EP1062175A1 - Longitudinal cutting device for a winding machine - Google Patents

Longitudinal cutting device for a winding machine

Info

Publication number
EP1062175A1
EP1062175A1 EP99904878A EP99904878A EP1062175A1 EP 1062175 A1 EP1062175 A1 EP 1062175A1 EP 99904878 A EP99904878 A EP 99904878A EP 99904878 A EP99904878 A EP 99904878A EP 1062175 A1 EP1062175 A1 EP 1062175A1
Authority
EP
European Patent Office
Prior art keywords
knives
knife
cutting device
longitudinal cutting
blades
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
EP99904878A
Other languages
German (de)
French (fr)
Other versions
EP1062175B1 (en
Inventor
Armin Hutzenlaub
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.)
Kampf GmbH and Co Maschinenfabrik
Original Assignee
Kampf GmbH and Co Maschinenfabrik
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 Kampf GmbH and Co Maschinenfabrik filed Critical Kampf GmbH and Co Maschinenfabrik
Publication of EP1062175A1 publication Critical patent/EP1062175A1/en
Application granted granted Critical
Publication of EP1062175B1 publication Critical patent/EP1062175B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

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
    • B26D1/14—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 circular cutting member, e.g. disc cutter
    • B26D1/24—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 circular cutting member, e.g. disc cutter coacting with another disc cutter
    • B26D1/245—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 circular cutting member, e.g. disc cutter coacting with another disc cutter 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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/20—Cutting beds
    • 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
    • B26D7/26—Means for mounting or adjusting the cutting member; Means for adjusting the stroke of the cutting member
    • B26D7/2614—Means for mounting the cutting member
    • B26D7/2621—Means for mounting the cutting member for circular cutters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/02—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with longitudinal slitters or perforators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/20—Cutting beds
    • B26D2007/202—Rollers or cylinders being pivoted during operation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
    • B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
    • B31B50/14—Cutting, e.g. perforating, punching, slitting or trimming
    • B31B50/16—Cutting webs
    • B31B50/18—Cutting webs longitudinally
    • 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
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • Y10T83/7809—Tool pair comprises rotatable tools
    • Y10T83/7813—Tool pair elements angularly related
    • 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
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • Y10T83/7809—Tool pair comprises rotatable tools
    • Y10T83/783—Tool pair comprises contacting overlapped discs
    • 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
    • Y10T83/9457—Joint or connection
    • Y10T83/9464—For rotary tool

Definitions

  • the invention relates to a longitudinal cutting device for a winding machine for winding running webs of goods, in particular plastic webs, with a number of upper knives which are designed as disk-shaped circular knives and a number of lower knives which are designed as circular knives.
  • Winding machines referred to as roll cutting machines are known to contain a slitting device, from which the material web is slit by slitting
  • each winding roll has the necessary axial distance from its neighboring roll
  • the winding rolls are known to be wound on two winding axes arranged axially parallel and at a distance from one another.
  • the individual webs are alternately fed to one of the two winding axes, so that two adjacent winding rolls are wound up offset from one another. This is constructively relatively complex, since the winding machine must have two winding axes.
  • the invention is therefore based on the object of providing a longitudinal cutting device for a winding machine, with which narrow strips of less than 5 mm can be safely cut out and removed from the web.
  • Figure 1 shows a section of a longitudinal cutting device according to the invention. Ways of Carrying Out the Invention
  • the longitudinal cutting device has a series of upper knives 1, which are designed as disk-shaped circular knives.
  • the upper knives 1 are mounted in a known manner on a common axis so that they can be positioned so that they can be positioned in the desired cutting positions. All upper knives 1 are each connected to a rotary drive, for example the common axis is driven.
  • the upper knives 1 are rectangular in cross-section, so that they have two parallel side faces, against which the cutting edge of a lower knife 2 can be placed. Each side of an upper knife 1 thus forms a pair of knives with a lower knife 2, which cuts through the plastic web in the longitudinal direction. Due to the two longitudinal cuts on each upper knife 1, a narrow strip is cut out of the web in a width which corresponds to the width of the upper knife 1.
  • the width of an upper knife 1 is less than 5 mm, preferably 1 mm to 2 mm, in order to keep the loss of web material by cutting out the strip as small as possible with sufficient stability of the upper knife 1.
  • All lower knives 2 are freely rotatably mounted on a support shaft 3 which is fixed during operation. During operation, they are pressed resiliently against one side of the associated upper knife 1 and thus also driven by it.
  • two upper knives 2 are assigned to each upper knife 1.
  • the lower knives 2 are also circular knives, which are designed and mounted on the support shaft 3 so that their plane of rotation 4 extends at an acute angle to the plane of rotation 5 of the upper knife 1.
  • the rotating planes 4 of two lower knives 2 assigned to an upper knife 1 are each inclined in mirror image to one another so that their cutting edges move towards and away from one another during one revolution.
  • both cutting edges contact one side of the upper knife 1.
  • the two cutting edges have the exact opposite of the upper knife 1 - 4 -
  • Lower knife 2 the maximum distance from each other, as shown in Figure 1 in each case in the lower position. At the maximum distance between the cutting edges, there is a sufficiently large gap 6 between two associated lower knives 2, which makes it possible to remove the cut-out strip in this area. This is preferably carried out by means of a suction device which sucks the cut-out strip from the area between the two lower knives 2.
  • pot knives are used as the bottom knife, which have the shape of a truncated cone, the peripheral edge of the truncated cone forming the cutting edge.
  • Each lower knife 2 is fastened in a freely rotatable manner on a carrier bushing 8 via a ball bearing 7.
  • each connecting bush 10 has the shape of a cylindrical surface which is inclined against the central axis 9 of the support axis 3.
  • the inner circumferential surface of each carrier bushing 8 runs parallel to the circumferential surface of the support shaft 3.
  • the two support bushings 8 of each pair of lower knives sit firmly on a connecting bushing 10 which is arranged displaceably on the support shaft 8.
  • the circumferential position of each connecting bush 10 with the two carrier bushings 8 fastened thereon is fixed against rotation by means of two lateral locking pins 1 1, which extend through the two bushes 8, 10 and engage in an axial groove of the support shaft 3.
  • each connecting bushing 10 With the parts attached to it, automatically positions itself in the cutting position via the lower knives 2, which align with the fixed upper knife 1 when it is placed against it.
  • the lower knives 2 are each limited to the ball bearings 7 parallel to the central axis
  • each lower knife 2 is movably mounted. Between the ball bearing 7 and the front shoulder of each lower knife 2, a compression spring 1 2 is arranged, by which the cutting edge is pressed against the upper knife 1. The cutting edges of each lower knife 2 are thus resiliently supported on the respective upper knife 1.
  • the outer lateral surfaces of the lower knives 2 are designed so that in the cutting position they form a support parallel to the web, by which the web is supported over its width during cutting. As shown in Figure 1 above, the outer surface lines of the lower knife 2 form a straight line at the point of contact on the upper knife 1, which runs parallel to the axis of rotation of the upper knife 1 and thus at right angles to the side surfaces.
  • the support shaft 3 is rotated about 180 ° about its central axis 9.
  • the circumferential area of the carrier bushes 8 is moved into the area of the upper knife 1, in which two associated lower knives 2 are at a maximum distance from one another.
  • the upper knife 1 can then be moved from above into the gap 6 between the two lower knives 2.
  • Support axis 3 rotated back into the cutting position shown in Figure 1 and locked in this position. When turning back, the cutting edges of the lower knives 2 automatically contact the upper knives 1.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Nonmetal Cutting Devices (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

Known winding machines for winding up continuous strips of material, especially plastic strips, use longitudinal cutting devices comprising a series of upper blades (1) embodied as disk-shaped circular blades, and a series of lower blades (2) embodied as circular blades. According to the invention one lower blade (2) each is arranged on both sides of an upper blade (1), the lower blades (2) are mounted in a freely rotating manner on a carrying axle (3) and the planes of rotation (4) of the two lower blades (2) assigned to an upper blade (1) are symmetrically inclined in relation to each other and form an acute angle with said plane of rotation (5) of the upper blade (1) in such a way that the cutting edges of the two lower blades (2) move towards and away from each other during one revolution. The longitudinal cutting device provided for in the invention makes it possible to cut narrow ribbons from the strip and to convey them such that the rolls can be wound on a shared winding axle with the required distance between them.

Description

- 1 - - 1 -
B E S C H R E I B U N GDESCRIPTION
Längsschneidevorrichtung für eine WickelmaschineLongitudinal cutting device for a winding machine
Technisches GebietTechnical field
Die Erfindung betrifft eine Längsschneidevorrichtung für eine Wickelmaschine zum Aufwickeln laufender Warenbahnen, insbesondere Kunststoffbahnen, mit einer Reihe von Obermessern, die als scheibenförmige Kreismesser ausgebildet sind^nd mit einer Reihe von Untermessern, die als Kreismesser ausgebildet sind.The invention relates to a longitudinal cutting device for a winding machine for winding running webs of goods, in particular plastic webs, with a number of upper knives which are designed as disk-shaped circular knives and a number of lower knives which are designed as circular knives.
Stand der TechnikState of the art
Als Rollenschneidmaschinen bezeichnete Wickelmaschinen enthalten bekannterweise eine Längsschneidevorrichtung, von der die Warenbahn durch Längsschneiden inWinding machines referred to as roll cutting machines are known to contain a slitting device, from which the material web is slit by slitting
Einzelbahnen aufgeteilt wird, die anschließend zu Wickelrollen aufgewickelt werden. Beim Aufwickeln von Kunststoffbahnen ist es erforderlich, daß zwei benachbarte Wickelrollen einen gewissen Abstand voneinander haben, damit sie sich nicht bei einem Verlaufen der Bahnen miteinander verhaken. Eine Berührung zweier benachbar- ter Wickelrollen an ihren Stirnseiten muß auch vermieden werden, damit beiIndividual webs are divided, which are then wound into winding rolls. When winding plastic webs, it is necessary that two adjacent winding rolls have a certain distance from one another so that they do not get caught when the webs run. Touching two adjacent winding rolls on their end faces must also be avoided so that
Querprofilschwankungen keine Reibung zwischen zwei Wickelrollen auftritt, wenn diese unterschiedlich radial zunehmen.Cross-section fluctuations No friction occurs between two winding rolls if they increase radially differently.
Damit jede Wickelrolle zu ihrer Nachbarrolle den notwendigen axialen Abstand aufweist, werden die Wickelrollen bekannterweise auf zwei achsparallel mit Abstand voneinander angeordnete Wickelachsen aufgewickelt. Die Einzelbahnen werden wechselweise jeweils einer der beiden Wickelachsen zugeführt, so daß jeweils zwei benachbarte Wickelrollen versetzt zueinander aufgewickelt werden. Dies ist konstruktiv relativ aufwendig, da die Wickelmaschine zwei Wickelachsen aufweisen muß.So that each winding roll has the necessary axial distance from its neighboring roll, the winding rolls are known to be wound on two winding axes arranged axially parallel and at a distance from one another. The individual webs are alternately fed to one of the two winding axes, so that two adjacent winding rolls are wound up offset from one another. This is constructively relatively complex, since the winding machine must have two winding axes.
Um alle Wickelrollen auf einer gemeinsamen Wickelachse mit dem erforderlichen Abstand voneinander aufwickeln zu können, wurde vorgeschlagen, beim Längsschneiden einen schmalen Streifen aus der Bahn herauszutrennen, und so zwei benachbarte Wickelrollen auf dem erforderlichen axialen Abstand voneinander zu halten. Dieser an sich vorteilhafte, da die Konstruktion der Wickelmaschine vereinfa- chende Weg konnte sich nicht durchsetzen, da es bisher nicht gelang, die zwischen zwei Bahnen als Abfall herauszuschneidenden Streifen so schmal zu halten, daß der Abfall wirtschaftlich akzeptabel ist. Darüber hinaus treten technische Probleme auf, einen extrem schmalen Streifen beim Schneiden zuverlässig aus der Längsschneidevorrichtung herauszuführen.In order to be able to wind all the winding rolls on a common winding axis with the required distance from one another, it was proposed to cut a narrow strip out of the path during the longitudinal cutting, and thus to keep two adjacent winding rolls at the required axial distance from one another. This route, which was advantageous in itself because the construction of the winding machine was simplified, could not prevail, since it has not hitherto been possible to keep the strips to be cut out between two webs as waste so narrow that the waste is economically acceptable. In addition, there are technical problems with reliably leading an extremely narrow strip out of the slitter during cutting.
Darstellung der ErfindungPresentation of the invention
Der Erfindung liegt daher die Aufgabe zugrunde, eine Längsschneidevorrichtung für eine Wickelmaschine bereitzustellen, mit der sich aus der Bahn schmale Streifen von weniger als 5 mm sicher herausschneiden und abführen lassen.The invention is therefore based on the object of providing a longitudinal cutting device for a winding machine, with which narrow strips of less than 5 mm can be safely cut out and removed from the web.
Diese Aufgabe wird mit den Merkmalen des Patentanspruchs 1 gelöst.This object is achieved with the features of patent claim 1.
Die Unteransprüche enthalten bevorzugte, da besonders vorteilhafte Ausgestaltungen einer erfindungsgemäßen Längsschneidevorrichtung.The subclaims contain preferred, since particularly advantageous, configurations of a longitudinal cutting device according to the invention.
Kurze Beschreibung der ZeichnungBrief description of the drawing
Die Zeichnung dient zur Erläuterung der Erfindung anhand eines vereinfacht dargestell- ten Ausführungsbeispiels.The drawing serves to explain the invention on the basis of a simplified exemplary embodiment.
Figur 1 zeigt einen Ausschnitt einer Längsschneidevorrichtung nach der Erfindung. Wege zur Ausführung der ErfindungFigure 1 shows a section of a longitudinal cutting device according to the invention. Ways of Carrying Out the Invention
Die Längsschneideeinrichtung weist eine Reihe von Obermessern 1 auf, die als scheibenförmige Kreismesser gestaltet sind. Die Obermesser 1 sind auf bekannte Weise an einer gemeinsamen Achse querverstellbar gelagert, so daß sie in den gewünschten Schnittpositionen positioniert werden können. Alle Obermesser 1 sind jeweils mit einem Drehantrieb verbunden, beispielsweise wird die gemeinsame Achse angetrieben.The longitudinal cutting device has a series of upper knives 1, which are designed as disk-shaped circular knives. The upper knives 1 are mounted in a known manner on a common axis so that they can be positioned so that they can be positioned in the desired cutting positions. All upper knives 1 are each connected to a rotary drive, for example the common axis is driven.
Die Obermesser 1 sind im Querschnitt rechteckig ausgeführt, so daß sie zwei parallele Seitenflächen aufweisen, gegen die jeweils die Schneidkante eines Untermessers 2 angestellt werden kann. Jede Seite eines Obermessers 1 bildet so mit einem Untermesser 2 ein Messerpaar, das die Kunststoffbahn in Längsrichtung durchschnei- det. Durch die zwei Längsschnitte an jedem Obermesser 1 wird jeweils ein schmaler Streifen in einer Breite aus der Bahn herausgeschnitten, die der Breite des Obermessers 1 entspricht. Die Breite eines Obermessers 1 beträgt weniger als 5 mm, bevorzugt 1 mm bis 2 mm, um den Verlust an Bahnmaterial durch Herausschneiden des Streifens bei ausreichender Stabilität des Obermessers 1 möglichst gering zu halten.The upper knives 1 are rectangular in cross-section, so that they have two parallel side faces, against which the cutting edge of a lower knife 2 can be placed. Each side of an upper knife 1 thus forms a pair of knives with a lower knife 2, which cuts through the plastic web in the longitudinal direction. Due to the two longitudinal cuts on each upper knife 1, a narrow strip is cut out of the web in a width which corresponds to the width of the upper knife 1. The width of an upper knife 1 is less than 5 mm, preferably 1 mm to 2 mm, in order to keep the loss of web material by cutting out the strip as small as possible with sufficient stability of the upper knife 1.
Alle Untermesser 2 sind auf einer im Betrieb feststehenden Tragachse 3 frei drehbar gelagert. Sie werden im Betrieb jeweils federnd gegen eine Seite des zugehörigen Obermessers 1 gedrückt und so von diesem mit angetrieben.All lower knives 2 are freely rotatably mounted on a support shaft 3 which is fixed during operation. During operation, they are pressed resiliently against one side of the associated upper knife 1 and thus also driven by it.
Wie in Figur 1 dargestellt, sind jedem Obermesser 1 zwei Untermesser 2 zugeordnet. Die Untermesser 2 sind ebenfalls Kreismesser, die so gestaltet und auf der Tragachse 3 gelagert sind, daß ihre Drehebene 4 spitzwinklig zur Drehebene 5 der Obermesser 1 verläuft. Die Drehebenen 4 zweier einem Obermesser 1 zugeordneter Untermesser 2 sind dabei jeweils spiegelbildlich zueinander geneigt, damit sich ihre Schneidkanten bei einem Umlauf aufeinander zu und voneinander weg bewegen. Bei dem in Figur 1 oben dargestellten geringsten Abstand der Schneidkanten zweier Untermesser 2 voneinander kontaktieren beide Schneidkanten jeweils eine Seite des Obermessers 1 . Genau entgegengesetzt zum Obermesser 1 haben die beiden Schneidkanten der - 4 -As shown in FIG. 1, two upper knives 2 are assigned to each upper knife 1. The lower knives 2 are also circular knives, which are designed and mounted on the support shaft 3 so that their plane of rotation 4 extends at an acute angle to the plane of rotation 5 of the upper knife 1. The rotating planes 4 of two lower knives 2 assigned to an upper knife 1 are each inclined in mirror image to one another so that their cutting edges move towards and away from one another during one revolution. At the smallest distance between the cutting edges of two lower knives 2 shown in FIG. 1 above, both cutting edges contact one side of the upper knife 1. The two cutting edges have the exact opposite of the upper knife 1 - 4 -
Untermesser 2 den maximalen Abstand voneinander, wie in Figur 1 jeweils in der unteren Position dargestellt ist. Bei maximalem Abstand der Schneidkanten ist ein ausreichend großer Spalt 6 zwischen zwei zugehörigen Untermessern 2 vorhanden, der es ermöglicht, in diesem Bereich den herausgeschnittenen Streifen abzuführen. Bevorzugt erfolgt dies mittels einer Absaugeinrichtung, die den herausgeschnittenen Streifen aus dem Bereich zwischen den beiden Untermessern 2 absaugt.Lower knife 2 the maximum distance from each other, as shown in Figure 1 in each case in the lower position. At the maximum distance between the cutting edges, there is a sufficiently large gap 6 between two associated lower knives 2, which makes it possible to remove the cut-out strip in this area. This is preferably carried out by means of a suction device which sucks the cut-out strip from the area between the two lower knives 2.
Bevorzugt werden als Untermesser 2 sogenannte Topfmesser verwendet, die die Form eines Kegelstumpfs aufweisen, wobei die Umlauf kante des Kegelstumpfes die Schneidkante bildet. Jedes Untermesser 2 ist über ein Kugellager 7 auf einer Trägerbuchse 8 frei rotierbar befestigt. Die äußeren Mantelflächen der TrägerbuchsenPreferably, so-called pot knives are used as the bottom knife, which have the shape of a truncated cone, the peripheral edge of the truncated cone forming the cutting edge. Each lower knife 2 is fastened in a freely rotatable manner on a carrier bushing 8 via a ball bearing 7. The outer lateral surfaces of the carrier bushes
8 haben die Form einer Zylinderfläche, die gegen die Mittelachse 9 der Tragachse 3 geneigt ist. So dreht der äußere Laufring jedes Kugellagers 7 mit dem daran befestigten Untermesser 2 um eine Achse, die gegenüber der Mittelachse 9 der Tragachse 3 in einem spitzen Winkel geneigt ist. Die innere Mantelfläche jeder Trägerbuchse 8 verläuft parallel zur Mantelfläche der Tragachse 3. Die beiden Trägerbuchsen 8 jedes Untermesserpaares sitzen fest auf einer Verbindungsbuchse 10, die auf der Tragachse 8 verschiebbar angeordnet ist. Die umfängliche Position jeder Verbindungsbuchse 10 mit den darauf befestigten beiden Trägerbuchsen 8 wird mittels zweier seitlicher Arretierstifte 1 1 verdrehsicher festgelegt, die sich durch die beiden Buchsen 8, 10 erstrecken und in eine Axialnut der Tragachse 3 eingreifen. In axialer Richtung positioniert sich jede Verbindungsbuchse 10 mit den auf ihr befestigten Teilen selbsttätig in der Schneidposition über die Untermesser 2, die sich beim Anlegen an das ortsfeste Obermesser 1 an diesem ausrichten.8 have the shape of a cylindrical surface which is inclined against the central axis 9 of the support axis 3. Thus, the outer race of each ball bearing 7 with the attached lower knife 2 rotates about an axis which is inclined at an acute angle with respect to the central axis 9 of the support axis 3. The inner circumferential surface of each carrier bushing 8 runs parallel to the circumferential surface of the support shaft 3. The two support bushings 8 of each pair of lower knives sit firmly on a connecting bushing 10 which is arranged displaceably on the support shaft 8. The circumferential position of each connecting bush 10 with the two carrier bushings 8 fastened thereon is fixed against rotation by means of two lateral locking pins 1 1, which extend through the two bushes 8, 10 and engage in an axial groove of the support shaft 3. In the axial direction, each connecting bushing 10, with the parts attached to it, automatically positions itself in the cutting position via the lower knives 2, which align with the fixed upper knife 1 when it is placed against it.
Die Untermesser 2 sind jeweils an den Kugellagern 7 begrenzt parallel zur MittelachseThe lower knives 2 are each limited to the ball bearings 7 parallel to the central axis
9 beweglich gelagert. Zwischen dem Kugellager 7 und der vorderen Schulter jedes Untermessers 2 ist eine Druckfeder 1 2 angeordnet, von der die Schneidkante jeweils gegen das Obermesser 1 gedrückt wird. Die Schneidkanten jedes Untermessers 2 liegen somit federnd abgestützt an dem jeweiligen Obermesser 1 an. Die äußeren Mantelflächen der Untermesser 2 sind so gestaltet, daß sie in der Schneidposition eine zur Bahn parallele Auflage bilden, von der die Bahn über ihre Breite beim Schneiden abgestützt wird. Wie in Figur 1 oben dargestellt, bilden die äußeren Mantellinien der Untermesser 2 an der Berührungsstelle am Obermesser 1 eine gerade Linie, die parallel zur Drehachse der Obermesser 1 und somit im rechten Winkel zu deren Seitenflächen verläuft.9 movably mounted. Between the ball bearing 7 and the front shoulder of each lower knife 2, a compression spring 1 2 is arranged, by which the cutting edge is pressed against the upper knife 1. The cutting edges of each lower knife 2 are thus resiliently supported on the respective upper knife 1. The outer lateral surfaces of the lower knives 2 are designed so that in the cutting position they form a support parallel to the web, by which the web is supported over its width during cutting. As shown in Figure 1 above, the outer surface lines of the lower knife 2 form a straight line at the point of contact on the upper knife 1, which runs parallel to the axis of rotation of the upper knife 1 and thus at right angles to the side surfaces.
Damit vor Beginn des Schneidens die Obermesser 1 in ihre Schneidposition zwischen den beiden zugehörigen Untermessern 2 gebracht werden können, ist die Tragachse 3 um ca. 1 80° um ihre Mittelachse 9 verdrehbar gelagert. Durch eine Drehung der Tragachse 3 um ca. 1 80° wird der Umfangsbereich der Trägerbuchsen 8 in den Bereich der Obermesser 1 bewegt, bei dem zwei zugehörige Untermesser 2 maximalen Abstand voneinander haben. Das Obermesser 1 kann anschließend von oben in den Spalt 6 zwischen den beiden Untermessern 2 bewegt werden. Danach wird dieSo that the upper knives 1 can be brought into their cutting position between the two associated lower knives 2 before the start of the cutting, the support shaft 3 is rotated about 180 ° about its central axis 9. By rotating the support axis 3 by approximately 180 °, the circumferential area of the carrier bushes 8 is moved into the area of the upper knife 1, in which two associated lower knives 2 are at a maximum distance from one another. The upper knife 1 can then be moved from above into the gap 6 between the two lower knives 2. After that the
Tragachse 3 wieder in die in Figur 1 dargestellte Schneidposition zurückgedreht und in dieser Position arretiert. Beim Zurückdrehen legen sich die Schneidkanten der Untermesser 2 selbsttätig an die Obermesser 1 an. Support axis 3 rotated back into the cutting position shown in Figure 1 and locked in this position. When turning back, the cutting edges of the lower knives 2 automatically contact the upper knives 1.

Claims

PATENTANSPRÜCHE PATENT CLAIMS
1 . Längsschneidevorrichtung für eine Wickelmaschine mit einer Reihe von als scheibenförmige Kreismesser ausgebildeten Obermessern (1 ) und einer Reihe von als Kreismesser ausgebildeten Untermessern (2), dadurch gekennzeichnet, daß1 . Longitudinal cutting device for a winding machine with a series of upper knives (1) designed as a disc-shaped circular knife and a series of lower knives (2) designed as a circular knife, characterized in that
- an jeder Seite eines Obermessers (1 ) jeweils ein Untermesser (2) angeordnet ist, wobei - die Untermesser (2) frei drehbar auf einer Tragachse (3) gelagert sind, und- On each side of an upper knife (1) a lower knife (2) is arranged, wherein - the lower knife (2) are freely rotatable on a support shaft (3), and
- die Drehebenen (4) der beiden einem Obermesser (1 ) zugeordneten Untermesser (2) spitzwinklig zur Drehebene (5) des Obermessers (1 ) spiegelbildlich zueinander geneigt so verlaufen, daß sich die Schneidkanten der beiden Untermesser (2) bei einem Umlauf aufeinander zu und voneinander weg bewegen.- The planes of rotation (4) of the two upper knives (1) associated with the lower knife (2) at an acute angle to the rotating plane (5) of the upper knife (1) are mirror-inverted to one another so that the cutting edges of the two lower knives (2) converge towards one another and move away from each other.
2.Second
Längsschneidevorrichtung nach Anspruch 1 , dadurch gekennzeichnet, daß die Untermesser (2) so gestaltet sind, daß ihre äußeren Mantellinien an der Berührungs¬ stelle am Obermesser (1 ) eine gerade Linie bilden, die im rechten Winkel zu den Seitenflächen des Obermessers (1 ) verläuft.Longitudinal cutting device according to claim 1, characterized in that the lower blade (2) are designed so that their outer surface lines at the contacted ¬ point form a straight line on the upper blade (1) extending at right angles to the side surfaces of the upper blade (1) .
3.Third
Längsschneideeinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die beiden einem Obermesser (1 ) zugeordneten Untermesser (2) jeweils federnd gegen eine Seite des Obermessers (1 ) gedrückt werden. - 7 -Longitudinal cutting device according to claim 1 or 2, characterized in that the two lower knives (2) assigned to an upper knife (1) are each pressed resiliently against one side of the upper knife (1). - 7 -
4.4th
Längsschneidevorrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Untermesser (2) die Form eines Kegelstumpfs aufweisen, wobei die Umlaufkante des Kegelstumpfes die Schneidkante bildet. Longitudinal cutting device according to one of claims 1 to 3, characterized in that the lower cutters (2) have the shape of a truncated cone, the peripheral edge of the truncated cone forming the cutting edge.
5.5th
Längsschneidevorrichtung nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Obermesser ( 1 ) angetrieben sind.Longitudinal cutting device according to one of claims 1 to 4, characterized in that the upper knives (1) are driven.
6.6th
Längsschneidevorrichtung nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, daß die im Betrieb feststehende Tragachse (3) der Untermesser (2) in eine Position drehbar ist, in der sich der maximale Spalt zwischen zwei Untermessern (2) im Bereich der Obermesser (1 ) befindet.Longitudinal cutting device according to one of claims 1 to 5, characterized in that the supporting axis (3) of the lower knives (2) which is fixed during operation can be rotated into a position in which the maximum gap between two lower knives (2) in the area of the upper knives (1 ) is located.
7.7th
Längsschneidevorrichtung nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, daß eine Absaugeinrichtung den herausgeschnittenen Streifen aus dem Bereich zwischen zwei Untermessern (2) absaugt. Longitudinal cutting device according to one of claims 1 to 6, characterized in that a suction device sucks the cut-out strip from the area between two lower knives (2).
EP99904878A 1998-03-07 1999-02-12 Longitudinal cutting device for a winding machine Expired - Lifetime EP1062175B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19809954A DE19809954A1 (en) 1998-03-07 1998-03-07 Longitudinal cutting device for a winding machine
DE19809954 1998-03-07
PCT/EP1999/000928 WO1999044932A1 (en) 1998-03-07 1999-02-12 Longitudinal cutting device for a winding machine

Publications (2)

Publication Number Publication Date
EP1062175A1 true EP1062175A1 (en) 2000-12-27
EP1062175B1 EP1062175B1 (en) 2002-06-19

Family

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Application Number Title Priority Date Filing Date
EP99904878A Expired - Lifetime EP1062175B1 (en) 1998-03-07 1999-02-12 Longitudinal cutting device for a winding machine

Country Status (5)

Country Link
US (1) US6631663B1 (en)
EP (1) EP1062175B1 (en)
DE (2) DE19809954A1 (en)
ES (1) ES2180275T3 (en)
WO (1) WO1999044932A1 (en)

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Also Published As

Publication number Publication date
DE19809954A1 (en) 1999-09-09
ES2180275T3 (en) 2003-02-01
DE59901798D1 (en) 2002-07-25
WO1999044932A1 (en) 1999-09-10
EP1062175B1 (en) 2002-06-19
US6631663B1 (en) 2003-10-14

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