EP1295830B1 - Roll changer and method for the automatic change of rolls during stop - Google Patents

Roll changer and method for the automatic change of rolls during stop Download PDF

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Publication number
EP1295830B1
EP1295830B1 EP02405806A EP02405806A EP1295830B1 EP 1295830 B1 EP1295830 B1 EP 1295830B1 EP 02405806 A EP02405806 A EP 02405806A EP 02405806 A EP02405806 A EP 02405806A EP 1295830 B1 EP1295830 B1 EP 1295830B1
Authority
EP
European Patent Office
Prior art keywords
web
working
reel
supply
roll
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
EP02405806A
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German (de)
French (fr)
Other versions
EP1295830A3 (en
EP1295830A2 (en
EP1295830B2 (en
Inventor
Daniel Burri
Hans Moser
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.)
Wifag Maschinenfabrik AG
Original Assignee
Wifag Maschinenfabrik AG
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Filing date
Publication date
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Application filed by Wifag Maschinenfabrik AG filed Critical Wifag Maschinenfabrik AG
Publication of EP1295830A2 publication Critical patent/EP1295830A2/en
Publication of EP1295830A3 publication Critical patent/EP1295830A3/en
Application granted granted Critical
Publication of EP1295830B1 publication Critical patent/EP1295830B1/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
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
    • B65H19/1857—Support arrangement of web rolls
    • B65H19/1868—The roll support being of the turret type
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H19/00—Changing the web roll
    • B65H19/10—Changing the web roll in unwinding mechanisms or in connection with unwinding operations
    • B65H19/18—Attaching, e.g. pasting, the replacement web to the expiring web
    • B65H19/1842—Attaching, e.g. pasting, the replacement web to the expiring web standing splicing, i.e. the expiring web being stationary during splicing contact
    • B65H19/1847—Attaching, e.g. pasting, the replacement web to the expiring web standing splicing, i.e. the expiring web being stationary during splicing contact taking place on the replacement roll
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2301/00—Handling processes for sheets or webs
    • B65H2301/10—Selective handling processes

Definitions

  • the invention relates to a roll changer for a web-processing or processing machine, which is set up for a roll change at standstill of the roll changer.
  • the invention further relates to a method for an automatic reel change in such a machine, in which a web to be replaced, although retracted into the machine, but is not in production.
  • Such reelstands are e.g. from DE 1256501, US 5,514,237, US 5,064,488 and US 4,892,263.
  • Web-fed rotary printing machines which are preferred examples of web-processing machines for the purposes of the invention, usually have reelstands which are capable of carrying out a so-called flying reel change.
  • a unwinding in the reel splitter from a work roll working web is fully automatically added in a flying reel change during production a stock web and connected to the work path.
  • the supply track winds in the roll changer from a supply roll.
  • the work path is cut, and the old work role either also fully automatically or manually taken from the reel changer and replaced, for example, against a new supply roll.
  • the supply track attached to the working track is the new working track.
  • reelstands that are set up for a flying reel change are standard, at least for large newspaper presses, the reel change causes problems when the reelstand is at a standstill.
  • no reel changers are known which are set up both for a flying reel change and for a fully automatic reel change when the reel changer is at a standstill.
  • the invention is based on a reel splicer for a web processing machine, which is set up for processing a work web to be processed from a work roll, attaching a supply web to the work web and connecting the two webs to one another.
  • a preferred example of a web-processing machine is a web-fed rotary printing press, preferably an offset press for newspaper printing, especially newspaper printing in large runs.
  • the machine may also be a web-processing machine for plastic or metal and basically any web-like material, for example a plastic film, a metal foil, but more preferably paper.
  • the one web is referred to, which is already fed into the machine and is to be replaced by the supply track, for example, according to consumption.
  • the reel changer has a first storage for the work roll and a second storage for the supply roll.
  • the bearings are preferably movable in the reel changer so that they are movable in alternation in a working position and in an exchange position.
  • the working position advantageously also forms a joining position, which is an adhesive position when joined by gluing.
  • the bearings are formed by roller arms, which are pivotable alternately in the working position and in the replacement position.
  • the roll changer further comprises a connecting device for connecting the supply web with the working web.
  • the connecting device is preferably designed as an adhesive device in order to produce an adhesive bond between the working web and the supply web. This is the usual connection technology for webs in web-fed rotary printing. In machines for processing or processing plastic films, however, the connecting device can also be formed, for example, by a welding device; also with machines for working or processing of metallic tracks. However, other suitable joining techniques should also not be excluded, even for paper webs.
  • the roll changer further comprises a holding device, which in the conveying direction of the working path behind the connecting device, i. down the connection device is arranged.
  • the holding device is designed such that it can fix, preferably completely block, the working path in relation to the conveying direction.
  • the fixation is preferably carried out exclusively by frictional engagement, particularly preferably by clamping the work path.
  • the reel changer finally includes a draw gear for the work path.
  • the traction device is arranged in the path of the work path between the connecting device and the holding device and set up or designed so that it can pull the working web from the work roll.
  • the removal from the work roll is either entirely without engine assistance or with engine assistance or even against a braking force that may be generated by a drive motor or an additional brake.
  • an advantageous web tension is generated and maintained by means of the pulling device, optionally in conjunction with a rotary drive of the work roll or a brake for the work roll, during the peeling.
  • the traction device may be a traction device with which the web is also conveyed during ongoing production
  • the trajectory is preferably conveyed by the traction device only when the reelstand is at a standstill, but this length must of course be sufficiently great make the connection of the supply track with the work path and perform the automatic role change at a fixed work path can. If the towing device promotes the web in the current production, this is preferably done only temporarily.
  • a particularly elegant solution is the use of a clamping device, which serves to compensate for web tension fluctuations during ongoing production of the machine, as a pulling device.
  • known web tension devices such as For example, pivotally or linearly movably supported pendulum rollers and equivalent roller devices, which are wrapped by the web and regulate the web tension by their own movement transversely to their longitudinal axis by changing the length of the web path.
  • the tensioned by the web clamping element, a cylinder body in the case of a roller or possibly even a simple rod or the plurality of cylinder body in the case of a roller device is mounted movable against the elasticity of a return element transverse to its longitudinal axis.
  • the clamping element is further coupled with a drive causing this transverse movement.
  • the drive may be, for example, an electric motor or a fluid drive, in particular a piston-cylinder arrangement.
  • tensioning devices can also be used only as a pulling device and does not have to be used as a tensioning device.
  • a restoring element for generating a restoring elasticity force does not necessarily have to be present accordingly.
  • the holding device can in principle be formed by one or more of the roll changer in the path of the work following loading or processing facilities of the machine, which is counted for the purposes of the invention in such a design of the holding device belonging to the reel splitter or be.
  • the holding device is formed on the web path of the work path in front of the first processing or processing device, which follows the traction device according to the invention, to obtain a short path between the traction device and the holding device.
  • the web start of the supply roll should be replaced by the withdrawal from the supply roll.
  • the holding device must therefore fix the web at least in the sense that by means of the pulling device not the working path out of the machine in the direction Reel changer is pulled while a withdrawal or withdrawal of the working web from the work roll does not take place to a sufficient extent.
  • the holding device can in particular be formed by a draw roller or a plurality of draw rollers, which are or are arranged in the path of the work path in front of the first printing unit, in particular by an infeed mechanism for the printing unit or several printing units.
  • a tension roller or the plurality of tension rollers is set, i. the tension roller or tension rollers is or are preferably blockable. If the coefficient of friction between the web and such a tension roller or a plurality of tension rollers is already sufficient for a fixation of the web, an already existing traction device can directly form the holding device according to the invention.
  • a pressure element arranged so that the pressure element can be pressed against the tension member to clamp the web between the tension member and the pressure element and hold so that the web through the Action of the pulling device according to the invention can not be retracted backwards.
  • a method according to the invention for an automatic standstill roll change in a web processing machine at least the following operations are performed:
  • the supply roll is moved to a joining position.
  • the supply web wound up into the supply roll lies parallel to the working web drawn into the machine at a distance, so that in the case of its development the supply web comes to lie exactly in coincidence with the working web.
  • the work path is pressed in the joining position of the supply roll to a web start of an outermost web layer of the supply roll and connected to this web start.
  • the work path is fixed down the track from the web start of the supply roll, preferably clamped so that they are under the influence of for the Reel change acting tensile forces at the location of fixation not or at least not moved to a practically relevant extent in the web longitudinal direction.
  • the fixation is preferably carried out before the connection is made.
  • the fixation can be made after pressing the working web to the supply roll or preferably before pressing. It should also not be ruled out that the work path has already been fixed before the supply roll has taken the joining position.
  • a tensile force is exerted on the fixed work path at a point between the web start of the supply roll and the point of fixation and the work path thereby pulled from the work roll.
  • the work path is severed at a point between the work roll and the web start of the supply roll.
  • the unwinding of the work web from the work roll is controlled, for example by the work roll being driven by a rotary drive motor in a manner adapted to the pull-out speed of the towing device according to the invention.
  • the controlled development can also be advantageously effected by a controlled braking of the work roll to adjust a favorable for the withdrawal web tension.
  • the figures show a roll changer for web-fed rotary printing presses which is set up to receive two rolls of paper R1 and R2. It has a first roller arm 1 which rotatably supports the roller R1 about a rotation axis 4.
  • the roller R1 forms a working roll from which a working web A drawn into the printing press unwinds.
  • the other roller R2 is also rotatably mounted on a second roller arm 2 about an axis of rotation 5 formed by this roller arm 2.
  • the second roll R2 is a supply roll of a supply web V, which is to replace the almost used work roll R1.
  • a motor M1 forms a rotary drive for the work roll R1, which rotates the work roll R1 about the rotation axis 4 during operation of the machine.
  • a similar motor M2 forms a rotary drive for the supply roll R2 in order to drive the supply roll R2 about its axis of rotation 5.
  • the two roller arms 1 and 2 form aligned pivot arms about a common pivot axis 3.
  • Another motor M3 forms a pivot drive for pivoting the roller arms 1 and 2 about the pivot axis 3.
  • the pivotal movement in the counterclockwise direction, the roller arm 2 in the for the roller arm. 1 be pivoted in the figures shown pivot position. Accordingly, in such a pivotal movement of the roller arm 1 is pivoted in the pivot position shown in the figures for the roller arm 2.
  • two guide rollers 9 are pivotable on pivot arms about the pivot axis 3.
  • the pivot arms for the guide rollers 9 are torsionally rigidly connected to the roller arms 1 and 2 and form a cross with these.
  • the reel changer comprises a connecting device 10, a pulling device 16 and a holding device 21 along a path formed for the working path A.
  • the connecting device 10 is designed as an adhesive device. It comprises, as a joining element, an adhesive roller 14, which is rotatably mounted on a pivoting arm 11 of the supply roll R2 opposite.
  • the pivot arm 11 is pivotable about a pivot axis 12 which is parallel to the axis of rotation 5 of the supply roll R2.
  • the axis of rotation of the adhesive roller 14 has parallel to the axis of rotation 5.
  • the adhesive roller 14 is, as indicated in Figure 1, pressed by means of the pivoting movement about the pivot axis 12 to the supply roll R2.
  • the pivoting movement towards the supply roll R2 and away from the supply roll R2 is effected by means of a pivot drive 13, which is formed by a piston-fluid-cylinder arrangement.
  • the working web A is guided in the position of the work roll R1 shown in the figures between the supply roll R2 and the adhesive roll 14.
  • the pulling device 16 In the path of the work A, immediately behind the connecting device 10, the pulling device 16 is arranged.
  • the pulling device 16 comprises a cylinder body 17, which is pivotably mounted on a pivoting arm about a pivot axis 18.
  • the cylinder body 17 is freely rotatably mounted about its longitudinal axis and is formed in the embodiment of a web-width roller body.
  • the working path A wraps around the cylinder body 17 with a wrap angle of more than 90 ° and is deflected down the track of the cylinder body 17 about a guide roller 20.
  • the working path A is freely stretched between the guide roller 9 of the roller bearing and the cylinder body 17, i. There are no other deflecting elements in this part of the railway.
  • Only the connecting device 10 acts to produce the joint connection in this track section on the working path A. Basically, however, before and / or behind the connecting device 10 further deflecting be arranged.
  • the cylinder body 17 preferably forms a per se known pendulum roller, as in the embodiment, which serves to compensate for web tension fluctuations.
  • the cylinder body 17 is accordingly against a resilience of a return element, such as a compression spring or a fluidbeaufschlagter cylinder, pivotable about the pivot axis 18, wherein the cylinder body 17 of the looping work A is moved due to the web tension against the force of the return element.
  • the traction device 16 is equipped with a drive 19, which is designed according to the exemplified pendulum roller assembly as a pivot drive.
  • the drive 19 is preferably a piston-fluid cylinder arrangement and serves to pivot the cylinder body 17 about the pivot axis 18. In the figures, an average normal or nominal position and two positions of the cylinder body 17 located on both sides of the central position are shown.
  • the holding device 21 includes a rotationally driven cylinder body 22 which is looped by the working line A.
  • the cylinder body 22 as is preferred, a draw roller.
  • the working path A is tensioned freely, ie, no further elements act on the working path A in this path section. In principle, however, deflecting elements can be arranged therebetween.
  • the holding device 21 is preferably formed by a home-made pulling device, which is arranged between the tensioning and pulling device 16 and the closest in the web path printing unit of the machine.
  • the train roller closest to the tensioning and pulling device 16 forms the cylinder body 22.
  • the cylinder body 22 opposite a formed by a clamping element 23 blocking element is arranged, which can be turned off to the cylinder body 22 and from the cylinder body 22, for example by means of a pivotal mounting of the clamping element 23.
  • the clamping element 23 when forming the cylinder body 22 as a roller preferably also formed by a roller body which is not rotatable for the purpose of fixing the working path A about its own longitudinal axis.
  • the roll changer also comprises a sensor 7 directed onto the surface of the supply roll R2.
  • the sensor 7 serves to detect a splice 6 on which a web start of the supply web V is glued to a next web layer of the supply roll R2.
  • the control device 24 is used to control and preferably also control of the drives M1, M2, M3, 13 and 19, a rotary drive for the cylinder body 22 and a drive for switching on and off of the clamping element 23.
  • the corresponding connections with the said drives for transmission the control signals are shown in dotted lines.
  • the connection can in each case be wired or wireless, for example by radio or optical, executed.
  • the roll change is carried out automatically at least after an optionally manual insertion of the supply roll R2 and removal of the old, for example, used work roll R1. This applies to a flying reel change during production and, according to the invention, also for a reel change to be performed at standstill of the reel changer.
  • FIGS. 1 to 5 An automatic roll change at standstill is described below.
  • the time sequence sequence during standstill change is shown in FIGS. 1 to 5.
  • Figure 1 shows the reel changer with retracted work A.
  • the unwound from the work roll R1 working web A is first performed on one of the guide rollers 9 and between the supply roll R2 and the connecting device 10 through to the tensioning and pulling device 16, wraps around the cylinder body 17 about 140 °, is deflected immediately behind the cylinder body 17 from the guide roller 20 to the cylinder body 22 of the holding device 21, wraps around the cylinder body 22 by preferably at least 90 ° and is finally guided from there through the first printing nip of the printing press.
  • the work roll R1 is in a working position and the supply roll R2 in a joining or gluing position, from which they together after gluing into a working position for the current supply roll and new work roll R2 be pivoted further.
  • the pivot arm 11 with the adhesive roller 14 is in an initial position in which the working path A is not touched, that is, the working path A runs freely in the state shown between the supply roll R2 and the connecting device 10.
  • the cylinder body 17 of the tensioning and pulling device 16 is held by the drive of the work roll R1 by means of the working web A, ie by their web tension, in a forward position in which the web path between the next adjacent guide rollers 9 and 20 on both sides of the cylinder body 17th has its smallest length.
  • the working path A is already fixed by the holding device 21 by the clamping element 23 is pressed with a pressing force against the cylinder body 22 and the web A is firmly clamped in the nip formed between the cylinder body 22 and the surface preferably elastically resilient clamping member 23 formed.
  • the supply roll R2 already assumes a defined rotational position in the state of the roll changer shown in FIG.
  • the supply roll R2 was previously rotated in the illustrated pivot position by means of the motor M2.
  • the splice 6 was detected by means of the sensor 7 and determined by the control device 24.
  • the motor M2 controlled by the controller 24 in the illustrated rotational angular position with the rotational position angle ⁇ rotated and preferably set in this rotational position.
  • the rotational position angle ⁇ defining this rotational position is the distance, measured in angular degrees, which the splice 6 has from the contact point of the adhesive roller 14 when the adhesive roller 14 is pressed against the supply roller R2.
  • FIG. 2 shows the state of the roll changer after the adhesive roller 14 has been pivoted about the pivot axis 12 and against the supply roll R2 has been employed and is now pressed against its surface. Otherwise take all other elements of the roll changer including the holding device 21 still the same positions as in the state of FIG. If necessary, the work roller R1 was rotated a little by pressing.
  • FIG. 3 shows the entire arrangement after the working web A has already been pulled away from the work roll R1 by a certain amount by means of the pulling device 16 in relation to the state shown in FIG.
  • the cylinder body 17 has been pivoted by the drive 19 about the pivot axis 18 and against the web tension in the middle target position shown in Figure 3.
  • This setpoint position assumes the cylinder body 17 during operation also, but pivots freely according to the interaction of the web tension and the return element.
  • the supply roll R1 has been rotated from its rotational angle position shown in FIGS. 1 and 2 into the rotational position shown in FIG. 3 due to the frictional engagement caused by the pressing adhesive roll 14, in which the splice 6 comes to rest under the adhesive roll 14. Since the splice 6 has already been made "sharp" before, the working web A is pressed by the adhesive roller 14 firmly against the splice 6 having web start of the supply path V and thereby glued the web start of the supply web V to the work A in the rotational angle position shown.
  • the braking force of the brake 8 is adjusted by the control device 24 to the pivoting movement set of the cylinder body 17 of the pulling device 16.
  • the tuning is such that the braking force of the brake 8 is set so that the cylinder 17 of the pulling device 16 performs a pivoting movement at a defined speed up to a rear position, which is shown in a solid line in Figure 4.
  • the motor M1 can be operated as a brake generator.
  • a motor for both directions of rotation form the motor M1.
  • Such a motor with reversible directions of rotation may additionally be designed as a brake generator.
  • FIG. 4 shows in sequence the state in which the cylinder body 17 assumes its rear position and the working web A has therefore been pulled out during the standstill roll change by the maximum extension length.
  • the adhesive roller 14 is pressed against the supply roll R2.
  • a clean detachment of the web start of the supply web V of the supply roll R2 is effected by the further pressing of the adhesive roller 14.
  • the web start of the supply web V is already detached from the supply roll R2.
  • FIG. 4 shows the old working track A immediately after the capping.
  • the connecting device 10 is again from the Supply roll R2 turned off. Subsequently, the cylinder body 17 is moved by the drive M1 of the work roll R1 from its rear position shown in Figure 4 back to the middle position (target position), which the cylinder body 17 also occupies during later operation of the machine or to which he in the case of web fluctuations oscillates.
  • the work A is still fixed by the holding and pulling device 21 while.
  • the supply roll R2 from which the working web subsequently unwinds, is turned back in order to keep the web tension constant or at least substantially constant.
  • the reverse rotation is indicated by the indicated rotary arrow.
  • the role change is completed in this, shown in Figure 5 state.
  • the drive 19 is a pneumatic drive, it can also form the return element for the elastic compensation of web fluctuations. However, if it has no elasticity, because it is formed for example by a hydraulic drive or electric drive, then such a drive 19 is disengaged for the purpose of web tension compensation during machine operation.

Landscapes

  • Replacement Of Web Rolls (AREA)
  • Automatic Tape Cassette Changers (AREA)
  • Preliminary Treatment Of Fibers (AREA)

Abstract

The reel-changer incorporates a first mounting (1,4) for the working roller, and a second mounting (2,5) for the reserve roller. The reserve and working webs are joined by a connector (10). A holder (21) for fixing the working web is situated down-path from the connector. A traction piece (16), in the form of a tensioning device, between the connector and holder is positioned in the path of the working web and pulls the working web from being stationary away from the working roller. The traction piece consists of at least one cylinder (17) and a drive mechanism (19).

Description

Die Erfindung betrifft einen Rollenwechsler für eine bahnbearbeitende oder -verarbeitende Maschine, der für einen Rollenwechsel im Stillstand des Rollenwechslers eingerichtet ist. Die Erfindung betrifft ferner ein Verfahren für einen automatischen Rollenwechsel in solch einer Maschine, bei dem eine zu ersetzende Bahn zwar in die Maschine eingezogen ist, aber sich nicht in Produktion befindet. Solche Rollenwechsler sind z.B. aus der DE 1256501, der US 5,514,237, der US 5,064,488 und der US 4,892,263 bekannt.The invention relates to a roll changer for a web-processing or processing machine, which is set up for a roll change at standstill of the roll changer. The invention further relates to a method for an automatic reel change in such a machine, in which a web to be replaced, although retracted into the machine, but is not in production. Such reelstands are e.g. from DE 1256501, US 5,514,237, US 5,064,488 and US 4,892,263.

Rollenrotationsdruckmaschinen, die im Sinne der Erfindung bevorzugte Beispiele bahnbearbeitender Maschinen sind, weisen zumeist Rollenwechsler auf, die dazu in der Lage sind, einen sogenannten fliegenden Rollenwechsel durchzuführen. An eine in dem Rollenwechsler von einer Arbeitsrolle abwickelnden Arbeitsbahn wird bei einem fliegenden Rollenwechsel bei laufender Produktion vollautomatisch eine Vorratsbahn angefügt und mit der Arbeitsbahn verbunden. Die Vorratsbahn wickelt im Rollenwechsler von einer Vorratsrolle ab. Die Arbeitsbahn wird gekappt, und die alte Arbeitsrolle entweder ebenfalls vollautomatisch oder manuell aus dem Rollenwechsler genommen und beispielsweise gegen eine neue Vorratsrolle ersetzt. Die an die Arbeitsbahn angehängte Vorratsbahn ist die neue Arbeitsbahn.Web-fed rotary printing machines, which are preferred examples of web-processing machines for the purposes of the invention, usually have reelstands which are capable of carrying out a so-called flying reel change. At a unwinding in the reel splitter from a work roll working web is fully automatically added in a flying reel change during production a stock web and connected to the work path. The supply track winds in the roll changer from a supply roll. The work path is cut, and the old work role either also fully automatically or manually taken from the reel changer and replaced, for example, against a new supply roll. The supply track attached to the working track is the new working track.

Obgleich Rollenwechsler, die für einen fliegenden Rollenwechsel eingerichtet sind, zumindest bei großen Zeitungsrotationen Standard sind, bereitet der Rollenwechsel im Stillstand des Rollenwechslers Probleme. Insbesondere sind keine Rollenwechsler bekannt, die sowohl für einen fliegenden Rollenwechsel als auch für einen vollautomatischen Rollenwechsel im Stillstand des Rollenwechslers eingerichtet sind.Although reelstands that are set up for a flying reel change are standard, at least for large newspaper presses, the reel change causes problems when the reelstand is at a standstill. In particular, no reel changers are known which are set up both for a flying reel change and for a fully automatic reel change when the reel changer is at a standstill.

Es ist daher eine Aufgabe der Erfindung, einen automatischen Rollenwechsel im Stillstand des Rollenwechslers zu ermöglichen, vorzugsweise bei einem Rollenwechsler, mit dem ein fliegender Rollenwechsel durchführbar ist.It is therefore an object of the invention to enable an automatic roll change at standstill of the roll changer, preferably in a roll changer, with a flying role change is feasible.

Die Erfindung geht von einem Rollenwechsler für eine Bahnbearbeitungs- oder -verarbeitungsmaschine aus, der eingerichtet ist für eine Abwicklung einer zu bearbeitenden Arbeitsbahn von einer Arbeitsrolle, ein Anfügen einer Vorratsbahn an die Arbeitsbahn und ein Verbinden der beiden Bahnen miteinander. Ein bevorzugtes Beispiel einer Bahnbearbeitungsmaschine ist eine Rollenrotationsdruckmaschine, vorzugsweise eine Offsetdruckmaschine für den Zeitungsdruck, insbesondere den Zeitungsdruck in großen Auflagen. Die Maschine kann jedoch auch eine Bahnbearbeitungs- oder -verarbeitungsmaschine für Kunststoff oder Metall und grundsätzlich für jedes bahnförmige Gut sein, beispielsweise eine Kunststofffolie, eine Metallfolie, besonders bevorzugt jedoch Papier. Als Arbeitsbahn im Sinne der Erfindung wird diejenige Bahn bezeichnet, die bereits in die Maschine eingezogen ist und die durch die Vorratsbahn ersetzt werden soll, beispielsweise nach Verbrauch.The invention is based on a reel splicer for a web processing machine, which is set up for processing a work web to be processed from a work roll, attaching a supply web to the work web and connecting the two webs to one another. A preferred example of a web-processing machine is a web-fed rotary printing press, preferably an offset press for newspaper printing, especially newspaper printing in large runs. However, the machine may also be a web-processing machine for plastic or metal and basically any web-like material, for example a plastic film, a metal foil, but more preferably paper. As a work path in the context of the invention, the one web is referred to, which is already fed into the machine and is to be replaced by the supply track, for example, according to consumption.

Der Rollenwechsler weist eine erste Lagerung für die Arbeitsrolle und eine zweite Lagerung für die Vorratsrolle auf. Die Lagerungen sind im Rollenwechsler vorzugsweise derart bewegbar, dass sie im Wechsel in eine Arbeitsposition und in eine Austauschposition bewegbar sind. Die Arbeitsposition bildet vorteilhafterweise auch gleich eine Fügeposition, die bei einem Fügen durch Kleben eine Klebeposition ist. Bevorzugt werden die Lagerungen durch Rollenarme gebildet, die im Wechsel in die Arbeitsposition und in die Austauschposition schwenkbar sind. Der Rollenwechsler umfasst ferner eine Verbindungseinrichtung für das Verbinden der Vorratsbahn mit der Arbeitsbahn. Vorzugsweise ist die Verbindungseinrichtung als Klebeeinrichtung ausgebildet, um eine Klebeverbindung zwischen der Arbeitsbahn und der Vorratsbahn herzustellen. Dies ist die heutzutage übliche Verbindungstechnik für Papierbahnen im Rollenrotationsdruck. Bei Maschinen zur Bearbeitung oder Verarbeitung von Kunststofffolien kann die Verbindungseinrichtung aber beispielsweise auch von einer Schweißeinrichtung gebildet werden; ebenso bei Maschinen zur Be- oder Verarbeitung von metallischen Bahnen. Andere geeignete Verbindungstechniken sollen jedoch ebenfalls nicht ausgeschlossen sein, auch nicht für Papierbahnen.The reel changer has a first storage for the work roll and a second storage for the supply roll. The bearings are preferably movable in the reel changer so that they are movable in alternation in a working position and in an exchange position. The working position advantageously also forms a joining position, which is an adhesive position when joined by gluing. Preferably, the bearings are formed by roller arms, which are pivotable alternately in the working position and in the replacement position. The roll changer further comprises a connecting device for connecting the supply web with the working web. The connecting device is preferably designed as an adhesive device in order to produce an adhesive bond between the working web and the supply web. This is the usual connection technology for webs in web-fed rotary printing. In machines for processing or processing plastic films, however, the connecting device can also be formed, for example, by a welding device; also with machines for working or processing of metallic tracks. However, other suitable joining techniques should also not be excluded, even for paper webs.

Der Rollenwechsler umfasst des Weiteren eine Halteeinrichtung, die in Förderrichtung der Arbeitsbahn hinter der Verbindungseinrichtung, d.h. bahnabwärts der Verbindungseinrichtung, angeordnet ist. Die Halteeinrichtung ist so ausgebildet, dass sie die Arbeitsbahn in Bezug auf die Förderrichtung fixieren, vorzugsweise vollständig blockieren, kann. Die Fixierung erfolgt vorzugsweise ausschließlich reibschlüssig, besonders bevorzugt durch Klemmen der Arbeitsbahn.The roll changer further comprises a holding device, which in the conveying direction of the working path behind the connecting device, i. down the connection device is arranged. The holding device is designed such that it can fix, preferably completely block, the working path in relation to the conveying direction. The fixation is preferably carried out exclusively by frictional engagement, particularly preferably by clamping the work path.

Der Rollenwechsler umfasst schließlich eine Zugeinrichtung für die Arbeitsbahn. Die Zugeinrichtung ist im Bahnweg der Arbeitsbahn zwischen der Verbindungseinrichtung und der Halteeinrichtung angeordnet und dazu eingerichtet bzw. so ausgebildet, dass sie die Arbeitsbahn von der Arbeitsrolle ziehen kann. Das Abziehen von der Arbeitsrolle erfolgt entweder gänzlich ohne Motorunterstützung oder mit Motorunterstützung oder sogar gegen eine Bremskraft, die von einem Antriebsmotor oder einer zusätzlichen Bremse erzeugt sein kann. In jedem Fall wird mittels der Zugeinrichtung, gegebenenfalls im Zusammenwirken mit einem Drehantrieb der Arbeitsrolle oder einer Bremse für die Arbeitsrolle, während des Abziehens eine vorteilhafte Bahnspannung erzeugt und aufrechterhalten. Bei der Zugeinrichtung kann es sich zwar um eine Zugeinrichtung handeln, mit der die Bahn auch bei laufender Produktion gefördert wird, vorzugsweise wird die Bahn jedoch mittels der Zugeinrichtung nur im Stillstand des Rollenwechslers eine Weglänge weit gefördert, die aber natürlich ausreichend groß sein muss, um die Verbindung der Vorratsbahn mit der Arbeitsbahn herstellen und den automatischen Rollenwechsel bei fixierter Arbeitsbahn durchführen zu können. Falls die Zugeinrichtung die Bahn auch in der laufenden Produktion fördert, dann erfolgt dies vorzugsweise nur zeitweise.The reel changer finally includes a draw gear for the work path. The traction device is arranged in the path of the work path between the connecting device and the holding device and set up or designed so that it can pull the working web from the work roll. The removal from the work roll is either entirely without engine assistance or with engine assistance or even against a braking force that may be generated by a drive motor or an additional brake. In any case, an advantageous web tension is generated and maintained by means of the pulling device, optionally in conjunction with a rotary drive of the work roll or a brake for the work roll, during the peeling. Although the traction device may be a traction device with which the web is also conveyed during ongoing production, the trajectory is preferably conveyed by the traction device only when the reelstand is at a standstill, but this length must of course be sufficiently great make the connection of the supply track with the work path and perform the automatic role change at a fixed work path can. If the towing device promotes the web in the current production, this is preferably done only temporarily.

Eine besonders elegante Lösung ist die Verwendung einer Spanneinrichtung, die bei laufender Produktion der Maschine einem Ausgleich von Bahnspannungsschwankungen dient, als Zugeinrichtung. Hierzu eignen sich bekannte Bahnspannungseinrichtungen, wie beispielsweise schwenkbar oder linear bewegbar gelagerte Pendelwalzen und äquivalente Rolleneinrichtungen, die von der Bahn umschlungen werden und durch ihre eigene Bewegung quer zu ihrer Längsachse die Bahnspannung regulieren, indem sie die Länge des Bahnwegs verändern. Das von der Bahn umschlungene Spannelement, ein Zylinderkörper im Falle einer Walze oder gegebenenfalls auch nur eine einfache Stange oder die mehreren Zylinderkörper im Falle einer Rolleneinrichtung, ist gegen die Elastizitätskraft eines Rückstellelements quer zu seiner Längsachse bewegbar gelagert. In der erfindungsgemäßen Weiterbildung zu einer Zugeinrichtung ist das Spannelement ferner mit einem diese Querbewegung bewirkenden Antrieb gekoppelt. Der Antrieb kann beispielsweise ein Elektromotor oder ein Fluidantrieb, insbesondere eine Kolben-Zylinder-Anordnung, sein. Solch eine von Spanneinrichtungen bekannte Zugeinrichtung kann auch nur als Zugeinrichtung verwendet werden und muss nicht als Spanneinrichtung verwendet werden. Ein Rückstellelement zur Erzeugung einer rückstellenden Elastizitätskraft muss demgemäß nicht unbedingt vorhanden sein.A particularly elegant solution is the use of a clamping device, which serves to compensate for web tension fluctuations during ongoing production of the machine, as a pulling device. For this purpose, known web tension devices, such as For example, pivotally or linearly movably supported pendulum rollers and equivalent roller devices, which are wrapped by the web and regulate the web tension by their own movement transversely to their longitudinal axis by changing the length of the web path. The tensioned by the web clamping element, a cylinder body in the case of a roller or possibly even a simple rod or the plurality of cylinder body in the case of a roller device is mounted movable against the elasticity of a return element transverse to its longitudinal axis. In the development according to the invention to a traction device, the clamping element is further coupled with a drive causing this transverse movement. The drive may be, for example, an electric motor or a fluid drive, in particular a piston-cylinder arrangement. Such a pulling device known from tensioning devices can also be used only as a pulling device and does not have to be used as a tensioning device. A restoring element for generating a restoring elasticity force does not necessarily have to be present accordingly.

Die Halteeinrichtung kann grundsätzlich von einer oder mehreren dem Rollenwechsler im Weg der Arbeitsbahn folgenden Be- oder Verarbeitungseinrichtungen der Maschine gebildet werden, die für die Zwecke der Erfindung in solcher Ausbildung der Halteeinrichtung als zum Rollenwechsler gehörig gezählt wird bzw. werden. Vorzugsweise wird die Halteeinrichtung jedoch auf dem Bahnweg der Arbeitsbahn vor der ersten Be- oder Verarbeitungseinrichtung gebildet, die auf die erfindungsgemäße Zugeinrichtung folgt, um einen kurzen Bahnweg zwischen der Zugeinrichtung und der Halteeinrichtung zu erhalten. Durch die Halteeinrichtung ist sicher zu stellen, dass die stillstehende Arbeitsbahn mittels der Zugeinrichtung auch tatsächlich um eine ausreichende Bahnlänge von der Arbeitsrolle gezogen werden kann. Die Arbeitsbahn muss zumindest um solch eine Länge ausgezogen werden, dass die Verbindung mit der Arbeitsbahn hergestellt werden kann. Vorzugsweise sollte auch noch der Bahnanfang der Vorratsrolle durch das Ausziehen von der Vorratsrolle abgelöst werden. Die Halteeinrichtung muss die Bahn daher zumindest in dem Sinne fixieren, dass mittels der Zugeinrichtung nicht die Arbeitsbahn aus der Maschine heraus in Richtung Rollenwechsler gezogen wird, während ein Abziehen oder Herausziehen der Arbeitsbahn von der Arbeitsrolle nicht in einem ausreichenden Ausmaß stattfindet.The holding device can in principle be formed by one or more of the roll changer in the path of the work following loading or processing facilities of the machine, which is counted for the purposes of the invention in such a design of the holding device belonging to the reel splitter or be. Preferably, however, the holding device is formed on the web path of the work path in front of the first processing or processing device, which follows the traction device according to the invention, to obtain a short path between the traction device and the holding device. By means of the holding device, it must be ensured that the stationary working path can actually be pulled by the pulling device by a sufficient track length from the working roller. The work path must be pulled out at least by such a length that the connection to the work path can be made. Preferably, the web start of the supply roll should be replaced by the withdrawal from the supply roll. The holding device must therefore fix the web at least in the sense that by means of the pulling device not the working path out of the machine in the direction Reel changer is pulled while a withdrawal or withdrawal of the working web from the work roll does not take place to a sufficient extent.

In einer Rollenrotationsdruckmaschine kann die Halteeinrichtung insbesondere von einer Zugwalze oder mehreren Zugwalzen gebildet werden, die im Weg der Arbeitsbahn vor dem ersten Druckwerk angeordnet ist bzw. sind, insbesondere von einem Einzugswerk für das Druckwerk oder mehrere Druckwerke. Sinngemäß gilt dies für die entsprechenden Einrichtungen bei anderen bahnbearbeitenden oder -verarbeitenden Maschinen ebenso. Für den Rollenwechsel im Stillstand wird solch eine Zugwalze oder werden die mehreren Zugwalzen festgesetzt, d.h. die Zugwalze oder Zugwalzen ist oder sind vorzugsweise blockierbar. Falls der Reibungskoeffizient zwischen der Bahn und solch einer Zugwalze oder mehreren Zugwalzen bereits für eine Fixierung der Bahn ausreicht, kann eine von Hause aus bereits vorhandene Zugeinrichtung die erfindungsgemäße Halteeinrichtung unmittelbar bilden. Bevorzugt wird jedoch benachbart zu einem der erfindungsgemäßen Zugeinrichtung nächst folgenden Zugelement, insbesondere Zugwalze, ein Andrückelement so angeordnet, dass das Andrückelement gegen das Zugelement gedrückt werden kann, um die Bahn zwischen dem Zugelement und dem Andrückelement einzuklemmen und so festzuhalten, dass die Bahn durch die Aktion der erfindungsgemäßen Zugeinrichtung nicht rückwärts eingezogen werden kann.In a web-fed rotary printing press, the holding device can in particular be formed by a draw roller or a plurality of draw rollers, which are or are arranged in the path of the work path in front of the first printing unit, in particular by an infeed mechanism for the printing unit or several printing units. This applies analogously to the corresponding devices in other web-processing or processing machines as well. For the roll change at standstill such a tension roller or the plurality of tension rollers is set, i. the tension roller or tension rollers is or are preferably blockable. If the coefficient of friction between the web and such a tension roller or a plurality of tension rollers is already sufficient for a fixation of the web, an already existing traction device can directly form the holding device according to the invention. Preferably, however, adjacent to one of the traction device according to the invention next following tension element, in particular tension roller, a pressure element arranged so that the pressure element can be pressed against the tension member to clamp the web between the tension member and the pressure element and hold so that the web through the Action of the pulling device according to the invention can not be retracted backwards.

Bei einem erfindungsgemäßen Verfahren für einen automatischen Stillstands-Rollenwechsel in einer Bahnbearbeitungsmaschine werden zumindest die folgenden Arbeitsgänge durchgeführt: Es wird die Vorratsrolle bis in eine Fügeposition bewegt. In der Fügeposition liegt die zu der Vorratsrolle aufgewickelte Vorratsbahn der in die Maschine eingezogenen Arbeitsbahn parallel in einem Abstand gegenüber, so dass die Vorratsbahn im Falle ihrer Abwicklung exakt in Deckung mit der Arbeitsbahn zu liegen kommt. Die Arbeitsbahn wird in der Fügeposition der Vorratsrolle an einen Bahnanfang einer äußersten Bahnlage der Vorratsrolle gedrückt und mit diesem Bahnanfang verbunden. Die Arbeitsbahn wird bahnabwärts von dem Bahnanfang der Vorratsrolle fixiert, vorzugsweise so festgeklemmt, dass sie sich unter dem Einfluss der für den Rollenwechsel wirkenden Zugkräfte am Ort der Fixierung nicht oder zumindest nicht in einem praktisch relevanten Ausmaß in Bahnlängsrichtung bewegt. Die Fixierung wird vorzugsweise vor dem Herstellen der Verbindung durchgeführt. Die Fixierung kann nach dem Andrücken der Arbeitsbahn an die Vorratsrolle oder bevorzugt vor dem Andrücken vorgenommen werden. Es soll auch nicht ausgeschlossen werden, dass die Arbeitsbahn bereits fixiert wurde, bevor die Vorratsrolle die Fügeposition eingenommen hat. Nach dem Herstellen der Verbindung wird auf die fixierte Arbeitsbahn an einer Stelle zwischen dem Bahnanfang der Vorratsrolle und der Stelle der Fixierung eine Zugkraft ausgeübt und die Arbeitsbahn hierdurch von der Arbeitsrolle gezogen. Schließlich wird die Arbeitsbahn an einer Stelle zwischen der Arbeitsrolle und dem Bahnanfang der Vorratsrolle durchgetrennt.In a method according to the invention for an automatic standstill roll change in a web processing machine, at least the following operations are performed: The supply roll is moved to a joining position. In the joining position, the supply web wound up into the supply roll lies parallel to the working web drawn into the machine at a distance, so that in the case of its development the supply web comes to lie exactly in coincidence with the working web. The work path is pressed in the joining position of the supply roll to a web start of an outermost web layer of the supply roll and connected to this web start. The work path is fixed down the track from the web start of the supply roll, preferably clamped so that they are under the influence of for the Reel change acting tensile forces at the location of fixation not or at least not moved to a practically relevant extent in the web longitudinal direction. The fixation is preferably carried out before the connection is made. The fixation can be made after pressing the working web to the supply roll or preferably before pressing. It should also not be ruled out that the work path has already been fixed before the supply roll has taken the joining position. After making the connection, a tensile force is exerted on the fixed work path at a point between the web start of the supply roll and the point of fixation and the work path thereby pulled from the work roll. Finally, the work path is severed at a point between the work roll and the web start of the supply roll.

Während des Ausziehvorgangs von der Arbeitsrolle wird die Abwicklung der Arbeitsbahn von der Arbeitsrolle kontrolliert, beispielsweise indem die Arbeitsrolle in einer auf die Ausziehgeschwindigkeit der erfindungsgemäßen Zugeinrichtung abgestimmten Art und Weise von einem Drehantriebsmotor angetrieben wird. Anstatt durch einen in diesem Sinne abgestimmten, vorzugsweise geregelten Antrieb der Arbeitsrolle, kann die kontrollierte Abwicklung ebenfalls vorteilhaft auch durch ein kontrolliertes Bremsen der Arbeitsrolle bewirkt werden, um eine für das Ausziehen günstige Bahnspannung einzustellen.During the pull-out operation of the work roll, the unwinding of the work web from the work roll is controlled, for example by the work roll being driven by a rotary drive motor in a manner adapted to the pull-out speed of the towing device according to the invention. Instead of by a coordinated in this sense, preferably controlled drive the work role, the controlled development can also be advantageously effected by a controlled braking of the work roll to adjust a favorable for the withdrawal web tension.

Ein bevorzugtes Ausführungsbeispiel der Erfindung wird nachfolgend anhand von Figuren erläutert. An dem Ausführungsbeispiel offenbar werdende Merkmale bilden je einzeln und in jeder Merkmalskombination die Gegenstände der Ansprüche vorteilhaft weiter. Es zeigen:

Figur 1
einen Rollenwechsler mit einer verbrauchten Arbeitsrolle und einer neuen Vorratsrolle vor einem Rollenwechsel,
Figur 2
den Rollenwechsler in einem Zustand, in dem eine von der Arbeitsrolle ablaufende Arbeitsbahn an die Vorratsrolle angedrückt ist,
Figur 3
den Rollenwechsler nach einem teilweisen Ausziehen der Arbeitsbahn,
Figur 4
den Rollenwechsler nach Ablösen einer Vorratsbahn von der Vorratsrolle und
Figur 5
den Rollenwechsler nach dem Rollenwechsel.
A preferred embodiment of the invention will be explained below with reference to figures. The features disclosed in the exemplary embodiment advantageously each individually and in each combination of features form the subject matter of the claims. Show it:
FIG. 1
a roll changer with a used work roll and a new supply roll before a roll change,
FIG. 2
the reel changer in a state in which a working web running from the work roll is pressed against the supply roll,
FIG. 3
the reel changer after a partial removal of the working web,
FIG. 4
the reel changer after detachment of a supply web of the supply roll and
FIG. 5
the reel changer after the roll change.

Die Figuren zeigen einen Rollenwechsler für Rollenrotationsdruckmaschinen, der zur Aufnahme von zwei Papierrollen R1 und R2 eingerichtet ist. Er weist einen ersten Rollenarm 1 auf, der die Rolle R1 um eine Drehachse 4 drehbar lagert. Die Rolle R1 bildet eine Arbeitsrolle, von der eine in die Druckmaschine eingezogene Arbeitsbahn A abwickelt. Die andere Rolle R2 ist an einem zweiten Rollenarm 2 um eine von diesem Rollenarm 2 gebildete Drehachse 5 ebenfalls drehbar gelagert. Die zweite Rolle R2 ist eine Vorratsrolle einer Vorratsbahn V, welche die nahezu verbrauchte Arbeitsrolle R1 ersetzen soll. Ein Motor M1 bildet einen Drehantrieb für die Arbeitsrolle R1, der im Betrieb der Maschine die Arbeitsrolle R1 um die Drehachse 4 drehantreibt. Ein ebensolcher Motor M2 bildet einen Drehantrieb für die Vorratsrolle R2, um die Vorratsrolle R2 um deren Drehachse 5 drehanzutreiben.The figures show a roll changer for web-fed rotary printing presses which is set up to receive two rolls of paper R1 and R2. It has a first roller arm 1 which rotatably supports the roller R1 about a rotation axis 4. The roller R1 forms a working roll from which a working web A drawn into the printing press unwinds. The other roller R2 is also rotatably mounted on a second roller arm 2 about an axis of rotation 5 formed by this roller arm 2. The second roll R2 is a supply roll of a supply web V, which is to replace the almost used work roll R1. A motor M1 forms a rotary drive for the work roll R1, which rotates the work roll R1 about the rotation axis 4 during operation of the machine. A similar motor M2 forms a rotary drive for the supply roll R2 in order to drive the supply roll R2 about its axis of rotation 5.

Die beiden Rollenarme 1 und 2 bilden fluchtende Schwenkarme um eine gemeinsame Schwenkachse 3. Ein weiterer Motor M3 bildet einen Schwenkantrieb zum Schwenken der Rollenarme 1 und 2 um die Schwenkachse 3. Durch die Schwenkbewegung gegen den Uhrzeigersinn kann der Rollenarm 2 in die für den Rollenarm 1 in den Figuren dargestellte Schwenkposition geschwenkt werden. Entsprechend wird bei solch einer Schwenkbewegung der Rollenarm 1 in die in den Figuren für den Rollenarm 2 gezeigte Schwenkposition geschwenkt. Des Weiteren sind zwei Umlenkwalzen 9 an Schwenkarmen um die Schwenkachse 3 schwenkbar. Die Schwenkarme für die Umlenkwalzen 9 sind drehsteif mit den Rollenarmen 1 und 2 verbunden und bilden mit diesen ein Kreuz.The two roller arms 1 and 2 form aligned pivot arms about a common pivot axis 3. Another motor M3 forms a pivot drive for pivoting the roller arms 1 and 2 about the pivot axis 3. The pivotal movement in the counterclockwise direction, the roller arm 2 in the for the roller arm. 1 be pivoted in the figures shown pivot position. Accordingly, in such a pivotal movement of the roller arm 1 is pivoted in the pivot position shown in the figures for the roller arm 2. Furthermore, two guide rollers 9 are pivotable on pivot arms about the pivot axis 3. The pivot arms for the guide rollers 9 are torsionally rigidly connected to the roller arms 1 and 2 and form a cross with these.

Zusätzlich zu der beschriebenen Lagereinrichtung für die Rollen R1 und R2 umfasst der Rollenwechsler entlang eines für die Arbeitsbahn A gebildeten Bahnwegs eine Verbindungseinrichtung 10, eine Zugeinrichtung 16 und eine Halteeinrichtung 21.In addition to the described bearing device for the rollers R1 and R2, the reel changer comprises a connecting device 10, a pulling device 16 and a holding device 21 along a path formed for the working path A.

Die Verbindungseinrichtung 10 ist als Klebeeinrichtung ausgebildet. Sie umfasst als Fügeelement eine Klebewalze 14, die an einem Schwenkarm 11 der Vorratsrolle R2 gegenüberliegend drehgelagert ist. Der Schwenkarm 11 ist um eine Schwenkachse 12 schwenkbar, die parallel zu der Drehachse 5 der Vorratsrolle R2 weist. Auch die Drehachse der Klebewalze 14 weist parallel zu der Drehachse 5. Die Klebewalze 14 ist, wie in Figur 1 angedeutet, mittels der Schwenkbewegung um die Schwenkachse 12 an die Vorratsrolle R2 andrückbar. Die Schwenkbewegung zu der Vorratsrolle R2 hin und von der Vorratsrolle R2 weg wird mittels eines Schwenkantriebs 13 bewirkt, der von einer Kolben-Fluidzylinder-Anordnung gebildet wird. Die Arbeitsbahn A wird in der in den Figuren dargestellten Position der Arbeitsrolle R1 zwischen der Vorratsrolle R2 und der Klebewalze 14 hindurchgeführt.The connecting device 10 is designed as an adhesive device. It comprises, as a joining element, an adhesive roller 14, which is rotatably mounted on a pivoting arm 11 of the supply roll R2 opposite. The pivot arm 11 is pivotable about a pivot axis 12 which is parallel to the axis of rotation 5 of the supply roll R2. Also, the axis of rotation of the adhesive roller 14 has parallel to the axis of rotation 5. The adhesive roller 14 is, as indicated in Figure 1, pressed by means of the pivoting movement about the pivot axis 12 to the supply roll R2. The pivoting movement towards the supply roll R2 and away from the supply roll R2 is effected by means of a pivot drive 13, which is formed by a piston-fluid-cylinder arrangement. The working web A is guided in the position of the work roll R1 shown in the figures between the supply roll R2 and the adhesive roll 14.

Im Bahnweg der Arbeitsbahn A unmittelbar hinter der Verbindungseinrichtung 10 ist die Zugeinrichtung 16 angeordnet. Die Zugeinrichtung 16 umfasst einen Zylinderkörper 17, der an einem Schwenkarm um eine Schwenkachse 18 schwenkbar gelagert ist. Der Zylinderkörper 17 ist um seine Längsachse frei drehbar gelagert und wird im Ausführungsbeispiel von einem bahnbreiten Walzenkörper gebildet. Die Arbeitsbahn A umschlingt den Zylinderkörper 17 mit einem Umschlingungswinkel von mehr als 90° und wird bahnabwärts von dem Zylinderkörper 17 um eine Umlenkwalze 20 umgelenkt. Die Arbeitsbahn A ist zwischen der Umlenkwalze 9 der Rollenlagerung und dem Zylinderkörper 17 frei gespannt, d.h. es befinden sich in diesem Teil des Bahnwegs keine weiteren Umlenkelemente. Lediglich die Verbindungseinrichtung 10 wirkt zur Herstellung der Fügeverbindung in diesem Bahnabschnitt auf die Arbeitsbahn A. Grundsätzlich können jedoch vor und/oder hinter der Verbindungseinrichtung 10 weitere Umlenkkörper angeordnet sein.In the path of the work A, immediately behind the connecting device 10, the pulling device 16 is arranged. The pulling device 16 comprises a cylinder body 17, which is pivotably mounted on a pivoting arm about a pivot axis 18. The cylinder body 17 is freely rotatably mounted about its longitudinal axis and is formed in the embodiment of a web-width roller body. The working path A wraps around the cylinder body 17 with a wrap angle of more than 90 ° and is deflected down the track of the cylinder body 17 about a guide roller 20. The working path A is freely stretched between the guide roller 9 of the roller bearing and the cylinder body 17, i. There are no other deflecting elements in this part of the railway. Only the connecting device 10 acts to produce the joint connection in this track section on the working path A. Basically, however, before and / or behind the connecting device 10 further deflecting be arranged.

Der Zylinderkörper 17 bildet vorzugsweise wie im Ausführungsbeispiel eine an sich bekannte Pendelwalze, die dem Ausgleich von Bahnspannungsschwankungen dient. Der Zylinderkörper 17 ist dementsprechend gegen eine Elastizitätskraft eines Rückstellelements, beispielsweise eine Druckfeder oder ein fluidbeaufschlagter Zylinder, um die Schwenkachse 18 schwenkbar, wobei der Zylinderkörper 17 von der umschlingenden Arbeitsbahn A aufgrund der Bahnspannung gegen die Kraft des Rückstellelements bewegt wird. Die Zugeinrichtung 16 ist mit einem Antrieb 19 ausgestattet, der entsprechend der beispielhaft gewählten Pendelwalzenanordnung als Schwenkantrieb ausgebildet ist. Der Antrieb 19 ist vorzugsweise eine Kolben-Fluidzylinder-Anordnung und dient dem Schwenken des Zylinderkörpers 17 um die Schwenkachse 18. In den Figuren sind eine mittlere Normal- oder Sollposition und zwei beidseits der mittleren Position gelegene Positionen des Zylinderkörpers 17 dargestellt.The cylinder body 17 preferably forms a per se known pendulum roller, as in the embodiment, which serves to compensate for web tension fluctuations. The cylinder body 17 is accordingly against a resilience of a return element, such as a compression spring or a fluidbeaufschlagter cylinder, pivotable about the pivot axis 18, wherein the cylinder body 17 of the looping work A is moved due to the web tension against the force of the return element. The traction device 16 is equipped with a drive 19, which is designed according to the exemplified pendulum roller assembly as a pivot drive. The drive 19 is preferably a piston-fluid cylinder arrangement and serves to pivot the cylinder body 17 about the pivot axis 18. In the figures, an average normal or nominal position and two positions of the cylinder body 17 located on both sides of the central position are shown.

Im Bahnweg der Arbeitsbahn A folgt auf die derart gebildete Spann- und Zugeinrichtung 16 die Halteeinrichtung 21. Die Halteeinrichtung 21 umfasst einen drehangetriebenen Zylinderkörper 22, der von der Arbeitsbahn A umschlungen wird. Im Ausführungsbeispiel ist der Zylinderkörper 22, wie dies bevorzugt wird, eine Zugwalze. Zwischen der Umlenkwalze 20 der Spann- und Zugeinrichtung 16 und der Zugwalze 22 ist die Arbeitsbahn A frei gespannt, d.h. es wirken in diesem Bahnabschnitt keine weiteren Elemente auf die Arbeitsbahn A. Grundsätzlich können jedoch Umlenkkörper dazwischen angeordnet sein. Die Halteeinrichtung 21 wird vorzugsweise von einer von Hause aus vorhandenen Zugeinrichtung gebildet, die zwischen der Spann- und Zugeinrichtung 16 und dem im Bahnweg nächstgelegenen Druckwerk der Maschine angeordnet ist. Falls solch ein Einzugswerk mehrere Zugwalzen aufweist, bildet vorzugsweise die im Bahnweg der Spann- und Zugeinrichtung 16 nächstgelegene Zugwalze den Zylinderkörper 22. Um sicherzustellen, dass die Arbeitsbahn A im Bedarfsfall von der Halteeinrichtung 21 so fixiert werden kann, dass sie sich unter dem Einfluss der bei einem Rollenwechsel wirksamen Zugkräfte nicht bewegt, ist dem Zylinderkörper 22 gegenüberliegend ein von einem Klemmelement 23 gebildetes Blockierelement angeordnet, das an den Zylinderkörper 22 an und von dem Zylinderkörper 22 abgestellt werden kann, beispielsweise im Wege einer Schwenklagerung des Klemmelements 23. Das Klemmelement 23 wird bei Ausbildung des Zylinderkörpers 22 als Walze vorzugsweise ebenfalls von einem Walzenkörper gebildet, der zum Zwecke der Fixierung der Arbeitsbahn A allerdings um seine eigene Längsachse nicht drehbar ist.In the path of the work path A follows on the thus formed tensioning and pulling device 16, the holding device 21. The holding device 21 includes a rotationally driven cylinder body 22 which is looped by the working line A. In the exemplary embodiment, the cylinder body 22, as is preferred, a draw roller. Between the guide roller 20 of the tensioning and pulling device 16 and the tension roller 22, the working path A is tensioned freely, ie, no further elements act on the working path A in this path section. In principle, however, deflecting elements can be arranged therebetween. The holding device 21 is preferably formed by a home-made pulling device, which is arranged between the tensioning and pulling device 16 and the closest in the web path printing unit of the machine. If such an intake train has a plurality of draw rollers, preferably the train roller closest to the tensioning and pulling device 16 forms the cylinder body 22. To ensure that the work path A can be fixed by the holding device 21 in such a way that it can be subject to the influence of the When a roller change effective tensile forces is not moved, the cylinder body 22 opposite a formed by a clamping element 23 blocking element is arranged, which can be turned off to the cylinder body 22 and from the cylinder body 22, for example by means of a pivotal mounting of the clamping element 23. The clamping element 23 when forming the cylinder body 22 as a roller preferably also formed by a roller body which is not rotatable for the purpose of fixing the working path A about its own longitudinal axis.

Schließlich umfasst der Rollenwechsler noch einen auf die Oberfläche der Vorratsrolle R2 gerichteten Sensor 7. Der Sensor 7 dient der Detektion einer Klebestelle 6, an der ein Bahnanfang der Vorratsbahn V an eine nächste Bahnlage der Vorratsrolle R2 geklebt ist.Finally, the roll changer also comprises a sensor 7 directed onto the surface of the supply roll R2. The sensor 7 serves to detect a splice 6 on which a web start of the supply web V is glued to a next web layer of the supply roll R2.

Einer Steuerungseinrichtung 24 werden die Signale des Sensors 7 zugeleitet. Die Steuerungseinrichtung 24 dient der Steuerung und vorzugsweise auch Regelung der Antriebe M1, M2, M3, 13 und 19, eines Drehantriebs für den Zylinderkörper 22 und eines Antriebs für das An- und Abstellen des Klemmelements 23. Die entsprechenden Verbindungen mit den genannten Antrieben zur Übermittlung der Stellsignale sind in strichlierten Linien eingezeichnet. Die Verbindung kann jeweils leitungsgebunden oder leitungslos, beispielsweise per Funk oder optisch, ausgeführt sein. Mittels der Steuerungseinrichtung 24 wird der Rollenwechsel zumindest nach einem gegebenenfalls manuellen Einsetzen der Vorratsrolle R2 und Entnehmen der alten, beispielsweise verbrauchten Arbeitsrolle R1 automatisch ausgeführt. Dies gilt für einen fliegenden Rollenwechsel bei laufender Produktion und, nach der Erfindung, auch für einen im Stillstand des Rollenwechslers auszuführenden Rollenwechsel.A control device 24, the signals of the sensor 7 are supplied. The control device 24 is used to control and preferably also control of the drives M1, M2, M3, 13 and 19, a rotary drive for the cylinder body 22 and a drive for switching on and off of the clamping element 23. The corresponding connections with the said drives for transmission the control signals are shown in dotted lines. The connection can in each case be wired or wireless, for example by radio or optical, executed. By means of the control device 24, the roll change is carried out automatically at least after an optionally manual insertion of the supply roll R2 and removal of the old, for example, used work roll R1. This applies to a flying reel change during production and, according to the invention, also for a reel change to be performed at standstill of the reel changer.

Ein automatischer Rollenwechsel im Stillstand wird nachfolgend beschrieben. Die zeitliche Ablaufsequenz beim Stillstandswechsel ist in den Figuren 1 bis 5 dargestellt.An automatic roll change at standstill is described below. The time sequence sequence during standstill change is shown in FIGS. 1 to 5.

Figur 1 zeigt den Rollenwechsler mit eingezogener Arbeitsbahn A. Die von der Arbeitsrolle R1 abgewickelte Arbeitsbahn A ist zunächst über die eine der Umlenkwalzen 9 und zwischen der Vorratsrolle R2 und der Verbindungseinrichtung 10 hindurch zu der Spann- und Zugeinrichtung 16 geführt, umschlingt den Zylinderkörper 17 um etwa 140°, wird unmittelbar hinter dem Zylinderkörper 17 von der Umlenkwalze 20 zu dem Zylinderkörper 22 der Halteeinrichtung 21 umgelenkt, umschlingt den Zylinderkörper 22 um vorzugsweise wenigstens 90° und ist von dort schließlich durch den ersten Druckspalt der Druckmaschine geführt. In dem in Figur 1 dargestellten Zustand des Rollenwechslers befindet sich die Arbeitsrolle R1 in einer Arbeitsposition und die Vorratsrolle R2 in einer Füge- bzw. Klebeposition, aus der sie nach dem Kleben zusammen in eine Arbeitsposition für die jetzige Vorratsrolle und neue Arbeitsrolle R2 weitergeschwenkt werden. Der Schwenkarm 11 mit der Klebewalze 14 befindet sich in einer Ausgangsposition, in der die Arbeitsbahn A nicht berührt wird, d.h. die Arbeitsbahn A läuft in dem gezeigten Zustand zwischen der Vorratsrolle R2 und der Verbindungseinrichtung 10 frei durch. Der Zylinderkörper 17 der Spann- und Zugeinrichtung 16 wird durch den Antrieb der Arbeitsrolle R1 mittels der Arbeitsbahn A, d.h. durch deren Bahnspannung, in einer vorderen Position gehalten, in der der Bahnweg zwischen den einander nächstgelegenen Umlenkwalzen 9 und 20 zu beiden Seiten des Zylinderkörpers 17 seine geringste Länge aufweist. Die Arbeitsbahn A wird bereits von der Halteeinrichtung 21 fixiert, indem das Klemmelement 23 mit einer Presskraft gegen den Zylinderkörper 22 gedrückt ist und die Bahn A in der zwischen dem Zylinderkörper 22 und dem an seiner Oberfläche vorzugsweise elastisch nachgiebigen Klemmelement 23 gebildeten Klemmstelle fest eingeklemmt ist.Figure 1 shows the reel changer with retracted work A. The unwound from the work roll R1 working web A is first performed on one of the guide rollers 9 and between the supply roll R2 and the connecting device 10 through to the tensioning and pulling device 16, wraps around the cylinder body 17 about 140 °, is deflected immediately behind the cylinder body 17 from the guide roller 20 to the cylinder body 22 of the holding device 21, wraps around the cylinder body 22 by preferably at least 90 ° and is finally guided from there through the first printing nip of the printing press. In the state of the roll changer shown in Figure 1, the work roll R1 is in a working position and the supply roll R2 in a joining or gluing position, from which they together after gluing into a working position for the current supply roll and new work roll R2 be pivoted further. The pivot arm 11 with the adhesive roller 14 is in an initial position in which the working path A is not touched, that is, the working path A runs freely in the state shown between the supply roll R2 and the connecting device 10. The cylinder body 17 of the tensioning and pulling device 16 is held by the drive of the work roll R1 by means of the working web A, ie by their web tension, in a forward position in which the web path between the next adjacent guide rollers 9 and 20 on both sides of the cylinder body 17th has its smallest length. The working path A is already fixed by the holding device 21 by the clamping element 23 is pressed with a pressing force against the cylinder body 22 and the web A is firmly clamped in the nip formed between the cylinder body 22 and the surface preferably elastically resilient clamping member 23 formed.

Die Vorratsrolle R2 nimmt in dem in Figur 1 dargestellten Zustand des Rollenwechslers bereits eine definierte Drehlage ein. Hierfür wurde zuvor die Vorratsrolle R2 in der gezeigten Schwenkstellung mittels des Motors M2 gedreht. Bei dieser Drehbewegung wurde die Klebestelle 6 mit Hilfe des Sensors 7 detektiert und von der Steuerungseinrichtung 24 bestimmt. Nach der Detektion der Klebestelle 6 und der Bestimmung der Drehlage wurde die Vorratsrolle R2 mittels des Motors M2 von der Steuerungseinrichtung 24 gesteuert in die dargestellte Drehwinkelposition mit dem Drehlagewinkel α gedreht und vorzugsweise in dieser Drehposition festgesetzt. Der diese Drehposition definierende Drehlagewinkel α ist der in Winkelgrad gemessene Abstand, den die Klebestelle 6 von der Anpressstelle der Klebewalze 14 hat, wenn die Klebewalze 14 gegen die Vorratsrolle R2 gepresst wird.The supply roll R2 already assumes a defined rotational position in the state of the roll changer shown in FIG. For this purpose, the supply roll R2 was previously rotated in the illustrated pivot position by means of the motor M2. During this rotary movement, the splice 6 was detected by means of the sensor 7 and determined by the control device 24. After the detection of the splice 6 and the determination of the rotational position of the supply roll R2 was controlled by the motor M2 controlled by the controller 24 in the illustrated rotational angular position with the rotational position angle α rotated and preferably set in this rotational position. The rotational position angle α defining this rotational position is the distance, measured in angular degrees, which the splice 6 has from the contact point of the adhesive roller 14 when the adhesive roller 14 is pressed against the supply roller R2.

Figur 2 zeigt den Zustand des Rollenwechslers, nachdem die Klebewalze 14 um die Schwenkachse 12 geschwenkt und gegen die Vorratsrolle R2 angestellt wurde und nun gegen deren Oberfläche gepresst ist. Ansonsten nehmen alle weiteren Elemente des Rollenwechslers einschließlich der Halteeinrichtung 21 noch die gleichen Positionen wie in dem Zustand der Figur 1 ein. Gegebenenfalls wurde durch das Andrücken die Arbeitsrolle R1 ein wenig gedreht.Figure 2 shows the state of the roll changer after the adhesive roller 14 has been pivoted about the pivot axis 12 and against the supply roll R2 has been employed and is now pressed against its surface. Otherwise take all other elements of the roll changer including the holding device 21 still the same positions as in the state of FIG. If necessary, the work roller R1 was rotated a little by pressing.

Figur 3 zeigt die gesamte Anordnung, nachdem die Arbeitsbahn A mittels der Zugeinrichtung 16 bereits ein Stück weit gegenüber dem in Figur 2 dargestellten Zustand von der Arbeitsrolle R1 abgezogen worden ist. Um die hierfür erforderliche Zugkraft auf die Arbeitsbahn A auszuüben, wurde der Zylinderkörper 17 von dem Antrieb 19 um die Schwenkachse 18 und gegen die Bahnspannung in die in Figur 3 gezeigte, mittlere Sollposition geschwenkt. Diese Sollposition nimmt der Zylinderkörper 17 im laufenden Betrieb ebenfalls ein, schwenkt dabei allerdings frei nach Maßgabe des Zusammenwirkens der Bahnspannung und des Rückstellelements. Während des Ausziehens der Arbeitsbahn A durch die mittels dem Antrieb 19 erzwungene Schwenkbewegung des Zylinderkörpers 17 wird die Drehbewegung der Arbeitsrolle R1 mittels dem Motor M1 und/oder einer Bremse 8 derart kontrolliert, dass sich eine günstige Bahnspannung und Auszugsgeschwindigkeit einstellt. Besonders bevorzugt wird eine zusätzliche Bremse 8 hierbei nicht benötigt. Es wird vielmehr während des Ausziehens der Arbeitsbahn A der Motor M1 mit einer definierten Drehzahl angetrieben oder arbeitet sogar als Bremsgenerator, und es wird der Zylinderkörper 17 von dem Antrieb 19 mit einer definierten Rückstellkraft beaufschlagt, so dass der Zylinderkörper 17 die mittlere Sollposition einnimmt. Die Ausziehbewegung der Arbeitsbahn A ist in Figur 3 mit zwei ausgezogenen Pfeilen im Bahnweg angedeutet.FIG. 3 shows the entire arrangement after the working web A has already been pulled away from the work roll R1 by a certain amount by means of the pulling device 16 in relation to the state shown in FIG. In order to exert the necessary tensile force on the working path A, the cylinder body 17 has been pivoted by the drive 19 about the pivot axis 18 and against the web tension in the middle target position shown in Figure 3. This setpoint position assumes the cylinder body 17 during operation also, but pivots freely according to the interaction of the web tension and the return element. During the extraction of the working web A by means of the drive 19 forced pivoting movement of the cylinder body 17, the rotational movement of the work roll R1 by means of the motor M1 and / or a brake 8 is controlled so that adjusts a favorable web tension and Auszugsgeschwindigkeit. Particularly preferably, an additional brake 8 is not required in this case. Rather, it is driven during the extraction of the working path A of the motor M1 at a defined speed or even works as a brake generator, and it is the cylinder body 17 acted upon by the drive 19 with a defined restoring force, so that the cylinder body 17 assumes the middle target position. The pull-out of the work A is indicated in Figure 3 with two solid arrows in the web.

Während der Ausziehbewegung ist die Vorratsrolle R1 aufgrund des mittels der andrückenden Klebewalze 14 bewirkten Reibschlusses aus ihrer in den Figuren 1 und 2 dargestellten Drehwinkelposition in die in Figur 3 dargestellte Drehposition gedreht worden, in der die Klebestelle 6 unter der Klebewalze 14 zu liegen kommt. Da die Klebestelle 6 zuvor bereits "scharf" gemacht worden ist, wird in der gezeigten Drehwinkelposition die Arbeitsbahn A von der Klebewalze 14 fest gegen den die Klebestelle 6 aufweisenden Bahnanfang der Vorratsbahn V gedrückt und dadurch der Bahnanfang der Vorratsbahn V an die Arbeitsbahn A geklebt. Die Bremskraft der Bremse 8 wird von der Steuerungseinrichtung 24 abgestimmt auf die Schwenkbewegung des Zylinderkörpers 17 der Zugeinrichtung 16 eingestellt. Die Abstimmung ist derart, dass die Bremskraft der Bremse 8 so eingestellt ist, dass der Zylinder 17 der Zugeinrichtung 16 eine Schwenkbewegung mit einer definierten Geschwindigkeit ausführt bis hin zu einer hinteren Position, die in Figur 4 in einer ausgezogenen Linie dargestellt ist. Anstatt einer zusätzlichen Bremse 8 kann der Motor M1 als Bremsgenerator betrieben werden. Insbesondere kann ein Motor für beide Drehrichtungen den Motor M1 bilden. Auch solch ein Motor mit umkehrbarer Drehrichtungen kann zusätzlich als Bremsgenerator ausgebildet sein.During the pull-out movement, the supply roll R1 has been rotated from its rotational angle position shown in FIGS. 1 and 2 into the rotational position shown in FIG. 3 due to the frictional engagement caused by the pressing adhesive roll 14, in which the splice 6 comes to rest under the adhesive roll 14. Since the splice 6 has already been made "sharp" before, the working web A is pressed by the adhesive roller 14 firmly against the splice 6 having web start of the supply path V and thereby glued the web start of the supply web V to the work A in the rotational angle position shown. The braking force of the brake 8 is adjusted by the control device 24 to the pivoting movement set of the cylinder body 17 of the pulling device 16. The tuning is such that the braking force of the brake 8 is set so that the cylinder 17 of the pulling device 16 performs a pivoting movement at a defined speed up to a rear position, which is shown in a solid line in Figure 4. Instead of an additional brake 8, the motor M1 can be operated as a brake generator. In particular, a motor for both directions of rotation form the motor M1. Such a motor with reversible directions of rotation may additionally be designed as a brake generator.

Figur 4 zeigt in der Sequenz den Zustand, in dem der Zylinderkörper 17 seine hintere Position einnimmt und die Arbeitsbahn A deshalb im Rahmen des Stillstands-Rollenwechsels um die maximale Auszugslänge ausgezogen worden ist. Während des gesamten Auszugvorgangs, d.h. von dem in Figur 2 bis zu dem in Figur 4 dargestellten Zustand ist die Klebewalze 14 gegen die Vorratsrolle R2 gepresst. Nach Herstellen der Verbindung, was in erster Linie in dem in Figur 3 dargestellten Zustand erfolgt, wird durch das weitere Anpressen der Klebewalze 14 ein sauberes Ablösen des Bahnanfangs der Vorratsbahn V von der Vorratsrolle R2 bewirkt. In dem in Figur 4 dargestellten Zustand ist der Bahnanfang der Vorratsbahn V bereits von der Vorratsrolle R2 abgelöst. Ferner ist nach dem Ablösen des Bahnanfangs auch bereits die Arbeitsbahn A hinter der Klebestelle 6, d.h. wie im Ausführungsbeispiel noch bevorzugter hinter der Klebewalze 14, mittels des Kappmessers 15 gekappt worden. Figur 4 zeigt die alte Arbeitsbahn A unmittelbar nach dem Kappen.Figure 4 shows in sequence the state in which the cylinder body 17 assumes its rear position and the working web A has therefore been pulled out during the standstill roll change by the maximum extension length. Throughout the pull-out process, i. from that shown in Figure 2 to the state shown in Figure 4, the adhesive roller 14 is pressed against the supply roll R2. After making the connection, which takes place primarily in the state shown in Figure 3, a clean detachment of the web start of the supply web V of the supply roll R2 is effected by the further pressing of the adhesive roller 14. In the state shown in Figure 4, the web start of the supply web V is already detached from the supply roll R2. Furthermore, after detachment of the web start already the working web A behind the splice 6, i. As in the embodiment, even more preferably behind the adhesive roller 14, by means of the Kappmessers 15 have been capped. FIG. 4 shows the old working track A immediately after the capping.

Nach dem Kappen wird die Bremse 8 gelöst, und es wird die Arbeitsbahn A durch Rückdrehung der Arbeitsrolle R1 wieder bis zum gekappten Bahnanfang der Arbeitsbahn A auf die Arbeitsrolle R1 aufgewickelt. Dieser Zustand ist in Figur 5 dargestellt. Anschließend kann die alte Arbeitsrolle R1 automatisch oder von Hand aus dem Rollenwechsler genommen werden.After capping the brake 8 is released, and it is the working web A wound by reverse rotation of the work roll R1 again to the capped web start of the work A on the work roll R1. This condition is shown in FIG. Subsequently, the old work roll R1 can be taken out of the roll changer automatically or by hand.

Nachdem die Verbindung hergestellt und der Bahnanfang der Vorratsbahn von der Vorratsrolle R2 abgelöst worden ist, wird die Verbindungseinrichtung 10 wieder von der Vorratsrolle R2 abgestellt. Anschließend wird der Zylinderkörper 17 durch den Antrieb M1 der Arbeitsrolle R1 aus seiner in Figur 4 dargestellten hinteren Position zurück in die mittlere Position (Sollposition) bewegt, die der Zylinderkörper 17 auch im späteren Betrieb der Maschine einnimmt bzw. um die er im Falle von Bahnschwankungen oszilliert. Die Arbeitsbahn A ist währenddessen weiterhin von der Halte- und Zugeinrichtung 21 fixiert. Während der Rückbewegung des Zylinderkörpers 10 in die Mittelposition wird die Vorratsrolle R2, von der im Weiteren die Arbeitsbahn abwickelt, zurückgedreht, um die Bahnspannung konstant oder zumindest im Wesentlichen konstant zu halten. Die Rückdrehbewegung ist durch den eingezeichneten Drehpfeil angedeutet. Der Rollenwechsel ist in diesem, in Figur 5 dargestellten Zustand beendet.After the connection has been made and the web start of the supply web has been detached from the supply roll R2, the connecting device 10 is again from the Supply roll R2 turned off. Subsequently, the cylinder body 17 is moved by the drive M1 of the work roll R1 from its rear position shown in Figure 4 back to the middle position (target position), which the cylinder body 17 also occupies during later operation of the machine or to which he in the case of web fluctuations oscillates. The work A is still fixed by the holding and pulling device 21 while. During the return movement of the cylinder body 10 into the middle position, the supply roll R2, from which the working web subsequently unwinds, is turned back in order to keep the web tension constant or at least substantially constant. The reverse rotation is indicated by the indicated rotary arrow. The role change is completed in this, shown in Figure 5 state.

Falls der Antrieb 19 ein Pneumatikantrieb ist, kann er auch das Rückstellelement für den elastischen Ausgleich von Bahnschwankungen bilden. Weist er jedoch keine Elastizität auf, weil er beispielsweise von einem Hydraulikantrieb oder Elektroantrieb gebildet wird, so ist solch ein Antrieb 19 für die Zwecke des Bahnspannungsausgleichs im laufenden Maschinenbetrieb ausgekuppelt.If the drive 19 is a pneumatic drive, it can also form the return element for the elastic compensation of web fluctuations. However, if it has no elasticity, because it is formed for example by a hydraulic drive or electric drive, then such a drive 19 is disengaged for the purpose of web tension compensation during machine operation.

Zur Aufnahme der Produktion mit der von der Vorratsbahn gebildeten neuen Arbeitsbahn muss lediglich noch die Fixierung zwischen dem Zylinderkörper 22 und dem Klemmelement 23 durch Abstellen des Klemmelements 23 gelöst werden.To record the production with the new work path formed by the supply track, only the fixation between the cylinder body 22 and the clamping element 23 has to be released by parking the clamping element 23.

Bezugszeichen:Reference numerals:

11
Lagerung, erster RollenarmStorage, first roller arm
22
Lagerung, zweiter RollenarmStorage, second roller arm
33
Schwenkachseswivel axis
44
Drehachseaxis of rotation
55
Drehachseaxis of rotation
66
Klebestellesplice
77
Sensorsensor
88th
Bremsebrake
99
Umlenkwalzedeflecting
1010
Verbindungseinrichtung, KlebeeinrichtungConnecting device, adhesive device
1111
Schwenkarmswivel arm
1212
Schwenkachseswivel axis
1313
SchwenkantriebRotary actuator
1414
Anpresselement, KlebewalzePressing element, adhesive roller
1515
KappmesserCutting knife
1616
Zugeinrichtungdrawbar
1717
Zylinderkörper, PendelwalzeCylinder body, pendulum roller
1818
Schwenkachseswivel axis
1919
Antriebdrive
2020
Umlenkwalzedeflecting
2121
Halteeinrichtungholder
2222
Zugelement, ZugwalzeTension element, tension roller
2323
Klemmelement, BlockierelementClamping element, blocking element
2424
Steuerungseinrichtungcontrol device
AA
Arbeitsbahnworking web
VV
Vorratsbahnsupply web
M1M1
Rollenantriebroller drive
M2M2
Rollenantriebroller drive
M3M3
SchwenkantriebRotary actuator
R1R1
Arbeitsrollework role
R2R2
Vorratsrollesupply roll
αα
DrehlagewinkelRotational position angle

Claims (13)

  1. A reel changer for a web processing machine, said reel changer being equipped for unwinding a working web (A) to be processed from a working reel (R1) and for connecting a supply web (V) from a supply reel (R2) to the working web (A), and comprising:
    a) a first bearing (1, 4) for the working reel (R1) and a second bearing (2, 5) for the supply reel (R2);
    b) a connecting means (10) for connecting the supply web (V) to the working web (A);
    c) a holding means (21), arranged downstream of the connecting means (10) on the web, for fixing the working web (A);
    characterised by:
    d) a drawing means (16) which is arranged in a web path of the working web (A) between the connecting means (10) and the holding means (21) and equipped for drawing the working web (A) from the working reel (R1) from a standstill of the working reel (R1)
  2. The reel changer according to claim 1, characterised in that a tensioning means, which serves to equalise variations in web tension while the machine is running, forms the drawing means (16).
  3. The reel changer according to any one of the preceding claims, characterised in that the drawing means (16) comprises at least one cylinder body (17) and a drive (19), by means of which the cylinder body (17) can be moved transversely with respect to the working web (A), in order to draw the working web (A) from the working reel (R1).
  4. The reel changer according to the preceding claim, characterised in that the cylinder body (17) is mounted such that it can move transversely with respect to its longitudinal axis, against an elasticity force of a restoring means, wherein the elasticity force counteracts a force which acts on the cylinder body (17) from the working web (A).
  5. The reel changer according to any one of the preceding two claims, characterised in that a dancing roller which is mounted such that it can move, preferably pivot, transversely with respect to the working web (A) forms the cylinder body (17).
  6. The reel changer according to any one of the preceding claims, characterised in that the connecting means (10) is arranged opposite the supply reel (R2) situated in a jointing position and is mounted such that it can be adjusted to the supply reel (R2).
  7. The reel changer according to any one of the preceding claims, characterised in that the holding means (21) comprises a drawing element (22) for conveying the working web (A) or is already formed by the drawing element (22) alone.
  8. The reel changer according to the preceding claim, characterised in that the holding means (21) comprises a clamping element (23) which can be pressed against the drawing element (22) for fixing the working web (A) due to the clamping between the drawing element (22) and the clamping element (23).
  9. The reel changer according to any one of the preceding claims, characterised in that a drawing means which is arranged in the web path of the working web (A), before a processing means of the machine which immediately follows the reel changer, forms the holding means (21).
  10. The reel changer according to any one of the preceding claims, characterised in that a motor (M1) for a rotary drive of the working reel (R1) is formed as a brake generator.
  11. A method for an automatic reel change in a web processing machine, wherein:
    a) a supply reel (R2) of a supply web (V) is moved up to a jointing position in relation to a working web (A) which is drawn into the machine and unwinds from a working reel (R1);
    b) the working web (A) is pressed onto and connected to the beginning of a web of the supply reel (R2);
    c) the working web (A) is fixed downstream on the web of the beginning of the web of the supply reel (R2);
    characterised in that:
    d) a drawing force is exerted on the fixed working web (A) at a point between the beginning of the web of the supply reel (R2) and the point of fixing, and the working web (A) is drawn from the working reel (R1);
    e) when the working web (A) is drawn, the supply reel (R2) is rotated by pressing on the working web (A) or by a drive on its own; and
    f) once the connection has been established, the working web (A) is separated at a point between the working reel (R1) and the beginning of the web of the supply reel (R2).
  12. The method according to the preceding claim, characterised in that the working web (A) pressed onto the supply reel (R2) is tensioned by braking the working reel (R1) or driving the working reel (R1) in a controlled manner.
  13. The method according to any one of the preceding claims, characterised in that once the working web (A) has been separated, and the fixing still exists, the supply reel (R2) is rotated back, counter to the conveying direction of the supply web (V) forming a new working web, in order to tension the new working web.
EP02405806A 2001-09-21 2002-09-17 Roll changer and method for the automatic change of rolls during stop Expired - Lifetime EP1295830B2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10146631A DE10146631B4 (en) 2001-09-21 2001-09-21 Roll changer and method for automatic roll change at standstill
DE10146631 2001-09-21

Publications (4)

Publication Number Publication Date
EP1295830A2 EP1295830A2 (en) 2003-03-26
EP1295830A3 EP1295830A3 (en) 2005-01-26
EP1295830B1 true EP1295830B1 (en) 2007-03-21
EP1295830B2 EP1295830B2 (en) 2009-06-17

Family

ID=7699843

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02405806A Expired - Lifetime EP1295830B2 (en) 2001-09-21 2002-09-17 Roll changer and method for the automatic change of rolls during stop

Country Status (5)

Country Link
US (1) US6729573B2 (en)
EP (1) EP1295830B2 (en)
AT (1) ATE357395T1 (en)
DE (2) DE10146631B4 (en)
ES (1) ES2284804T5 (en)

Cited By (2)

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Publication number Priority date Publication date Assignee Title
DE102008000242B3 (en) * 2008-02-06 2009-01-22 Koenig & Bauer Aktiengesellschaft Method e.g. for halt roll exchange in roll exchanger, involves deviating new material in connection position and moving coupling device to new material
EP2133297A2 (en) 2008-06-12 2009-12-16 Manroland AG Roller changer for a roller printing press and method for operating same

Families Citing this family (6)

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JP3539565B2 (en) * 2002-02-05 2004-07-07 株式会社東京機械製作所 Web press for web press
ITFI20040016A1 (en) * 2004-01-21 2004-04-21 Perini Fabio Spa UNWINDING DEVICE FOR TAPES OF TAPE MATERIAL AND RELATED METHOD
ITFI20060156A1 (en) * 2006-06-21 2007-12-22 Focus S R L SUPPLY DEVICE FOR A MATERIAL IN THE FORM OF A CONTINUOUS TAPE WITH ONE OR MORE OPERATING MACHINES
DE102011007457A1 (en) * 2011-04-15 2012-10-18 Robert Bosch Gmbh Method and device for connecting two film webs
DE102011084935A1 (en) 2011-10-21 2013-04-25 Koenig & Bauer Aktiengesellschaft Method for drawing at least one material web into a processing device
EP3392029B1 (en) * 2017-04-21 2022-01-05 Held Technologie GmbH Feeding device for a double belt press, double belt press system and method of operation

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US3279716A (en) * 1963-09-09 1966-10-18 William F Huck Continuous web winding rollstand
US3326486A (en) * 1965-09-02 1967-06-20 Huck William F Automatic controls for splicing rollstand
US3391877A (en) * 1966-09-28 1968-07-09 Hurletron Inc Automatic preprint paster apparatus and method for using same
JPS5931244A (en) * 1982-08-09 1984-02-20 Dainippon Printing Co Ltd Paper feeder with automatic paper connection
US4453152A (en) † 1983-01-10 1984-06-05 The Singer Company Sewing machine control
DE3440107A1 (en) * 1984-11-02 1986-05-22 Jagenberg AG, 4000 Düsseldorf Method and device for connecting a first web of material running to a processing machine to the start of a wound-up second web of material
DE3601296A1 (en) * 1986-01-17 1987-07-23 Waertsilae Strecker Gmbh DEVICE FOR AUTOMATICALLY LAYING A GOODS IN A FEEDING DEVICE
DE3723600A1 (en) * 1987-07-17 1989-01-26 Voith Gmbh J M UNWINDING DEVICE FOR PAPER OR CARDBOARD
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DE4000745A1 (en) * 1990-01-12 1991-07-18 Roland Man Druckmasch REEL CHANGE DEVICE FOR A PRINTING MACHINE
US5064488A (en) * 1990-03-27 1991-11-12 Trine Manufacturing Company, Inc. Apparatus and method for splicing film
JPH0671954B2 (en) * 1990-11-29 1994-09-14 株式会社東京機械製作所 Paper splicing device
US5253819A (en) † 1991-09-04 1993-10-19 Butler Automatic, Inc. Speed match splicing method and apparatus
US5514237A (en) * 1993-10-05 1996-05-07 The Procter & Gamble Company Heat splicing of thermoplastic film
JP2943106B1 (en) * 1998-05-18 1999-08-30 株式会社東京機械製作所 Vibration control method for traveling web, vibration control device, and paper splicing assist device
DE10060757A1 (en) † 2000-12-07 2002-06-13 Heidelberger Druckmasch Ag Automatic roll changer for web-fed rotary printer splices end of new roll to end of old roll passing over dancer roll, adjuster for dancer roll keeping old web under constant tension before splicing

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008000242B3 (en) * 2008-02-06 2009-01-22 Koenig & Bauer Aktiengesellschaft Method e.g. for halt roll exchange in roll exchanger, involves deviating new material in connection position and moving coupling device to new material
EP2133297A2 (en) 2008-06-12 2009-12-16 Manroland AG Roller changer for a roller printing press and method for operating same
DE102008028165A1 (en) 2008-06-12 2009-12-17 Manroland Ag Reel changer for a web-fed printing press and method of operating the same

Also Published As

Publication number Publication date
EP1295830A3 (en) 2005-01-26
US6729573B2 (en) 2004-05-04
DE50209753D1 (en) 2007-05-03
ES2284804T5 (en) 2009-10-15
EP1295830A2 (en) 2003-03-26
EP1295830B2 (en) 2009-06-17
ES2284804T3 (en) 2007-11-16
DE10146631A1 (en) 2003-04-10
ATE357395T1 (en) 2007-04-15
DE10146631B4 (en) 2004-03-04
US20030057315A1 (en) 2003-03-27

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