EP0654433A1 - Device for preventing damages by web breakage - Google Patents

Device for preventing damages by web breakage Download PDF

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Publication number
EP0654433A1
EP0654433A1 EP94117998A EP94117998A EP0654433A1 EP 0654433 A1 EP0654433 A1 EP 0654433A1 EP 94117998 A EP94117998 A EP 94117998A EP 94117998 A EP94117998 A EP 94117998A EP 0654433 A1 EP0654433 A1 EP 0654433A1
Authority
EP
European Patent Office
Prior art keywords
guide roller
web
web guide
driving part
speed
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP94117998A
Other languages
German (de)
French (fr)
Other versions
EP0654433B1 (en
Inventor
Volker Gerold Rauh
Karl-Heinz Anton Schneider
Helmut Holm
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.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer Albert AG
Koenig and Bauer 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
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Application filed by Koenig and Bauer Albert AG, Koenig and Bauer AG filed Critical Koenig and Bauer Albert AG
Publication of EP0654433A1 publication Critical patent/EP0654433A1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H27/00—Special constructions, e.g. surface features, of feed or guide rollers for webs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
    • B65H26/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs
    • B65H26/025—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs responsive to web breakage
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2403/00—Power transmission; Driving means
    • B65H2403/70—Clutches; Couplings
    • B65H2403/72—Clutches, brakes, e.g. one-way clutch +F204
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/13—Details of longitudinal profile
    • B65H2404/133—Limited number of active elements on common axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/16—Details of driving
    • B65H2404/161—Means for driving a roller parallely to its axis of rotation, e.g. during its rotation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/16—Details of driving
    • B65H2404/162—Details of driving containing, enclosing own driving means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/16—Details of driving
    • B65H2404/165—Details of driving braking roller
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2407/00—Means not provided for in groups B65H2220/00 – B65H2406/00 specially adapted for particular purposes
    • B65H2407/10—Safety means, e.g. for preventing injuries or illegal operations

Definitions

  • the invention relates to a device for preventing damage to production facilities with rotating cylinders, preferably rubber cylinders of web-fed rotary printing presses, according to the preamble of claim 1.
  • Such a generic device is such. B. become known from DE-PS 5 58 071.
  • a disadvantage of this device is that the conveying speed of the torn paper web is also dependent on the inertial masses of the two rollers involved. Particularly when used after an offset printing unit, it cannot be avoided that the web winds up on the blanket cylinder and printing unit damage can occur.
  • the invention has for its object to provide a device for preventing damage due to web breaks in production units, with which it is possible in a web break between two rotating clamping locations for the web, preferably two pairs of rubber cylinders of two printing units of an offset web-fed rotary printing press, the web transport the subsequent, rotating Clamping location, e.g. B. to design the first pair of rubber cylinders such that winding of the web onto the re-feeding clamping location is avoided.
  • the cylinders 4, 6 are preferably rubber cylinders of the web-fed rotary printing press.
  • Between the two clamping locations 2, 3 there is a web guide roller 9, which has the function of a pull-out roller and z. B. is mounted on a shaft 11. Through this web guide roller 9 and elastic rollers 12 set thereon with a defined force, further clamping locations 13 of the web 1 are formed. At least two, in the example shown three, of these rollers 12 are arranged on the web guide roller 9. Alternatively, a roller can be used instead of the rollers 12.
  • rollers 12 The function of the rollers 12 is described in more detail below using the example of a roller 12.
  • the roller 12 is rotatably attached to a lever 14.
  • This lever 14 is pivotable about a spindle 16 which runs parallel to the web guide roller 9 and is arranged fixed to the frame axially displaceable.
  • the lever 14 can be pivoted away from the web guide roller 9, so that a gap is formed between the roller 12 and web guide roller 9, for. B. to facilitate the retraction of the web 1.
  • the web guide roller 9 can execute a rotating movement on the shaft 11.
  • This shaft 11 is in turn rotatably supported in the frames 18, 19.
  • the shaft 11 is driven by a drive which, in the exemplary embodiment, is formed from a torque-switched clutch 21, an intermediate wheel 22, a cylinder drive wheel 23 and a drive wheel 25.
  • the web guide roller 9 is caused by frictional engagement of the clutch 24 the shaft 11 at a lower speed than that of the web guide roller 9 temporarily driven in the web direction.
  • the speed difference between the shaft 11 and the web guide roller 9 can be in the range from 0.2% to 1.5% and is preset for a selected value. This ensures that the re-conveyed end of the torn web 1 is transported through the web guide roller 9 and pair of cylinders 7, 8 in the direction of the clamping location 13 until the cylinders 7, 8 have come to a standstill.
  • the torque-switched coupling 21 releases the connection between the shaft 11 and the power input z when a defined torque is exceeded.
  • the clutch 21 is a non-positive clutch z. B. disc friction clutch.
  • Fig. 3 shows an embodiment of a directional clutch 24 in the form of a pinch roller freewheel.
  • the driving part 26 which is in the form of a driver star, moves at a lower speed than the driven ring 27 and thus as the web guide roller 9, the pinch rollers 28 are pressed in the direction of the springs 29. If the speed of the driving part 26 is greater than that of the driven ring 27, a wedge surface 31 and the driven ring 27 in connection with the pinch rollers 28 create a frictional connection between the shaft 11 and Web guide roller 9 generated. This is the case when the web speed at the clamping location 13 is lower than at the clamping location 2.
  • the web guide roller 9 can, for example, be mounted on the frames 18, 19 and the coupling 24 can be fastened outside the frame 19 to a shaft end rigidly connected to the web guide roller 9.
  • the drive 22, 23, 25 shown could also be carried out by a speed-controlled drive (electrical, pneumatic, hydraulic), which drives its setpoint z. B. from a coupled with one of the cylinders 7, 8 speed sensor z. B. receives encoder.
  • a speed-controlled drive electrical, pneumatic, hydraulic

Landscapes

  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Replacement Of Web Rolls (AREA)

Abstract

Eine Einrichtung zum Verhindern von Schäden an rotierenden Produktionseinheiten (7,8;4,6) durch gerissene Warenbahnen, sieht eine richtungsschaltende Kupplung (24) vor, die zeitweise einen Antrieb mit einer Bahnleitwalze (9) verbindet. Diese Bahnleitwalze (9) gewährleistet einen sicheren Transport der Warenbahn (1), bis die rotierenden Produktionseinheiten (7,8;4,6) stillstehen. <IMAGE>A device for preventing damage to rotating production units (7,8; 4,6) from broken webs of goods provides a direction-switching clutch (24) which temporarily connects a drive to a web guide roller (9). This web guide roller (9) ensures safe transport of the web (1) until the rotating production units (7,8; 4,6) stand still. <IMAGE>

Description

Die Erfindung betrifft eine Vorrichtung zum Verhindern von Schäden an Produktionseinrichtungen mit rotierenden Zylindern, vorzugsweise Gummizylindern von Rollenrotationsdruckmaschinen, gemäß dem Oberbegriff des Anspruches 1.The invention relates to a device for preventing damage to production facilities with rotating cylinders, preferably rubber cylinders of web-fed rotary printing presses, according to the preamble of claim 1.

Eine derartige gattungsgemäße Vorrichtung ist z. B. durch die DE-PS 5 58 071 bekanntgeworden. Nachteilig bei dieser Einrichtung ist, daß die Fördergeschwindigkeit der abgerissenen Papierbahn mit abhängig ist von den Schwungmassen der beiden beteiligten Walzen. Insbesondere bei einem Einsatz nach einem Offset-Druckwerk kann nicht vermieden werden, daß sich die Bahn auf dem Gummizylinder aufwickelt und es so zu Druckwerkschäden kommen kann.Such a generic device is such. B. become known from DE-PS 5 58 071. A disadvantage of this device is that the conveying speed of the torn paper web is also dependent on the inertial masses of the two rollers involved. Particularly when used after an offset printing unit, it cannot be avoided that the web winds up on the blanket cylinder and printing unit damage can occur.

Der Erfindung liegt die Aufgabe zugrunde, in Produktionseinheiten eine Vorrichtung zum Verhindern von Schäden durch Warenbahnrisse zu schaffen, mit der es möglich ist, bei einem Warenbahnriß zwischen zwei rotierenden Einspannorten für die Warenbahn, vorzugsweise zwei Gummizylinderpaaren zweier Druckwerke einer Offset-Rollenrotationsdruckmaschine, den Bahntransport aus den nachfördernden, rotierenden Einspannort, z. B. des ersten Gummizylinderpaares derart zu gestalten, daß ein Aufwickeln der Warenbahn auf den nachfördernden Einspannort vermieden wird.The invention has for its object to provide a device for preventing damage due to web breaks in production units, with which it is possible in a web break between two rotating clamping locations for the web, preferably two pairs of rubber cylinders of two printing units of an offset web-fed rotary printing press, the web transport the subsequent, rotating Clamping location, e.g. B. to design the first pair of rubber cylinders such that winding of the web onto the re-feeding clamping location is avoided.

Diese Aufgabe wird durch die Merkmale des kennzeichnenden Teils des Anspruchs 1 gelöst.This object is achieved by the features of the characterizing part of claim 1.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, daß ein aus den fördernden Zylindern austretendes Ende einer gerissenen Warenbahn weiter kontrolliert gefördert wird, bis die fördernden Zylinder zum Stillstand gekommen sind. Durch die Wahl einer Umdrehungsdifferenz zwischen Papierleitwalze und einer in ihr angeordneten richtungsgeschalteten Kupplung, z. B. mit Treiberstern versehener Klemmrollenfreilauf, ist es möglich, ziemlich genau zu bestimmen, um wieviele Zentimeter das abgetrennte Ende von den fördernden Zylindern max. zurückgezogen wird, bis die Vorrichtung wirkt.The advantages which can be achieved with the invention consist in particular in that an end of a torn material web emerging from the conveying cylinders is conveyed in a controlled manner until the conveying cylinders have come to a standstill. By choosing a rotation difference between the paper guide roller and a directional clutch arranged in it, e.g. B. provided with starter pinch roller freewheel, it is possible to determine fairly precisely by how many centimeters the separated end of the conveying cylinders max. withdrawn until the device operates.

Die Erfindung wird nachfolgend an einem Ausführungsbeispiel näher erläutert. In den dazugehörigen Zeichnungen zeigen

Fig. 1
eine schematische Seitenansicht der erfindungsgemäßen Vorrichtung;
Fig. 2
den schematischen Aufbau der Auszugswalze mit Antrieb sowie den in Wirkverbindung stehenden Andrückrollen;
Fig. 3
ein Ausführungsbeispiel einer richtungsgeschalteten Kupplung in Form eines Klemmrollenfreilaufes.
The invention is explained in more detail below using an exemplary embodiment. Show in the accompanying drawings
Fig. 1
a schematic side view of the device according to the invention;
Fig. 2
the schematic structure of the pull-out roller with drive and those in operative connection Pressure rollers;
Fig. 3
an embodiment of a directional clutch in the form of a pinch roller freewheel.

Eine Warenbahn 1, vorzugsweise eine Papierbahn in einer Offset-Rollenrotationsdruckmaschine, wird zwischen zwei Einspannorten 2, 3, die beispielsweise von jeweils paarweise angeordneten, rotierenden Zylindern 4, 6 bzw. 7, 8 gebildet werden, mit definierter Bahnspannung transportiert Die Zylinder 4, 6 sind vorzugsweise Gummizylinder der Rollenrotationsdruckmaschine. Zwischen den beiden Einspannorten 2, 3 befindet sich eine Bahnleitwalze 9, welche die Funktion einer Auszugswalze hat und z. B. auf einer Welle 11 gelagert ist. Durch diese Bahnleitwalze 9 und darauf mit definierter Kraft angestellten, elastischen Rollen 12 werden weitere Einspannorte 13 der Warenbahn 1 gebildet. Von diesen Rollen 12 werden mindestens zwei, im dargestellten Beispiel drei, auf der Bahnleitwalze 9 angeordnet. Alternativ kann statt den Rollen 12 eine Walze verwendet werden.A web of material 1, preferably a paper web in an offset web-fed rotary printing press, is transported with a defined web tension between two clamping locations 2, 3, which are formed, for example, by rotating cylinders 4, 6 and 7, 8 arranged in pairs, respectively. The cylinders 4, 6 are preferably rubber cylinders of the web-fed rotary printing press. Between the two clamping locations 2, 3 there is a web guide roller 9, which has the function of a pull-out roller and z. B. is mounted on a shaft 11. Through this web guide roller 9 and elastic rollers 12 set thereon with a defined force, further clamping locations 13 of the web 1 are formed. At least two, in the example shown three, of these rollers 12 are arranged on the web guide roller 9. Alternatively, a roller can be used instead of the rollers 12.

Nachfolgend wird die Funktion der Rollen 12 am Beispiel einer Rolle 12 näher beschrieben. Die Rolle 12 ist drehbar an einem Hebel 14 befestigt. Dieser Hebel 14 ist um eine Spindel 16, die parallel zur Bahnleitwalze 9 verläuft und gestellfest angeordnet ist, schwenk- und axial verschiebbar.The function of the rollers 12 is described in more detail below using the example of a roller 12. The roller 12 is rotatably attached to a lever 14. This lever 14 is pivotable about a spindle 16 which runs parallel to the web guide roller 9 and is arranged fixed to the frame axially displaceable.

Durch Beaufschlagung eines Pneumatikzylinders 17, der auf der Spindel 16 und dem Hebel 14 gelagert ist, wird eine so definierte Kraft in Richtung des Mittelpunktes der Bahnleitwalze 9 erzeugt, daß die Warenbahn 1 am Einspannort 13 sicher durch Friktion transportiert werden kann. Diese Kraft ist auch bei Abstandsveränderungen der Mittelpunkte der Rolle 12 und Bahnleitwalze 9 annähernd konstant.By acting on a pneumatic cylinder 17, which is mounted on the spindle 16 and the lever 14, a force is defined in the direction of the center of the web guide roller 9 that the web 1 can be transported safely at the clamping point 13 by friction. This force is approximately constant even with changes in the distance between the centers of the roller 12 and web guide roller 9.

Mittels des Pneumatikzylinders 17 kann der Hebel 14 von der Bahnleitwalze 9 weggeschwenkt werden, so daß zwischen Rolle 12 und Bahnleitwalze 9 ein Spalt entsteht, z. B. um das Einziehen der Warenbahn 1 zu erleichtern.By means of the pneumatic cylinder 17, the lever 14 can be pivoted away from the web guide roller 9, so that a gap is formed between the roller 12 and web guide roller 9, for. B. to facilitate the retraction of the web 1.

Die Bahnleitwalze 9 kann, wie aus Fig. 2 ersichtlich, eine rotierende Bewegung auf der Welle 11 ausführen. Diese Welle 11 ist wiederum in den Gestellen 18, 19 drehbar gelagert.As can be seen in FIG. 2, the web guide roller 9 can execute a rotating movement on the shaft 11. This shaft 11 is in turn rotatably supported in the frames 18, 19.

Die Welle 11 wird durch einen Antrieb angetrieben, der im Ausführungsbeispiel aus einer drehmomentgeschalteten Kupplung 21, einem Zwischenrad 22, einem Zylinderantriebsrad 23 und einem Antriebsrad 25 gebildet wird.The shaft 11 is driven by a drive which, in the exemplary embodiment, is formed from a torque-switched clutch 21, an intermediate wheel 22, a cylinder drive wheel 23 and a drive wheel 25.

Die Bahnleitwalze 9 wird während der Produktion (= normaler Betriebszustand) mittels Friktion von der Warenbahn 1 mit Bahngeschwindigkeit angetrieben. Durch die richtungsgeschaltete Kupplung 24 besteht während des normalen Betriebszustandes keine Kraftübertragung von Welle 11 auf Bahnleitwalze 9. Diese Kupplung 24 ermöglicht solange ein von der Welle 11 unabhängiges Drehen der Bahnleitwalze 9 bis die Drehzahl der Bahnleitwalze 9 gleich oder kleiner der der Welle 11 ist. Um die unabhängige, freie Rotation der Bahnleitwalze 9 während der Produktion zu gewährleisten, wird die Welle 11 mit einer niedrigeren Drehzahl angetrieben als die Drehzahl der Bahnleitwalze 9.The web guide roller 9 is during production (= normal operating state) driven by friction from the web 1 at web speed. Due to the directional clutch 24 there is no power transmission from shaft 11 to web guide roller 9 during normal operating state. This clutch 24 allows the web guide roller 9 to rotate independently of the shaft 11 until the speed of the web guide roller 9 is equal to or less than that of the shaft 11. In order to ensure the independent, free rotation of the web guide roller 9 during production, the shaft 11 is driven at a lower speed than the speed of the web guide roller 9.

Verringert sich die Drehzahl der Bahnleitwalze 9 durch einen Riß der Warenbahn 1 zwischen dem födernden Einspannort 2 und dem ziehenden Einspannort 3, jedoch nach dem Einspannort 13, in Form der "Auszugseinrichtung" 9, 12, wird durch Reibschluß der Kupplung 24 die Bahnleitwalze 9 von der Welle 11 mit geringerer Drehzahl als die der Bahnleitwalze 9 zeitweise in Warenbahnrichtung angetrieben. Die Drehzahldifferenz der Welle 11 zur Bahnleitwalze 9 kann im Bereich von 0,2% bis 1,5% liegen und wird für einen ausgewählten Wert fest voreingestellt. Hierdurch wird sichergestellt, daß das nachgeförderte Ende der gerissenen Warenbahn 1 durch Bahnleitwalze 9 und Zylinderpaar 7, 8 in Richtung Einspannort 13 transportiert wird, bis der Stillstand der Zylinder 7, 8 erreicht ist.If the speed of the web guide roller 9 decreases due to a tear in the web 1 between the conveying clamping location 2 and the pulling clamping location 3, but after the clamping location 13, in the form of the "pull-out device" 9, 12, the web guide roller 9 is caused by frictional engagement of the clutch 24 the shaft 11 at a lower speed than that of the web guide roller 9 temporarily driven in the web direction. The speed difference between the shaft 11 and the web guide roller 9 can be in the range from 0.2% to 1.5% and is preset for a selected value. This ensures that the re-conveyed end of the torn web 1 is transported through the web guide roller 9 and pair of cylinders 7, 8 in the direction of the clamping location 13 until the cylinders 7, 8 have come to a standstill.

Wickelt sich die Warenbahn 1 während Welle 11 und Bahnleitwalze 9 über die richtungsgeschaltete Kupplung 24 miteinander verbunden sind, um die Bahnleitwalze 9, vergrößert sich damit der wirksame Durchmesser der Bahnleitwalze 9 und damit auch die Transportgeschwindigkeit. Um ein weiteres Reißen der Warenbahn 1 zwischen den Einspannorten 2 und 13 zu vermeiden, löst die drehmomentgeschaltete Kupplung 21 bei Überschreiten eines definierten Drehmomentes die Verbindung zwischen Welle 11 und Krafteintrieb z. B. in Form des Zwischenrades 22. Dieses Drehmoment muß kleiner sein als das max. zulässige Drehmoment der Bahnleitwalze 9, was sich durch die Reißfestigkeit der Warenbahn ergibt. Die Kupplung 21 ist als kraftschlüssige Schaltkupplung z. B. Scheibenreibkupplung ausgeführt.If the web 1 wraps around the web guide roller 9 while the shaft 11 and web guide roller 9 are connected to one another via the direction-switched coupling 24, the effective diameter of the web guide roller 9 and thus the transport speed are increased. In order to avoid further tearing of the web 1 between the clamping locations 2 and 13, the torque-switched coupling 21 releases the connection between the shaft 11 and the power input z when a defined torque is exceeded. B. in the form of the idler gear 22. This torque must be less than the max. permissible torque of the web guide roller 9, which results from the tensile strength of the web. The clutch 21 is a non-positive clutch z. B. disc friction clutch.

Fig. 3 stellt ein Ausführungsbeispiel einer richtungsschaltenden Kupplung 24 in Form eines Klemmrollenfreilaufes dar.Fig. 3 shows an embodiment of a directional clutch 24 in the form of a pinch roller freewheel.

Bewegt sich das treibende Teil 26, das in Form eines Treibersternes ausgebildet ist, mit kleinerer Drehzahl als der Abtriebsring 27 und damit als die Bahnleitwalze 9, werden die Klemmrollen 28 in Richtung Federn 29 gedrückt. Wird die Drehzahl des treibenden Teiles 26 größer als die des Abtriebsringes 27, wird über Keilflächen 31 und den Abtriebsring 27 in Verbindung mit den Klemmrollen 28 ein Reibschluß zwischen Welle 11 und Bahnleitwalze 9 erzeugt. Dies ist dann der Fall, wenn die Bahngeschwindigkeit an dem Einspannort 13 geringer als am Einspannort 2 ist.If the driving part 26, which is in the form of a driver star, moves at a lower speed than the driven ring 27 and thus as the web guide roller 9, the pinch rollers 28 are pressed in the direction of the springs 29. If the speed of the driving part 26 is greater than that of the driven ring 27, a wedge surface 31 and the driven ring 27 in connection with the pinch rollers 28 create a frictional connection between the shaft 11 and Web guide roller 9 generated. This is the case when the web speed at the clamping location 13 is lower than at the clamping location 2.

In weiteren nicht dargestellten Ausführungsformen der Erfindung kann beispielsweise die Bahnleitwalze 9 an den Gestellen 18, 19 gelagert sein und die Kupplung 24 außerhalb des Gestelles 19 an einem mit der Bahnleitwalze 9 starr verbundenen Wellenende befestigt sein.In further embodiments of the invention, not shown, the web guide roller 9 can, for example, be mounted on the frames 18, 19 and the coupling 24 can be fastened outside the frame 19 to a shaft end rigidly connected to the web guide roller 9.

Auch könnte der dargestellte Antrieb 22, 23, 25 durch einen drehzahlgeregelten Antrieb (elektrisch, pneumatisch, hydraulisch) erfolgen, der seinen Sollwert z. B. von einem mit einem der Zylinder 7, 8 gekoppelten Drehzahlgeber z. B. Winkelcodierer erhält.The drive 22, 23, 25 shown could also be carried out by a speed-controlled drive (electrical, pneumatic, hydraulic), which drives its setpoint z. B. from a coupled with one of the cylinders 7, 8 speed sensor z. B. receives encoder.

TeilelisteParts list

11
WarenbahnGoods web
22nd
EinspannortClamping location
33rd
EinspannortClamping location
44th
Zylindercylinder
55
--
66
Zylindercylinder
77
Zylindercylinder
88th
Zylindercylinder
99
BahnleitwalzeWeb guide roller
1010th
--
1111
Wellewave
1212th
Rollerole
1313
EinspannortClamping location
1414
Hebellever
1515
--
1616
Spindelspindle
1717th
PneumatikzylinderPneumatic cylinder
1818th
Gestellframe
1919th
Gestellframe
2020th
--
2121
Kupplung (drehmomentgeschaltet)Clutch (torque switched)
2222
ZwischenradIdler gear
2323
ZylinderantriebsradCylinder drive wheel
2424th
Kupplung (richtungsgeschaltet)Clutch (directional)
2525th
Antriebsraddrive wheel
2626
Treibendes TeilDriving part
2727
AbtriebsringOutput ring
2828
KlemmrollenPinch rollers
2929
Federnfeathers
3030th
--
3131
KeilflächeWedge surface

Claims (11)

Vorrichtung zum Verhindern von Schäden an Produktionseinrichtungen mit rotierenden Zylindern, vorzugsweise Gummizylindern von Rollenrotationsdruckmaschinen, durch gerissene Warenbahnen, vorzugsweise bedruckte Papierbahnen, unter Anwendung von richtungsgeschalteten Kupplungen, wobei die Warenbahn eine rotierbar gelagerte Bahnleitwalze teilweise umschlingt und Andrückrollen vorgesehen sind um die Warenbahn an die Bahnleitwalze zu pressen, dadurch gekennzeichnet, daß die Bahnleitwalze (9) mittels einer richtungsgeschalteten Kupplung (24; 26, 27, 28, 29) in Warenbahnsollaufrichtung zeitweise antreibbar angeordnet ist.Device for preventing damage to production facilities with rotating cylinders, preferably rubber cylinders of web-fed rotary printing presses, by torn webs, preferably printed paper webs, using directional clutches, the web of material partially wrapping around a web guide roller mounted in a rotatable manner and pressure rollers being provided in order to feed the web to the web guide roller Press, characterized in that the web guide roller (9) is arranged to be drivable at times in the desired web direction by means of a directional clutch (24; 26, 27, 28, 29). Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß als richtungsgeschaltete Kupplung (24) ein Klemmrollenfreilauf (26, 27, 28, 29) mit einem treibenden Teil (Treiberstern) (26), einem Abtriebsring (27) und einer Mehrzahl Klemmrollen (28) vorgesehen ist.Apparatus according to claim 1, characterized in that a clamping roller freewheel (26, 27, 28, 29) with a driving part (driver star) (26), an output ring (27) and a plurality of clamping rollers (28) is provided as the directional clutch (24) is. Vorrichtung nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß die richtungsgeschaltete Kupplung im Inneren der hohlen Bahnleitwalze (9) angeordnet ist.Device according to claims 1 to 3, characterized in that the directional clutch is arranged inside the hollow web guide roller (9). Vorrichtung nach den Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß das treibende Teil (26) auf einer Welle (11) formschlüssig angeordnet ist.Device according to claims 1 to 3, characterized in that the driving part (26) is arranged in a form-fitting manner on a shaft (11). Vorrichtung nach den Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß das treibende Teil (26) der im Inneren der Bahnleitwalze (9) angeordneten richtungsgeschalteten Kupplung (24) während des normalen Betriebszustandes der Produktionseinrichtung (7, 8; 4, 6) mit einer Drehzahl jeweils antreibbar ist, die kleiner als die jeweilige Drehzahl der Bahnleitwalze (9) ist.Device according to claims 1 to 4, characterized in that the driving part (26) of the directional clutch (24) arranged inside the web guide roller (9) during the normal operating state of the production device (7, 8; 4, 6) at a speed can be driven in each case, which is smaller than the respective speed of the web guide roller (9). Vorrichtung nach den Ansprüchen 1 bis 5, dadurch gekennzeichnet, daß die Drehzahl des treibenden Teils (24) der richtungsgeschalteten Kupplung (26, 27, 28, 29 zwischen 0,2 und 1,5% kleiner ist als die Drehzahl der Bahnleitwalze (9).Device according to claims 1 to 5, characterized in that the speed of the driving part (24) of the directional clutch (26, 27, 28, 29 is between 0.2 and 1.5% less than the speed of the web guide roller (9) . Vorrichtung nach den Ansprüchen 1 bis 6, dadurch gekennzeichnet, daß der Antrieb des treibenden Teils (24) vom Antrieb der Zylinder (7, 8) her erfolgt.Device according to claims 1 to 6, characterized in that the driving part (24) is driven by the cylinder (7, 8). Vorrichtung nach den Ansprüchen 1 bis 6, dadurch gekennzeichnet, daß der Antrieb des treibenden Teils (24) mittels eines drehzahlgeregelten Motors erfolgt.Device according to claims 1 to 6, characterized in that the driving part (24) is driven by means of a speed-controlled motor. Vorrichtung nach den Ansprüchen 1 bis 8, dadurch gekennzeichnet, daß der treibende Teil (24) mittels Klemmrollen (28) und einem mit dem inneren Durchmesser der Bahnleitwalze (9) kraft- und formschlüssig verbundenen Abtriebring verbindend angeordnet ist.Device according to claims 1 to 8, characterized in that the driving part (24) is arranged so as to connect by means of clamping rollers (28) and an output ring which is connected to the inner diameter of the web guide roller (9) in a non-positive and positive manner. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß die hohle Bahnleitwalze (9) als Abtriebring (26) vorgesehen ist.Apparatus according to claim 9, characterized in that the hollow web guide roller (9) is provided as an output ring (26). Vorrichtung nach den Ansprüchen 1 bis 10, dadurch gekennzeichnet, daß zwischen Antrieb (11) des treibenden Teils (24) und einem Krafteintrieb auf den Antrieb (11) eine drehmomentschaltende Kupplung (21) vorgesehen ist.Device according to claims 1 to 10, characterized in that a torque-switching clutch (21) is provided between the drive (11) of the driving part (24) and a force input on the drive (11).
EP94117998A 1993-11-23 1994-11-15 Device for preventing damages by web breakage Expired - Lifetime EP0654433B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE4339766A DE4339766C1 (en) 1993-11-23 1993-11-23 Device for preventing damage in the case of webs of material tearing
DE4339766 1993-11-23

Publications (2)

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EP0654433A1 true EP0654433A1 (en) 1995-05-24
EP0654433B1 EP0654433B1 (en) 1997-06-11

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EP94117998A Expired - Lifetime EP0654433B1 (en) 1993-11-23 1994-11-15 Device for preventing damages by web breakage

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US (1) US5511712A (en)
EP (1) EP0654433B1 (en)
JP (1) JP2656220B2 (en)
DE (2) DE4339766C1 (en)

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EP0893382A1 (en) * 1997-07-22 1999-01-27 Heidelberger Druckmaschinen Aktiengesellschaft Device to splice material webs during roation of rolls

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Also Published As

Publication number Publication date
JP2656220B2 (en) 1997-09-24
JPH07187467A (en) 1995-07-25
EP0654433B1 (en) 1997-06-11
US5511712A (en) 1996-04-30
DE59403109D1 (en) 1997-07-17
DE4339766C1 (en) 1995-02-09

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