formed on the rail 16.
  • Flat clamping surfaces 21 formed on both sides of the elevation 17 are formed by the upper web of the rail 16.
  • the clear distance between the rubber bar 14a, 14b on the knife bar side corresponds at least to the width of the elevation 17 and is approximately three times as large in the exemplary embodiment shown. Between the rubber strips 14a, 14b there is accordingly a wide channel 24 into which the knife 9 protrudes from above and into which the elevation 17 can be inserted from below.
  • the width of the rail 16 corresponds at least to the distance between the flanks of the rubber strips 14a, 14b facing away from one another, so that there is an associated clamping surface 21 across their entire width.
  • the height of the lifting beam-side increase 17 is less than the increase formed by the rubber strips 14a, 14b of the knife beam, so that the rubber strip 19 containing the cutting groove 18 does not completely touch the knife carrier 11 in the operating position indicated by dash-dotted lines.
  • the walking beam 8 is by an Ausffahrinrich device 22 movable from the waiting position indicated by solid lines into the operating position indicated by dash-dotted lines.
  • the extension device 22 can contain a swivel lever arrangement with swivel levers mounted on the cross member 7, which engage an associated window of the cross member 7 on the rail 16 and at least one of which is designed as a toggle lever, which on the other hand is equipped with an actuating cylinder, for example in the form of a pneumatic cylinder, is connected, which can be acted upon by means of the web break detector with pressure medium.
  • the extension device 22 including the lifting cylinder is located within the cross member 7.
  • the lifting beam 8 and the cutter beam 10 are spaced far apart, so that the web 5 does not touch it even in the event of a strong flutter movement.
  • the walking beam 8 is raised.
  • the higher rubber strip 14a of the cutter bar 10 runs onto the opposite clamping surface 21 of the walking beam.
  • the knife 9 comes into engagement with the cutting groove 18.
  • the second, somewhat lower rubber strip 14b remains slightly spaced from the opposite clamping surface 21. The web 5 is therefore clamped in the area of the higher rubber bar 14a, but not in the area of the lower rubber bar 14b.
  • the web 5 is cut through by the knife 9 moving into the cutting groove 18, the web end produced thereby, facing the higher rubber bar 14 a, being held by the latter, while the other web end is held over the gap 23 remaining between the lower rubber bar and the clamping surface 21 spaced therefrom can be deducted, as indicated by an arrow in Figure 2.
  • the right side of the web is clamped. If the left side of the web is to be clamped, this can be accomplished by simply mounting the cutter bar 10 in a position turned through 180 °.
  • the rubber strips 14a, 14b simultaneously act as damping elements, which ensure that metal does not meet metal under any circumstances.
  • the channel 24 in which the cutting process takes place is laterally shielded. If an operator should get his fingers between the knife bar and the walking bar, the rubber bar 14a, 14b on the knife bar side and the rubber bar 19 on the walking bar side also provide the damping that is necessary to avoid serious injuries.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Details Of Cutting Devices (AREA)
  • Rotary Presses (AREA)
  • Adhesive Tape Dispensing Devices (AREA)
  • Control And Other Processes For Unpacking Of Materials (AREA)
EP92111510A 1991-07-23 1992-07-07 Dispositif pour couper et maintenir une bande déchirée Expired - Lifetime EP0525450B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4124391A DE4124391C2 (de) 1991-07-23 1991-07-23 Vorrichtung zum Durchtrennen und Halten einer gerissenen Bahn
DE4124391 1991-07-23

Publications (2)

Publication Number Publication Date
EP0525450A1 true EP0525450A1 (fr) 1993-02-03
EP0525450B1 EP0525450B1 (fr) 1995-10-04

Family

ID=6436829

Family Applications (1)

Application Number Title Priority Date Filing Date
EP92111510A Expired - Lifetime EP0525450B1 (fr) 1991-07-23 1992-07-07 Dispositif pour couper et maintenir une bande déchirée

Country Status (6)

Country Link
US (1) US5239903A (fr)
EP (1) EP0525450B1 (fr)
JP (1) JP3165932B2 (fr)
DE (3) DE4124391C2 (fr)
DK (1) DK0525450T3 (fr)
ES (1) ES2079746T3 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2720330A1 (fr) * 1994-05-26 1995-12-01 Pierre Tesseraud Dispositif coupe bande.
EP0703077A1 (fr) * 1994-09-14 1996-03-27 Acrotec GmbH Dispositif pour éviter des dommages dans un presse d'imprimerie
CN103496015A (zh) * 2013-09-30 2014-01-08 哈尔滨博真科技有限公司 一种具有位置检测功能的多工位高压水切割装置

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6105478A (en) * 1995-12-11 2000-08-22 Philip Morris Incorporated Device for opening and feeding a roll
JP2002505647A (ja) * 1996-10-11 2002-02-19 ケーニツヒ ウント バウエル アクチエンゲゼルシヤフト 印刷キャリアのための保持装置
GB2329861B (en) * 1997-10-01 2000-03-29 Kenneth Hughes Williams Apparatus and method for cutting insulating material
DE10222587A1 (de) * 2002-05-22 2003-12-04 Voith Paper Patent Gmbh Einrichtung zum Behandeln einer entlang eines Materialwegs geführten Materialbahn und Verfahren zur Ausnahmebehandlung, insbesondere zur Reaktion auf einen Bahnabriss
DE10222586A1 (de) * 2002-05-22 2003-12-04 Voith Paper Patent Gmbh Einrichtung zum Behandeln einer entlang eines Materialwegs geführten Materialbahn und Verfahren zur Ausnahmebehandlung, insbesondere zur Reaktion auf einen Bahnabriss
DE102005023396B3 (de) * 2005-05-20 2006-11-02 Michael Nebert Verfahren zum automatisierten Reparieren einer Papierbahn, Vorrichtung hierzu sowie Papierverarbeitungsmaschine
DE102010026409A1 (de) * 2010-07-07 2012-01-12 Wemhöner Systems Technologies AG Verfahren und Vorrichtung zum Durchtrennen einer laufenden Materialbahn
CN117464198B (zh) * 2023-12-13 2024-04-30 浙江嘉益保温科技股份有限公司 一种保温杯生产用环切装置

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2336957A (en) * 1942-10-02 1943-12-14 Bemis Bro Bag Co Cutoff machine
US2653536A (en) * 1951-06-27 1953-09-29 Edwin G Koriath Method and apparatus for control of webs in web-handling machines
EP0037642A1 (fr) * 1980-03-31 1981-10-14 Baldwin Technology Corporation Méthode et dispositif pour découper une bande
DE3431686A1 (de) * 1984-08-29 1986-04-24 Werner J. 8901 Diedorf Kotterer Vorrichtung zum verhindern maschinenschaedigender wickler
DE3439618A1 (de) * 1984-10-30 1986-04-30 Salmco Technik GmbH, 2000 Hamburg Vorrichtung zum herstellen und zufuehren von trennblaettern fuer in scheiben geschnittene lebensmittel
US4799997A (en) * 1987-08-06 1989-01-24 Westvaco Corporation System for sensing a discontinuity in a paper web and containing web puncturing means across the web width
EP0318853A2 (fr) * 1987-12-02 1989-06-07 Grafotec Kotterer Gmbh Dispositif pour éviter d'endommager les machines

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2293721A (en) * 1941-08-11 1942-08-25 Gen Tire & Rubber Co Method of and apparatus for cutting and splicing thick rubber stock and the like
US3082923A (en) * 1959-11-20 1963-03-26 Grace W R & Co Apparatus for cutting sheet material
US3277756A (en) * 1965-04-22 1966-10-11 Donnelley & Sons Co Rotary web cutter and stripper assembly
US3685251A (en) * 1970-03-26 1972-08-22 Mahaffy & Harder Eng Co Automatic packaging apparatus with improved means for cutting and contour trimming of packages
DE8915572U1 (de) * 1989-09-02 1990-10-25 Koenig & Bauer AG, 8700 Würzburg Papierbahntrenn- und -halteeinrichtung

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2336957A (en) * 1942-10-02 1943-12-14 Bemis Bro Bag Co Cutoff machine
US2653536A (en) * 1951-06-27 1953-09-29 Edwin G Koriath Method and apparatus for control of webs in web-handling machines
EP0037642A1 (fr) * 1980-03-31 1981-10-14 Baldwin Technology Corporation Méthode et dispositif pour découper une bande
DE3431686A1 (de) * 1984-08-29 1986-04-24 Werner J. 8901 Diedorf Kotterer Vorrichtung zum verhindern maschinenschaedigender wickler
DE3439618A1 (de) * 1984-10-30 1986-04-30 Salmco Technik GmbH, 2000 Hamburg Vorrichtung zum herstellen und zufuehren von trennblaettern fuer in scheiben geschnittene lebensmittel
US4799997A (en) * 1987-08-06 1989-01-24 Westvaco Corporation System for sensing a discontinuity in a paper web and containing web puncturing means across the web width
EP0318853A2 (fr) * 1987-12-02 1989-06-07 Grafotec Kotterer Gmbh Dispositif pour éviter d'endommager les machines

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2720330A1 (fr) * 1994-05-26 1995-12-01 Pierre Tesseraud Dispositif coupe bande.
EP0686505A1 (fr) * 1994-05-26 1995-12-13 Pierre Tesseraud Dispositif coupe bande
EP0703077A1 (fr) * 1994-09-14 1996-03-27 Acrotec GmbH Dispositif pour éviter des dommages dans un presse d'imprimerie
CN103496015A (zh) * 2013-09-30 2014-01-08 哈尔滨博真科技有限公司 一种具有位置检测功能的多工位高压水切割装置
CN103496015B (zh) * 2013-09-30 2015-08-19 哈尔滨博真科技有限公司 一种具有位置检测功能的多工位高压水切割装置

Also Published As

Publication number Publication date
DE59203886D1 (de) 1995-11-09
EP0525450B1 (fr) 1995-10-04
JPH05237797A (ja) 1993-09-17
DE4124391A1 (de) 1993-01-28
ES2079746T3 (es) 1996-01-16
US5239903A (en) 1993-08-31
JP3165932B2 (ja) 2001-05-14
DE4124391C2 (de) 1995-08-31
DE9116763U1 (de) 1993-11-18
DK0525450T3 (da) 1996-03-04

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