EP1471023B1 - Tearing device for webs of material - Google Patents

Tearing device for webs of material Download PDF

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Publication number
EP1471023B1
EP1471023B1 EP20030008666 EP03008666A EP1471023B1 EP 1471023 B1 EP1471023 B1 EP 1471023B1 EP 20030008666 EP20030008666 EP 20030008666 EP 03008666 A EP03008666 A EP 03008666A EP 1471023 B1 EP1471023 B1 EP 1471023B1
Authority
EP
European Patent Office
Prior art keywords
tearing
motor
web
pressure
tear
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
EP20030008666
Other languages
German (de)
French (fr)
Other versions
EP1471023A1 (en
Inventor
Wilfried Dr. Kolbe
Reinhold Hindemith
Andreas Kückelmann
Wolfgang Brusdeilins
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.)
Newlong Industrial Co Ltd
Original Assignee
Newlong Industrial Co Ltd
Newlong Ind Co Ltd
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 Newlong Industrial Co Ltd, Newlong Ind Co Ltd filed Critical Newlong Industrial Co Ltd
Priority to ES03008666T priority Critical patent/ES2250774T3/en
Priority to AT03008666T priority patent/ATE310701T1/en
Priority to DE50301735T priority patent/DE50301735D1/en
Priority to EP20030008666 priority patent/EP1471023B1/en
Priority to US10/820,258 priority patent/US20040211807A1/en
Publication of EP1471023A1 publication Critical patent/EP1471023A1/en
Application granted granted Critical
Publication of EP1471023B1 publication Critical patent/EP1471023B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B65H35/00—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers
    • B65H35/10—Delivering articles from cutting or line-perforating machines; Article or web delivery apparatus incorporating cutting or line-perforating devices, e.g. adhesive tape dispensers from or with devices for breaking partially-cut or perforated webs, e.g. bursters
    • 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
    • B65H2403/50—Driving mechanisms
    • B65H2403/51—Cam mechanisms
    • B65H2403/514—Cam mechanisms involving eccentric
    • 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
    • B65H2404/20—Belts
    • B65H2404/26—Particular arrangement of belt, or belts
    • B65H2404/269—Particular arrangement of belt, or belts other arrangements
    • B65H2404/2691—Arrangement of successive belts forming a transport path
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
    • B65H2515/30—Forces; Stresses
    • B65H2515/34—Pressure, e.g. fluid pressure
    • 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
    • Y10T225/00—Severing by tearing or breaking
    • Y10T225/30—Breaking or tearing apparatus
    • Y10T225/35—Work-parting pullers [bursters]

Definitions

  • the invention relates to a tear-off device for sections of a material web with a preferred movement and a tear-off according to the preamble of the claim 1.
  • tear-off devices are used, for example, in hose machines Part of a sacking line used to create a tubular web at perforated points in Separate hose sections.
  • the tube web is usually from the preferred factory transported between opposed endless conveyor belts and fed to the tear-off.
  • EP 0 227 896 is another tear-off device for hose sections known in the Abr utilizattechnik on one side of the conveyor belts three pressure rollers are stored so that they together with an eccentric disc against opposite pressure rollers can be moved.
  • the object of the invention is a tear-off of the aforementioned To create a kind whose demolition work a simpler and more solid structure of the Has adjusting.
  • the engageable pressure elements have rotatably drivable inner eccentrics, on which pressure rollers are rotatably mounted. It is at least one up a pressure roller located on a first side of the web can be adjusted. through a rotational movement can be mounted on the inner eccentric pressure roller against the opposite pressure element and the intervening Material web on or off. Alternatively, two can opposing pressure rollers against each other be adjustable.
  • the adjusting device preferably has at least one motor through which the pressure elements are driven in rotation.
  • This has the advantage, among other things, that in contrast to conventional tear-off a rigid coupling the Anstellvorganges with the transport of the web can be omitted, so that greater variability is achieved.
  • hiring a pressure element By means of a motor, the rotational movement also allows a direct implementation the engine torque or the engine power in the contact pressure of the pressure element, and it can also be done very quickly and in a controlled manner become.
  • the adjusting device further preferably has a control device for Timing of the movement of the engine. Unlike traditional ones Tear-off devices in which the time of Anstellvorganges by a Eccentric disc or another rigid mechanism is set is so a variable and precise timing of the tearing process possible.
  • the movement, for example, of a servomotor is timely with a known per se Control device exactly controllable.
  • the control device is a programmable control device, with the times of arrival and / or Abstellschulen in relation to the Transport of the material web are adjustable.
  • This has the advantage of adaptability the setting process to different operating conditions and material webs, for example, tubular webs with different tube formats, in particular different lengths of hose sections. So is one Changing the formats of the sections no conversion of the tear-off necessary.
  • the exact setting of the operating parameters for the tear-off allows also using higher machine speeds than conventional ones Tear-off devices with a rigidly fixed sequence of the tear-off process is possible.
  • the adjusting device has the at least an engine and the controller on, and the engine is over a limited adjustment drivable in opposite directions.
  • the adjustment movements of the engine are timed by the controller.
  • the programmable control device can also be the adjustment of the motor be programmable.
  • the on and off of at least one Andrukkimplantations takes place in that the engine only a small movement out and back performs.
  • the at least one engine drivable in a direction of rotation circumferentially with variable speed, and the speed of the engine can go up be variable to a stop.
  • Such movement of the engine has the advantage that lower accelerations are necessary because no reversing operation of Motors done.
  • the at least one motor is a servomotor. It is advantageous that a servo motor high torque even at the lowest speed or at standstill and can have high dynamics.
  • An exact one Position control is by a control loop with a position sensor reachable. Instead of a servo motor can also be a stepper motor or a direct drive can be provided.
  • the preferential work and the tear-off each have their own Drive up.
  • This allows an individually adjustable adjustment of the transport speeds to different types of railway.
  • the Overspeed to the transport speed of the tearing off the the preferential work surpasses, depending on the type of web for the tear-off needed measure to be adjusted.
  • the pressure element in the salaried state is also the adaptability the tear-off to the transport speed of a subsequent processing device given.
  • the adjusting means advantageously at least one displaceable Frame on which one or more of the pressure elements stored are.
  • the pressure force can be with known elastic properties of the pressure elements, the material web and any conveyor belts depending on the embodiment by varying the Determining the adjustment path of the motor or the position of the frame. This is advantageous because different types of webs, for example, different friction coefficients may have different force or to separate the Perforation may be needed.
  • the at least one frame is preferred by at least one second motor displaceable.
  • Figure 1 shows a tear-off with a Preference movement 10 and a tear-off 12.
  • the preferred movement 10 and the tear-off 12 each have upper endless conveyor belts 14 and lower endless ones Conveyor belts 16 on. Between the conveyor belts 14 and 16 is a web 18 transported.
  • the conveyor belts 14 and 16 run on pulleys 20 and are driven by drives 22 with drive control devices 24.
  • the tear-off 12 has on the upper side of the web 18 three upper pressure rollers 26, those on the lower side of the material web 18th three lower pressure rollers 26 face.
  • the pressure rollers 26 are each rotatably mounted on roller axles 28, the mounted on eccentrically mounted drive axles 30 in a frame 32 are. By means of a rotational movement of the corresponding drive axles 30 are the roller axles 28 with the pressure rollers 26 about the respective drive axle 30 swiveling.
  • the upper and lower drive axles 30 are each over Gear wheels 34 ( Figure 3) power coupled and are driven by servo motors 36.
  • the material web 18 is in a transport direction 38, which is indicated by an arrow is indicated, between the conveyor belts 14 and 16 of the tear-off 12 moves.
  • the conveyor belts 14 and 16 of Abr predominantlywerkes 12 in the Figure 1 shown position of the pressure rollers 26 not with the material web 18th in engagement, so that the transport speed of the material web 18 through the Conveyor belts 14 and 16 of the preferred factory 10 is determined.
  • the racks 32, in which the drive axles 30 are mounted are by second motors 40 in essentially displaceable perpendicular to the material web 18, wherein by the position the second motors 40, the distance of the racks 32 from each other is adjustable.
  • the motors 40 may be, for example, linear motors act.
  • the position of the servomotors 36 is with electronic control devices 42 specifically timed.
  • the control devices 42 may be, for example to act programmable controllers.
  • In every control device 42 is a control electronics 44 of a control circuit of the servomotor 36 integrated.
  • the control loop has one arranged on the servo motor 36 or there integrated position sensor 46 ( Figure 4), the position of the servomotor 36 detects. While by the controller 42 of the adjustment and the timing of the servo motor 36 is programmable, controls the control electronics 44 by means of the position sensor 46, the respective current target position the servomotor 36.
  • Figure 2 shows the tear-off of Figure 1, in which the upper and lower pressure rollers 26 are employed against each other. They are each pivoted about their drive axis 30.
  • the material web 18 detected by the conveyor belts 14 and 16 of the tear-off unit 12 between the pressure rollers 26 is separated at a performed point indicated by an arrow X because of the increased transport speed v 2 of the tear-off unit 12 compared to the transport speed v 1 of the preferential work 10. It is a material portion 48 separated, which is removed during further transport of the rest of the web 18.
  • the transport speeds v 1 can v 2 can be specified independently of one another as required via the drives 22.
  • FIG. 3 shows an enlarged detail of the tear-off unit 12 from FIG. 1. Shown here are the gears 34, with which the drive axles 30 of upper and lower pressure rollers 26 are coupled. In Figure 3 is at the top and lower frame 32 each have the right gear 34 through the servomotor 36 covered. The servomotors 36 respectively drive the drive shafts 30 of the upper or lower pressure rollers 26 at.
  • the gears 34 can for Power coupling of the drive axles 30, for example, toothed belt or other Means be provided.
  • Figure 4 shows a cross section through a lower pressure roller 26 and the associated Servomotor 36 of Figure 3, corresponding to the marked in Figure 3 Level A.
  • the pressure roller 26 is fitted with bearings 50 on the Roller shaft 28 rotatably mounted. At the ends of the roll axis 28 is eccentric each attached a portion of the drive shaft 30. Alternatively, the Roll axis 28 and the drive shaft 30 may be made in one piece.
  • the drive shaft 30 is rotatably supported in bearings 52 in the frame 32.
  • the Servomotor 36 which is held on a plate 54, not shown in Figure 3, drives the drive axle 30.
  • the position sensor 46th On the servo motor 36, the position sensor 46th arranged.
  • roller shaft 28 By means of a rotational movement of the drive shaft 30, the roller shaft 28 is in order the drive shaft 30 is pivoted.
  • the rotatably mounted on the roller shaft 28 Pressure roller 26 can be employed against the opposite pressure roller 26 become.
  • Figure 5 shows a partial section of the tear-off 12 of Figures 1 and 3 with the left two pinch rollers 26 in the parked state.
  • the roller axles 28 with the drive axles 30, the bearings 50 of the pressure rollers 26 and the racks 32 and the conveyor belts 14 and 16 with the intervening located material web 18.
  • the roller axles 28 touch the pressure rollers 26, the conveyor belts 14 and 16 not.
  • conveyor belt 14 or 16 may also be so small that the pressure roller 26 is moved by the conveyor belt and about its roll axis 28 turns.
  • Figure 6 shows the same view as Figure 5, but in which the pressure rollers 26 as in Figure 2 in a position employed on the conveyor belt 14 and 16 position are located.
  • the pressure rollers 26 were about opposing rotational movements the respective drive axes 30 of the transport direction 38 opposite pivoted.
  • the applied pressure rollers 26 are moved by the conveyor belts 14 and 16, respectively and rotate about their respective roller axis 28.
  • the distance between the drive axles 30 so small that the pressure rollers 26 before their maximum vertical deflection abut each other, so that the drive axles 30 can not make a full turn. Therefore, the shutdown occurs a pressure roller 26 by means of movement of the servo motor 36 in reverse Direction of rotation as when hiring.
  • Figure 7 shows the pressure rollers 26 also in an employed position, at However, they are deflected vertically maximally. This is made possible by that the racks 32 have a greater distance from one another than in FIG 6. In this way, an operation of the servo motor 36 with a fixed Direction of rotation possible because the drive axles 30 for stopping the pressure rollers 26 can continue to turn in the same direction as when hiring. On the one hand Thus, an extremely short period of the tearing process can be achieved by not stopping the servomotor 36. This can be for example be advantageous to brittle paper. On the other hand, by means of persistence of the roll axes 28 in the position shown in Figure 7 with salaried pressure rollers 26 also a longer period of time between turning on and off the pressure rollers 26 achievable.
  • the position shown in FIG the racks 32 are adjusted by the second motors 40.
  • the servo motor 36 is also in an operation of the servo motor 36 with a fixed direction of rotation an adjustment of the contact pressure of the pressure rollers 26 possible in the 6 already reached by means of the servomotor 36 can.
  • the pressure force of the employed pressure rollers can be in known elastic properties of the pressure rollers, the material web and any conveyor belts by varying the adjustment of the servomotor 36 or the position of the second motor 40 determine.
  • only the pressure rollers can be used 26 on one side of the web 18 to be adjustable or on a be displaced frame 32 stored.
  • the racks 32 be coupled via a coupling linkage so that they can be adjusted synchronously are.
  • each one servo motor 36 the Drive axles 30 of the lower and upper pinch rollers 26 drives is Alternatively, it is also conceivable that all drive axles 30 are coupled and driven by a servomotor 36.
  • the material web is opposite on both sides Pressure elements each arranged vertically to each other.
  • the invention also includes such arrangements in which the pressure elements on both sides of the web in the transport direction relative to each other are arranged shifted, so that the material web in employed pressure elements undulating through the tear-off device.

Landscapes

  • Auxiliary Devices For And Details Of Packaging Control (AREA)
  • Advancing Webs (AREA)
  • Basic Packing Technique (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)

Abstract

The adjustable pressure components (26, 56) are eccentric rollers which are rotated individually or together.

Description

Die Erfindung betrifft eine Abreißeinrichtung für Abschnitte einer Materialbahn mit einem Vorzugswerk und einem Abreißwerk nach dem Oberbegriff des Anspruches 1.The invention relates to a tear-off device for sections of a material web with a preferred movement and a tear-off according to the preamble of the claim 1.

Derartige Abreißeinrichtungen werden beispielsweise in Schlauchmaschinen als Teil einer Sacklinie eingesetzt, um eine Schlauchbahn an perforierten Stellen in Schlauchabschnitte zu trennen. Die Schlauchbahn wird üblicherweise vom Vorzugswerk zwischen einander gegenüberliegenden endlosen Förderbändern transportiert und dem Abreißwerk zugeführt.Such tear-off devices are used, for example, in hose machines Part of a sacking line used to create a tubular web at perforated points in Separate hose sections. The tube web is usually from the preferred factory transported between opposed endless conveyor belts and fed to the tear-off.

Aus der DE 44 40 660 ist eine Abreißeinrichtung für Schlauchabschnitte bekannt, deren Abreißwerk auf beiden Seiten der Schlauchbahn sich gegenüberliegende Andruckwalzen aufweist, die jeweils in Schwenkarmen gelagert sind. Die Förderbänder des Abreißwerkes stehen zunächst nicht mit der Schlauchbahn in Eingriff. Die sich gegenüberliegenden Andruckwalzen werden mittels Schwenken der Schwenkarme aufeinander zu gegen die Förderbänder und die sich dazwischen befindende Schlauchbahn angestellt. Da das Abreißwerk eine höhere Geschwindigkeit der Förderbänder aufweist als das Vorzugswerk, erfolgt dabei ein Abreißen eines Schlauchabschnittes der Schlauchbahn an einer vorbereiteten perforierten Stelle.From DE 44 40 660 a tear-off device for hose sections is known, their Abreißwerk on both sides of the tube web opposite each other Compression rollers which are each mounted in pivot arms. The Conveyor belts of Abreißwerkes are initially not with the tubular web in Intervention. The opposing pressure rollers are by means of pivoting the swivel arms face each other against the conveyor belts and between them employed hose web employed. Since the tearing off a higher speed the conveyor belts has as the preferential work, takes place while a Tearing off a tube section of the tube web on a prepared perforated body.

Aus der EP 0 227 896 ist eine andere Abreißeinrichtung für Schlauchabschnitte bekannt, bei der im Abreißwerk auf einer Seite der Förderbänder drei Andruckwalzen so gelagert sind, daß sie mit Hilfe einer Exzenterscheibe gemeinsam gegen gegenüberliegende Andruckwalzen verschoben werden können.From EP 0 227 896 is another tear-off device for hose sections known in the Abreißwerk on one side of the conveyor belts three pressure rollers are stored so that they together with an eccentric disc against opposite pressure rollers can be moved.

Aus der DE 41 13 792 ist eine Abreißeinrichtung bekannt, die sich von der zuvor genannten insbesondere dadurch unterschiedet, daß die Andruckwalzen auf beiden Seiten der Förderbänder verschiebbar gelagert sind und mit einem Kopplungsgestänge synchron bewegbar sind.From DE 41 13 792 a tear-off is known, which differs from the previously in particular distinguished by the fact that the pressure rollers on Both sides of the conveyor belts are slidably mounted and with a coupling linkage are synchronously movable.

Aus der US 4 131 272 ist eine andere Abreißeinrichtung bekannt. bei der rotierende Andruckwalzen mittels Hebeln angestellt werden können. Die Andruckwalzen weisen vorstehende Segmente auf, die dazu dienen, daß die Hebel, während die Walzensegmente von der Bahn abgewandt sind, mit einem vergleichsweise langsamen Luftzylinder in die Anstellposition gebracht werden können.From US 4,131,272 a different tear-off is known. at the rotating Pressure rollers can be made by means of levers. The pressure rollers have projecting segments that serve to hold the levers during the roller segments are remote from the web, with a comparatively slow air cylinder can be brought into the pitching position.

Aus der US 2 911 132 ist eine Abreißeinrichtung mit einer in einer U-förmigen Halterung gelagerten Andruckwalze bekannt. Ein Mittelstück der Halterung verläuft außen entlang der Andruckwalze, und Endstücke der Halterung umgreifen die beiden Achsenden der Andruckwalze. Die Halterung ist drehantreibbar und bewegt dabei die exzentrisch zur Drehachse der Halterung gelagerte Andruckwalze in die Anstellposition. Die Andruckwalze selbst ist über ein Planetengetriebe ebenfalls drehantreibbar.From US 2,911,132 is a tear-off with one in a U-shaped Bracket mounted pressure roller known. A middle piece of the holder runs outside along the pressure roller, and embrace the end pieces of the holder the two axle ends of the pressure roller. The holder is rotary drivable and moves the eccentric to the axis of rotation of the holder mounted pressure roller in the setting position. The pressure roller itself is via a planetary gear also rotatable.

Aufgabe der Erfindung ist es, eine Abreißeinrichtung der eingangs genannten Art zu schaffen, deren Abreißwerk einen einfacheren und solideren Aufbau der Anstelleinrichtung aufweist.The object of the invention is a tear-off of the aforementioned To create a kind whose demolition work a simpler and more solid structure of the Has adjusting.

Ausgehend von einer Abreißeinrichtung nach dem Oberbegriff des Anspruchs 1, bei der mindestens ein Andruckelement mittels einer Anstelleinrichtung anstellbar ist, wird diese Aufgabe erfindungsgemäß dadurch gelöst, daß die anstellbaren Andruckelemente drehantreibbare Innenexzenter aufweisen, auf denen die Andruckwalzen drehbar gelagert sind.Starting from a tear-off device according to the preamble of claim 1, at the at least one pressure element by means of a Anstelleinrichtung adjustable is, this object is achieved in that the engageable Pressure elements have rotatably driven inner eccentric, on which the Pressure rollers are rotatably mounted.

Der Vorteil eines solchen Aufbaus ist, daß das Anstellen eines Andruckelements mittels einer Drehbewegung erfolgen kann. Eine solche Drehbewegung erfordert lediglich eine einfache Mechanik, und die Lagerung der drehenden Teile kann sehr robust ausgeführt werden.The advantage of such a construction is that the hiring of a pressure element can be done by means of a rotary motion. Such a rotation requires just a simple mechanics, and the storage of rotating parts can be made very robust.

Die anstellbaren Andruckelemente weisen drehantreibbare Innenexzenter auf, auf denen Andruckwalzen drehbar gelagert sind. Es ist mindestens eine sich auf einer ersten Seite der Materialbahn befindende Andruckwalze anstellbar. Mittels einer Drehbewegung kann die auf dem Innenexzenter gelagerte Andruckwalze gegen das gegenüberliegende Andruckelement und die sich dazwischen befindende Materialbahn an- oder abgestellt werden. Alternativ können auch zwei sich gegenüberliegende Andruckwalzen gegeneinander anstellbar sein.The engageable pressure elements have rotatably drivable inner eccentrics, on which pressure rollers are rotatably mounted. It is at least one up a pressure roller located on a first side of the web can be adjusted. through a rotational movement can be mounted on the inner eccentric pressure roller against the opposite pressure element and the intervening Material web on or off. Alternatively, two can opposing pressure rollers against each other be adjustable.

Bevorzugte Ausführungsformen der Erfindung ergeben sich aus den Unteransprüchen.Preferred embodiments of the invention will become apparent from the dependent claims.

Die Anstelleinrichtung weist bevorzugt mindestens einen Motor auf, durch den die Andruckelemente drehantreibbar sind. Dies hat unter anderem den Vorteil, daß im Gegensatz zu herkömmlichen Abreißeinrichtungen eine starre Kopplung des Anstellvorganges mit dem Transport der Materialbahn entfallen kann, so daß größere Variabilität erreicht wird. Beim Anstellen eines Andruckelementes mittels eines Motors erlaubt die Drehbewegung außerdem eine direkte Umsetzung des Motordrehmoments bzw. der Motorkraft in den Anpreßdruck des Andruckelements, und sie kann ferner sehr schnell und kontrolliert durchgeführt werden.The adjusting device preferably has at least one motor through which the pressure elements are driven in rotation. This has the advantage, among other things, that in contrast to conventional tear-off a rigid coupling the Anstellvorganges with the transport of the web can be omitted, so that greater variability is achieved. When hiring a pressure element By means of a motor, the rotational movement also allows a direct implementation the engine torque or the engine power in the contact pressure of the pressure element, and it can also be done very quickly and in a controlled manner become.

Die Anstelleinrichtung weist weiterhin bevorzugt eine Steuereinrichtung zur Zeitsteuerung der Bewegung des Motors auf. Im Gegensatz zu herkömmlichen Abreißeinrichtungen, bei denen der Zeitpunkt des Anstellvorganges durch eine Exzenterscheibe oder einen anderen starren Mechanismus festgelegt ist, ist so eine variierbare und genaue zeitliche Steuerung des Abreißvorganges möglich. Die Bewegung beispielsweise eines Servomotors ist zeitlich mit einer an sich bekannten Steuereinrichtung exakt steuerbar.The adjusting device further preferably has a control device for Timing of the movement of the engine. Unlike traditional ones Tear-off devices in which the time of Anstellvorganges by a Eccentric disc or another rigid mechanism is set is so a variable and precise timing of the tearing process possible. The movement, for example, of a servomotor is timely with a known per se Control device exactly controllable.

Bevorzugt ist die Steuereinrichtung eine programmierbare Steuereinrichtung, mit der die Zeitpunkte der An- und/oder Abstellbewegungen in Bezug auf den Transport der Materialbahn einstellbar sind. Dies hat den Vorteil der Anpaßbarkeit des Anstellvorganges an verschiedene Betriebsbedingungen und Materialbahnen, beispielsweise Schlauchbahnen mit verschiedenen Schlauchformaten, insbesondere unterschiedlichen Längen der Schlauchabschnitte. So ist bei einem Wechsel der Formate der Abschnitte kein Umbau der Abreißeinrichtung nötig. Die exakte Einstellung der Betriebsparameter für den Abreißvorgang erlaubt außerdem die Verwendung höherer Maschinengeschwindigkeiten, als es bei herkömmlichen Abreißeinrichtungen mit einem starr festgelegten Ablauf des Abreißvorgangs möglich ist.Preferably, the control device is a programmable control device, with the times of arrival and / or Abstellbewegungen in relation to the Transport of the material web are adjustable. This has the advantage of adaptability the setting process to different operating conditions and material webs, for example, tubular webs with different tube formats, in particular different lengths of hose sections. So is one Changing the formats of the sections no conversion of the tear-off necessary. The exact setting of the operating parameters for the tear-off allows also using higher machine speeds than conventional ones Tear-off devices with a rigidly fixed sequence of the tear-off process is possible.

In einer vorteilhaften Ausführungsform weist die Anstelleinrichtung den mindestens einen Motor sowie die Steuereinrichtung auf, und der Motor ist über einen begrenzten Verstellweg in entgegengesetzte Richtungen antreibbar. Die Verstellbewegungen des Motors sind durch die Steuereinrichtung zeitsteuerbar. Im Falle der programmierbaren Steuereinrichtung kann auch der Verstellweg des Motors programmierbar sein. Das An- und Abstellen des mindestens einen Andrukkelementes erfolgt dadurch, daß der Motor lediglich eine kleine Bewegung hin und zurück ausführt.In an advantageous embodiment, the adjusting device has the at least an engine and the controller on, and the engine is over a limited adjustment drivable in opposite directions. The adjustment movements of the engine are timed by the controller. In the event of the programmable control device can also be the adjustment of the motor be programmable. The on and off of at least one Andrukkelementes takes place in that the engine only a small movement out and back performs.

In einer anderen vorteilhaften Ausführungsform ist der mindestens eine Motor in eine Drehrichtung umlaufend mit variierbarer Geschwindigkeit antreibbar, und die Geschwindigkeit des Motors kann bis zum Stillstand variierbar sein. Eine solche Bewegung des Motors hat den Vorteil, daß geringere Beschleunigungen nötig sind, da kein Reversierbetrieb des Motors erfolgt.In another advantageous embodiment, the at least one engine drivable in a direction of rotation circumferentially with variable speed, and the speed of the engine can go up be variable to a stop. Such movement of the engine has the advantage that lower accelerations are necessary because no reversing operation of Motors done.

Beide genannten Varianten der Motorbewegung haben den Vorteil, daß je nach Ausführungsform Betriebsparameter, wie die Zeitdauer der An- und/oder Abstellbewegungen des Andruckelements, individuell eingestellt werden können.Both mentioned variants of the motor movement have the advantage that depending on Embodiment operating parameters, such as the duration of the arrival and / or Abstellbewegungen of the pressure element, can be adjusted individually.

Bevorzugt ist der mindestens eine Motor ein Servomotor. Vorteilhaft ist daran, daß ein Servomotor ein hohes Drehmoment auch bei niedrigster Geschwindigkeit oder im Stillstand bietet und eine hohe Dynamik aufweisen kann. Eine exakte Positionskontrolle ist dabei durch einen Regelkreis mit einem Positionsgeber erreichbar. Anstelle eines Servomotors kann ebenso auch ein Schrittmotor oder ein Direktantrieb vorgesehen sein.Preferably, the at least one motor is a servomotor. It is advantageous that a servo motor high torque even at the lowest speed or at standstill and can have high dynamics. An exact one Position control is by a control loop with a position sensor reachable. Instead of a servo motor can also be a stepper motor or a direct drive can be provided.

Bevorzugt weisen das Vorzugswerk und das Abreißwerk jeweils einen eigenen Antrieb auf. Dies ermöglicht eine individuell anpaßbare Einstellung der Transportgeschwindigkeiten an verschiedene Bahnsorten. Insbesondere kann die Übergeschwindigkeit, um die die Transportgeschwindigkeit des Abreißwerkes die das Vorzugswerkes übertrifft, an das je nach Bahnsorte für den Abreißvorgang benötigte Maß angepaßt werden. In Verbindung mit einer variierbaren Verweildauer des Andruckelements im angestellten Zustand ist ferner die Anpaßbarkeit des Abreißvorganges an die Transportgeschwindigkeit einer nachfolgenden Bearbeitungseinrichtung gegeben.Preferably, the preferential work and the tear-off each have their own Drive up. This allows an individually adjustable adjustment of the transport speeds to different types of railway. In particular, the Overspeed to the transport speed of the tearing off the the preferential work surpasses, depending on the type of web for the tear-off needed measure to be adjusted. In conjunction with a variable residence time the pressure element in the salaried state is also the adaptability the tear-off to the transport speed of a subsequent processing device given.

Besonders bei der Abreißeinrichtung mit einem in eine Drehrichtung umlaufenden Motor weist die Anstelleinrichtung vorteilhafterweise mindestens ein verschiebbares Gestell auf, in dem eines oder mehrere der Andruckelemente gelagert sind. Durch Verschieben des Gestells ist der Abstand zwischen gegenüberliegenden Andruckelementen einstellbar. Auf diese Weise ist, wie es im übrigen bei einer Ausführungsform mit begrenztem Verstellweg des Motors schon über eine Variation des Verstellweges erreichbar ist, die Stärke des Andruckvorganges auf einfachste Weise an das Bahnmaterial anpaßbar. Die Andruckkraft läßt sich bei bekannten elastischen Eigenschaften der Andruckelemente, der Materialbahn und etwaiger Förderbänder je nach Ausführungsform durch Variieren des Verstellweges des Motors oder der Position des Gestells bestimmen. Dies ist vorteilhaft, da verschiedene Bahnsorten beispielsweise unterschiedliche Reibungskoeffizienten aufweisen können oder unterschiedliche Kraft zum Auftrennen der Perforation benötigt werden kann.Particularly in the tear-off device with a rotating in a direction of rotation Motor, the adjusting means advantageously at least one displaceable Frame on which one or more of the pressure elements stored are. By moving the frame, the distance between opposite Adjustable pressure elements. In this way, as it is otherwise in an embodiment with limited displacement of the engine already over a variation of the adjustment is achievable, the strength of the Andruckvorganges Easily adaptable to the web material. The pressure force can be with known elastic properties of the pressure elements, the material web and any conveyor belts depending on the embodiment by varying the Determining the adjustment path of the motor or the position of the frame. This is advantageous because different types of webs, for example, different friction coefficients may have different force or to separate the Perforation may be needed.

Das mindestens eine Gestell ist bevorzugt durch mindestens einen zweiten Motor verschiebbar.The at least one frame is preferred by at least one second motor displaceable.

Im folgenden werden bevorzugte Ausführungsbeispiele der Erfindung anhand der Zeichnung näher erläutert.In the following preferred embodiments of the invention are based on explained in detail the drawing.

Es zeigen:

Fig. 1
eine schematische Seitenansicht einer Abreißeinrichtung mit anstellbaren Andruckwalzen, die jeweils auf einem Innenexzenter gelagert sind;
Fig. 2
die Abreißeinrichtung aus Figur 1 mit angestellten Andruckwalzen;
Fig. 3
einen Ausschnitt einer anderen schematischen Seitenansicht der Abreißeinrichtung aus Figur 1, bei der Zahnradstufen dargestellt sind, mit denen die Exzenter gekoppelt sind;
Fig. 4
einen Längsschnitt durch eine Andruckwalze aus Figur 3 mitsamt Lagerung und Motor;
Fig. 5
eine Detailansicht zweier Andruckwalzen aus Figur 3 in abgestellter Position;
Fig. 6
die Andruckwalzen aus Figur 5 in angestellter Position; und
Fig. 7
die Andruckwalzen als Figur 5 in angestellter Position, bei der die Andruckwalzen jeweils maximal vertikal ausgelenkt sind;
Show it:
Fig. 1
a schematic side view of a tear-off with adjustable pressure rollers, which are each mounted on an inner eccentric;
Fig. 2
the tear-off device of Figure 1 with salaried pressure rollers;
Fig. 3
a section of another schematic side view of the tear-off of Figure 1, are shown in the gear stages with which the eccentric are coupled;
Fig. 4
a longitudinal section through a pressure roller of Figure 3, including storage and engine;
Fig. 5
a detailed view of two pressure rollers of Figure 3 in the parked position;
Fig. 6
the pressure rollers of Figure 5 in an employed position; and
Fig. 7
the pressure rollers as Figure 5 in an employed position, in which the pressure rollers are deflected at most vertically;

Figur 1 zeigt eine Abreißeinrichtung mit einem Vorzugswerk 10 und einem Abreißwerk 12. Das Vorzugswerk 10 und das Abreißwerk 12 weisen jeweils obere endlose Förderbänder 14 und untere endlose Förderbänder 16 auf. Zwischen den Förderbändern 14 und 16 wird eine Materialbahn 18 transportiert. Die Förderbänder 14 und 16 laufen auf Umlenkrollen 20 und werden durch Antriebe 22 mit Antriebssteuereinrichtungen 24 angetrieben. Das Abreißwerk 12 weist auf der oberen Seite der Materialbahn 18 drei obere Andruckwalzen 26 auf, denen auf der unteren Seite der Materialbahn 18 drei untere Andruckwalzen 26 gegenüberstehen.Figure 1 shows a tear-off with a Preference movement 10 and a tear-off 12. The preferred movement 10 and the tear-off 12 each have upper endless conveyor belts 14 and lower endless ones Conveyor belts 16 on. Between the conveyor belts 14 and 16 is a web 18 transported. The conveyor belts 14 and 16 run on pulleys 20 and are driven by drives 22 with drive control devices 24. The tear-off 12 has on the upper side of the web 18 three upper pressure rollers 26, those on the lower side of the material web 18th three lower pressure rollers 26 face.

Die Andruckwalzen 26 sind jeweils drehbar auf Walzenachsen 28 gelagert, die über exzentrisch angesetzte Antriebsachsen 30 in einem Gestell 32 gelagert sind. Mittels einer Drehbewegung der entsprechenden Antriebsachsen 30 sind die Walzenachsen 28 mit den Andruckwalzen 26 um die jeweilige Antriebsachse 30 schwenkbar. Die oberen und unteren Antriebsachsen 30 sind jeweils über Zahnräder 34 (Figur 3) kraftgekoppelt und werden über Servomotoren 36 angetrieben.The pressure rollers 26 are each rotatably mounted on roller axles 28, the mounted on eccentrically mounted drive axles 30 in a frame 32 are. By means of a rotational movement of the corresponding drive axles 30 are the roller axles 28 with the pressure rollers 26 about the respective drive axle 30 swiveling. The upper and lower drive axles 30 are each over Gear wheels 34 (Figure 3) power coupled and are driven by servo motors 36.

Die Materialbahn 18 wird in einer Transportrichtung 38, die durch einen Pfeil angedeutet ist, zwischen den Förderbändern 14 und 16 des Abreißwerkes 12 bewegt. Dabei stehen die Förderbänder 14 und 16 des Abreißwerkes 12 in der in Figur 1 gezeigten Stellung der Andruckwalzen 26 nicht mit der Materialbahn 18 in Eingriff, so daß die Transportgeschwindigkeit der Materialbahn 18 durch die Förderbänder 14 und 16 des Vorzugswerkes 10 bestimmt wird. Die Gestelle 32, in denen die Antriebsachsen 30 gelagert sind, sind durch zweite Motoren 40 im wesentlichen senkrecht zur Materialbahn 18 verschiebbar, wobei durch die Stellung der zweiten Motoren 40 der Abstand der Gestelle 32 voneinander gezielt einstellbar ist. Bei den Motoren 40 kann es sich beispielsweise um Linearmotoren handeln.The material web 18 is in a transport direction 38, which is indicated by an arrow is indicated, between the conveyor belts 14 and 16 of the tear-off 12 moves. Here are the conveyor belts 14 and 16 of Abreißwerkes 12 in the Figure 1 shown position of the pressure rollers 26 not with the material web 18th in engagement, so that the transport speed of the material web 18 through the Conveyor belts 14 and 16 of the preferred factory 10 is determined. The racks 32, in which the drive axles 30 are mounted are by second motors 40 in essentially displaceable perpendicular to the material web 18, wherein by the position the second motors 40, the distance of the racks 32 from each other is adjustable. The motors 40 may be, for example, linear motors act.

Die Stellung der Servomotoren 36 ist mit elektronischen Steuereinrichtungen 42 gezielt zeitlich steuerbar. Bei den Steuereinrichtungen 42 kann es sich beispielsweise um speicherprogrammierbare Steuereinrichtungen handeln. In jeder Steuereinrichtung 42 ist eine Regelelektronik 44 eines Regelkreises des Servomotors 36 integriert. Der Regelkreis weist einen am Servomotor 36 angeordneten oder dort integrierten Positionsgeber 46 (Figur 4) auf, der die Stellung des Servomotors 36 erkennt. Während durch die Steuereinrichtung 42 der Verstellweg und die zeitliche Steuerung des Servomotors 36 programmierbar ist, regelt die Regelelektronik 44 mittels des Positionsgebers 46 die jeweilige momentane Sollposition des Servomotors 36.The position of the servomotors 36 is with electronic control devices 42 specifically timed. The control devices 42 may be, for example to act programmable controllers. In every control device 42 is a control electronics 44 of a control circuit of the servomotor 36 integrated. The control loop has one arranged on the servo motor 36 or there integrated position sensor 46 (Figure 4), the position of the servomotor 36 detects. While by the controller 42 of the adjustment and the timing of the servo motor 36 is programmable, controls the control electronics 44 by means of the position sensor 46, the respective current target position the servomotor 36.

Die Steuereinrichtungen 42 und die Antriebssteuereinrichtungen 24, die in entsprechender Weise Regelkreise mit Positionsgebern aufweisen können, wirken bei der Betriebssteuerung der Abreißeinrichtung zusammen. So sind beispielsweise mit den Steuereinrichtungen 42 die Zeitpunkte der An- und Abstellbewegungen in Bezug auf den Transport der Materialbahn 18 einstellbar.The control devices 42 and the drive control devices 24, which in corresponding May have control circuits with position sensors act in the operation control of the tear-off together. Such are, for example with the control devices 42, the times of arrival and Abstellbewegungen adjustable with respect to the transport of the material web 18.

Figur 2 zeigt die Abreißeinrichtung aus Figur 1, bei der die oberen und unteren Andruckwalzen 26 gegeneinander angestellt sind. Sie sind dazu jeweils um ihre Antriebsachse 30 geschwenkt. Die von den Förderbändern 14 und 16 des Abreißwerkes 12 zwischen den Andruckwalzen 26 erfaßte Materialbahn 18 wird aufgrund der gegenüber der Transportgeschwindigkeit v1 des Vorzugswerkes 10 erhöhten Transportgeschwindigkeit v2 des Abreißwerkes 12 an einer mit einem Pfeil X gekennzeichneten performierten Stelle aufgetrennt. Es wird ein Materialabschnitt 48 abgetrennt, der beim weiteren Transport von dem Rest der Materialbahn 18 entfernt wird. Die Transportgeschwindigkeiten v1 können v2 können je nach Bedarf über die Antriebe 22 unabhängig voneinander vorgegeben werden.Figure 2 shows the tear-off of Figure 1, in which the upper and lower pressure rollers 26 are employed against each other. They are each pivoted about their drive axis 30. The material web 18 detected by the conveyor belts 14 and 16 of the tear-off unit 12 between the pressure rollers 26 is separated at a performed point indicated by an arrow X because of the increased transport speed v 2 of the tear-off unit 12 compared to the transport speed v 1 of the preferential work 10. It is a material portion 48 separated, which is removed during further transport of the rest of the web 18. The transport speeds v 1 can v 2 can be specified independently of one another as required via the drives 22.

Figur 3 zeigt einen vergrößerten Ausschnitt des Abreißwerkes 12 aus Figur 1. Dargestellt sind hier die Zahnräder 34, mit denen die Antriebsachsen 30 der oberen und unteren Andruckwalzen 26 gekoppelt sind. In Figur 3 ist am oberen und unteren Gestell 32 jeweils das rechte Zahnrad 34 durch den Servomotor 36 verdeckt. Die Servomotoren 36 treiben jeweils die Antriebsachsen 30 der oberen oder unteren Andruckwalzen 26 an. Anstelle der Zahnräder 34 können zur Kraftkopplung der Antriebsachsen 30 beispielsweise auch Zahnriemen oder andere Mittel vorgesehen sein.FIG. 3 shows an enlarged detail of the tear-off unit 12 from FIG. 1. Shown here are the gears 34, with which the drive axles 30 of upper and lower pressure rollers 26 are coupled. In Figure 3 is at the top and lower frame 32 each have the right gear 34 through the servomotor 36 covered. The servomotors 36 respectively drive the drive shafts 30 of the upper or lower pressure rollers 26 at. Instead of the gears 34 can for Power coupling of the drive axles 30, for example, toothed belt or other Means be provided.

Figur 4 zeigt einen Querschnitt durch eine untere Andruckwalze 26 und den dazugehörigen Servomotor 36 aus Figur 3, entsprechend der in Figur 3 gekennzeichneten Ebene A. Die Andruckwalze 26 ist mit eingepaßten Lagern 50 auf der Walzenachse 28 drehbar gelagert. An den Enden der Walzenachse 28 ist exzentrisch jeweils ein Teilstück der Antriebsachse 30 befestigt. Alternativ können die Walzenachse 28 und die Antriebsachse 30 auch in einem Stück hergestellt sein. Die Antriebsachse 30 ist in Lagern 52 drehbar in dem Gestell 32 gelagert. Der Servomotor 36, der an einer in Figur 3 nicht dargestellten Platte 54 gehalten ist, treibt die Antriebsachse 30 an. An dem Servomotor 36 ist der Positionsgeber 46 angeordnet.Figure 4 shows a cross section through a lower pressure roller 26 and the associated Servomotor 36 of Figure 3, corresponding to the marked in Figure 3 Level A. The pressure roller 26 is fitted with bearings 50 on the Roller shaft 28 rotatably mounted. At the ends of the roll axis 28 is eccentric each attached a portion of the drive shaft 30. Alternatively, the Roll axis 28 and the drive shaft 30 may be made in one piece. The drive shaft 30 is rotatably supported in bearings 52 in the frame 32. Of the Servomotor 36, which is held on a plate 54, not shown in Figure 3, drives the drive axle 30. On the servo motor 36, the position sensor 46th arranged.

Auf der Antriebsachse 30 ist das Zahnrad 34 befestigt, mit dem die Kraft des Servomotors 36 auf die anderen Antriebsachsen 30 der unteren Andruckwalzen 26 übertragen wird. Die Anordnung der beschriebenen Elemente an den Walzenachsen 28 und Antriebsachsen 30 stellt jedoch lediglich ein Beispiel dar.On the drive axle 30, the gear 34 is fixed, with which the force of Servomotor 36 to the other drive axles 30 of the lower pressure rollers 26 is transmitted. The arrangement of the described elements on the roll axes 28 and drive axles 30, however, is merely an example.

Mittels einer Drehbewegung der Antriebsachse 30 wird die Walzenachse 28 um die Antriebsachse 30 geschwenkt. Die auf der Walzenachse 28 drehbar gelagerte Andruckwalze 26 kann so gegen die gegenüberliegende Andruckwalze 26 angestellt werden.By means of a rotational movement of the drive shaft 30, the roller shaft 28 is in order the drive shaft 30 is pivoted. The rotatably mounted on the roller shaft 28 Pressure roller 26 can be employed against the opposite pressure roller 26 become.

Figur 5 zeigt einen Teilausschnitt des Abreißwerkes 12 aus Figuren 1 und 3 mit den linken beiden Andruckwalzen 26 im abgestellten Zustand. Dargestellt sind die Walzenachsen 28 mit den Antriebsachsen 30, die Lager 50 der Andruckwalzen 26 und die Gestelle 32 sowie die Förderbänder 14 und 16 mit der sich dazwischen befindenden Materialbahn 18. In der in Figur 5 dargestellten Position der Walzenachsen 28 berühren die Andruckwalzen 26 die Förderbänder 14 und 16 nicht. Der Abstand zwischen einer Andruckwalze 26 und dem daran vorbeilaufenden Förderband 14 bzw. 16 kann jedoch auch so gering sein, daß die Andruckwalze 26 von dem Förderband mitbewegt wird und um ihre Walzenachse 28 dreht.Figure 5 shows a partial section of the tear-off 12 of Figures 1 and 3 with the left two pinch rollers 26 in the parked state. Are shown the roller axles 28 with the drive axles 30, the bearings 50 of the pressure rollers 26 and the racks 32 and the conveyor belts 14 and 16 with the intervening located material web 18. In the position shown in Figure 5 the roller axles 28 touch the pressure rollers 26, the conveyor belts 14 and 16 not. The distance between a pressure roller 26 and the passing thereon However, conveyor belt 14 or 16 may also be so small that the pressure roller 26 is moved by the conveyor belt and about its roll axis 28 turns.

Figur 6 zeigt die gleiche Ansicht wie Figur 5, bei der sich aber die Andruckwalzen 26 wie in Figur 2 in einer an die Förderband 14 und 16 angestellten Position befinden. Die Andruckwalzen 26 wurden dazu über gegensinnige Drehbewegungen der jeweiligen Antriebsachsen 30 der Transportrichtung 38 entgegengesetzt geschwenkt. In der in Figur 6 gezeigten Position der Walzenachsen 28 werden die angestellen Andruckwalzen 26 von den Förderbändern 14 bzw. 16 bewegt und drehen um ihre jeweilige Walzenachse 28. In Figur 6 ist der Abstand zwischen den Antriebsachsen 30 so gering, daß die Andruckwalzen 26 noch vor ihrer maximalen vertikalen Auslenkung gegeneinanderstoßen, so daß die Antriebsachsen 30 keine ganze Umdrehung durchführen können. Daher erfolgt das Abstellen einer Andruckwalze 26 mittels Bewegung des Servomotors 36 in umgekehrter Drehrichtung wie beim Anstellen.Figure 6 shows the same view as Figure 5, but in which the pressure rollers 26 as in Figure 2 in a position employed on the conveyor belt 14 and 16 position are located. The pressure rollers 26 were about opposing rotational movements the respective drive axes 30 of the transport direction 38 opposite pivoted. In the position of the roller axles 28 shown in FIG the applied pressure rollers 26 are moved by the conveyor belts 14 and 16, respectively and rotate about their respective roller axis 28. In FIG. 6, the distance between the drive axles 30 so small that the pressure rollers 26 before their maximum vertical deflection abut each other, so that the drive axles 30 can not make a full turn. Therefore, the shutdown occurs a pressure roller 26 by means of movement of the servo motor 36 in reverse Direction of rotation as when hiring.

Figur 7 zeigt die Andruckwalzen 26 ebenfalls in einer angestellten Position, bei der sie jedoch maximal vertikal ausgelenkt sind. Dies wird dadurch ermöglicht, daß die Gestelle 32 einen größeren Abstand voneinander aufweisen als in Figur 6. Auf diese Weise ist auch ein Betrieb des Servomotors 36 mit einer festen Drehrichtung möglich, da die Antriebsachsen 30 zum Abstellen der Andruckwalzen 26 in die gleiche Richtung wie beim Anstellen weiterdrehen können. Einerseits kann so eine extrem kurze Zeitdauer des Abreißvorganges erreicht werden, indem der Servomotor 36 nicht angehalten wird. Dies kann beispielsweise bei sprödem Papier vorteilhaft sein. Andererseits ist mittels Verharren der Walzenachsen 28 in der in Figur 7 gezeigten Position mit angestellten Andruckwalzen 26 auch eine längere Zeitdauer zwischen An- und Abstellen der Andruckwalzen 26 erzielbar.Figure 7 shows the pressure rollers 26 also in an employed position, at However, they are deflected vertically maximally. This is made possible by that the racks 32 have a greater distance from one another than in FIG 6. In this way, an operation of the servo motor 36 with a fixed Direction of rotation possible because the drive axles 30 for stopping the pressure rollers 26 can continue to turn in the same direction as when hiring. On the one hand Thus, an extremely short period of the tearing process can be achieved by not stopping the servomotor 36. This can be for example be advantageous to brittle paper. On the other hand, by means of persistence of the roll axes 28 in the position shown in Figure 7 with salaried pressure rollers 26 also a longer period of time between turning on and off the pressure rollers 26 achievable.

Bei der beschriebenen Ausführungsform kann die in Figur 7 dargestellte Position der Gestelle 32 durch die zweiten Motoren 40 eingestellt werden. Dadurch wird auch bei einem Betrieb des Servomotors 36 mit einer festen Drehrichtung eine Einstellung des Anpreßdruckes der Andruckwalzen 26 möglich, die bei der in Figur 6 gezeigten Position schon allein über den Servomotor 36 erreicht werden kann. In beiden Fällen läßt sich die Andruckkraft der angestellten Andruckwalzen bei bekannten elastischen Eigenschaften der Andruckwalzen, der Materialbahn und etwaiger Förderbänder durch Variieren des Verstellweges des Servomotors 36 oder der Stellung des zweiten Motors 40 bestimmen.In the described embodiment, the position shown in FIG the racks 32 are adjusted by the second motors 40. Thereby is also in an operation of the servo motor 36 with a fixed direction of rotation an adjustment of the contact pressure of the pressure rollers 26 possible in the 6 already reached by means of the servomotor 36 can. In both cases, the pressure force of the employed pressure rollers can be in known elastic properties of the pressure rollers, the material web and any conveyor belts by varying the adjustment of the servomotor 36 or the position of the second motor 40 determine.

Alternativ zu der beschriebenen Ausführungsform können auch lediglich die Andruckwalzen 26 auf einer Seite der Materialbahn 18 anstellbar sein oder an einem verschiebbaren Gestell 32 gelagert sein.As an alternative to the embodiment described, only the pressure rollers can be used 26 on one side of the web 18 to be adjustable or on a be displaced frame 32 stored.

Alternativ zu zwei einzeln verschiebbaren Gestellen 32 können die Gestelle 32 auch über ein Kopplungsgestänge so gekoppelt sein, daß sie synchron anstellbar sind.As an alternative to two individually displaceable racks 32, the racks 32 be coupled via a coupling linkage so that they can be adjusted synchronously are.

Während in der beschriebenen Ausführungsform jeweils ein Servomotor 36 die Antriebsachsen 30 der unteren und der oberen Andruckwalzen 26 antreibt, ist es alternativ auch denkbar, daß sämtliche Antriebsachsen 30 gekoppelt sind und von einem Servomotor 36 angetrieben werden.While in the described embodiment, each one servo motor 36 the Drive axles 30 of the lower and upper pinch rollers 26 drives is Alternatively, it is also conceivable that all drive axles 30 are coupled and driven by a servomotor 36.

In dem dargestellten Beispiel sind sich auf beiden Seiten der Materialbahn gegenüberstehenden Andruckelemente jeweils vertikal zueinander angeordnet. Die Erfindung umfaßt jedoch auch solche Anordnungen, bei denen die Andruckelemente auf beiden Seiten der Materialbahn in Transportrichtung relativ zueinander verschoben angeordnet sind, so daß die Materialbahn bei angestellten Andruckelementen wellenförmig durch das Abreißwerk läuft.In the example shown, the material web is opposite on both sides Pressure elements each arranged vertically to each other. The However, the invention also includes such arrangements in which the pressure elements on both sides of the web in the transport direction relative to each other are arranged shifted, so that the material web in employed pressure elements undulating through the tear-off device.

Obwohl die beschriebenen Beispiele jeweils Förderbänder 14 und 16 aufweisen, kann auf diese auch verzichtet werden, und der Transport der Materialbahn 18 kann auch auf andere Art und Weise erfolgen.Although the examples described each have conveyor belts 14 and 16, can also be dispensed with, and the transport of the material web 18th can also be done in other ways.

Claims (10)

  1. Tearing device for sections (48) of a web of material (18) having a conveyer means (10) for transporting the web of material (18), and a tearing means (12) comprising at least two pressure elements (26) arranged on opposite sides of the web of material (18), at least one of the elements being positionable against the web of material (18) by means of a positioning device, wherein the positionable pressure elements (26) are formed as eccentric rollers having eccentrically supported pressure rollers (26) and are adapted to be driven into rotation individually or in common, characterized in that the positionable pressure elements comprise rotatably driven internally eccentric means (28, 30) on which the pressure rollers (26) are rotatably supported.
  2. Tearing device according to claim 1, characterized in that the positioning device comprises at least a motor (36) by which the pressure elements (26) are adapted to be driven into rotation.
  3. Tearing device according to claim 2, characterized in that the positioning device comprises a control device (42) for controlling the timing of the movement of the motor (36).
  4. Tearing device according to claim 3, characterized in that the control device (42) is a programmable control device by means of which the points of time of the movements towards and/or away with respect to the transport movement of the web of material (18) is adjustable.
  5. Tearing device according to one of the claims 3 or 4, characterized in that the at least one motor (36) of the positioning device is adapted to be driven over a limited displacement path in opposite directions, and in which the displacement movements of the motor (36) are adapted to be timed by means of the control device (42), and in which, in case of a programmable control device (42), the displacement path of the motor (36) is programmable.
  6. Tearing device according to one of the claims 2 to 4, characterized in that the at least one motor (36) is adapted to be driven in one direction of rotation with variable speed.
  7. Tearing device according to claim 6, characterized in that the speed of the motor (36) is adapted to be varied down to stand still.
  8. Tearing device according to one of the claims 2 to 7, characterized in that the motor (36) is a servomotor.
  9. Tearing device according to one of the preceding claims, characterized in that the feeding means (10) and the tearing means (12) comprise their own drive (22) each.
  10. Tearing device according to one of the preceding claims, characterized in that the positioning device comprises at least one shiftable rack (32) within which one or several of the pressure elements (26) is/are supported.
EP20030008666 2003-04-16 2003-04-16 Tearing device for webs of material Expired - Lifetime EP1471023B1 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
ES03008666T ES2250774T3 (en) 2003-04-16 2003-04-16 BREAKING DEVICE FOR MATERIAL BANDS.
AT03008666T ATE310701T1 (en) 2003-04-16 2003-04-16 TEAR-OFF DEVICE FOR MATERIAL WEBS
DE50301735T DE50301735D1 (en) 2003-04-16 2003-04-16 Departure device for material webs
EP20030008666 EP1471023B1 (en) 2003-04-16 2003-04-16 Tearing device for webs of material
US10/820,258 US20040211807A1 (en) 2003-04-16 2004-04-08 Tear-off device for continuous materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20030008666 EP1471023B1 (en) 2003-04-16 2003-04-16 Tearing device for webs of material

Publications (2)

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EP1471023A1 EP1471023A1 (en) 2004-10-27
EP1471023B1 true EP1471023B1 (en) 2005-11-23

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US (1) US20040211807A1 (en)
EP (1) EP1471023B1 (en)
AT (1) ATE310701T1 (en)
DE (1) DE50301735D1 (en)
ES (1) ES2250774T3 (en)

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ATE310701T1 (en) 2005-12-15
US20040211807A1 (en) 2004-10-28
DE50301735D1 (en) 2005-12-29
EP1471023A1 (en) 2004-10-27
ES2250774T3 (en) 2006-04-16

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