EP1541298B1 - Apparatus for separating a web - Google Patents

Apparatus for separating a web Download PDF

Info

Publication number
EP1541298B1
EP1541298B1 EP04106486A EP04106486A EP1541298B1 EP 1541298 B1 EP1541298 B1 EP 1541298B1 EP 04106486 A EP04106486 A EP 04106486A EP 04106486 A EP04106486 A EP 04106486A EP 1541298 B1 EP1541298 B1 EP 1541298B1
Authority
EP
European Patent Office
Prior art keywords
separating element
lever
drive
separating
web
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
EP04106486A
Other languages
German (de)
French (fr)
Other versions
EP1541298A1 (en
Inventor
Peter Rieleit
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voith Patent GmbH
Original Assignee
Voith Patent GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voith Patent GmbH filed Critical Voith Patent GmbH
Publication of EP1541298A1 publication Critical patent/EP1541298A1/en
Application granted granted Critical
Publication of EP1541298B1 publication Critical patent/EP1541298B1/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • 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
    • B26D1/547—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 wire-like cutting member
    • B26D1/5475—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 wire-like cutting member for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D5/00—Arrangements for operating and controlling machines or devices for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D5/08—Means for actuating the cutting member to effect the cut
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • B26D7/08—Means for treating work or cutting member to facilitate cutting
    • 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
    • B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
    • B65H19/26—Cutting-off the web running to the wound web roll
    • 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
    • B65H35/0006—Article or web delivery apparatus incorporating cutting or line-perforating devices
    • B65H35/0073—Details
    • B65H35/008—Arrangements or adaptations of cutting devices
    • B65H35/0086—Arrangements or adaptations of cutting devices using movable cutting elements
    • 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
    • B65H35/04—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 transverse cutters or perforators
    • 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
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5151—Cutting handled material transversally to feeding direction
    • 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
    • B65H2301/50—Auxiliary process performed during handling process
    • B65H2301/51—Modifying a characteristic of handled material
    • B65H2301/515—Cutting handled material
    • B65H2301/5153—Details of cutting means
    • B65H2301/51539—Wire

Definitions

  • the present invention relates to a device for separating a material web with a transverse to the material web movable separating element.
  • a device for separating a material web is used, for example, to separate material webs which are produced in endless length into smaller units of the desired length, in order to then be able to process them further.
  • a separation of a material web is also required to separate damaged parts of the material web from faulty locations of the material web.
  • a device for winding a material web in which a separating device separates the web.
  • the separating device is designed as a separating blade, which is pivotable about a pressure roller.
  • the material web is separated as possible at production speeds, so that the production process is not slowed down or the material does not have to be cached before it is disconnected. In order to realize a separation at high speeds without affecting the manufacturing process, the separation must be done in a very short time.
  • the material web should be separated in a straight line and at right angles to the edge of the web.
  • the invention has for its object to provide a simple means a device for fast separation of running webs.
  • the separating element is tensioned by a tensile force, so that it assumes a rectilinear shape. It can thus be used as parting elements in addition to conventional separation elements, such as knives and rigid blade, also pliable elements.
  • Separators that have no inherent dimensional stability often have a lower mass than rigid dividers. Particularly advantageous is a separator with low mass, as this supports the acceleration to high speeds during the separation process. With low driving forces, a low mass separator can be brought up to high speeds in a very short time, ie it can experience high acceleration. High accelerations are necessary so that the separation process of the material web can be carried out quickly.
  • a separator without its own dimensional stability and low mass for example, a thin, tear-resistant rope. This can be stretched and hung in the device according to the invention, to after Acceleration to separate the web. With a drive, the separating element can be accelerated in the direction of the web and separates it in one step.
  • the drive can, for example, act pneumatically, hydraulically or electrically. Also, a combination of any drive principles is possible.
  • the separator has a coating that supports the separation process. Due to this coating, the separating element gains in strength. It also extends the durability for a permanent use.
  • the coating can also be sharp-edged, so that there is a sawtooth-shaped surface of the separating element, which can advantageously support the separation process.
  • the separating element has at least the width of the material web as a length. Thus, it is possible to separate the web in only one step by the separator acts over the entire width of the web.
  • the separating element is arranged at a variable angle to the running direction of the material web. This has the advantage that the moving material web can be separated at right angles with respect to its longitudinal side.
  • the adjustable angle of the separating element is to be selected as a function of the running speed of the material web and as a function of the time required for cutting in order to obtain a rectangular cutting edge.
  • a translation element between the separating element and the drive is arranged. In this way, the force and acceleration effect of the drive on the transmission element and thus transferred to the separator or even reinforced.
  • the translation element is rotatably mounted.
  • the acceleration element can be moved on a circular sector in the direction of the material web.
  • the attached separating element can be brought by the action of the drive to the web.
  • the translation element is designed as a lever.
  • a lever is a simple means to establish a coupling between the drive and the separating element. With the lever, the force of the drive can be transmitted to the separating element. In this case, an increase in the power by a selectable gear ratio is possible, which is determined by the mounting and driving points. A power boost simultaneously causes an increase in acceleration that is desired at the attachment point of the separator.
  • the length of a first lever path between a bearing point of the lever and an attachment point of the separating element on the lever is greater than the length of a second lever path between the bearing point of the lever and an attachment point of the drive on the lever.
  • the attachment point of the separating element is further away from the bearing of the lever than the attachment point of the drive.
  • the length of a third lever path between the attachment point of the separating element and the attachment point of the drive is greater than the length of the second lever path between the attachment point of the drive and the bearing point of the lever.
  • the greater the distance between the attachment point of the drive and the attachment point of the separating element the less movement must be expended so that the separating element travels a long distance in a short time from its starting position. At the same time, the attachment point of the drive will travel a much shorter distance.
  • the separator experiences a higher acceleration than the acceleration provided by the drive.
  • the lever is designed as a one-armed lever.
  • a one-armed lever is a simple means to forward the power and acceleration effect of the drive to the separator to be accelerated.
  • a low peripheral speed is converted at the attachment point of the drive to a higher peripheral speed at the attachment point of the separating element with respect to the bearing point of the lever.
  • a tensioning device is arranged on the separating element. With the help of this clamping device, the separating element can be brought into its working form.
  • the tensioning device on spring elements which are arranged at the ends of the separating element.
  • Spring elements are simple means that hold the separator in shape while supporting movements of the separator.
  • a damping device is arranged on the translation element opposite side of the separating element. This dampens the acceleration of the separating element after the separation process.
  • the damping device is rotatably mounted. In this way, the device of the movement of the separating element can be tracked from its initial position to its working position and back.
  • the damping device thus effectively supports the termination of the acceleration process of the separating element after the material web has been severed.
  • the separating element is movable transversely to the running direction of the material web with a second drive.
  • the separation of the material web is supported by a cutting or sawing movement of the driven separating element.
  • a separating element 2 which is stretched straight at both ends with clamping devices 3.
  • the separating element 2 has a low mass, which is advantageous for the acceleration process.
  • the separating element 2 is designed as a high-strength rope with a coating that improves the strength of the separating element 2 and at the same time can additionally support the separation, for example in the form of coated sharp-edged grains.
  • the tensioning device 3 consists of two springs which both tension the separating element 2 and act elastically during movements of the separating element 2.
  • a lever 5 is fixed, which is designed here as a one-armed lever.
  • the lever 5 is rotatably mounted on a bearing point 6.
  • an attachment point 8 of a drive 9 Between this bearing point 6 and an attachment point 7, on which the separating element 2 is fastened to the lever 5, there is an attachment point 8 of a drive 9, which ensures the acceleration of the lever 5 and thus of the separating element 2.
  • the length of a first lever path between the bearing point 6 and the attachment point 7 is greater than the length of a second lever path between the bearing point 6 of the lever and the attachment point 8 of the drive 9.
  • the attachment point 8 of the drive 9 is chosen so that the Length of a third lever path between the attachment point 7 of the separating element 2 and the attachment point 8 of the drive 9 is greater than the length of the second lever path between the bearing point 6 of the lever and the attachment point eighth of the drive. In this way the effect of the drive on the separating element is enhanced.
  • the drive 9 acts on the lever 5 so that it moves in the direction of the arrow towards the material web on a circular segment around the bearing point 6.
  • the separating element 2 is moved in the direction of the material web 1 and separates it, starting at an edge 10 of the material web, which is closest to the lever 5. Due to the force of the spring elements 3, the separating element 2 is further kept taut in its working position.
  • a second drive 11 can act, which displaces the separating element 2 in a cutting movement transversely to the material web 1. This drive 11 is attached to an attachment point 12 on the separating element 2.
  • a damping device 13 counteracts the acceleration movement of the separating element 2. Since the separating element 2 moves out of its initial position for separating, it makes sense to rotatably support the damping device on a bearing 14 so that it can follow the movement and is effectively in line with the separating element 2.

Abstract

Device for separating a material sheet (1) comprises a movable separating element (2) with a drive arranged perpendicularly to the material sheet. The separating element is clamped and suspended in a working form by tensile forces. Preferred Features: The separating element has a coating supporting the separating process and a length corresponding to at least the width of the material sheet. The separating element is arranged at an adjustable angle to the running direction of the material sheet.

Description

Die vorliegende Erfindung betrifft eine Vorrichtung zum Trennen einer Materialbahn mit einem zur Materialbahn quer angeordneten bewegbaren Trennelement.The present invention relates to a device for separating a material web with a transverse to the material web movable separating element.

Eine Vorrichtung zum Trennen einer Materialbahn wird beispielsweise eingesetzt, um Materialbahnen, die in endloser Länge hergestellt werden, in kleinere Einheiten gewünschter Länge zu trennen, um sie dann weiterverarbeiten zu können. Bei Produktionsfehlern ist ein Trennen einer Materialbahn ebenfalls erforderlich, um beschädigte Teile der Materialbahn von fehlerhaften Stellen der Materialbahn zu trennen.A device for separating a material web is used, for example, to separate material webs which are produced in endless length into smaller units of the desired length, in order to then be able to process them further. In production errors, a separation of a material web is also required to separate damaged parts of the material web from faulty locations of the material web.

Aus US-A-3055251 ist eine Vorrichtung nach dem Oberbegriff des Anspruchs 1 bekannt.Out US-A-3055251 a device according to the preamble of claim 1 is known.

In DE 3816774 C2 ist eine Vorrichtung zum Aufwickeln einer Material bahn beschrieben, bei der eine Trenneinrichtung die Bahn abtrennt. Die Trennvorrichtung ist als eine Trennschneide ausgebildet, die um eine Andruckwalze schwenkbar ist.In DE 3816774 C2 a device for winding a material web is described, in which a separating device separates the web. The separating device is designed as a separating blade, which is pivotable about a pressure roller.

Aus DE 19529581 C2 ist eine Vorrichtung zum quertrennen einer laufenden Materialbahn bekannt, bei der ein gezahntes Messer unter einem starken Neigungswinkel von maximal 45° in die Bahn eingeschwenkt wird. Dabei kann das Messer sowohl entgegen der Materialbahn als auch in Laufrichtung der Materialbahn eingefahren werden.Out DE 19529581 C2 a device for cross-cutting a moving material web is known in which a toothed knife is pivoted at a strong angle of inclination of a maximum of 45 ° in the web. In this case, the knife can be retracted both against the web and in the direction of the web.

Durch die Erhöhung von Laufgeschwindigkeiten der Materialbahnen auf beispielsweise 2000 m pro Minute werden erhöhte Anforderungen an das Trennen einer Materialbahn gestellt. Die Materialbahn wird möglichst bei Herstellungsgeschwindigkeiten getrennt, damit der Produktionsprozeß nicht verlangsamt wird oder das Material nicht zwischengespeichert werden muß, bevor es getrennt wird. Um bei hohen Geschwindigkeiten ein Trennen ohne Beeinflussung des Herstellungsprozesses realisieren zu können, muß das Trennen in sehr kurzer Zeit geschehen. Dabei soll die Materialbahn geradlinig und möglichst rechtwinklig zur Bahnkante getrennt werden.Increasing the running speeds of the material webs to, for example, 2000 m per minute makes increased demands on the separation of a material web. The material web is separated as possible at production speeds, so that the production process is not slowed down or the material does not have to be cached before it is disconnected. In order to realize a separation at high speeds without affecting the manufacturing process, the separation must be done in a very short time. The material web should be separated in a straight line and at right angles to the edge of the web.

Der Erfindung liegt die Aufgabe zugrunde, mit einfachen Mitteln eine Vorrichtung zum schnellen Trennen von laufenden Materialbahnen zu schaffen.The invention has for its object to provide a simple means a device for fast separation of running webs.

Diese Aufgabe wird durch eine Vorrichtung mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a device having the features of claim 1.

Bei der erfindungsgemäßen Vorrichtung ist das Trennelement durch eine Zugkraft spannbar, so daß es eine geradlinige Form annimmt. Es können somit neben üblichen Trennelementen, wie Messer und formstabile Klin-gen, auch biegeschlaffe Elemente als Trennelemente eingesetzt werden. Trennelemente, die keine eigene Formstabilität aufweisen, haben oftmals eine geringere Masse als formstabile Trennelemente. Besonders vorteilhaft ist ein Trennelement mit geringer Masse, da dies das Beschleunigen auf hohe Geschwindigkeiten beim Trennvorgang unterstützt. Mit geringen Antriebskräften kann ein Trennelement geringer Masse in sehr kurzer Zeit auf hohe Geschwindigkeiten gebracht werden, d.h. es kann eine hohe Beschleunigung erfahren. Hohe Beschleunigungen sind notwendig, damit der Trennvorgang der Materialbahn schnell durchgeführt werden kann. Ein Trennelement ohne eigene Formstabilität und mit geringer Masse ist beispielsweise ein dünnes, reißfestes Seil. Dieses kann in der erfindungsgemäßen Vorrichtung gespannt und aufgehängt werden, um nach erfolgter Beschleunigung die Materialbahn zu trennen. Mit einem Antrieb ist das Trennelement in Richtung Materialbahn beschleunigbar und trennt diese in einem Arbeitsschritt. Der Antrieb kann beispielsweise pneumatisch, hydraulisch oder elektrisch wirken. Auch ist eine Kombination beliebiger Antriebsprinzipien möglich.In the apparatus according to the invention, the separating element is tensioned by a tensile force, so that it assumes a rectilinear shape. It can thus be used as parting elements in addition to conventional separation elements, such as knives and rigid blade, also pliable elements. Separators that have no inherent dimensional stability, often have a lower mass than rigid dividers. Particularly advantageous is a separator with low mass, as this supports the acceleration to high speeds during the separation process. With low driving forces, a low mass separator can be brought up to high speeds in a very short time, ie it can experience high acceleration. High accelerations are necessary so that the separation process of the material web can be carried out quickly. A separator without its own dimensional stability and low mass, for example, a thin, tear-resistant rope. This can be stretched and hung in the device according to the invention, to after Acceleration to separate the web. With a drive, the separating element can be accelerated in the direction of the web and separates it in one step. The drive can, for example, act pneumatically, hydraulically or electrically. Also, a combination of any drive principles is possible.

Vorzugsweise weist das Trennelement eine Beschichtung auf, die den Trennvorgang unterstützt. Durch diese Beschichtung gewinnt das Trennelement an Festigkeit. Man verlängert somit auch die Haltbarkeit für einen dauerhaften Einsatz. Die Beschichtung kann auch scharfkantig sein, so daß sich eine sägezahnförmige Oberfläche des Trennelements ergibt, die vorteilhaft den Trennvorgang unterstützen kann.Preferably, the separator has a coating that supports the separation process. Due to this coating, the separating element gains in strength. It also extends the durability for a permanent use. The coating can also be sharp-edged, so that there is a sawtooth-shaped surface of the separating element, which can advantageously support the separation process.

Es ist besonders bevorzugt, daß das Trennelement als Länge mindestens die Breite der Materialbahn aufweist. Somit ist es möglich, die Materialbahn in nur einem Arbeitsschritt zu trennen, indem das Trennelement über die gesamte Breite der Materialbahn wirkt.It is particularly preferred that the separating element has at least the width of the material web as a length. Thus, it is possible to separate the web in only one step by the separator acts over the entire width of the web.

Zweckmäßigerweise ist das Trennelement in einem veränderbaren Winkel zur Laufrichtung der Materialbahn angeordnet. Dies hat den Vorteil, daß die laufende Materialbahn rechtwinklig bezüglich ihrer Längsseite getrennt werden kann. Der einstellbare Winkel des Trennelements ist in Abhängigkeit der Laufgeschwindigkeit der Materialbahn und in Abhängigkeit der Zeit, die zum Trennen benötigt wird, zu wählen, um eine rechtwinklige Schnittkante zu erhalten.Conveniently, the separating element is arranged at a variable angle to the running direction of the material web. This has the advantage that the moving material web can be separated at right angles with respect to its longitudinal side. The adjustable angle of the separating element is to be selected as a function of the running speed of the material web and as a function of the time required for cutting in order to obtain a rectangular cutting edge.

Erfindungsgemäß ist ein Übersetzungselement zwischen Trennelement und Antrieb angeordnet. Auf diese Weise kann die Kraft- und Beschleunigungswirkung des Antriebs auf das Übersetzungselement und somit auf das Trennelement übertragen oder sogar verstärkt werden.According to the invention a translation element between the separating element and the drive is arranged. In this way, the force and acceleration effect of the drive on the transmission element and thus transferred to the separator or even reinforced.

Hierbei ist das Übersetzungselement drehbar gelagert. Dadurch kann das Beschleunigungselement auf einem kreisförmigen Sektor in Richtung Materialbahn bewegt werden. Somit kann auch das daran befestigte Trennelement durch die Wirkung des Antriebs an die Materialbahn gebracht werden.Here, the translation element is rotatably mounted. As a result, the acceleration element can be moved on a circular sector in the direction of the material web. Thus, the attached separating element can be brought by the action of the drive to the web.

Vorzugsweise ist das Übersetzungselement als Hebel ausgebildet. Ein Hebel ist ein einfaches Mittel, um eine Kopplung zwischen dem Antrieb und dem Trennelement herzustellen. Mit dem Hebel kann die Kraftwirkung des Antriebs auf das Trennelement übertragen werden. Dabei ist eine Verstärkung der Kraft durch ein wählbares Übersetzungsverhältnis möglich, das durch die Befestigungs- und Antriebspunkte festgelegt wird. Eine Kraftverstärkung bewirkt gleichzeitig eine Verstärkung einer Beschleunigung, die am Befestigungspunkt des Trennelements erwünscht ist.Preferably, the translation element is designed as a lever. A lever is a simple means to establish a coupling between the drive and the separating element. With the lever, the force of the drive can be transmitted to the separating element. In this case, an increase in the power by a selectable gear ratio is possible, which is determined by the mounting and driving points. A power boost simultaneously causes an increase in acceleration that is desired at the attachment point of the separator.

In bevorzugter Weise ist die Länge einer ersten Hebelstrecke zwischen einem Lagerpunkt des Hebels und einem Befestigungspunkt des Trennelements am Hebel größer als die Länge einer zweiten Hebelstrecke zwischen dem Lagerpunkt des Hebels und einem Befestigungspunkt des Antriebs am Hebel. Dies bedeutet, daß der Befestigungspunkt des Trennelements weiter vom Lager des Hebels entfernt ist als der Befestigungspunkt des Antriebs. Somit ist festgelegt, daß bei einer Bewegung des Hebels durch den Antrieb der Befestigungspunkt des Trennelements eine längere Strecke auf einer Kreisbahn zurücklegt als der Befestigungspunkt des Antriebs. Dies bedeutet gleichzeitig eine Verstärkung der Beschleunigungswirkung.Preferably, the length of a first lever path between a bearing point of the lever and an attachment point of the separating element on the lever is greater than the length of a second lever path between the bearing point of the lever and an attachment point of the drive on the lever. This means that the attachment point of the separating element is further away from the bearing of the lever than the attachment point of the drive. Thus, it is determined that upon movement of the lever by the drive, the attachment point of the separating element travels a longer distance on a circular path than the attachment point of the drive. This also means an increase in the acceleration effect.

Zweckmäßigerweise ist die Länge einer dritten Hebelstrecke zwischen dem Befestigungspunkt des Trennelements und dem Befestigungspunkts des Antriebs größer als die Länge der zweiten Hebelstrecke zwischen dem Befestigungspunkt des Antriebs und dem Lagerpunkt des Hebels. Dies bedeutet, daß der Befestigungspunkt des Trennelements möglichst weit von dem Angriffspunktpunkt des Antriebs entfernt ist. Damit wird die Verstärkungswirkung des Hebels verbessert. Je größer der Abstand zwischen dem Befestigungspunkt des Antriebs und des Befestigungspunkts des Trennelementes ist, desto weniger Bewegung muß aufgewendet werden, damit das Trennelement aus seiner Ausgangsposition eine lange Strecke in kurzer Zeit zurücklegt. In der gleichen Zeit legt der Befestigungspunkt des Antriebs eine viel geringere Strecke zurück. Somit erfährt das Trennelement eine höhere Beschleunigung als die vom Antrieb gelieferte Beschleunigung.Conveniently, the length of a third lever path between the attachment point of the separating element and the attachment point of the drive is greater than the length of the second lever path between the attachment point of the drive and the bearing point of the lever. This means that the attachment point of the separating element is as far away as possible from the point of application of the drive. This improves the reinforcing effect of the lever. The greater the distance between the attachment point of the drive and the attachment point of the separating element, the less movement must be expended so that the separating element travels a long distance in a short time from its starting position. At the same time, the attachment point of the drive will travel a much shorter distance. Thus, the separator experiences a higher acceleration than the acceleration provided by the drive.

In einer Ausführungsvariante ist der Hebel als einarmiger Hebel ausgebildet. Ein einarmiger Hebel ist ein einfaches Mittel, um die Kraft- und Beschleunigungswirkung des Antriebs an das zu beschleunigende Trennelement weiterzuleiten. Durch die Anordnung des Antriebs im mittleren Bereich zwischen Befestigungspunkt des Trennelements und Lagerpunkt des Hebels und unter Beachtung der vorteilhaften Aufteilung der Hebelstrecken, ist eine effektive Kraft- und Beschleunigungswirkung möglich. So wird eine geringe Umfangsgeschwindigkeit am Befestigungspunkt des Antriebs in eine höhere Umfangsgeschwindigkeit am Befestigungspunkt des Trennelementes bezüglich des Lagerpunktes des Hebels umgewandelt.In one embodiment, the lever is designed as a one-armed lever. A one-armed lever is a simple means to forward the power and acceleration effect of the drive to the separator to be accelerated. The arrangement of the drive in the central region between the attachment point of the separating element and the bearing point of the lever and taking into account the advantageous distribution of the lever sections, an effective force and acceleration effect is possible. Thus, a low peripheral speed is converted at the attachment point of the drive to a higher peripheral speed at the attachment point of the separating element with respect to the bearing point of the lever.

Erfindungsgemäß ist an dem Trennelement eine Spannvorrichtung angeordnet. Mit Hilfe dieser Spannvorrichtung kann das Trennelement in seine Arbeitsform gebracht werden.According to the invention, a tensioning device is arranged on the separating element. With the help of this clamping device, the separating element can be brought into its working form.

In besonders einfacher praktischer Ausführung der Erfindung weist die Spannvorrichtung Federelemente auf, die an den Enden des Trennelements angeordnet sind. Auf diese Weise ist das Trennelement über seine gesamte Länge spannbar. Federelemente sind einfache Mittel, die das Trennelement in Form halten und gleichzeitig Bewegungen des Trennelementes unterstützen.In a particularly simple practical embodiment of the invention, the tensioning device on spring elements which are arranged at the ends of the separating element. In this way, the separating element can be tensioned over its entire length. Spring elements are simple means that hold the separator in shape while supporting movements of the separator.

Erfindungsgemäß ist vorgesehen, daß an der dem Übersetzungselement gegenüber liegenden Seite des Trennelementes eine Dämpfungseinrichtung angeordnet ist. Diese dämpft die Beschleunigung des Trennelementes nach erfolgtem Trennvorgang.According to the invention it is provided that on the translation element opposite side of the separating element, a damping device is arranged. This dampens the acceleration of the separating element after the separation process.

Zweckmäßigerweise ist die Dämpfungseinrichtung drehbar gelagert. Auf diese Weise kann die Einrichtung der Bewegung des Trennelementes von seiner Ausgangslage in seine Arbeitsposition und zurück nachgeführt werden. Die Dämpfungseinrichtung unterstützt so effektiv das Beenden des Beschleunigungsvorgangs des Trennelementes, nachdem die Materialbahn durchgetrennt wurde.Conveniently, the damping device is rotatably mounted. In this way, the device of the movement of the separating element can be tracked from its initial position to its working position and back. The damping device thus effectively supports the termination of the acceleration process of the separating element after the material web has been severed.

Gemäß einer Weiterführung der Erfindung ist das Trennelement mit einem zweiten Antrieb quer zur Laufrichtung der Materialbahn bewegbar. Mit diesem zweiten Antrieb wird das Trennen der Materialbahn mit einer Schneid- oder Sägebewegung des angetriebenen Trennelementes unterstützt.According to a continuation of the invention, the separating element is movable transversely to the running direction of the material web with a second drive. With this second drive, the separation of the material web is supported by a cutting or sawing movement of the driven separating element.

Die Erfindung wird nachstehend anhand eines in der Zeichnung dargestellten Ausführungsbeispiels näher erläutert. Hierin zeigt die

einzige Figur
eine schematische Darstellung der Erfindung.
The invention will be explained in more detail with reference to an embodiment shown in the drawing. Herein shows the
only figure
a schematic representation of the invention.

Unterhalb einer Materialbahn 1 befindet sich ein Trennelement 2, das an beiden Enden mit Spannvorrichtungen 3 geradlinig gespannt ist. Das Trennelement 2 weist eine geringe Masse auf, was für den Beschleunigungsvorgang vorteilhaft ist.Below a material web 1 is a separating element 2, which is stretched straight at both ends with clamping devices 3. The separating element 2 has a low mass, which is advantageous for the acceleration process.

In der dargestellten Ausführungsform ist das Trennelement 2 als hochfestes Seil mit einer Beschichtung ausgeführt, die die Festigkeit des Trennelementes 2 verbessert und gleichzeitig auch das Trennen zusätzlich unterstützen kann, zum Beispiel in Form von beschichteten scharfkantigen Körnern.In the illustrated embodiment, the separating element 2 is designed as a high-strength rope with a coating that improves the strength of the separating element 2 and at the same time can additionally support the separation, for example in the form of coated sharp-edged grains.

Die Spannvorrichtung 3 besteht aus zwei Federn, die sowohl das Trennelement 2 spannen als auch bei Bewegungen des Trennelementes 2 elastisch wirken.The tensioning device 3 consists of two springs which both tension the separating element 2 and act elastically during movements of the separating element 2.

An einem Ende 4 des Trennelements 2 ist ein Hebel 5 befestigt, der hier als einarmiger Hebel ausgeführt ist. Der Hebel 5 ist an einem Lagerpunkt 6 drehbar gelagert. Zwischen diesem Lagerpunkt 6 und einem Befestigungspunkt 7, an dem das Trennelement 2 am Hebel 5 befestigt ist, befindet sich ein Befestigungspunkt 8 eines Antriebs 9, der für die Beschleunigung des Hebels 5 und somit des Trennelementes 2 sorgt. Durch diese Anordnung ist die Länge einer ersten Hebelstrecke zwischen dem Lagerpunkt 6 und dem Befestigungspunkt 7 größer als die Länge einer zweiten Hebelstrecke zwischen dem Lagerpunkt 6 des Hebels und dem Befestigungspunkt 8 des Antriebs 9. Der Befestigungspunkt 8 des Antriebs 9 ist so gewählt, daß die Länge einer dritten Hebelstrecke zwischen dem Befestigungspunkt 7 des Trennelements 2 und dem Befestigungspunkt 8 des Antriebs 9 größer ist als die Länge der zweiten Hebelstrecke zwischen dem Lagerpunkt 6 des Hebels und dem Befestigungspunkt 8 des Antriebs. Auf diese Weise wird die Wirkung des Antriebs auf das Trennelement verstärkt.At one end 4 of the separating element 2, a lever 5 is fixed, which is designed here as a one-armed lever. The lever 5 is rotatably mounted on a bearing point 6. Between this bearing point 6 and an attachment point 7, on which the separating element 2 is fastened to the lever 5, there is an attachment point 8 of a drive 9, which ensures the acceleration of the lever 5 and thus of the separating element 2. By this arrangement, the length of a first lever path between the bearing point 6 and the attachment point 7 is greater than the length of a second lever path between the bearing point 6 of the lever and the attachment point 8 of the drive 9. The attachment point 8 of the drive 9 is chosen so that the Length of a third lever path between the attachment point 7 of the separating element 2 and the attachment point 8 of the drive 9 is greater than the length of the second lever path between the bearing point 6 of the lever and the attachment point eighth of the drive. In this way the effect of the drive on the separating element is enhanced.

Für das Trennen der Materialbahn 1 wirkt der Antrieb 9 so auf den Hebel 5, daß sich dieser in Pfeilrichtung zur Materialbahn hin auf einem Kreissegment um den Lagerpunkt 6 bewegt. Gleichzeitig wird das Trennelement 2 in Richtung der Materialbahn 1 bewegt und trennt diese beginnend an einer Kante 10 der Materialbahn, die dem Hebel 5 am nächsten ist. Durch die Kraft der Federelemente 3 wird das Trennelement 2 weiterhin in seiner Arbeitsposition gespannt gehalten.For the separation of the material web 1, the drive 9 acts on the lever 5 so that it moves in the direction of the arrow towards the material web on a circular segment around the bearing point 6. At the same time, the separating element 2 is moved in the direction of the material web 1 and separates it, starting at an edge 10 of the material web, which is closest to the lever 5. Due to the force of the spring elements 3, the separating element 2 is further kept taut in its working position.

Die weitere Drehbewegung des Hebels 5 sorgt dafür, daß das Trennelement 2 die gesamte Breite der Materialbahn 1 durchtrennt. Während des Trennvorgangs kann ein zweiter Antrieb 11 wirken, der das Trennelement 2 in eine Schneidbewegung quer zur Materialbahn 1 versetzt. Dieser Antrieb 11 ist an einem Befestigungspunkt 12 am Trennelement 2 befestigt.The further rotational movement of the lever 5 ensures that the separating element 2 cuts through the entire width of the material web 1. During the separation process, a second drive 11 can act, which displaces the separating element 2 in a cutting movement transversely to the material web 1. This drive 11 is attached to an attachment point 12 on the separating element 2.

Nach erfolgtem Trennen der Materialbahn 1 wirkt eine Dämpfungseinrichtung 13 der Beschleunigungsbewegung des Trennelementes 2 entgegen. Da sich das Trennelement 2 zum Trennen aus seiner Ausgangsposition herausbewegt, ist es sinnvoll, die Dämpfungseinrichtung an einem Lager 14 drehbar zu lagern, damit diese der Bewegung folgen kann und wirksam in einer Linie mit dem Trennelement 2 ist.After the material web 1 has been severed, a damping device 13 counteracts the acceleration movement of the separating element 2. Since the separating element 2 moves out of its initial position for separating, it makes sense to rotatably support the damping device on a bearing 14 so that it can follow the movement and is effectively in line with the separating element 2.

Claims (11)

  1. Apparatus for separating a web (1), having a movable separating element (2) which is arranged transversely with respect to the web (1) and which has a drive (9), the separating element (2), on which a tensioning apparatus (3) is arranged, being tensioned into an operating form and suspended by a tensile force produced by the tensioning apparatus (3), and a rotatably mounted step-up transmission element (5) being arranged between separating element (2) and drive (9),
    characterized in that
    there is a damping device (13) arranged on the side of the separating element (2) opposite to the step-up transmission element (5).
  2. Apparatus according to Claim 1,
    characterized in that
    the separating element (2) has a coating which assists the separating operation.
  3. Apparatus according to Claim 1 or 2,
    characterized in that
    the separating element (2) is at least as long as the width of the web (1).
  4. Apparatus according to one of Claims 1 to 3,
    characterized in that
    the separating element (2) is arranged at a
    variable angle with respect to the running direction of the web (1).
  5. Apparatus according to one of Claims 1 to 4,
    characterized in that
    the step-up transmission element is formed as a lever (5).
  6. Apparatus according to Claim 5,
    characterized in that
    the length of a first section of the lever between a mounting point (6) of the lever (5) and a fixing point (7) of the separating element (2) on the lever (5) is greater than the length of a second section of the lever between the mounting point (6) of the lever (5) and a fixing point (8) of the drive (9) on the lever.
  7. Apparatus according to Claim 6,
    characterized in that
    the length of a third section of the lever between the fixing point (7) of the separating element (2) and the fixing point (8) of the drive (9) is greater than the length of the second section of the lever between the fixing point (8) of the drive (9) and the mounting point (6) of the lever (5).
  8. Apparatus according to one of Claims 5 to 7,
    characterized in that
    the lever (5) is formed as a single-arm lever.
  9. Apparatus according to one of Claims 1 to 8,
    characterized in that
    the tensioning apparatus (3) has spring elements which are arranged at the ends of the separating element (2).
  10. Apparatus according to one of Claims 1 to 9,
    characterized in that
    the damping device (13) is rotatably mounted.
  11. Apparatus according to one of Claims 1 to 10,
    characterized in that
    the separating element (2) can be moved transversely with respect to the running direction of the web (1) by means of a second drive (11).
EP04106486A 2003-12-11 2004-12-10 Apparatus for separating a web Expired - Fee Related EP1541298B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE20319209U DE20319209U1 (en) 2003-12-11 2003-12-11 Device for cutting a web of material
DE20319209U 2003-12-11

Publications (2)

Publication Number Publication Date
EP1541298A1 EP1541298A1 (en) 2005-06-15
EP1541298B1 true EP1541298B1 (en) 2009-12-09

Family

ID=31984823

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04106486A Expired - Fee Related EP1541298B1 (en) 2003-12-11 2004-12-10 Apparatus for separating a web

Country Status (3)

Country Link
EP (1) EP1541298B1 (en)
AT (1) ATE451206T1 (en)
DE (2) DE20319209U1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113458518B (en) * 2021-05-26 2022-07-15 上海翌波光电科技有限公司 Crystal wire cutting equipment

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3055251A (en) * 1961-03-20 1962-09-25 Rice Barton Corp Spring tensioned cutting wire device
DE8317214U1 (en) * 1983-06-13 1984-09-13 Jagenberg AG, 4000 Düsseldorf RAIL CUTTING DEVICE ON WRAPPING MACHINES
DE3718082A1 (en) * 1987-05-29 1988-12-08 Will E C H Gmbh & Co Method and device for severing an endless web folded in a zigzag manner
DE4433207A1 (en) * 1994-09-17 1996-03-21 Voith Gmbh J M Cutter for dividing=up paper web

Also Published As

Publication number Publication date
ATE451206T1 (en) 2009-12-15
DE20319209U1 (en) 2004-03-04
DE502004010484D1 (en) 2010-01-21
EP1541298A1 (en) 2005-06-15

Similar Documents

Publication Publication Date Title
DE102008033776B4 (en) Corrugating machine
DE19510397A1 (en) Blower unit for car=wash
EP0716897A1 (en) Reciprocating and oscillating drive for sabre saws
DE2108064B2 (en) TIN SHEARS
EP1138423A1 (en) Shear for cutting webs
DE10047545B4 (en) Cutting and transporting roller with integrated cutting device with pivotable cutting surfaces and method for cutting material webs by means of such a roller
DE3436616A1 (en) RAIL SHAPING DEVICE
EP2106304B1 (en) Device for guiding a metal band, and method for the operation thereof
DE102005010948B4 (en) Device for separating a printed paper web
EP1541298B1 (en) Apparatus for separating a web
EP2582479B1 (en) Method and device for trimming heavy plates
EP1591231B1 (en) Folding hook
DE102008033775B4 (en) Corrugated board plant with a lock device and method for discharging pieces of a corrugated web
DE3718886C2 (en)
DE2441225B2 (en) Device for processing continuously running multilayer paper webs
DE102019102404B4 (en) Device for cutting a hose provided with a reinforcing element
EP1410925B1 (en) Clamping method and device for chamfering book spines
DE1627233C3 (en) Flying scissors for cutting off wire or tape sections
DE2700062A1 (en) HOSE JOINTING MACHINE
DE19647012B4 (en) Saw head for cutting linearly moving material in the transverse direction
DE2340273C3 (en) Pinch roller guide for sheet metal, especially heavy sheet metal, in scissor lines
DE3424114C2 (en)
CH592481A5 (en) Fixture for bending concrete reinforcement bars - has anvil and bending mandrel and crops bar after last bend
DE4433207A1 (en) Cutter for dividing=up paper web
DE2543990A1 (en) HORIZONTAL SPLITTING MACHINE

Legal Events

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

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU MC NL PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA HR LV MK YU

17P Request for examination filed

Effective date: 20051215

AKX Designation fees paid

Designated state(s): AT DE ES FI IT SE

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

Owner name: VOITH PATENT GMBH

17Q First examination report despatched

Effective date: 20070529

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT DE ES FI IT SE

REF Corresponds to:

Ref document number: 502004010484

Country of ref document: DE

Date of ref document: 20100121

Kind code of ref document: P

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20091222

Year of fee payment: 6

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20100320

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

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

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed

Effective date: 20100910

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20101214

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20101214

Year of fee payment: 7

Ref country code: IT

Payment date: 20101222

Year of fee payment: 7

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FI

Payment date: 20111214

Year of fee payment: 8

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20111222

Year of fee payment: 8

REG Reference to a national code

Ref country code: SE

Ref legal event code: EUG

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111211

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20111210

REG Reference to a national code

Ref country code: AT

Ref legal event code: MM01

Ref document number: 451206

Country of ref document: AT

Kind code of ref document: T

Effective date: 20121210

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121210

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502004010484

Country of ref document: DE

Effective date: 20130702

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20121210

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20130702