EP0021388B1 - Apparatus for cutting vertical paper webs - Google Patents

Apparatus for cutting vertical paper webs Download PDF

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Publication number
EP0021388B1
EP0021388B1 EP80103517A EP80103517A EP0021388B1 EP 0021388 B1 EP0021388 B1 EP 0021388B1 EP 80103517 A EP80103517 A EP 80103517A EP 80103517 A EP80103517 A EP 80103517A EP 0021388 B1 EP0021388 B1 EP 0021388B1
Authority
EP
European Patent Office
Prior art keywords
cutting
paper
carriage
guide
paper guide
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
Application number
EP80103517A
Other languages
German (de)
French (fr)
Other versions
EP0021388A1 (en
Inventor
Miroslav Dipl.-Ing. Smoravek
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.)
Siemens AG
Original Assignee
Siemens AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Siemens AG filed Critical Siemens AG
Publication of EP0021388A1 publication Critical patent/EP0021388A1/en
Application granted granted Critical
Publication of EP0021388B1 publication Critical patent/EP0021388B1/en
Expired legal-status Critical Current

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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
    • B26D7/00—Details of apparatus for cutting, cutting-out, stamping-out, punching, perforating, or severing by means other than cutting
    • B26D7/01—Means for holding or positioning work
    • B26D7/02—Means for holding or positioning work with clamping means
    • B26D7/025—Means for holding or positioning work with clamping means acting upon planar surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26D—CUTTING; DETAILS COMMON TO MACHINES FOR PERFORATING, PUNCHING, CUTTING-OUT, STAMPING-OUT OR SEVERING
    • B26D1/00—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor
    • B26D1/01—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work
    • B26D1/12—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis
    • B26D1/14—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter
    • B26D1/20—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with a fixed member
    • B26D1/205—Cutting through work characterised by the nature or movement of the cutting member or particular materials not otherwise provided for; Apparatus or machines therefor; Cutting members therefor involving a cutting member which does not travel with the work having a cutting member moving about an axis with a circular cutting member, e.g. disc cutter coacting with a fixed member for thin material, e.g. for sheets, strips or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/66—Applications of cutting devices
    • B41J11/70—Applications of cutting devices cutting perpendicular to the direction of paper feed
    • 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
    • B26D2007/0012—Details, accessories or auxiliary or special operations not otherwise provided for
    • B26D2007/0087—Details, accessories or auxiliary or special operations not otherwise provided for for use on a desktop
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2027—Initiated by means directly responsive to tool movement
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/202—With product handling means
    • Y10T83/2092—Means to move, guide, or permit free fall or flight of product
    • Y10T83/2198—Tiltable or withdrawable support
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/222—With receptacle or support for cut product
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/566—Interrelated tool actuating means and means to actuate work immobilizer
    • Y10T83/5669—Work clamp
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/566—Interrelated tool actuating means and means to actuate work immobilizer
    • Y10T83/5669—Work clamp
    • Y10T83/576—Clamp actuating means driven by tool or tool support
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/748—With work immobilizer
    • Y10T83/7487—Means to clamp work
    • Y10T83/7493—Combined with, peculiarly related to, other element
    • Y10T83/7507—Guide for traveling cutter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/768—Rotatable disc tool pair or tool and carrier
    • Y10T83/7751—Means to separate elements of tool pair
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/869—Means to drive or to guide tool
    • Y10T83/8821—With simple rectilinear reciprocating motion only
    • Y10T83/8822—Edge-to-edge of sheet or web [e.g., traveling cutter]

Definitions

  • the invention relates to a device for cutting vertical paper webs with a cutting wheel, which is arranged in a cutting carriage movable transversely to the paper web, and which runs along a cutting edge during the movement of the cutting carriage, over which the paper web is guided.
  • Cut-off devices for paper webs in which a cutting wheel along a cutting edge designed as a counter-cutting edge perform the cutting process by moving a carriage, are known (DE-CU 78 12 759, DE-A-26 55 832).
  • a device for cutting vertical paper webs is also known (FR-A-23 07 658), in which a link guide is also provided for pressing on a paper holding element, which is actuated by the cutting carriage and presses the paper against the cutting edge by means of a pressure roller.
  • An additional paper guide above the cutting point makes it easier to pick up the paper web deposited when cutting.
  • the paper routing must also take the various operating cases into account. Practically, this means that the paper guide must be reversible in two positions depending on the operating mode, which requires an additional control mechanism.
  • the paper guide which in these cases is a kind of switch, must have a gap through which the cutting knife or the cutting wheel can be brought to the paper. Such a gap-like opening makes it difficult to insert single forms, load continuous paper and transport paper.
  • the paper guide is open in the operating position provided for cutting continuous paper in the direction of a paper tray, which leads to the paper not being guided exactly and e.g. B. takes a very shallow angle with respect to the cutting edge. This has an unfavorable effect especially when cutting thin or perforated paper.
  • the object of the invention is to provide a cutting device which does not require any particular control for the various operating cases, which always ensures a gapless and secure paper guidance of the paper to be printed, and which enables problem-free paper insertion and problem-free paper transport. This object is achieved in accordance with the characterizing part of claim 1.
  • the paper guide can be pivoted above the cutting edge and is controlled via the movement of the cutting carriage along the cutting edge, an additional control is not necessary.
  • the paper is not only within the paper guide not only during the transport and printing process but also during the cutting process, which has an advantageous effect on the actual cutting process, particularly in the case of soft or thin paper qualities or when cutting via the perforation of a folding paper.
  • the basic position of the cutting device is described first with reference to FIGS. 1 and 2, i. H. the position in which the cutting carriage is located before or after a cutting process during printing and during paper transport.
  • the cutting device contains a cutting carriage 3, which is movable along a push rod 2 attached to a frame 1.
  • a link 6 is also pivotally mounted on the bolt 7, on which a paper guide 4, 5 is fastened.
  • One end 5 of the paper guide 4, 5 is designed as a stop against which a pivotably movable flap 10 bears.
  • the cutting carriage 3 contains a cutting wheel 11 which is mounted together with a pressure roller 12 on an axis 15 on which a compression spring 13 is also arranged.
  • the compression spring 13 serves to press the cutting wheel 11 against the cutting edge 16.
  • the axis 15 is supported on one side on a fork 17, namely on the lower side in an elongated hole.
  • a torsion spring 18 is attached to the fork 17. Furthermore, a guide roller 14 mounted on the cutting carriage 3 is provided, which is guided along the link 6 when the cutting carriage 3 moves and thereby brings the paper guide 4, 5 into the position required for the cutting process.
  • Fig. 1 and . Fig. 2 shown basic paper guide 4, 5 is pressed under the action of two tension springs 8 against stops 9 and held in this position. The flap 10 together with the stop 4 of the paper guide forms a complete guide area.
  • a cutting process which is triggered, for example, by a control pulse, causes the cutting carriage 3 to move along the push rod 2 and thus transversely to the inserted paper from the basic position.
  • FIGS. 3 and 4 in which this position is shown.
  • the guide roller 14 is guided along the link 6, which means that the guide roller 14 runs onto the link 6 and pivots it together with the paper guide 4, 5 firmly attached to it in the direction of the paper tray 19 .
  • the flap 10 is gripped by the pressure roller 12 and pressed against the cutting edge 16 which acts as a knife.
  • the flap 10 serves as a paper hold-down device in this position, it is ensured that the paper to be cut lies tightly against the cutting edge directly at the cutting point, which considerably improves the cutting process by the cutting wheel 11; at the same time, the paper located therein is guided out towards the paper tray 19 via the paper guide 4, 5 which has now been pivoted away.
  • the compression spring 13 ensures that the cutting wheel 11 is securely pressed onto the cutting edge 16.
  • the pressure roller 12 is pressed against the cutting edge 16 by the torsion spring 13. This position remains unchanged during the cutting process. After completion of a cutting process, the cut paper falls into the tray 19.
  • the cutting carriage 3 returns to the rest position described in FIGS. 1 and 2, and the link 6 is under the action of the two tension springs 8 up to the stops 9, which determine the basic position of the paper guide 4, 5, pivoted back.

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  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Handling Of Sheets (AREA)

Description

Die Erfindung betrifft eine Vorrichtung zum Abschneiden vertikaler Papierbahnen mit einem Schneiderad, das in einem quer zur Papierbahn beweglichen Schneidewagen angeordnet ist, und das bei der Bewegung des Schneidewagens an einer Schneidekante entlang läuft, über die die Papierbahn geführt ist.The invention relates to a device for cutting vertical paper webs with a cutting wheel, which is arranged in a cutting carriage movable transversely to the paper web, and which runs along a cutting edge during the movement of the cutting carriage, over which the paper web is guided.

Für eine Reihe von Anwendungsfällen, in denen Drucker als Ausgabegeräte eingesetzt werden, wird der Druck und die Ausgabe sowohl von Einzelformularen als auch von Endlospapier gefordert. Für den zuletzt erwähnten Fall ist es notwendig, das Endlospapier nach dem Bedrucken abzuschneiden und auf eine Ablagevorrichtung abzuwerfen. Derartige Vorrichtungen sollen ohne die Mithilfe einer Bedienungsperson sicher arbeiten. Abschneidevorrichtungen für Papierbahnen, bei denen durch Bewegung eines Schlittens ein Schneiderad entlang einer als Gegenschneide ausgebildeten Schneidekante den Abtrennvorgang durchführen, sind bekannt (DE-CU 78 12 759, DE-A-26 55 832).For a number of applications in which printers are used as output devices, printing and output of both single forms and continuous paper is required. In the latter case, it is necessary to cut off the continuous paper after printing and to drop it on a storage device. Such devices should work safely without the help of an operator. Cut-off devices for paper webs, in which a cutting wheel along a cutting edge designed as a counter-cutting edge perform the cutting process by moving a carriage, are known (DE-CU 78 12 759, DE-A-26 55 832).

Es ist auch eine Vorrichtung zum Abschneiden vertikaler Papierbahnen bekannt (FR-A-23 07 658), bei der für das Andrücken eines Papierfesthalteelementes auch eine Kulissenführung vorgesehen ist, die durch den Schneidewagen betätigt wird und mittels einer Andruckrolle das Papier an die Schneidekante andrückt. Eine zusätzliche Papierführung oberhalb der Schneidestelle erleichtert dabei das Aufnehmen der beim Abschneiden abgelegten Papierbahn. Wenn diese bekannte Vorrichtung in Druckvorrichtungen eingesetzt werden soll, mit denen sowohl Endlospapier als auch Einzelformulare bedruckt werden, können jedoch Probleme mit der Papierführung auftreten. In diesem Fall muß auch die Papierführung den verschiedenen Betriebsfällen Rechnung tragen. Praktisch bedeutet das, daß die Papierführung je nach Betriebsart in zwei Stellungen umsteuerbar sein muß, was einen zusätzlichen Steuermechanismus erfordert. Dabei muß die Papierführung, die in diesen Fällen eine Art Weiche darstellt, einen Spalt aufweisen, durch den das Schneidemesser oder das Schneiderad an das Papier herangeführt werden kann. Eine solche spaltförmige Öffnung erschwert das Einführen von Einzelformularen, das Einlegen von Endlospapier sowie den Papiertransport.A device for cutting vertical paper webs is also known (FR-A-23 07 658), in which a link guide is also provided for pressing on a paper holding element, which is actuated by the cutting carriage and presses the paper against the cutting edge by means of a pressure roller. An additional paper guide above the cutting point makes it easier to pick up the paper web deposited when cutting. If this known device is to be used in printing devices with which both continuous paper and individual forms are printed, problems with the paper guidance can occur. In this case, the paper routing must also take the various operating cases into account. Practically, this means that the paper guide must be reversible in two positions depending on the operating mode, which requires an additional control mechanism. The paper guide, which in these cases is a kind of switch, must have a gap through which the cutting knife or the cutting wheel can be brought to the paper. Such a gap-like opening makes it difficult to insert single forms, load continuous paper and transport paper.

Weiterhin ist bei den bekannten Anordnungen die Papierführung in der zum Schneiden von Endlospapier vorgesehenen Betriebsstellung in Richtung zu einer Papierablage offen, was dazu führt, daß das Papier nicht exakt geführt wird und z. B. einen sehr flachen Winkel gegenüber der Schneidekante einnimmt. Vor allem beim Schneiden von dünnem oder perforiertem Papier wirkt sich das ungünstig aus.Furthermore, in the known arrangements, the paper guide is open in the operating position provided for cutting continuous paper in the direction of a paper tray, which leads to the paper not being guided exactly and e.g. B. takes a very shallow angle with respect to the cutting edge. This has an unfavorable effect especially when cutting thin or perforated paper.

Aufgabe der Erfindung ist es, eine Schneidevorrichtung anzugeben, die für die verschiedenen Betriebsfälle keine besondere Ansteuerung erfordert, die dabei stets eine lückenlose und sichere Papierführung des zu bedruckenden Papieres gewährleistet, und die ein problemloses Papiereinlegen sowie einen einwandfreien Papiertransport ermöglicht. Diese Aufgabe wird gemäß dem kennzeichnenden Teil des Anspruches 1 gelöst.The object of the invention is to provide a cutting device which does not require any particular control for the various operating cases, which always ensures a gapless and secure paper guidance of the paper to be printed, and which enables problem-free paper insertion and problem-free paper transport. This object is achieved in accordance with the characterizing part of claim 1.

Da bei der erfindungsgemäßen Vorrichtung die Papierführung oberhalb der Schneidekante schwenkbar ist, und über die Bewegung des Schneidewagens entlang der Schneidekante gesteuert wird, entfällt eine zusätzliche Steuerung. Das Papier befindet sich nicht nur während des Transportes und des Druckvorganges sondern auch während des Schneidevorganges stets innerhalb der Papierführung, was sich für den eigentlichen Schneidevorgang insbesondere bei weichen oder dünnen Papierqualitäten bzw. beim Schneiden über die Perforation eines Faltpapieres vorteilhaft auswirkt.Since in the device according to the invention the paper guide can be pivoted above the cutting edge and is controlled via the movement of the cutting carriage along the cutting edge, an additional control is not necessary. The paper is not only within the paper guide not only during the transport and printing process but also during the cutting process, which has an advantageous effect on the actual cutting process, particularly in the case of soft or thin paper qualities or when cutting via the perforation of a folding paper.

Weitere Ausgestaltungen der Erfindung sind in den Unteransprüchen gekennzeichnet.Further refinements of the invention are characterized in the subclaims.

Die Erfindung wird im folgenden anhand eines in den Zeichnungen dargestellten Ausführungsbeispieles näher beschrieben. Dabei zeigen

  • Figuren 1 und 2 die Vorrichtung in einer Grundstellung und
  • Figuren 3 und 4 die Vorrichtung in der Betriebsstellung, während der ein Schneidevorgang stattfindet.
The invention is described below with reference to an embodiment shown in the drawings. Show
  • Figures 1 and 2, the device in a basic position and
  • Figures 3 and 4, the device in the operating position, during which a cutting process takes place.

Anhand von Fig. 1 und Fig. 2 wird zunächst die Grundstellung der Abschneidevorrichtung beschrieben, d. h. diejenige Stellung, in der sich der Schneidewagen vor oder nach einem Schneidevorgang während des Druckens sowie während des Papiertransportes befindet.The basic position of the cutting device is described first with reference to FIGS. 1 and 2, i. H. the position in which the cutting carriage is located before or after a cutting process during printing and during paper transport.

Die Abschneidevorrichtung enthält einen Schneidewagen 3, der längs einer an einem Rahmen 1 befestigten Schiebestange 2 bewegbar ist. Am Rahmen 1 ist auf Bolzen 7 weiterhin eine Kulisse 6 schwenkbar gelagert, auf der eine Papierführung 4, 5 befestigt ist. Das eine Ende 5 der Papierführung 4, 5 ist als ein Anschlag ausgebildet, an den eine schwenkbar bewegliche Klappe 10 anliegt. Der Schneidewagen 3 enthält ein Schneiderad 11, das zusammen mit einer Andruckrolle 12 auf einer Achse 15 gelagert ist, auf der auch noch eine Druckfeder 13 angeordnet ist. Die Druckfeder 13 dient dazu, das Schneiderad 11 gegen die Schneidekante 16 anzudrücken. Die Achse 15 ist an einer Gabel 17 einseitig und zwar an der unteren Seite in einem Langloch gelagert. Das ermöglicht eine Kippbewegung der Achse 15 parallel zur Schneiderichtung, wobei das Schneiderad 11 in jeder Richtung eines Schneidevorganges eine optimale Stellung einnimmt. An der Gabel 17 ist eine Drehfeder 18 befestigt. Weiterhin ist eine am Schneidewagen 3 gelagerte Führungsrolle 14 vorgesehen, die bei der Bewegung des Schneidewagens 3 entlang der Kulisse 6 geführt wird und dabei die Papierführung 4, 5 in die für den Schneidevorgang notwendige Stellung bringt. In der in Fig. 1 und . Fig. 2 dargestellten GrundsteHung wird die Papierführung 4, 5 unter der Wirkung von zwei Zugfedern 8 gegen Anschläge 9 gedrückt und in dieser Stellung festgehalten. Dabei bildet die Klappe 10 zusammen mit dem Anschlag 4 der Papierführung einen lückenlosen Führungsbereich.The cutting device contains a cutting carriage 3, which is movable along a push rod 2 attached to a frame 1. On the frame 1, a link 6 is also pivotally mounted on the bolt 7, on which a paper guide 4, 5 is fastened. One end 5 of the paper guide 4, 5 is designed as a stop against which a pivotably movable flap 10 bears. The cutting carriage 3 contains a cutting wheel 11 which is mounted together with a pressure roller 12 on an axis 15 on which a compression spring 13 is also arranged. The compression spring 13 serves to press the cutting wheel 11 against the cutting edge 16. The axis 15 is supported on one side on a fork 17, namely on the lower side in an elongated hole. This enables a tilting movement of the axis 15 parallel to the cutting direction, the cutting wheel 11 assuming an optimal position in every direction of a cutting process. A torsion spring 18 is attached to the fork 17. Furthermore, a guide roller 14 mounted on the cutting carriage 3 is provided, which is guided along the link 6 when the cutting carriage 3 moves and thereby brings the paper guide 4, 5 into the position required for the cutting process. In the in Fig. 1 and . Fig. 2 shown basic paper guide 4, 5 is pressed under the action of two tension springs 8 against stops 9 and held in this position. The flap 10 together with the stop 4 of the paper guide forms a complete guide area.

Ein Schneidevorgang, der beispielsweise durch einen Steuerimpuls ausgelöst wird, führt dazu, daß sich der Schneidewagen 3 längs der Schiebestange 2 und somit quer zum eingelegten Papier aus der Grundstellung heraus bewegt. Zur Erläuterung der dabei ablaufenden Vorgänge wird auf Fig. 3 und Fig. 4 verwiesen, in der diese Stellung dargestellt ist. Bei der Bewegung des Schneidewagens 3 aus der Grundstellung wird die Führungsrolle 14 entlang der Kulisse 6 geführt, was bedeutet, daß die Führungsrolle 14 auf die Kulisse 6 aufläuft und diese zusammen mit der auf ihr fest angebrachten Papierführung 4, 5 in Richtung der Papierablage 19 verschwenkt. Gleichzeitig wird die Klappe 10 von der Andruckrolle 12 erfaßt und an die als Messer wirkende Schneidekante 16 angedrückt. Da die Klappe 10 in dieser Stellung als Papierniederhalter dient, ist sichergestellt, daß das abzuschneidende Papier unmittelbar an der Abschneidestelle fest an der Schneidekante anliegt, was den Schneidevorgang durch das Schneiderad 11 erheblich verbessert ; zugleich wird über die jetzt abgeschwenkte Papierführung 4, 5 das sich darin befindliche Papier in Richtung auf die Papierablage 19 herausgeführt. Der sichere Andruck des Schneiderades 11 an die Schneidekante 16 ist durch die Druckfeder 13 gewährleistet. Zugleich wird auch die Andruckrolle 12 durch die Drehfeder 13 an die Schneidekante 16 angedrückt. Diese Stellung bleibt während des Schneidevorganges unverändert aufrechterhalten. Nach Beendigung eines Schneidevorganges fällt das abgeschnittene Papier in die Ablage 19. Zugleich nimmt der Schneidewagen 3 wieder die in Fig. 1 und Fig. 2 beschriebene Ruhestellung ein, und die Kulisse 6 wird unter der Einwirkung der beiden Zugfedern 8 bis zu den Anschlägen 9, die die Grundstellung der Papierführung 4, 5 bestimmen, zurückgeschwenkt.A cutting process, which is triggered, for example, by a control pulse, causes the cutting carriage 3 to move along the push rod 2 and thus transversely to the inserted paper from the basic position. For an explanation of the processes taking place, reference is made to FIGS. 3 and 4, in which this position is shown. When the cutting carriage 3 moves from the basic position, the guide roller 14 is guided along the link 6, which means that the guide roller 14 runs onto the link 6 and pivots it together with the paper guide 4, 5 firmly attached to it in the direction of the paper tray 19 . At the same time, the flap 10 is gripped by the pressure roller 12 and pressed against the cutting edge 16 which acts as a knife. Since the flap 10 serves as a paper hold-down device in this position, it is ensured that the paper to be cut lies tightly against the cutting edge directly at the cutting point, which considerably improves the cutting process by the cutting wheel 11; at the same time, the paper located therein is guided out towards the paper tray 19 via the paper guide 4, 5 which has now been pivoted away. The compression spring 13 ensures that the cutting wheel 11 is securely pressed onto the cutting edge 16. At the same time, the pressure roller 12 is pressed against the cutting edge 16 by the torsion spring 13. This position remains unchanged during the cutting process. After completion of a cutting process, the cut paper falls into the tray 19. At the same time, the cutting carriage 3 returns to the rest position described in FIGS. 1 and 2, and the link 6 is under the action of the two tension springs 8 up to the stops 9, which determine the basic position of the paper guide 4, 5, pivoted back.

Claims (4)

1. A device for cutting vertical paper webs guided across a paper guide (4, 5) by means of a cutting wheel (11) arranged in a cutting carriage (3) movable transversely to the paper web, and which cutting wheel runs along a cutting edge (16), over which the paper web is guided, during the movement of the cutting carriage (3), characterised in that the paper guide (4, 5) is firmly connected to a connecting member (6) which presses against stops (9) by means of spring elements (8) in the normal position of the cutting carriage (3) and which can be swivelled together with the paper guide in the direction of a paper support (9) by means of a guide roller (14) which is positioned in the cutting carriage (3) during a movement of the cutting carriage (3), and that the section (5) of the paper guide (4, 5) which lies in front of the cutting wheel (11) in the normal position is designed as a stop for a pivoted flap (10) which acts together with the paper guide (4, 5) to form a continuous paper guidance during the normal position, and which is pressed against the cutting edge (16) by means of a pressure roller (12) positioned in the cutting carriage (3) during a movement of the cutting carriage (3).
2. A device as claimed in Claim 1, characterised in that the pressure roller (12) and the cutting wheel (11) are positioned on an axle (15) which is fixed in an oblong hole at a fork (17) arranged in the cutting carriage (3).
3. A device as claimed in Claim 1 and 2, characterised in that a pressure spring (13), which presses the cutting wheel (11) against the cutting edge (16), is arranged on the axle (15).
4. A device as claimed in one of Claims 1 to 3, characterised in that a rotary spring (18), which presses the stop roller (12) against the cutting edge (14), is arranged on the fork (17).
EP80103517A 1979-06-27 1980-06-23 Apparatus for cutting vertical paper webs Expired EP0021388B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2925936 1979-06-27
DE2925936A DE2925936C2 (en) 1979-06-27 1979-06-27 Device for cutting vertical paper webs

Publications (2)

Publication Number Publication Date
EP0021388A1 EP0021388A1 (en) 1981-01-07
EP0021388B1 true EP0021388B1 (en) 1983-05-11

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EP80103517A Expired EP0021388B1 (en) 1979-06-27 1980-06-23 Apparatus for cutting vertical paper webs

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US (1) US4313359A (en)
EP (1) EP0021388B1 (en)
DE (1) DE2925936C2 (en)

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US4525088A (en) * 1983-08-22 1985-06-25 Ncr Corporation Compact rotary knife mechanism
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DE4110233A1 (en) * 1991-03-28 1992-10-01 Data Techno Gmbh Cutting unit for printer paper after printing - has circular cutter moved along guide bar with cutting edge moving relative to bar
US5611253A (en) * 1993-09-07 1997-03-18 Tohoku Ricoh Co., Ltd. Cutting device
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Also Published As

Publication number Publication date
EP0021388A1 (en) 1981-01-07
DE2925936C2 (en) 1981-05-21
US4313359A (en) 1982-02-02
DE2925936B1 (en) 1980-10-02

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