EP0771624B1 - Cutting device for webs of flat material - Google Patents

Cutting device for webs of flat material Download PDF

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Publication number
EP0771624B1
EP0771624B1 EP96117476A EP96117476A EP0771624B1 EP 0771624 B1 EP0771624 B1 EP 0771624B1 EP 96117476 A EP96117476 A EP 96117476A EP 96117476 A EP96117476 A EP 96117476A EP 0771624 B1 EP0771624 B1 EP 0771624B1
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EP
European Patent Office
Prior art keywords
damping
cutting mechanism
piece
flat material
material 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 - Lifetime
Application number
EP96117476A
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German (de)
French (fr)
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EP0771624A3 (en
EP0771624A2 (en
Inventor
Jürgen Ott
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.)
Meto International GmbH
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Meto International GmbH
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Filing date
Publication date
Priority claimed from DE1995141104 external-priority patent/DE19541104C1/en
Application filed by Meto International GmbH filed Critical Meto International GmbH
Publication of EP0771624A2 publication Critical patent/EP0771624A2/en
Publication of EP0771624A3 publication Critical patent/EP0771624A3/en
Application granted granted Critical
Publication of EP0771624B1 publication Critical patent/EP0771624B1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65HHANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H35/00Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/0006Article or web delivery apparatus incorporating cutting or line-perforating devices
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00Cutting 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
    • B26D1/01Cutting 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
    • B26D1/12Cutting 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
    • B26D1/25Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member
    • B26D1/34Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut
    • B26D1/38Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member
    • B26D1/385Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a non-circular cutting member moving about an axis parallel to the line of cut and coacting with a fixed blade or other fixed member for thin material, e.g. for sheets, strips or the like
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B26HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26DCUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D7/00Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/08Means for treating work or cutting member to facilitate cutting

Definitions

  • the invention relates to a cutting device for a funded Flat material web, in particular for the production of labels, wherein the cutting device has an input section, a cutting section, an output section, and one Input section assigned, facing the flat material web Has damping device.
  • DE-OS 2 364 035 discloses a generic device for cutting sheet material, in particular from Paper webs for making cards. Before the web reached a cutting device with which they can be divided into individual Sections is cut, it is between a brake roller and passed through an angled plate or a trough, to relieve some of the tension from the web, which is created by an upstream transport device and so the formation of burrs or other deformations perforation holes interacting with the transport device to prevent the material web.
  • a cutting mechanism serves to cut off sections of a path of a record carrier, for example as tags serve.
  • the cutting mechanism cuts longitudinally moving web transversal and has interacting Cutting knife.
  • the cutting mechanism is within one Housing with an input section in the form of an opening for Introducing the web arranged.
  • the separated sections of the Sheets are then placed within the housing Stacking device fed.
  • Such cutting devices are used, for example, as so-called label cutters subordinate to a printing unit in which the continuously conveyed flat material web in sections is printed.
  • the cutting device successive printed sections of the flat material web in the essentially cut transversely to the web direction.
  • the separating cut that runs transversely to the transport direction is usually carried out by a rotating knife roller, whose axis of rotation is perpendicular to the direction of transport and runs parallel to the railway level.
  • At least one in scope Knife bar provided for the cutting roller preferably runs slightly spiral, so that when operating the cutter one from one side of the web to the other side running cut is generated.
  • the cutting speed compared to the transport speed of the Flat material web is very high, disturbs or blocks the Cut perpendicular to the direction of transport the transport process the train. It was found that this is contrary in the direction of transport the flat material web are formed. There are also twists in the plane of the flat material web around the current one Position of the intersection perpendicular to the path.
  • shock waves Plant the disturbances referred to as shock waves continues against the transport direction of the flat material web and can lift off a printhead's upstream Print unit cause poor print quality leads. In the case of bar code printers, this can lead to the printed bar code is no longer legible.
  • the brake roller from DE-OS 2 364 035 is relatively complex and expensive and only lies on its surface line on the Flat material web on so that no flat contact and no sufficient damping of the shock waves can occur.
  • the present invention is therefore based on the object to further develop a cutting device of the generic type, that the resulting from the cutting process unwanted shock waves are absorbed and damped in such a way that they only have a significantly reduced disadvantage Influence on a device upstream of the input section can have.
  • This task is accomplished by a cutter of the outset mentioned type solved, which is characterized in that the Damping device for absorption and damping as a result of Shock waves occurring during the cutting process Flat material web from a damping plate or one Damping plate is formed.
  • the cutting device according to the invention is therefore not prevents the occurrence of shock waves per se, but theirs disturbing spread against the direction of transport.
  • the damping device is from a damping plate or a damping plate formed which or which of the flat material web is facing.
  • the damping plate or sheet could itself on the Flat material web lie on top and so a spread of Prevent shock waves.
  • Damping plate or plate to be pivoted so that it from shock waves occurring in the flat material web is deflectable.
  • the damping device, in particular the plate or the Sheet is biased towards the flat material web and the biasing force of the damping device adjustable is. The latter can be done, for example, by different positioning or breakpoints of a leg of a spring, in particular a spiral spring.
  • the Damping device designed and arranged so that it also serves as a guide for the flat material web.
  • the curved version already mentioned has proven itself for this the damping plate or sheet as advantageous.
  • the input section of the cutting device preferably has an insertion slot tapering in the transport direction on, at least on one side of the damping plate or the sheet is limited. This insertion slot is open the opposite of the damping plate or sheet Side delimited by a guide surface, which in particular is also curved in an arc. They are advantageous two curvatures in the same direction.
  • the damping device can advantageously so be formed that the damping plate or the sheet the guide surface rests.
  • the plate or sheet can with a surface running transversely to the direction of transport or edge rest on the guide surface.
  • an embodiment is preferred in which the damping plate or the sheet metal via spacers on the side Guide surface rests, so that even a very thin web, about a thermal printing paper with a thickness of approx. 0.18 mm, easily into the input section of the cutting device can be introduced.
  • the clear cross section of the The insertion slot preferably has the smallest Extent transverse to the web plane, which is slightly larger than the thickness of the web. Even minor Shock wave amplitudes are then effectively damped.
  • the damping plate or plate advantageously has a minimum distance from the guide surface of 0.35 to 2 mm, preferably from 0.5 to 1 mm.
  • the figures show a cutting device according to one preferred embodiment of the invention.
  • the Cutting device comprises a housing 2 on which one with a pivotable housing cover 4 which can be covered with a cutting unit 6 is put on.
  • the housing 2 is the electronics and Drive for the cutting unit 6 housed.
  • the Cutting device is with its housing 2 over a Fastening device 8 on a part shown only Printer unit 10 arranged.
  • the cutting device comprises an input section 12 for one to be separated into successive sections Flat material web, a cutting section 14 and one Output section 16 for those separated transversely to the transport direction Sections of the web.
  • the cutting unit 6 includes one Cutting roller 18 which is transverse to the direction of transport intersecting flat material web is rotatable and also Knife strips 20 extending transversely to the direction of transport.
  • the cutting roller 18 is solenoid controlled during the cutting process driven so that the male connectors on a stationary turn over biased cutting bar 22, which as Counter bearing for the male connectors 20 is used. Since the Knife strips 20, as can be seen from FIG. 1, slightly spiral, the intersection moves, i.e. the point of contact between the knife bar 20 and the cutting bar 22, transverse to the direction of transport from a longitudinal edge of the Flat material web to the other.
  • the damping device 24 comprises a curved damping plate 26, which one Guide surface 28 of the input section 12 is assigned.
  • the Damping plate 26 and the guide surface 28 limit one in Transport direction tapered insertion slot 30 for the Flat material web to be cut into sections.
  • the Damping plate 26 is transverse to the transport direction extending axis 31 pivotable on the fastening device 8 articulated and by a coil spring 32 in the direction of Guide surface 28 biased.
  • Breakpoints 34 for the one facing away from the damping plate 26 Leg 36 of the coil spring 32 is provided, by means of which the Biasing force of the damping device 24 can be set can.
  • the damping plate 26 is supported against the Guide surface 28, the damping plate 26 not with an edge running transversely to the transport direction on the Guide surface 28 rests, but on the side Spacer 38 touches the guide surface 28 so that a slot-shaped spacing is given, by which also thin guideways, such as thermal printing paper with a thickness 0.18 mm in the direction of the cutting unit 6 can be introduced.
  • shock waves now occur during operation of the cutting device so they lead to the deflection of the resiliently biased Damping plate 26, whereby the shock waves by suitable Choice of preload so much energy that it is withdrawn not in the area of the print head of the printing unit 10 can be disruptive.
  • the Fastening device 8 comprises a total of Reference numeral 40 denotes the holding section, which on its an anchor plate 42 facing away from the housing 2 which has a complementarily shaped receptacle 44 the printing unit 10 can be inserted.
  • the anchor plate 42 comprises two threaded bolts 46 which have an opening 48 of the Pass through holding section 40 in the direction of the housing 2 and are screwed to a nut 50 at their free end. By tightening the nut 50, the holding portion 40 can be fixed in place on the printing unit 10; only after that the housing 2 is mounted with the cutting unit 6.
  • the holding section 40 furthermore has two parallel, in On the housing 2 projecting bolts 52 on via front threaded holes 54 and screws 56 on the Holding section 40 are attached. Hold the bolts 52 and guide the housing 2.
  • the housing 2 Through openings 60 are provided through which the Pin 52 extend through when the housing 2 on this is postponed.
  • the ones reaching through the housing Free ends 62 of the bolts 52 are on the front Tapped holes 64 and screws 66 with a plate-shaped Reference element 68 connected.
  • the housing 2 is on the bolt 52 slidably mounted, the one hand Reference element 68 and on the other one an axial Stop 70 forming sleeve 72, which on a bolt 52nd pushed and between the housing 2 and the holding portion 40 is arranged to form a boundary.
  • a set screw 74 is provided which extends from the outside a threadless through hole 76 in the reference element 68 extends through and into an external thread section 78 is screwed into the housing 2.
  • the set screw 74 is in relation to the unthreaded through opening 76 Reference element 68 rotatable, and it is by means of a Washer and a toothed spring washer in the axial direction coupled to the reference element so that when screwing in or unscrewing the set screw 74 in or out of Threaded section 78, the housing 2 towards the Reference element 68 or away from this in the direction of the Stop 70 of the sleeve 72 is moved.
  • the Housing 2 is essentially free of play on the bolt 52 guided and by the of reference element 68, adjusting screw 74 and internal thread section 78 formed adjusting device 80 adjustable.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Handling Of Sheets (AREA)
  • Making Paper Articles (AREA)
  • Details Of Cutting Devices (AREA)

Description

Die Erfindung betrifft eine Schneideinrichtung für eine geförderte Flachmaterialbahn, insbesondere zur Herstellung von Etiketten, wobei die Schneideinrichtung einen Eingabeabschnitt, einen Schneidabschnitt, einen Ausgabeabschnitt, sowie eine dem Eingabeabschnitt zugeordnete, der Flachmaterialbahn zugewandte Dämpfungsvorrichtung aufweist.The invention relates to a cutting device for a funded Flat material web, in particular for the production of labels, wherein the cutting device has an input section, a cutting section, an output section, and one Input section assigned, facing the flat material web Has damping device.

Die DE-OS 2 364 035 offenbart eine gattungsgemäße Vorrichtung zum Durchtrennen bahnförmigen Materials, insbesondere von Papierbahnen zur Herstellung von Karten. Bevor die Materialbahn eine Schneideinrichtung erreicht, mit der sie in einzelne Abschnitte geschnitten wird, wird sie zwischen einer Bremswalze und einer gewinkelten Platte oder einem Trog hindurchgeführt, um die Bahn von einem Teil der Spannung zu entlasten, die durch eine vorgeschaltete Transporteinrichtung entsteht und so das Entstehen von Graten oder anderer Verformungen an mit der Transporteinrichtung interagierenden Perforationslöchern der Materialbahn zu verhindern.DE-OS 2 364 035 discloses a generic device for cutting sheet material, in particular from Paper webs for making cards. Before the web reached a cutting device with which they can be divided into individual Sections is cut, it is between a brake roller and passed through an angled plate or a trough, to relieve some of the tension from the web, which is created by an upstream transport device and so the formation of burrs or other deformations perforation holes interacting with the transport device to prevent the material web.

Eine andere Schneideinrichtung ist aus der GB 2 169 237 A und der DE 36 42 562 A bekannt geworden. Ein Schneidemechanismus dient zum Abtrennen von Abschnitten einer Bahn eines Aufzeichnungsträgers, die dann beispielsweise als Anhängeetiketten dienen. Der Schneidemechanismus schneidet die sich longitudinal bewegende Bahn transversal und hat zusammenwirkende Schneidemesser. Der Schneidemechanismus ist innerhalb eines Gehäuses mit einem Eingabeabschnitt in Form einer Öffnung zum Einführen der Bahn angeordnet. Die abgetrennten Abschnitte der Bahn werden dann einer innerhalb des Gehäuses angeordneten Stapelvorrichtung zugeführt.Another cutting device is from GB 2 169 237 A and DE 36 42 562 A become known. A cutting mechanism serves to cut off sections of a path of a record carrier, for example as tags serve. The cutting mechanism cuts longitudinally moving web transversal and has interacting Cutting knife. The cutting mechanism is within one Housing with an input section in the form of an opening for Introducing the web arranged. The separated sections of the Sheets are then placed within the housing Stacking device fed.

Derartige Schneideinrichtungen werden bspw. als sog. Etikettencutter einer Druckeinheit nachgeordnet, in der die kontinuierlich geförderte Flachmaterialbahn abschnittsweise bedruckt wird. In der Schneideinrichtung werden aufeinanderfolgende bedruckte Abschnitte der Flachmaterialbahn im wesentlichen quer zur Bahnrichtung abgetrennt.Such cutting devices are used, for example, as so-called label cutters subordinate to a printing unit in which the continuously conveyed flat material web in sections is printed. In the cutting device, successive printed sections of the flat material web in the essentially cut transversely to the web direction.

Der quer zur Transportrichtung verlaufende Trennschnitt wird üblicherweise von einer rotierenden Messerwalze ausgeführt, deren Rotationsachse senkrecht zur Transportrichtung und parallel zur Bahnebene verläuft. Wenigstens eine am Umfang der Schneidwalze vorgesehene Messerleiste verläuft vorzugsweise geringfügig spiralförmig, so daß beim Betrieb der Schneideinrichtung ein von einer Seite der Bahn zur anderen Seite verlaufender Schnitt erzeugt wird. Obschon die Schnittgeschwindigkeit gegenüber der Transportgeschwindigkeit der Flachmaterialbahn sehr hoch ist, stört bzw. blockiert der senkrecht zur Transportrichtung verlaufende Schnitt den Transportvorgang der Bahn. Es wurde festgestellt, daß hierbei entgegen der Transportrichtung sich ausbreitende Stoßwellen in der Flachmaterialbahn gebildet werden. Außerdem treten Verwindungen in der Ebene der Flachmaterialbahn um die momentane Lage des quer zur Bahn verlaufenden Schnittpunkts auf. Diese Verwindungen resultieren daher, daß - bei Betrachtung eines Schneidvorgangs - im Bereich hinter dem Schnittpunkt der Messerleiste, wo also bereits getrennt wurde, der nachgeförderten Bahn keinerlei Widerstand entgegengesetzt wird, daß aber an der momentanen Position des Schnittpunkts der nachgeförderten Bahn ein maximaler Widerstand entgegengesetzt wird. An dem in Schneidrichtung noch nicht abgetrennten Abschnitt vor der momentanen Position des Schnittpunkts wird der nachgeförderten Bahn ein Widerstand entgegengesetzt, der größenordnungsmäßig zwischen den Widerstandswerten bei den beiden vorstehend geschilderten Abschnitten liegt.The separating cut that runs transversely to the transport direction is usually carried out by a rotating knife roller, whose axis of rotation is perpendicular to the direction of transport and runs parallel to the railway level. At least one in scope Knife bar provided for the cutting roller preferably runs slightly spiral, so that when operating the cutter one from one side of the web to the other side running cut is generated. Although the cutting speed compared to the transport speed of the Flat material web is very high, disturbs or blocks the Cut perpendicular to the direction of transport the transport process the train. It was found that this is contrary in the direction of transport the flat material web are formed. There are also twists in the plane of the flat material web around the current one Position of the intersection perpendicular to the path. This Twists therefore result in the fact that - when considering a Cutting process - in the area behind the intersection of the male connector, where it has already been separated, the post-funded No resistance is opposed to the railroad, but at the current position of the intersection of the replenished Path a maximum resistance is opposed. On the in Cutting direction not yet separated section before the current one The position of the intersection is the re-fed Opposed a resistance, the order of magnitude between the resistance values for the two above described sections.

Die insgesamt als Stoßwellen bezeichneten Störungen pflanzen sich entgegen der Transportrichtung der Flachmaterialbahn fort und können ein Abheben des Druckkopfes einer vorgeordneten Druckeinheit bewirken, was zu einer schlechten Druckqualität führt. Bei Bar-Code-Druckern kann dies dazu führen, daß der gedruckte Bar-Code nicht mehr lesbar ist.Plant the disturbances referred to as shock waves continues against the transport direction of the flat material web and can lift off a printhead's upstream Print unit cause poor print quality leads. In the case of bar code printers, this can lead to the printed bar code is no longer legible.

Die Bremswalze aus der DE-OS 2 364 035 ist relativ aufwendig und teuer und liegt nur auf ihrer Mantellinie auf der Flachmaterialbahn an, so daß kein flächiger Kontakt und keine hinreichende Dämpfung der Stoßwellen zustande kommen kann.The brake roller from DE-OS 2 364 035 is relatively complex and expensive and only lies on its surface line on the Flat material web on so that no flat contact and no sufficient damping of the shock waves can occur.

Der vorliegenden Erfindung liegt daher die Aufgabe zugrunde, eine Schneideinrichtung gattungsgemäßer Art dahingehend weiterzubilden, daß die durch den Schneidevorgang entstehenden, unerwünschten Stoßwellen derart aufgenommen und gedämpft werden, daß sie nur noch einen wesentlich reduzierten nachteiligen Einfluß auf eine dem Eingabeausschnitt vorgeschaltetes Gerät haben können.The present invention is therefore based on the object to further develop a cutting device of the generic type, that the resulting from the cutting process unwanted shock waves are absorbed and damped in such a way that they only have a significantly reduced disadvantage Influence on a device upstream of the input section can have.

Diese Aufgabe wird durch eine Schneideinrichtung der eingangs genannten Art gelöst, die dadurch gekennzeichnet ist, daß die Dämpfungsvorrichtung zur Aufnahme und Dämpfung infolge des Schneidvorgangs auftretender Stoßwellen bei der Flachmaterialbahn von einer Dämpfungsplatte oder einem Dämpfungsblech gebildet ist.This task is accomplished by a cutter of the outset mentioned type solved, which is characterized in that the Damping device for absorption and damping as a result of Shock waves occurring during the cutting process Flat material web from a damping plate or one Damping plate is formed.

Bei der erfindungsgemäßen Schneideinrichtung wird also nicht das Auftreten von Stoßwellen an sich verhindert, sondern ihre störende Ausbreitung entgegen der Transportrichtung. Durch Dämpfen der Stoßwellen wird deren Energie aufgenommen, so daß sie je nach Stärke der Dämpfung in einem bestimmten Abstand von der Schneideinrichtung, etwa im Bereich des Druckkopfs einer Druckeinheit, nicht mehr festgestellt werden können oder sich zumindest nicht mehr störend auswirken. Die Dämpfungsvorrichtung wird von einer Dämpfungsplatte oder einem Dämpfungsblech gebildet, welche bzw. welches der Flachmaterialbahn zugewandt ist. Beim Auftreten von Stoßwellen ist dann ein flächenhafter Kontakt zwischen der Dämpfungsplatte oder dem - blech und der Bahn gegeben, wodurch die Energie der Stoßwellen effizient aufgenommen werden kann.In the cutting device according to the invention is therefore not prevents the occurrence of shock waves per se, but theirs disturbing spread against the direction of transport. By Damping the shock waves their energy is absorbed, so that depending on the strength of the damping at a certain distance from the cutting device, for example in the area of the printhead a printing unit, can no longer be determined or at least no longer interfere. The damping device is from a damping plate or a damping plate formed which or which of the flat material web is facing. When shock waves occur, a extensive contact between the damping plate or the - sheet metal and the web given the energy of the shock waves can be absorbed efficiently.

Es hat sich dabei als vorteilhaft erwiesen, wenn die Dämpfungsplatte oder das -blech gebogen ausgebildet ist.It has proven to be advantageous if the Damping plate or the sheet is bent.

Die Dämpfungsplatte oder das -blech könnte an sich auf der Flachmaterialbahn aufliegen und so eine Ausbreitung der Stoßwellen verhindern. Demgegenüber wird vorgeschlagen, die Dämpfungsplatte oder das -blech schwenkbar anzuordnen, so daß es von bei der Flachmaterialbahn auftretenden Stoßwellen auslenkbar ist. Dabei erweist es sich als vorteilhaft, wenn die Dämpfungsvorrichtung, insbesondere die Platte oder das Blech in Richtung auf die Flachmaterialbahn vorgespannt ist und die Vorspannkraft der Dämpfungsvorrichtung einstellbar ist. Letzteres kann bspw. durch verschiedene Positionierungen oder Haltepunkte eines Schenkels einer Feder, insbesondere einer Spiralfeder, erreicht werden.The damping plate or sheet could itself on the Flat material web lie on top and so a spread of Prevent shock waves. In contrast, it is proposed that Damping plate or plate to be pivoted so that it from shock waves occurring in the flat material web is deflectable. It proves to be advantageous if the damping device, in particular the plate or the Sheet is biased towards the flat material web and the biasing force of the damping device adjustable is. The latter can be done, for example, by different positioning or breakpoints of a leg of a spring, in particular a spiral spring.

Bei einer bevorzugten Ausführungsform der Erfindung ist die Dämpfungsvorrichtung so ausgebildet und angeordnet, daß sie zugleich als Leitmittel für die Flachmaterialbahn dient. Hierfür erweist sich die bereits erwähnte gebogene Ausführung der Dämpfungsplatte oder des -blechs als vorteilhaft. Vorzugsweise weist der Eingabeabschnitt der Schneideinrichtung einen in Transportrichtung sich verjüngenden Einführschlitz auf, der zumindest auf einer Seite von der Dämpfungsplatte oder dem -blech begrenzt ist. Dieser Einführschlitz ist auf der der Dämpfungsplatte oder dem -blech gegenüberliegenden Seite von einer Führungsfläche begrenzt, die insbesondere ebenfalls bogenförmig gekrümmt ist. Vorteilhaft sind die beiden Krümmungen gleichsinnig.In a preferred embodiment of the invention, the Damping device designed and arranged so that it also serves as a guide for the flat material web. The curved version already mentioned has proven itself for this the damping plate or sheet as advantageous. The input section of the cutting device preferably has an insertion slot tapering in the transport direction on, at least on one side of the damping plate or the sheet is limited. This insertion slot is open the opposite of the damping plate or sheet Side delimited by a guide surface, which in particular is also curved in an arc. They are advantageous two curvatures in the same direction.

Die Dämpfungsvorrichtung kann vorteilhafterweise so ausgebildet sein, daß die Dämpfungsplatte oder das -blech auf der Führungsfläche aufliegt. Die Platte oder das Blech kann dabei mit einer quer zur Transportrichtung verlaufenden Fläche oder Kante auf der Führungsfläche aufliegen. Demgegenüber wird jedoch eine Ausführung bevorzugt, bei der die Dämpfungsplatte oder das -blech über seitliche Abstandshalter auf der Führungsfläche aufliegt, so daß auch eine sehr dünne Bahn, etwa ein Thermodruckpapier mit einer Dicke von ca. 0,18 mm, problemlos in den Eingabeabschnitt der Schneideinrichtung eingeführt werden kann. Der lichte Querschnitt des Einführschlitzes weist dabei vorzugsweise eine geringste Erstreckung quer zur Bahnebene auf, die geringfügig größer ist als die Dicke der Bahn. Schon geringfügige Stoßwellenamplituden werden dann effektiv gedämpft. Vorteilhafterweise weist die Dämpfungsplatte oder das -blech einen kleinsten Abstand von der Führungsfläche von 0,35 bis 2 mm, vorzugsweise von 0,5 bis 1 mm auf.The damping device can advantageously so be formed that the damping plate or the sheet the guide surface rests. The plate or sheet can with a surface running transversely to the direction of transport or edge rest on the guide surface. In contrast however, an embodiment is preferred in which the damping plate or the sheet metal via spacers on the side Guide surface rests, so that even a very thin web, about a thermal printing paper with a thickness of approx. 0.18 mm, easily into the input section of the cutting device can be introduced. The clear cross section of the The insertion slot preferably has the smallest Extent transverse to the web plane, which is slightly larger than the thickness of the web. Even minor Shock wave amplitudes are then effectively damped. The damping plate or plate advantageously has a minimum distance from the guide surface of 0.35 to 2 mm, preferably from 0.5 to 1 mm.

Weitere Merkmale, Einzelheiten und Vorteile der Erfindung ergeben sich aus den beigefügten Schutzansprüchen und der zeichnerischen Darstellung sowie der nachfolgenden Beschreibung einer vorteilhaften Ausführungsform der erfindungsgemäßen Schneideinrichtung. In der Zeichnung zeigt:

Figur 1
eine teilweise geschnittene Seitenansicht einer erfindungsgemäßen Schneideinrichtung; und
Figur 2
eine teilweise geschnittene Draufsicht auf die Schneideinrichtung nach Figur 1.
Further features, details and advantages of the invention result from the appended protection claims and the drawing and the following description of an advantageous embodiment of the cutting device according to the invention. The drawing shows:
Figure 1
a partially sectioned side view of a cutting device according to the invention; and
Figure 2
2 shows a partially sectioned top view of the cutting device according to FIG. 1.

Die Figuren zeigen eine Schneideinrichtung gemäß einer bevorzugten Ausführungsform der Erfindung. Die Schneideinrichtung umfaßt ein Gehäuse 2, auf dem eine mit einem schwenkbaren Gehäusedeckel 4 abdeckbare Schneideinheit 6 aufgesetzt ist. Im Gehäuse 2 ist die Elektronik und der Antrieb für die Schneideinheit 6 untergebracht. Die Schneideinrichtung ist mit ihrem Gehäuse 2 über eine Befestigungsvorrichtung 8 an einer nur teilweise dargestellten Druckereinheit 10 angeordnet.The figures show a cutting device according to one preferred embodiment of the invention. The Cutting device comprises a housing 2 on which one with a pivotable housing cover 4 which can be covered with a cutting unit 6 is put on. In the housing 2 is the electronics and Drive for the cutting unit 6 housed. The Cutting device is with its housing 2 over a Fastening device 8 on a part shown only Printer unit 10 arranged.

Die Schneideinrichtung umfaßt einen Eingabeabschnitt 12 für eine in aufeinanderfolgende Abschnitte zu trennende Flachmaterialbahn, einen Schneidabschnitt 14 und einen Ausgabeabschnitt 16 für quer zur Transportrichtung abgetrennte Abschnitte der Bahn. Die Schneideinheit 6 umfaßt eine Schneidwalze 18, die quer zur Transportrichtung der zu schneidenden Flachmaterialbahn umdrehbar ist und ebenfalls quer zur Transportrichtung verlaufende Messerleisten 20 trägt. Die Schneidwalze 18 wird beim Schneidvorgang solenoidgesteuert angetrieben, so daß sich die Messerleisten an einem ortsfesten vorgespannten Schneidbalken 22 vorbeidrehen, der als Gegenlager für die Messerleisten 20 dient. Da die Messerleisten 20, wie dies aus der Figur 1 ersichtlich ist, geringfügig spiralförmig verlaufen, wandert der Schnittpunkt, d.h. der Berührungspunkt von Messerleiste 20 und Schneidbalken 22, quer zur Transportrichtung von einer Längskante der Flachmaterialbahn zur anderen. The cutting device comprises an input section 12 for one to be separated into successive sections Flat material web, a cutting section 14 and one Output section 16 for those separated transversely to the transport direction Sections of the web. The cutting unit 6 includes one Cutting roller 18 which is transverse to the direction of transport intersecting flat material web is rotatable and also Knife strips 20 extending transversely to the direction of transport. The cutting roller 18 is solenoid controlled during the cutting process driven so that the male connectors on a stationary turn over biased cutting bar 22, which as Counter bearing for the male connectors 20 is used. Since the Knife strips 20, as can be seen from FIG. 1, slightly spiral, the intersection moves, i.e. the point of contact between the knife bar 20 and the cutting bar 22, transverse to the direction of transport from a longitudinal edge of the Flat material web to the other.

Beim Ausführen eines Schneidvorgangs entstehen Stoßwellen, die sich entgegen der Transportrichtung in Richtung auf den nicht dargestellten Druckkopf der Druckeinheit 10 fortpflanzen und zu Störungen führen. Um diesen Stoßwellen zu begegnen, ist eine insgesamt mit dem Bezugszeichen 24 dargestellte Dämpfungsvorrichtung vorgesehen. Die Dämpfungsvorrichtung 24 umfaßt ein gebogenes Dämpfungsblech 26, welches einer Führungsfläche 28 des Eingabeabschnitts 12 zugeordnet ist. Das Dämpfungsblech 26 und die Führungfläche 28 begrenzen einen in Transportrichtung sich verjüngenden Einführschlitz 30 für die in Abschnitte zu schneidende Flachmaterialbahn. Das Dämpfungsblech 26 ist um eine quer zur Transportrichtung verlaufende Achse 31 schwenkbar an der Befestigungsvorrichtung 8 angelenkt und durch eine Spiralfeder 32 in Richtung auf die Führungsfläche 28 vorgespannt. Es sind verschiedene Haltepunkte 34 für den von dem Dämpfungsblech 26 abgewandten Schenkel 36 der Spiralfeder 32 vorgesehen, mittels derer die Vorspannkraft der Dämpfungsvorrichtung 24 eingestellt werden kann. Das Dämpfungsblech 26 stützt sich gegen die Führungsfläche 28 ab, wobei das Dämpfungsblech 26 nicht mit einem quer zur Transportrichtung verlaufenden Rand auf der Führungsfläche 28 aufliegt, sondern über seitliche Abstandshalter 38 die Führungsfläche 28 berührt, so daß eine schlitzförmige Beabstandung gegeben ist, durch welche auch dünne Führungsbahnen, etwa Thermodruckpapier mit einer Dicke von ca. 0,18 mm in Richtung auf die Schneideinheit 6 eingeführt werden können.Shock waves occur when a cutting process is carried out against the direction of transport towards the not reproduce the printhead of the printing unit 10 and lead to malfunctions. To counter these shock waves is one shown overall with reference numeral 24 Damping device provided. The damping device 24 comprises a curved damping plate 26, which one Guide surface 28 of the input section 12 is assigned. The Damping plate 26 and the guide surface 28 limit one in Transport direction tapered insertion slot 30 for the Flat material web to be cut into sections. The Damping plate 26 is transverse to the transport direction extending axis 31 pivotable on the fastening device 8 articulated and by a coil spring 32 in the direction of Guide surface 28 biased. They are different Breakpoints 34 for the one facing away from the damping plate 26 Leg 36 of the coil spring 32 is provided, by means of which the Biasing force of the damping device 24 can be set can. The damping plate 26 is supported against the Guide surface 28, the damping plate 26 not with an edge running transversely to the transport direction on the Guide surface 28 rests, but on the side Spacer 38 touches the guide surface 28 so that a slot-shaped spacing is given, by which also thin guideways, such as thermal printing paper with a thickness 0.18 mm in the direction of the cutting unit 6 can be introduced.

Treten nun im Betrieb der Schneideinrichtung Stoßwellen auf, so führen diese zur Auslenkung des nachgiebig vorgespannten Dämpfungsblechs 26, wodurch den Stoßwellen durch geeignete Wahl der Vorspannung so viel Energie entzogen wird, daß sie sich im Bereich des Druckkopfs der Druckeinheit 10 nicht störend auswirken können.If shock waves now occur during operation of the cutting device, so they lead to the deflection of the resiliently biased Damping plate 26, whereby the shock waves by suitable Choice of preload so much energy that it is withdrawn not in the area of the print head of the printing unit 10 can be disruptive.

Es wird nun die verstellbare Befestigung des Gehäuses 2 der Schneideinrichtung an der Druckeinheit 10 beschrieben. Die Befestigungsvorrichtung 8 umfaßt einen insgesamt mit dem Bezugszeichen 40 bezeichneten Halteabschnitt, der auf seiner von dem Gehäuse 2 abgewandten Seite eine Ankerplatte 42 aufweist, welche in eine komplementär ausgebildete Aufnahme 44 der Druckeinheit 10 einschiebbar ist. Die Ankerplatte 42 umfaßt zwei Gewindebolzen 46, die eine Öffnung 48 des Halteabschnitts 40 in Richtung auf das Gehäuse 2 durchgreifen und an ihrem freien Ende mit einer Mutter 50 verschraubt sind. Durch Festziehen der Mutter 50 kann der Halteabschnitt 40 ortsfest an der Druckeinheit 10 fixiert werden; erst hiernach wird das Gehäuse 2 mit der Schneideinheit 6 montiert.There is now the adjustable attachment of the housing 2 of the Cutting device described on the printing unit 10. The Fastening device 8 comprises a total of Reference numeral 40 denotes the holding section, which on its an anchor plate 42 facing away from the housing 2 which has a complementarily shaped receptacle 44 the printing unit 10 can be inserted. The anchor plate 42 comprises two threaded bolts 46 which have an opening 48 of the Pass through holding section 40 in the direction of the housing 2 and are screwed to a nut 50 at their free end. By tightening the nut 50, the holding portion 40 can be fixed in place on the printing unit 10; only after that the housing 2 is mounted with the cutting unit 6.

Der Halteabschnitt 40 weist desweiteren zwei parallele, in Richtung auf das Gehäuse 2 vorspringende Bolzen 52 auf, die über stirnseitige Gewindebohrungen 54 und Schrauben 56 an dem Halteabschnitt 40 befestigt sind. Die Bolzen 52 halten und führen das Gehäuse 2. Hierzu sind in dem Gehäuse 2 Durchgangsöffnungen 60 vorgesehen, durch welche sich die Bolzen 52 hindurcherstrecken, wenn das Gehäuse 2 auf diese aufgeschoben wird. Die durch das Gehäuse hindurchgreifenden freien Enden 62 der Bolzen 52 sind über stirnseitige Gewindebohrungen 64 und Schrauben 66 mit einem plattenförmigen Referenzelement 68 verbunden. Das Gehäuse 2 ist auf den Bolzen 52 verschieblich gelagert, wobei einerseits das Referenzelement 68 und andererseits eine einen axialen Anschlag 70 bildende Hülse 72, die auf einen Bolzen 52 aufgeschoben und zwischen dem Gehäuse 2 und dem Halteabschnitt 40 angeordnet ist, eine Begrenzung bilden. Zur Einstellung der Position des Gehäuses 2 gegenüber dem Halteabschnitt 40 ist eine Stellschraube 74 vorgesehen, die sich von außen durch eine gewindelose Durchgangsöffnung 76 in dem Referenzelement 68 hindurcherstreckt und in einen Außengewindeabschnitt 78 innerhalb des Gehäuses 2 eingeschraubt ist. Die Stellschraube 74 ist bezüglich der gewindelosen Durchgangsöffnung 76 in dem Referenzelement 68 drehbar, und sie ist mittels einer Ringscheibe und einer Zahnfederscheibe in axialer Richtung mit dem Referenzelement derart gekoppelt, daß bei Einschrauben oder Ausschrauben der Stellschraube 74 in bzw. aus dem Gewindeabschnitt 78 das Gehäuse 2 in Richtung auf das Referenzelement 68 bzw. von diesem weg in Richtung auf den Anschlag 70 der Hülse 72 bewegt wird. Auf diese Weise läßt sich eine Feineinstellung der Entfernung des Schneidabschnitts 14 von dem Druckkopf der Druckeinheit 10 erreichen. Das Gehäuse 2 ist dabei im wesentlichen spielfrei auf den Bolzen 52 geführt und durch die von Referenzelement 68, Stellschraube 74 und Tnnengewindeabschnitt 78 gebildete Verstelleinrichtung 80 einstellbar.The holding section 40 furthermore has two parallel, in On the housing 2 projecting bolts 52 on via front threaded holes 54 and screws 56 on the Holding section 40 are attached. Hold the bolts 52 and guide the housing 2. For this purpose, the housing 2 Through openings 60 are provided through which the Pin 52 extend through when the housing 2 on this is postponed. The ones reaching through the housing Free ends 62 of the bolts 52 are on the front Tapped holes 64 and screws 66 with a plate-shaped Reference element 68 connected. The housing 2 is on the bolt 52 slidably mounted, the one hand Reference element 68 and on the other one an axial Stop 70 forming sleeve 72, which on a bolt 52nd pushed and between the housing 2 and the holding portion 40 is arranged to form a boundary. To set the Position of the housing 2 relative to the holding portion 40 is a set screw 74 is provided which extends from the outside a threadless through hole 76 in the reference element 68 extends through and into an external thread section 78 is screwed into the housing 2. The set screw 74 is in relation to the unthreaded through opening 76 Reference element 68 rotatable, and it is by means of a Washer and a toothed spring washer in the axial direction coupled to the reference element so that when screwing in or unscrewing the set screw 74 in or out of Threaded section 78, the housing 2 towards the Reference element 68 or away from this in the direction of the Stop 70 of the sleeve 72 is moved. That way a fine adjustment of the distance of the cutting section 14 from the print head of the printing unit 10. The Housing 2 is essentially free of play on the bolt 52 guided and by the of reference element 68, adjusting screw 74 and internal thread section 78 formed adjusting device 80 adjustable.

Claims (14)

  1. A cutting mechanism for a traveling flat material web, in particular for the production of labels, wherein the cutting mechanism includes an entrance section (12), a cutter section (14), an exit section (16), as well as a damping device (24) associated with the entrance section (12) and arranged on the side close to the flat material web, characterized in that the damping device (24) is formed by a damping plate or a piece of damping metal (26) to take up and damp any shock waves occurring in the flat material web as a result of the cutting action.
  2. The cutting mechanism as claimed in claim 1, characterized in that the damping plate or the piece of damping metal (26) is of a bent configuration.
  3. The cutting mechanism as claimed in claim 1 or 2, characterized in that the damping plate or the piece of damping metal (26) is pivotally arranged and deflectable by shock waves occurring in the flat material web.
  4. The cutting mechanism as claimed in at least one of the preceding claims, characterized in that the damping device (24) is biased in the direction of the flat material web.
  5. The cutting mechanism as claimed in claim 4, characterized in that the biasing force of the damping device (24) is adjustable.
  6. The cutting mechanism as claimed in claim 5, characterized in that the adjustability of the biasing force of the damping device (24) is accomplished by making provision for various positions of a leg (36) of a spring (32).
  7. The cutting mechanism as claimed in at least one of the preceding claims, characterized in that the damping device (24) serves at the same time the function of a guiding means.
  8. The cutting mechanism as claimed in at least one of the preceding claims, characterized in that the entrance section (12) has an insertion slot (30) tapering in the feeding direction and bounded on at least one side by the damping plate or the piece of damping metal (26).
  9. The cutting mechanism as claimed in claim 8, characterized in that the insertion slot (30) is bounded by a guide surface (28) on the side opposite the damping plate or the piece of damping metal (26).
  10. The cutting mechanism as claimed in claim 9, characterized in that the damping plate or the piece of damping metal (26) rests on the guide surface (28).
  11. The cutting mechanism as claimed in claim 10, characterized in that the damping plate or the piece of damping metal (26) rests on the guide surface (28) through the intermediary of lateral spacers (38).
  12. The cutting mechanism as claimed in at least one of the claims 8 to 11, characterized in that the clear opening of the insertion slot (30) has its minimum extent in a direction transverse to the plane of the web, said extent being slightly greater than the thickness of the web.
  13. The cutting mechanism as claimed in claim 12, characterized in that the damping plate or the piece of damping metal (26) has a minimum relative distance to the guide surface of 0.35 mm to 2 mm, preferably of 0.5 mm to 1 mm.
  14. The cutting mechanism as claimed in any one of the claims 1 to 13, characterized in that it is adapted to be coupled with a printer unit.
EP96117476A 1995-11-06 1996-10-31 Cutting device for webs of flat material Expired - Lifetime EP0771624B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19541104 1995-11-06
DE1995141104 DE19541104C1 (en) 1995-11-06 1995-11-06 Continuous material web cutting device for producing tickets

Publications (3)

Publication Number Publication Date
EP0771624A2 EP0771624A2 (en) 1997-05-07
EP0771624A3 EP0771624A3 (en) 1998-02-18
EP0771624B1 true EP0771624B1 (en) 2000-01-05

Family

ID=7776601

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96117476A Expired - Lifetime EP0771624B1 (en) 1995-11-06 1996-10-31 Cutting device for webs of flat material

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EP (1) EP0771624B1 (en)
DE (3) DE19549432C2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8524320B1 (en) 2002-08-28 2013-09-03 Pipe Restoration Technologies, Llc Process for coating the interior surface of water service lines
US7160574B1 (en) 2002-08-28 2007-01-09 Pipe Restoration Technologies, Llc Barrier coating corrosion control methods and systems for interior piping systems
US7858149B2 (en) 2002-08-28 2010-12-28 Pipe Restoration Technologies, Llc Methods and systems for coating and sealing inside piping systems
CN112318605B (en) * 2020-10-28 2023-12-22 上海金标生物科技有限公司 Percolating membrane cutting and conveying device and method

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1357644A (en) * 1917-04-27 1920-11-02 Cottrell C B & Sons Co Cutting and folding machine
US2764087A (en) * 1952-07-15 1956-09-25 Harris Seybold Co Web support for printing press
US3856196A (en) 1973-01-26 1974-12-24 Moore Business Forms Inc Capstan detacher
US4693151A (en) 1985-01-09 1987-09-15 Monarch Marking Systems, Inc. Cutting method and apparatus for stacker
CA1283348C (en) * 1986-01-09 1991-04-23 Bruce E. Taylor Tag banding apparatus
DE4034252A1 (en) * 1990-10-27 1992-04-30 Goebel Gmbh Maschf SUPPORT DEVICE
DE9105290U1 (en) * 1991-04-30 1991-07-04 Dienes Werke Fuer Maschinenteile Gmbh & Co Kg, 5063 Overath, De

Also Published As

Publication number Publication date
DE59604105D1 (en) 2000-02-10
DE59604750D1 (en) 2000-04-27
EP0771624A3 (en) 1998-02-18
EP0771624A2 (en) 1997-05-07
DE19549432A1 (en) 1997-05-07
DE19549432C2 (en) 2002-02-28

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