EP1313659B1 - Method and device for shortening the flap of paper following a roll change - Google Patents

Method and device for shortening the flap of paper following a roll change Download PDF

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Publication number
EP1313659B1
EP1313659B1 EP01958007A EP01958007A EP1313659B1 EP 1313659 B1 EP1313659 B1 EP 1313659B1 EP 01958007 A EP01958007 A EP 01958007A EP 01958007 A EP01958007 A EP 01958007A EP 1313659 B1 EP1313659 B1 EP 1313659B1
Authority
EP
European Patent Office
Prior art keywords
separating device
paper strip
flap
envelope
roll change
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
EP01958007A
Other languages
German (de)
French (fr)
Other versions
EP1313659A2 (en
Inventor
Ernst Klas
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.)
Contiweb BV
Original Assignee
Heidelberger Druckmaschinen AG
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 Heidelberger Druckmaschinen AG filed Critical Heidelberger Druckmaschinen AG
Publication of EP1313659A2 publication Critical patent/EP1313659A2/en
Application granted granted Critical
Publication of EP1313659B1 publication Critical patent/EP1313659B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • 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
    • B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
    • B65H19/1805—Flying splicing, i.e. the expiring web moving during splicing contact
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/40—Type of handling process
    • B65H2301/46—Splicing
    • B65H2301/461—Processing webs in splicing process
    • B65H2301/4615—Processing webs in splicing process after splicing
    • B65H2301/46152—Processing webs in splicing process after splicing cutting off tail after (flying) splicing
    • 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
    • Y10T83/04—Processes
    • 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
    • Y10T83/04—Processes
    • Y10T83/0405—With preparatory or simultaneous ancillary treatment of work
    • Y10T83/0443—By fluid application
    • 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
    • Y10T83/04—Processes
    • Y10T83/0448—With subsequent handling [i.e., of product]
    • 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
    • Y10T83/04—Processes
    • Y10T83/0448—With subsequent handling [i.e., of product]
    • Y10T83/0453—By fluid application
    • 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
    • Y10T83/202—With product handling means
    • Y10T83/2066—By fluid current
    • Y10T83/207—By suction 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
    • Y10T83/202—With product handling means
    • Y10T83/2074—Including means to divert one portion of product from another
    • 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
    • Y10T83/202—With product handling means
    • Y10T83/2074—Including means to divert one portion of product from another
    • Y10T83/2083—Deflecting guide
    • 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
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2183—Product mover including gripper means
    • Y10T83/2185—Suction gripper
    • 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
    • Y10T83/902—Plural supply sources
    • 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
    • Y10T83/929—Tool or tool with support
    • Y10T83/9493—Stationary cutter

Definitions

  • the invention relates to a method according to the preamble of claim 1 and a device suitable for carrying out this method according to Preamble of claim 2.
  • the delay time is due to the inertial mass of the Disconnect device and the cycle times of the controller. Depending on the length The delay time remains behind the glue a piece of the end walking path, the so-called flag.
  • the length of the flag doesn't just depend on the delay time, but also on the web speed. Amounts to Example is the delay time 10 ms and the web speed 15 m / s Flag 150 mm long.
  • a driver element for example a Suction roll or a suction belt which is driven at a speed, which is higher than the throughput speed of the paper web.
  • the invention has for its object that method, of which the preamble of claim 1, simplify and also simplified Specify devices according to the preamble of claim 2, which for Implementation of the new procedure are suitable.
  • the first part of the task is characterized by the characteristic of Claim 1 solved. Deviating from the state of the art in the new Do not first separate the flag from the web before moving it from the Driver body is frictionally detected. The driving body engages on the On the web and accelerates it to a compared to the Passing speed of the paper web increased speed. This will the part of the flag reaching to the glue point is arched and in this way from the paper web separated. In this state, the flag reaches the knife and is cut off in the immediate vicinity of the glue point.
  • the second part of the task is characterized by the feature of claim 2 solved.
  • claims 3 to 10 are various embodiments of the device suitable for carrying out the method.
  • a paper web 1 becomes vertical over two deflecting rollers 2, 3 arranged one above the other. Between the two Deflection rollers 2, 3 pass through the paper web 1 in the direction of arrow 4 straight line section.
  • One is rotatable close to the web run mounted suction roller 5 arranged so that it the paper web 1 in a line or preferably touched in the area of a narrow strip.
  • the interior of the Suction roller 5 is connected to the suction side of a fan, not shown.
  • the perforated outer surface of the suction roller 5 is preferably compared to paper a higher coefficient of friction than paper against paper. To do this reach, it is preferably rubberized.
  • the suction roller 5 is not one provided rotary actuator shown.
  • the suction roller 5 is normally when the drive is switched off in a rest position, not shown, in which it does not touch the paper web 1.
  • the suction roll 5 Shortly before a roll change, the suction roll 5 is moved into the position according to FIG. 1 brought. At the same time the fan is switched on.
  • the drive is also switched on, so that the suction roller 5 symbolized by the arrow 7 Direction of rotation rotates.
  • the speed is so high that the surface speed is significantly higher than the throughput speed of the paper web 1 Speed ratio is, for example, between 1.5 and 10.
  • the flag 8 which is initially due to the air resistance smooth on the Paper web 1 abuts, frictionally gripped by the suction roller 5.
  • the outside surface the suction roller 5 is in this case the envelope surface in which the frictional force is effective is.
  • the flag 8 is forward at the surface speed of the suction roller 5 moves, its rear facing the paper web 1 on the paper web 1 slides. As a result, the leading part of the flag 8 bulges out like a wave.
  • the arched flag 8 separated from paper web 1 strikes knife 6 and is cut off to a no longer disturbing remainder. After that the Suction roller 5 brought back to its rest position. This process is repeated every time you change roles, for example at intervals of 20 to 30 Minutes.
  • the device illustrated in Figure 2 differs from that just described described device in that instead of the suction roller 5 an endless, over Deflection rollers 9, 10 revolving suction belt 11 is provided. Between that of Paper web 1 adjacent active strand and the other, returning strand a suction box is arranged on its side facing the active run is open. The suction box is with a not shown in the drawing Fan connected. The upper, upstream deflection roller 9 is in hers Working position so close to the paper web 1 that the suction belt 11, whose outer surface is identical to the envelope surface mentioned in claim 2, the Touched paper web under light pressure.
  • the distance between the other Deflection roller 10 and the paper web 1 is larger, so that the gap widened in a wedge-like manner between the suction belt 11 and the paper web 1 in the direction of passage.
  • the mode of operation agrees with that described in connection with FIG. 1 Mode of action so far that a further explanation is unnecessary.
  • FIG. 3 shows a further embodiment, in which as a driving element Rotor 12 is provided, which is connected to a rotary drive, not shown is.
  • the rotor 12 consists essentially of a shaft 13 and one to it parallel round rod 14, which is rigidly connected to the shaft 13 by radial arms 15 is attached.
  • the rod 14 is provided with a friction-increasing coating.
  • the Distance between the axis of the shaft 13 and in its working position the paper web 1 is a little smaller than the radius of the enveloping surface 16, which the of limited space passing through the rotor 12. In other words, that the rotating in the direction of arrow 7 around the shaft 13 rod 14 slightly to the continuous paper web 1 strikes.
  • the rotor 12 may also comprise a plurality of rods 14 which are attached to the shaft 12 in a star-like manner at uniform angular intervals.
  • a flag that passes the area of action of the rotor 12 receives at least one blow from the rod 14.
  • the length of the Arms 15, the speed of the rotor and the number of rods 14 of the rotor so coordinated so that each continuous flag 8 receives several strokes.
  • the point of the flag hit by the stroke is marked by the Rod 14 moving at a higher speed than paper web 1, frictionally entrained and relative to the paper web 1 in the direction of travel advanced.
  • the leading part of the flag 8 is bulged and from the paper web 1 separated. In this form, the flag 8 arrives at the knife 6 and is cut to an insignificant remainder.
  • Axial rotatable round brush 17 is provided.
  • the center distance of the brush 17 from the paper web 1 is a little smaller than the radius of the enveloping surface 16. If the Brush 17 is in its working position and rotates in the direction of arrow 7, the paper web 1 is in the region of a narrow strip by the brush 17th striped. If a flag 8 in the strip-shaped area of action of the brush 17 arrives, it is caused by friction relative to the paper web 1 in the direction of travel moves, moving the leading part of the flag 8, the area of influence has already happened bulges.
  • a round brush 17 is also provided as a driving element.
  • the back of the continuous paper web 1 is in each case opposite the brush 17 Support member arranged, namely according to Figure 5, a support roller 18, according to Figure 6 a sliding plate 19 and, according to FIG. 7, a round brush 20.
  • the arrangement of a Support organ is particularly recommended if a round as a driving element Brush 17 is provided.
  • a sufficient normal force is created by the support member ensures what is required for sufficient friction.
  • the separation effect is achieved by the repulsive effect of electric charges amplified by touch with the brushes 17, 20 both on the flag 8 and on the paper web 1 accumulate.

Landscapes

  • Replacement Of Web Rolls (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Advancing Webs (AREA)
  • Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)

Abstract

A flap projecting from a glue joint between two paper strips after an on-the-fly supply roll change is shortened by continuously displacing the strips in a straight line, in a travel direction, and at a travel speed along a path such that the flap lies flatly against an outer face of the strips and engaging at least a part of a separating device against the outer face in the path. At least the part of the separating device engaging the strip is displaced in the travel direction at a speed greater than the travel speed such that, when the separating device engages the flap, the flap is bowed out away from the outer face downstream of the separating device. A blade is juxtaposed with the outer face of the strip immediately downstream of the separating device such that the bowed out flap engages and is cut by the blade.

Description

Die Erfindung betrifft ein Verfahren gemäß dem Oberbegriff des Anspruchs 1 und eine zur Durchführung dieses Verfahrens geeignete Vorrichtung gemäß dem Oberbegriff des Anspruchs 2.The invention relates to a method according to the preamble of claim 1 and a device suitable for carrying out this method according to Preamble of claim 2.

Kontinuierlich arbeitende Papierverarbeitungsmaschinen, insbesondere Rollenrotationsmaschinen, werden mit Papierbahnen beschickt, die von Rollen abgewickelt werden. Wenn eine Rolle zu Ende geht, wird sie durch eine neue Rolle ersetzt, ohne daß die Verarbeitungsmaschine stillgesetzt wird. Es sind Rollenwechsler bekannt, die mit dem sogenannten "fliegenden Rollenwechsel" arbeiten. Dabei wird der Anfang einer in Wartestellung befindlichen neuen Rolle zunächst mit einer Klebespitze versehen. Dann wird die neue Rolle in Rotation versetzt und auf eine Umfangsgeschwindigkeit gebracht, die mit der Geschwindigkeit der von der fast leeren Rolle ablaufenden Bahn synchronisiert ist. Die Bahn wird im richtigen Zeitpunkt an die neue Rolle angedrückt, so daß sie diese im Bereich der Klebespitze berührt. Dadurch wird der Anfang der neuen Bahn an die ablaufende Bahn angeklebt. Die zu Ende gehende Bahn wird nach einer kurzen Verzögerungszeit abgetrennt. Die Verzögerungszeit ist durch die träge Masse der Trennvorrichtung und die Zykluszeiten der Steuerung bedingt. Je nach der Länge der Verzögerungszeit verbleibt hinter der Klebstelle ein Reststück der zu Ende gehenden Bahn, die sogenannte Fahne. Die Länge der Fahne hängt nicht nur von der Verzögerungszeit, sondern auch von der Bahngeschwindigkeit ab. Beträgt zum Beispiel die Verzögerungszeit 10 ms und die Bahngeschwindigkeit 15 m/s, so ist die Fahne 150 mm lang.Continuously working paper processing machines, in particular Roll rotation machines are loaded with paper webs, that of rolls be handled. When a role ends, it becomes a new role replaced without stopping the processing machine. There are Reel changer known with the so-called "flying reel change" work. This is the beginning of a new role that is on hold first add an adhesive tip. Then the new role in rotation offset and brought to a peripheral speed that with the Speed of the web running from the almost empty roll is synchronized. The web is pressed onto the new roll at the right time so that it can be pressed touched in the area of the adhesive tip. This marks the beginning of the new railway running web glued. The end of the path will be after a short Delay time separated. The delay time is due to the inertial mass of the Disconnect device and the cycle times of the controller. Depending on the length The delay time remains behind the glue a piece of the end walking path, the so-called flag. The length of the flag doesn't just depend on the delay time, but also on the web speed. Amounts to Example is the delay time 10 ms and the web speed 15 m / s Flag 150 mm long.

Es hat sich gezeigt, daß derartige Fahnen in nachgeschalteten Verarbeitungsstationen Störungen verursachen können. Die DE 198 04 415 C1, auf der die Erfindung aufbaut, beschreibt ein Verfahren, mit dem es gelingt, die Fahne bis auf einen unschädlichen Rest von höchstens wenigen mm zu kürzen. Sie beschreibt auch mehrere zur Durchführung des Verfahrens geeignete Vorrichtungen. Bei dem bekannten Verfahren wird die zusammengeklebte Papierbahn durch eine Krümmung geführt, deren Krümmungsmittelpunkt auf der von der Fahne abgewandten Seite liegt. Wenn die Fahne die Krümmung durchläuft, wird sie durch die Zentrifugalkraft aufgerichtet und anschließend von einem Messer, an dem die Papierbahn in ganz kurzem Abstand vorbeiläuft, abgeschnitten. Die aufrichtende Wirkung der Zentrifugalkraft kann durch einen Luftstoß unterstützt werden, der zwischen Papierbahn und Fahne in Richtung der Bahnbewegung eingeblasen wird. Um einen sicheren Schnitt zu gewährleisten, ist bei einer Ausführungsform vor dem Messer in einem Abstand von 20 bis 60 mm von der durchlaufenden Papierbahn ein Mitnehmerorgan angeordnet, zum Beispiel eine Saugwalze oder ein Saugband, welches mit einer Geschwindigkeit angetrieben ist, die höher liegt als die Durchlaufgeschwindigkeit der Papierbahn. Die durch die Zentrifugalkraft und gegebenenfalls durch einen zusätzlichen Luftstoß von der Papierbahn separierte Fahne wird durch die Saugwirkung an dem Mitnehmerorgan festgehalten; durch Reibschluß beschleunigt und so dem Messer zugeführt.It has been shown that such flags in downstream Processing stations can cause interference. DE 198 04 415 C1 who builds the invention describes a method with which it succeeds, the flag cut to a harmless remainder of at most a few mm. she also describes several suitable for performing the method Devices. In the known method, the glued together Paper web guided through a curvature, the center of curvature on the lies away from the flag. When the flag goes through the curvature, it is erected by centrifugal force and then by a knife, where the paper web passes at a very short distance, cut off. The The straightening effect of centrifugal force can be supported by an air blast between the paper web and the flag in the direction of the web movement is blown in. To ensure a safe cut, a Embodiment in front of the knife at a distance of 20 to 60 mm from the continuous paper web arranged a driver element, for example a Suction roll or a suction belt which is driven at a speed, which is higher than the throughput speed of the paper web. The through the Centrifugal force and possibly by an additional air blast from the Paper web separated flag is due to the suction effect on the driving element held; accelerated by friction and thus fed to the knife.

Der Erfindung liegt die Aufgabe zugrunde, daß Verfahren, von dem der Oberbegriff des Anspruchs 1 ausgeht, zu vereinfachen und außerdem vereinfachte Vorrichtungen gemäß dem Oberbegriff des Anspruchs 2 anzugeben, die zur Durchführung des neuen Verfahrens geeignet sind.The invention has for its object that method, of which the preamble of claim 1, simplify and also simplified Specify devices according to the preamble of claim 2, which for Implementation of the new procedure are suitable.

Der erste Teil der gestellten Aufgabe wird durch das kennzeichnende Merkmal des Anspruchs 1 gelöst. Abweichend vom Stand der Technik wird bei dem neuen Verfahren die Fahne nicht zunächst von der Bahn separiert, bevor sie von dem Mitnehmerorgan reibschlüssig erfaßt wird. Das Mitnehmerorgan greift an der an der Bahn anliegenden Fahne an und beschleunigt sie auf eine im Vergleich zur Durchlaufgeschwindigkeit der Papierbahn erhöhte Geschwindigkeit. Dadurch wird der bis zur Klebstelle reichende Teil der Fahne ausgewölbt und auf diese Weise von der Papierbahn separiert. In diesem Zustand gelangt die Fahne zu dem Messer und wird in unmittelbarer Nähe der Klebstelle abgeschnitten. The first part of the task is characterized by the characteristic of Claim 1 solved. Deviating from the state of the art in the new Do not first separate the flag from the web before moving it from the Driver body is frictionally detected. The driving body engages on the On the web and accelerates it to a compared to the Passing speed of the paper web increased speed. This will the part of the flag reaching to the glue point is arched and in this way from the paper web separated. In this state, the flag reaches the knife and is cut off in the immediate vicinity of the glue point.

Der zweite Teil der gestellten Aufgabe wird durch das Merkmal des Anspruchs 2 gelöst.The second part of the task is characterized by the feature of claim 2 solved.

Gegenstand der Ansprüche 3 bis 10 sind verschiedene Ausführungsbeispiele der zur Durchführung des Verfahrens geeigneten Vorrichtung.The subject of claims 3 to 10 are various embodiments of the device suitable for carrying out the method.

Die Zeichnung dient zur Erläuterung der Erfindung. Die Figuren 1 bis 7 veranschaulichen schematisch je ein Ausführungsbeispiel der Erfindung.The drawing serves to explain the invention. Figures 1 to 7 illustrate schematically an embodiment of the invention.

Wie man aus Figur 1 erkennt, wird eine Papierbahn 1 über zwei senkrecht übereinander angeordnete Umlenkrollen 2, 3 geführt. Zwischen den beiden Umlenkrollen 2, 3 durchläuft die Papierbahn 1 in Richtung des Pfeils 4 einen gradlinigen Streckenabschnitt. Dem Bahnlauf eng benachbart ist eine drehbar gelagerte Saugwalze 5 angeordnet, so daß sie die Papierbahn 1 in einer Linie oder vorzugsweise im Bereich eines schmalen Streifens berührt. Der Innenraum der Saugwalze 5 ist mit der Saugseite eines nicht dargestellten Ventilators verbunden. Die perforierte Mantelfläche der Saugwalze 5 hat vorzugsweise gegenüber Papier einen höheren Reibungskoeffizienten als Papier gegen Papier. Um dies zu erreichen, ist sie vorzugsweise gummiert. Die Saugwalze 5 ist mit einem nicht dargestellten Drehantrieb versehen. In geringem Abstand unter der Saugwalze 5 ist ein Messer 6 angeordnet. Seine Schneide, die vorzugsweise gezackt ist, weist zu der Saugwalze 5, das heißt gegen die Durchlaufrichtung der Papierbahn 1. Der Abstand zwischen Papierbahn 1 und Messer 6 ist maßgebend für die Länge des Restes der Fahne; er beträgt daher vorzugsweise höchstens wenige mm.As can be seen from FIG. 1, a paper web 1 becomes vertical over two deflecting rollers 2, 3 arranged one above the other. Between the two Deflection rollers 2, 3 pass through the paper web 1 in the direction of arrow 4 straight line section. One is rotatable close to the web run mounted suction roller 5 arranged so that it the paper web 1 in a line or preferably touched in the area of a narrow strip. The interior of the Suction roller 5 is connected to the suction side of a fan, not shown. The perforated outer surface of the suction roller 5 is preferably compared to paper a higher coefficient of friction than paper against paper. To do this reach, it is preferably rubberized. The suction roller 5 is not one provided rotary actuator shown. A short distance below the suction roller 5 a knife 6 is arranged. Its cutting edge, which is preferably serrated, assigns the suction roller 5, that is against the direction of travel of the paper web 1. Der Distance between paper web 1 and knife 6 is decisive for the length of the Rest of the flag; it is therefore preferably at most a few mm.

Im Betrieb befindet sich die Saugwalze 5 normalerweise bei abgeschaltetem Antrieb in einer nicht gezeichneten Ruhestellung, in der sie die Papierbahn 1 nicht berührt. Kurz vor einem Rollenwechsel wird die Saugwalze 5 in die Stellung gemäß Figur 1 gebracht. Gleichzeitig wird der Ventilator eingeschaltet. Der Antrieb wird ebenfalls eingeschaltet, so daß die Saugwalze 5 in dem durch den Pfeil 7 symbolisierten Drehsinn rotiert. Die Drehzahl ist so hoch, daß die Oberflächengeschwindigkeit deutlich höher liegt als die Durchlaufgeschwindigkeit der Papierbahn 1. Das Geschwindigkeitsverhältnis liegt zum Beispiel zwischen 1,5 und 10. Sobald nun die Klebestelle die Berührungslinie zwischen Saugwalze 5 und Papierbahn 1 passiert hat, wird die Fahne 8, die zunächst wegen des Luftwiderstandes glatt an der Papierbahn 1 anliegt, reibschlüssig von der Saugwalze 5 erfaßt. Die Außenfläche der Saugwalze 5 ist in diesem Falle die Hüllfläche, in der die Reibungskraft wirksam ist. Die Fahne 8 wird mit der Oberflächengeschwindigkeit der Saugwalze 5 vorwärts bewegt, wobei ihre der Papierbahn 1 zugewandte Rückseite auf der Papierbahn 1 gleitet. Dadurch wölbt sich der voreilende Teil der Fahne 8 wellenartig aus. Die ausgewölbte, von der Papierbahn 1 separierte Fahne 8 stößt auf das Messer 6 und wird dabei bis auf einen nicht mehr störenden Rest abgeschnitten. Danach wird die Saugwalze 5 wieder in ihre Ruhestellung gebracht. Dieser Vorgang wiederholt sich bei jedem Rollenwechsel, das heißt zum Beispiel in Abständen von 20 bis 30 Minuten.In operation, the suction roller 5 is normally when the drive is switched off in a rest position, not shown, in which it does not touch the paper web 1. Shortly before a roll change, the suction roll 5 is moved into the position according to FIG. 1 brought. At the same time the fan is switched on. The drive is also switched on, so that the suction roller 5 symbolized by the arrow 7 Direction of rotation rotates. The speed is so high that the surface speed is significantly higher than the throughput speed of the paper web 1 Speed ratio is, for example, between 1.5 and 10. As soon as the Adhesive point passes the line of contact between suction roller 5 and paper web 1 has, the flag 8, which is initially due to the air resistance smooth on the Paper web 1 abuts, frictionally gripped by the suction roller 5. The outside surface the suction roller 5 is in this case the envelope surface in which the frictional force is effective is. The flag 8 is forward at the surface speed of the suction roller 5 moves, its rear facing the paper web 1 on the paper web 1 slides. As a result, the leading part of the flag 8 bulges out like a wave. The arched flag 8 separated from paper web 1 strikes knife 6 and is cut off to a no longer disturbing remainder. After that the Suction roller 5 brought back to its rest position. This process is repeated every time you change roles, for example at intervals of 20 to 30 Minutes.

Die in Figur 2 veranschaulichte Vorrichtung unterscheidet sich von der soeben beschriebenen Vorrichtung dadurch, daß statt der Saugwalze 5 ein endloses, über Umlenkrollen 9, 10 umlaufendes Saugband 11 vorgesehen ist. Zwischen dem der Papierbahn 1 benachbarten aktiven Trum und dem anderen, rücklaufenden Trum ist ein Saugkasten angeordnet, der an seiner dem aktiven Trum zugekehrten Seite offen ist. Der Saugkasten ist mit einem in der Zeichnung nicht dargestellten Ventilator verbunden. Die obere, zulaufseitige Umlenkrolle 9 ist in ihrer Arbeitsstellung so nah bei der Papierbahn 1 angeordnet, daß das Saugband 11, dessen Außenfläche mit der in Anspruch 2 erwähnten Hüllfläche identisch ist, die Papierbahn unter leichtem Druck berührt. Der Abstand zwischen der anderen Umlenkrolle 10 und der Papierbahn 1 ist größer, so daß sich der Zwischenraum zwischen Saugband 11 und Papierbahn 1 in Durchlaufrichtung keilartig erweitert. Die Wirkungsweise stimmt mit der im Zusammenhang mit Figur 1 beschriebenen Wirkungsweise soweit überein, daß sich eine weitere Erläuterung erübrigt.The device illustrated in Figure 2 differs from that just described described device in that instead of the suction roller 5 an endless, over Deflection rollers 9, 10 revolving suction belt 11 is provided. Between that of Paper web 1 adjacent active strand and the other, returning strand a suction box is arranged on its side facing the active run is open. The suction box is with a not shown in the drawing Fan connected. The upper, upstream deflection roller 9 is in hers Working position so close to the paper web 1 that the suction belt 11, whose outer surface is identical to the envelope surface mentioned in claim 2, the Touched paper web under light pressure. The distance between the other Deflection roller 10 and the paper web 1 is larger, so that the gap widened in a wedge-like manner between the suction belt 11 and the paper web 1 in the direction of passage. The mode of operation agrees with that described in connection with FIG. 1 Mode of action so far that a further explanation is unnecessary.

Figur 3 zeigt ein weiteres Ausführungsbeispiel, bei dem als Mitnehmerorgan ein Rotor 12 vorgesehen ist, der mit einem nicht dargestellten Drehantrieb verbunden ist. Der Rotor 12 besteht im wesentlichen aus einer Welle 13 und einer zu ihr parallelen runden Stange 14, die durch radiale Arme 15 starr an der Welle 13 befestigt ist. Die Stange 14 ist mit einem reibungserhöhenden Belag versehen. Der Abstand zwischen der Achse der in ihrer Arbeitsstellung befindlichen Welle 13 und der Papierbahn 1 ist ein wenig kleiner als der Radius der Hüllfläche 16, die den von dem Rotor 12 durchlaufenden Raum begrenzt. Das bedeutet mit anderen Worten, daß die in Richtung des Pfeils 7 um die Welle 13 kreisende Stange 14 leicht an die durchlaufende Papierbahn 1 anschlägt.Figure 3 shows a further embodiment, in which as a driving element Rotor 12 is provided, which is connected to a rotary drive, not shown is. The rotor 12 consists essentially of a shaft 13 and one to it parallel round rod 14, which is rigidly connected to the shaft 13 by radial arms 15 is attached. The rod 14 is provided with a friction-increasing coating. The Distance between the axis of the shaft 13 and in its working position the paper web 1 is a little smaller than the radius of the enveloping surface 16, which the of limited space passing through the rotor 12. In other words, that the rotating in the direction of arrow 7 around the shaft 13 rod 14 slightly to the continuous paper web 1 strikes.

Es versteht sich, daß der Rotor 12 auch mehrere Stangen 14 umfassen kann, die sternartig in gleichmäßigen Winkelabständen an der Welle 12 befestigt sind.It is understood that the rotor 12 may also comprise a plurality of rods 14 which are attached to the shaft 12 in a star-like manner at uniform angular intervals.

Im Betrieb erhält eine Fahne, die den Einwirkungsbereich des Rotors 12 passiert, mindestens einen Schlag von der Stange 14. Vorzugsweise sind die Länge des Arms 15, die Drehzahl des Rotors und die Anzahl der Stangen 14 des Rotors so aufeinander abgestimmt, daß jede durchlaufende Fahne 8 mehrere Schläge erhält. Bei jedem Schlag wird die von dem Schlag getroffene Stelle der Fahne durch die Stange 14, die sich mit höherer Geschwindigkeit bewegt als die Papierbahn 1, reibschlüssig mitgenommen und relativ zu der Papierbahn 1 in Durchlaufrichtung vorgeschoben. Dadurch wird der voreilende Teil der Fahne 8 ausgewölbt und von der Papierbahn 1 separiert. In dieser Form gelangt die Fahne 8 zu dem Messer 6 und wird bis auf einen unbedeutenden Rest abgeschnitten.In operation, a flag that passes the area of action of the rotor 12 receives at least one blow from the rod 14. Preferably, the length of the Arms 15, the speed of the rotor and the number of rods 14 of the rotor so coordinated so that each continuous flag 8 receives several strokes. With each stroke the point of the flag hit by the stroke is marked by the Rod 14 moving at a higher speed than paper web 1, frictionally entrained and relative to the paper web 1 in the direction of travel advanced. As a result, the leading part of the flag 8 is bulged and from the paper web 1 separated. In this form, the flag 8 arrives at the knife 6 and is cut to an insignificant remainder.

Bei dem Ausführungsbeispiel gemäß Figur 4 ist als Mitnehmerorgan eine um ihre Achse drehbare runde Bürste 17 vorgesehen. Der Achsabstand der Bürste 17 von der Papierbahn 1 ist ein wenig kleiner als der Radius der Hüllfläche 16. Wenn die Bürste 17 sich in ihrer Arbeitsstellung befindet und in Richtung des Pfeiles 7 rotiert, wird die Papierbahn 1 im Bereich eines schmalen Streifens von der Bürste 17 gestreift. Wenn eine Fahne 8 in den streifenförmigen Einwirkungsbereich der Bürste 17 gelangt, wird sie durch Reibung relativ zur Papierbahn 1 in Durchlaufrichtung bewegt, wobei sich der vorlaufende Teil der Fahne 8, der den Einwirkungsbereich schon passiert hat, auswölbt.In the exemplary embodiment according to FIG. 4, one is around her as a driving element Axial rotatable round brush 17 is provided. The center distance of the brush 17 from the paper web 1 is a little smaller than the radius of the enveloping surface 16. If the Brush 17 is in its working position and rotates in the direction of arrow 7, the paper web 1 is in the region of a narrow strip by the brush 17th striped. If a flag 8 in the strip-shaped area of action of the brush 17 arrives, it is caused by friction relative to the paper web 1 in the direction of travel moves, moving the leading part of the flag 8, the area of influence has already happened bulges.

Bei den Ausführungsbeispielen, die in den restlichen Figuren veranschaulicht sind, ist als Mitnehmerorgan ebenfalls eine runde Bürste 17 vorgesehen. Auf der Rückseite der durchlaufenden Papierbahn 1 ist gegenüber der Bürste 17 jeweils ein Stützorgan angeordnet, und zwar gemäß Figur 5 eine Stützrolle 18, gemäß Figur 6 eine Gleitplatte 19 und gemäß Figur 7 eine Rundbürste 20. Die Anordnung eines Stützorgans ist vor allem empfehlenswert, wenn als Mitnehmerorgan eine runde Bürste 17 vorgesehen ist. Durch das Stützorgan wird eine ausreichende Normalkraft gewährleistet, welche Voraussetzung für eine ausreichende Reibungskraft ist. Bei dem Ausführungsbeispiel gemäß Figur 7 wird der Separierungseffekt durch die abstoßende Wirkung elektrischer Ladungen verstärkt, die sich durch die Berührung mit den Bürsten 17, 20 sowohl auf der Fahne 8 als auch auf der Papierbahn 1 ansammeln.In the exemplary embodiments which are illustrated in the remaining figures, a round brush 17 is also provided as a driving element. On the The back of the continuous paper web 1 is in each case opposite the brush 17 Support member arranged, namely according to Figure 5, a support roller 18, according to Figure 6 a sliding plate 19 and, according to FIG. 7, a round brush 20. The arrangement of a Support organ is particularly recommended if a round as a driving element Brush 17 is provided. A sufficient normal force is created by the support member ensures what is required for sufficient friction. at the exemplary embodiment according to FIG. 7, the separation effect is achieved by the repulsive effect of electric charges amplified by touch with the brushes 17, 20 both on the flag 8 and on the paper web 1 accumulate.

Claims (10)

  1. A method of shortening a flap (8) hanging off a continuously moving paper strip (1), in particular the flap (8) left after an on-the-fly roll change downstream of a glue location at the glued paper strip (1),
    the paper strip (1) being conducted past a separating device rotating within an envelope and moving faster on the envelope than the paper strip (1), and the flap (8) being frictionally engaged by the separating device and separated from the paper strip (1) and severed near the glued location,
    characterized in that during an on-the-fly supply-roll change the paper strip (1) is engaged by the envelope (16) of the separating device and that the flap (8) is engaged by the separating device while it is still lying against the paper strip (1).
  2. An apparatus for shortening a flap (8) hanging off a continuously moving paper strip (1), in particular the flap (8) left after an on-the-fly roll change downstream of a glue location at the glued paper strip (1),
    with guides for conducting the paper strip (1) along a predetermined path,
    with a rotating separating device that is inside an envelope (16), that is driven faster on the envelope (16) than the paper strip (1), and that is able to exert a frictional force effective inside the envelope (16) in the travel direction (4) of the paper strip (1),
    and with a blade (6) which is disposed at a small distance to the separating device,
    characterized in that during the on-the-fly supply-roll change the envelope (16) engages the paper strip (1).
  3. The apparatus according to claim 2, characterized by a suction drum (5) as separating device.
  4. The apparatus according to claim 2, characterized by a suction belt (11) as separating device.
  5. The apparatus according to claim 2, characterized in that a rotor (12) serves as separating device and is essentially comprised of a shaft (13) and at least one rod (14) that is parallel to the shaft (13) and that is fixed at a radial distance by arms (15) fixedly on the shaft (13).
  6. The apparatus according to claim 2, characterized by a round brush (17) as separating device.
  7. The apparatus according to one of claims 2 to 6, in particular claim 6, characterized by a support (18, 19,20) for the paper strip (1) and adjacent the separating device (5, 11, 12, 17).
  8. The apparatus according to claim 7, characterized by a rotatably mounted roll (18) as separating device.
  9. The apparatus according to claim 7, characterized by a fixed plate (19) as separating device.
  10. The apparatus according to claim 7, characterized by a rotatable round brush (20) as separating device.
EP01958007A 2000-08-25 2001-07-24 Method and device for shortening the flap of paper following a roll change Expired - Lifetime EP1313659B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10041969 2000-08-25
DE10041969A DE10041969B4 (en) 2000-08-25 2000-08-25 Method and device for shortening the flag following a roll change
PCT/EP2001/008530 WO2002016241A2 (en) 2000-08-25 2001-07-24 Method and device for shortening the flap of paper following a roll change

Publications (2)

Publication Number Publication Date
EP1313659A2 EP1313659A2 (en) 2003-05-28
EP1313659B1 true EP1313659B1 (en) 2004-04-21

Family

ID=7653877

Family Applications (1)

Application Number Title Priority Date Filing Date
EP01958007A Expired - Lifetime EP1313659B1 (en) 2000-08-25 2001-07-24 Method and device for shortening the flap of paper following a roll change

Country Status (7)

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US (1) US6938529B2 (en)
EP (1) EP1313659B1 (en)
JP (1) JP2004506578A (en)
AT (1) ATE264800T1 (en)
CA (1) CA2419969A1 (en)
DE (2) DE10041969B4 (en)
WO (1) WO2002016241A2 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DK3281878T3 (en) * 2016-08-10 2018-11-12 Maschf Moellers Gmbh Device for wrapping a goods stack with a pipe cover and method for replacing the pipe foil bearing in a corresponding device
DE102016225980B4 (en) 2016-12-22 2019-09-12 Koenig & Bauer Ag Device for cutting a material web lug hanging from a web of material to be guided through the device and web-fed printing press

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DE307145C (en) *
GB1546561A (en) * 1975-06-04 1979-05-23 Agfa Gevaert Tbuttsplicer
DE2732644C2 (en) * 1977-07-19 1982-07-01 Siemens AG, 1000 Berlin und 8000 München Standard arrangement for a roller carrier
IT1166077B (en) * 1979-04-03 1987-04-29 Carle E Montanari Spa JOINING DEVICE PARTICULARLY SUITABLE FOR ENSURING CONTINUITY OF WRAPPING MATERIAL TO PACKAGING MACHINES
US5064488A (en) * 1990-03-27 1991-11-12 Trine Manufacturing Company, Inc. Apparatus and method for splicing film
IT1238312B (en) * 1990-04-04 1993-07-12 Gd Spa METHOD FOR REPLACING TAPE MATERIAL IN AN OPERATING MACHINE.
US5356496A (en) * 1992-06-15 1994-10-18 The Black Clawson Company Splice tail tape-down method and apparatus
IT227176Y1 (en) * 1992-11-11 1997-09-15 Ocme Srl DEVICE FOR THE JOINT OF THERMO-EXTRACTABLE PLASTIC FILM IN A MACHINE USING THIS FILM
DE4336298A1 (en) * 1993-10-25 1995-04-27 Bachofen & Meier Maschf Unwinding apparatus with a splice device
EP0662437B1 (en) * 1993-12-16 1995-07-19 Fabriques De Tabac Reunies S.A. Device for connecting tapes of flexible material
US5827166A (en) * 1993-12-16 1998-10-27 Philip Morris Incorporated Device for joining strips of a flexible material
DE4401963C2 (en) * 1994-01-25 1998-09-03 Voith Gmbh J M Device for establishing a rail connection
JP3690830B2 (en) * 1995-02-14 2005-08-31 株式会社東京自働機械製作所 Opening tape changer
DE19804415C1 (en) * 1998-02-05 1999-08-26 Vits Maschinenbau Gmbh Method and device for shortening the flag after a flying roll change
FI106447B (en) * 1999-06-24 2001-02-15 Valmet Corp Wheelchair procedure and device
DE19931797C1 (en) * 1999-07-08 2000-12-07 Vits Maschinenbau Gmbh Paper flap trimming method for flying reel changing in continuous paper processing machine uses air jet for blowing trailing flap against edge of trimming blade

Also Published As

Publication number Publication date
WO2002016241A3 (en) 2002-07-18
ATE264800T1 (en) 2004-05-15
CA2419969A1 (en) 2003-02-18
DE50102067D1 (en) 2004-05-27
WO2002016241A2 (en) 2002-02-28
DE10041969A1 (en) 2002-03-07
US20030164076A1 (en) 2003-09-04
EP1313659A2 (en) 2003-05-28
DE10041969B4 (en) 2012-03-29
JP2004506578A (en) 2004-03-04
US6938529B2 (en) 2005-09-06

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