EP1897830B1 - Device for connecting a first web with a second web - Google Patents

Device for connecting a first web with a second web Download PDF

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Publication number
EP1897830B1
EP1897830B1 EP07114653A EP07114653A EP1897830B1 EP 1897830 B1 EP1897830 B1 EP 1897830B1 EP 07114653 A EP07114653 A EP 07114653A EP 07114653 A EP07114653 A EP 07114653A EP 1897830 B1 EP1897830 B1 EP 1897830B1
Authority
EP
European Patent Office
Prior art keywords
material web
roll
web
speed
drive
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.)
Active
Application number
EP07114653A
Other languages
German (de)
French (fr)
Other versions
EP1897830A2 (en
EP1897830A3 (en
Inventor
Walter Ritter
Klaus Röder
Klaus Vogt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Koenig and Bauer AG
Original Assignee
Koenig and Bauer AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Koenig and Bauer AG filed Critical Koenig and Bauer AG
Publication of EP1897830A2 publication Critical patent/EP1897830A2/en
Publication of EP1897830A3 publication Critical patent/EP1897830A3/en
Application granted granted Critical
Publication of EP1897830B1 publication Critical patent/EP1897830B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B65H19/1805—Flying splicing, i.e. the expiring web moving during splicing contact
    • B65H19/181—Flying splicing, i.e. the expiring web moving during splicing contact taking place on the replacement roll
    • B65H19/1815—Flying splicing, i.e. the expiring web moving during splicing contact taking place on the replacement roll the replacement web being stationary prior to splicing contact
    • 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
    • B65H2301/40—Type of handling process
    • B65H2301/46—Splicing
    • B65H2301/461—Processing webs in splicing process
    • B65H2301/4615—Processing webs in splicing process after splicing
    • B65H2301/46152—Processing webs in splicing process after splicing cutting off tail after (flying) splicing
    • 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
    • B65H2301/40—Type of handling process
    • B65H2301/46—Splicing
    • B65H2301/464—Splicing effecting splice
    • B65H2301/4641—Splicing effecting splice by pivoting element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2408/00—Specific machines
    • B65H2408/20—Specific machines for handling web(s)
    • B65H2408/24—Specific machines for handling web(s) unwinding machines
    • B65H2408/241—Turret
    • B65H2408/2411—Turret with protruding guiding roll or surface between unwound rolls on mobile assembly
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2513/00—Dynamic entities; Timing aspects
    • B65H2513/10—Speed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2557/00—Means for control not provided for in groups B65H2551/00 - B65H2555/00
    • B65H2557/20—Calculating means; Controlling methods
    • B65H2557/25—Modular control, i.e. systems which work independently or partially dependently on other systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2801/00—Application field
    • B65H2801/03—Image reproduction devices
    • B65H2801/21—Industrial-size printers, e.g. rotary printing press

Definitions

  • the invention relates to a device for connecting a first material web to a second material web according to the preamble of claim 1.
  • a device for connecting a first material web to a second material web wherein at least the first material web is wound into a roll having a roller for unwinding its material web rotating drive, wherein at least the progressively from their role and guided to the second material web first Material web at the time of connecting the two webs in motion, and with the first web at least at the time of connecting the two webs to the second web
  • An affordelement wherein at least the role of the first web is driven on its axis in its speed by the drive, wherein a control unit on this drive for the operating condition of the pressure applied to the first material web pressure element sets a different speed than for the operating state of the parked from the first material web pressure element, wherein both webs each to a Rol le are wound, both rollers each have their own drive, these drives are independently controlled by the control unit.
  • a reel changer for a printing machine with a control device wherein the control device, inter alia, a drive and braking device for a roll in processing and a Bahnandsch- and separating device for pressing the web of the roll in unwinding at the web start of the subsequently unwound spare roll during the bonding process controls.
  • a method and apparatus for line orientation of a preprinted web in a second printing wherein a new preprinted web can be attached to the outgoing web while maintaining a maximum production speed while the printing press is running, wherein a tension of the web is automatically applied during a gluing operation the outgoing web is pressed by a brush against the new roll is reduced to a lower limit, the web tension z. B. is varied by a brake.
  • a method for carrying out a flying roll change wherein a first material web of a material roll to be changed is connected to a second material web of a new material roll, wherein the material roll to be changed runs at a first web speed, at the latest when a minimum diameter of the remaining roll reaches the first material web is connected to the second material web, wherein prior to joining the first material web to the second material web of this minimal diameter of the residual role is determined depending on properties of a recording of a roll changer for receiving rolls of material, wherein before connecting the first material web with the second material web, the first Web speed is reduced to a second web speed and that the first material web is connected at this reduced web speed with the second material web.
  • the invention is based on the object, a device for connecting a first To provide material web with a second material web, wherein an existing in the first material web tension is maintained even in the process of connecting the two webs.
  • the advantages that can be achieved with the invention are, in particular, that the web tension existing in the first material web is maintained during the process of joining the two material webs, that the first material web can be separated from its role by a defined cut after its connection to the second material web and that a residual lug formed on the first web of material by its separation from its roll can be formed to a predetermined length.
  • the Fig. 1 shows as an example of a device for connecting a first material web 01 with a second material web 02 in a sectional view of an automatic roll changer for a web-fed printing press, wherein both webs 01; 02 preferably each as a paper web 01; 02 are formed. At least the first material web 01, but preferably both material webs 01; 02 are each one Roll 03; 04 wound, both rollers 03; 04 arranged diametrically opposite support arms 06; 07 of the roll changer are arranged, wherein the support arms 06; 07 are arranged symmetrically to each other on a in the roll changer, preferably about a central support frame axis 19 pivotally mounted support frame 18.
  • At least the roller 03 with the first material web 01, but preferably both rollers 03; 04 are each at Konen 08; Stored 09, wherein the respective roller 03; 04 on their respective axis 11; 12 of a on one of the support arms 06; 07 arranged, cooperating pair of rotatable cones 08; 09 is raised.
  • the respective axes 11; 12 of the two rollers 03 taken up by the paster; 04 are thus spaced from each other.
  • the material webs 01; 02 are z. B.
  • This positive locking and / or frictional engagement transmits at least one of the rotatable cones 08; 09 a torque on the respective roller 03; 04, as soon as at least one of the same on the roll 03; 04 pairwise cooperating cones 08; 09 is driven by rotation.
  • At least the roller 03 with the first material web 01, but preferably both rollers 03; 04 each have one on their respective at least one cone 08; 09 acting drive 13; 14, wherein the respective drive 13; 14 the respective on one of the support arms 06; 07 arranged roll 03; 04 offset in a rotational movement, wherein the respective roller 03; 04 with their respective rotational movement their respective material web 01; 02 completes.
  • At least the roller 03 with the first material web 01, but preferably both rollers 03; 04 thus each have a center-driven drive 13; 14, ie at least the roller 03 of the first material web 01 is driven directly on its axis 11 in its rotational speed by its drive 13.
  • the drives 13; 14 can than on the axis 11; 12 of the respective roller 03; 04 acting direct drives be formed.
  • the drives 13; 14 set at their respective speed on the circumference of the respective roller 03 driven by them; 04 depending on their respective diameter, a peripheral speed v03; v04 on. If both rollers 03; 04 a suitable drive 13; 14, so these drives are 13; 14 independently controllable.
  • the respective drive 13; 14 of the respective roller 03; 04 is z. B. each as one of a control unit 16 ( Fig. 2 ) adjustable in its speed, preferably as a variable in its speed drive 13; 14, in particular as an electrically adjustable in its speed and / or adjustable motor, both drives 13; 14 of the same control unit 16 can be controlled.
  • the control unit 16 sets the speed of the respective drive 13 in the continuous printing of the web press; 14 of a roll 03; 04 with regard to a preferably within fixed limits as constant as possible web speed v, which the of the respective roller 03; 04 unwound web 01; 02 on their departure from the roll changer on their transport z. B. should have to a retraction of the web press, wherein the feed train is arranged downstream of the reel changer.
  • the control unit 16 belongs to the reel changer or is at least assigned to it.
  • the rotational speed of the respective drive 13; 14 and the rotational speed of the respective roller 03; 04 are in a fixed relationship to each other.
  • a trained as a center drive drive 13; 14 of the respective roller 03; 04 corresponds to the rotational speed of the respective drive 13; 14 the speed of the respective roller 03; 04.
  • z. B. at an offset between a shaft of the respective drive 13; 14 and the axle 11; 12 of the respective roller 03; 04 a gear ratio of the respective speeds must be considered ( Fig. 1 ).
  • a reel changer forms z. B. the roller 03 with the first web 01 a running, largely unwound roll 03, whereas the roller 04 with the second web 02 is held by the roll changer as a supply roll 04, wherein the second web 02 is still completely wound on the supply roll 04.
  • the first web of material 01 d. H. the web 01 of the rest roller 03, connected to the second web 02 by the first web 01 z. B. by deflection on one of the two preferably arranged on the support frame 18 of the roll changer deflection spindles 17, which z. B.
  • the first material web 01 is therefore guided by the remaining roll 03 via a deflection spindle 17 first to the lateral surface of the supply roll 04 and from there to the retraction of the web press, wherein the first web 01 is moved along this transport path with the web speed v, as long as on this transport z. B. no frictional forces on the first material web 01 attack.
  • a pressing element 21 is also provided, with which the first material web 01 for a z. B. on the control unit 16 adjustable duration of the lateral surface of the supply roll 04 is pressed.
  • the pressing member 21 is preferably by a triggered by the control unit 16 actuation of an actuating element 22 radially against the lateral surface of the supply roll 04 and adjustable from this lateral surface after expiration of the z. B. on the control unit 16 adjustable duration also off again.
  • the pressing member 21 is z. B. as a first material web 01 to the second web 02 pressing brush 21 is formed.
  • the employment of the pressure element 21 to the first material web 01 is preferably carried out for a relatively short limited duration and at least at the time of joining the first web 01 with the second web 02.
  • the employment of the pressing member 21 to the first web 01 thus forms a first operating state of this pressure element 21, whereas the shutdown of the pressure element 21 from the first material web 01 forms a second operating state of this pressure element 21.
  • the two webs 01; 02 are preferably connected to each other by means of a bond.
  • the drive 14 accelerates the roller 04 with the second material web 02 z. B. from standstill to the current web speed v of the first material web 01.
  • both rollers 03; 04 the same peripheral speed v03; v04 on, d. H.
  • the circumferential speed v03 of the roller 03 with the first material web 01 and the peripheral speed v04 of the roller 04 with the second material web 02 are equal in value.
  • the peripheral speed v03 of the roller 03 with the first material web 01 relative to the peripheral speed v04 of the roller 04 with the second material web 02 is reduced and remains at least for the duration of the pressing of the first material web 01 to the second material web 02 decreases, which will be explained later in more detail.
  • the area of departure of the respective material web 01 is preferably 01; 02 from the roll changer, ie in the transport direction to or behind a setting position of the pressing element 21 to the first material web 01, an arrangement of a plurality of rollers 26; 27; 28 provided, these rollers 26; 27; 28 in the frame 24 of the roll changer parallel to the axes 11; 12 of the rollers 03; 04 are arranged, wherein at least two of these rollers 26; 27 are arranged stationary and one in the transport path of the respective web 01; 02 between these two stationary rollers 26; 27 arranged third roller 28 is arranged variable in place.
  • the location variable third roller 28 may, for. B. as a pivotable about a pivot 29 to a lever pivoting roller 28 or as a mounted in a linear guide dancer roller 28, said third roller 28 their respective position in dependence on a location in the respective web 01; 02 prevailing web tension occupies.
  • Fig. 1 are three different operating positions A; B; C exemplified for the arranged on a pivotable lever 29 pendulum roller 28.
  • a second operating position B of the pendulum roller 28 is also provided by a respective material web 01; 02 at her acting elevated web tension and a third operating position C of the pendulum roller 28 with a through the respective web 01; 02 shown acting on her reduced web tension.
  • Increased web tension causes the location-variable roller 28 to be fed to the stationary rollers 26; 27, whereas a reduced web tension is a removal of the location variable roller 28 from the stationary rollers 26; 27 means.
  • the respective operating position A, B, C of the variable position roller 28 is connected to a measuring device 31, z. B. with a odometer 31, detectable, the measuring device 31 their respective z. B.
  • electrical analog or digital measurement signal 33 preferably leads to the control unit 16 for local evaluation.
  • the measuring signal 33 the measuring device 31 is in a direct relationship with the in the respective web 01; 02 currently prevailing web tension.
  • a transmitter 32 Fig. 2
  • z. B. a rotary encoder 32 which with one of the rollers 26; 27; Cooperate 28 or can be operated independently, with which the current web speed v of the respective web 01; 02 is detectable, with a turn z.
  • electrical analog or digital measurement signal 34 of the encoder 32 is also preferably directed to the control unit 16 for local evaluation.
  • the web tension increases, at least on the transport path of the first material web 01, from the employed pressing element 21 to the location-variable roller 28, which results in a changed spatial position of the location-variable roller 28.
  • the location-variable roller 28 leaves its first operating position A and assumes its second operating position B, whereby at the associated measuring device 31 a correlated with the changed position of the location-variable roller 28 measuring signal 33 is generated and sent to the control unit 16.
  • the frictional force causes the web tension in a portion of the transport path of the first material web 01 of the remaining roll 03, but at least of the Umlenkspindel 17 collapses to the contracted Andschreibelement 21, whereby this material web 01 is loose at least in this section of their transport path, which in of the Fig. 1 in the section between the deflection spindle 17 and the employed pressure element 21 is represented by a curved course of the transport path of the first material web 01.
  • the device for connecting the first material web 01 to the second material web 02 is designed such that the control unit 16 on the drive 13 of the roller 03 with the first material web 01 for the operating state of the pressed against the first web 01 pressing element 21 a
  • the control unit 16 sets the speed of the roller 03 driving the first material web 01 drive 13 and thus the peripheral speed v03 of the roller 03 with the first material web 01st at least for the duration of pressing the first material web 01 to the second material web 02 down, which has already been mentioned above.
  • control unit 16 reduces the rotational speed of the drive 03 driving the roller 03 with the first material web 01 by an adjustable amount on the control unit 16 or that the control unit 16, the rotational speed of the roller 03 with the first material web 01 driving drive 13 proportional to that of the pressure element 21 reduces frictional force exerted on the first material web 01.
  • the control unit 16 reduces the speed of the roller 03 with the first material web 01 driving 13 until the standstill of this role 03.
  • the web tension is preferably kept constant within the said section of the transport path of the first material web 01 within permissible tolerance values by the rotational speed of the relevant drive 13 in correlation to the
  • the frictional force exerted by the pressure element 21 on the first web of material 01 is set once by the control unit 16 to a value that is lower than that of the previous setting or is also tracked by a multi-changed setting.
  • the peripheral speed v03 of the roller 03 is reduced with the first material web 01.
  • the web speed v of the first material web 01 on its transport path from its roller 03 to the setting position of the pressing element 21 decreases relative to its value before the date of employment of the pressing element 21 to the first material web 01.
  • the current peripheral speed v03 of the roller 03 with the first material web 01 is also reduced in relation to the current peripheral speed v04 of the roller 04 with the second material web 02, because the speed set by the control unit 16 with the drive 14 of the roller 04 with the second material web 02 remains from the Change in the operating state of the pressure element 21 untouched.
  • control unit 16 can thus trigger the adjustment of the previous rotational speed of the drive 13 by the directed to the first web 01 movement of the pressing member 21 by selecting a different target within a very short time, ie almost suddenly switch to another value.
  • the control unit 16 may, for. B.
  • control unit 16 may also use a control signal with respect to a provision of the pressure element 21 in its parked from the first material web 01 operating state to again z. B. the earlier speed of the drive 13 or another now suitable speed at this drive 13 set.
  • Another advantage is that in the section of their transport from the rest of the roll 03, but at least from the Umlenkspindel 17 to the employed Andschreibelement 21 despite the force exerted by the pressing element 21 frictionally held first web of material 01, the blasting knife 23 for performing a defined can dive uniform cut and the freely guided first material web 01 not only pushes away, so that the remaining lug of the first material web 01 by taking place at a predetermined point section has a previously set length.
  • Fig. 2 shows a block diagram of a controller of the in the Fig. 1 exemplified reel changer.
  • the control unit 16 are both the correlated with the changed position of a location variable roller 28 and thus with the web tension measurement signal 33 z.
  • different functional units 36; 37; 38; 39 of the control unit 16 is optionally, taking into account previously stored in the control unit 16 values for certain parameters and / or setpoints from one or in combination of both of these each actual values actual values forming measuring signals 33; 34 z. B. the current web speed v of the respective web 01; 02 and / or the current diameter of the remaining roll 03, from which the first material web 01 is being unwound, and / or the current speed of the drive 13 of this mounted on a rotatable cone 08 residual roll 03 determined, preferably calculated.
  • the control unit 16 then has z. B. via an actual value with respect to the current web speed v of the respective web 01; 02 at least from the lying in the transport direction to or behind a Anstellposition of the pressure element 21 to the first web of material 01 area.
  • the correlating with the web tension measuring signal 33 is a z. B. belonging to the control unit 16 controller 41, wherein the controller 41 z. B. in comparison with the from the current web speed v of the respective web 01; 02 calculated speed of the drive 13 and possibly taking into account at least one previously stored in the control unit 16 value for a specific target specification, the speed of the drive 13 if necessary re-sets if necessary and as a result of an oriented at the intended operating conditions target specification controls tracking, this Operating situation, each causing a different target specifications oriented control, z. B. is characterized by the employees to the first web 01 or parked from it pressure element 21.
  • control unit 16 is designed such that it sets in particular depending on the operating state of the pressing member 21 on the drive 13 of the remaining role 03 different speeds, which z. B. based on predetermined values, and / or optionally by means of a regulator 41, the respectively set speed with respect to a preferably within predetermined limits as constant as possible web tension and / or in particular with respect to the area of the outlet of the webs 01; 02 to a constant web speed v within predetermined tolerance values.
  • this control is superimposed on the previously made by the control unit 16 setting the speed of the drive 13.
  • the control unit 16 thus sets first a level for the dependent of the operating condition of the pressing element 21 rotational speed of the drive 13 of the remaining role 03, for compliance within defined tolerance values, the downstream control in the course of unwinding the first material web 01 provides.
  • the drive 13 of the remaining role 03 controlling unit 16 is thus able to select between different speed settings and / or control strategies and switch as needed depending on the operating state of the pressure element 21, wherein the switching by a z. B. is triggered with the control element 22 of the pressure element 21 in connection standing control signal.
  • the various control strategies can also be differentiated according to the calculated, current diameter of the remaining roll 03, wherein at a diameter of the remaining roll 03 of z. B. less than 500 mm only half of the required to maintain the web tension, correlated with a first specific speed torque on the drive 13 of the remaining roller 03 is set, whereas at a diameter of the remaining role 03 of z. B. at least 500 mm needed to maintain the web tension, with a second specific speed correlating torque is set with its full value on the drive 13 of the remaining role 03.

Landscapes

  • Replacement Of Web Rolls (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Handcart (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)

Abstract

Device for connecting a first material strip (01) to a second material strip (02) comprises a roller (03) for the first material strip driven on its axle (11) by a drive unit (13) and a control unit arranged on the drive unit for operating a pressure element (21) arranged on the first material strip to adjust the revolution. Preferred Features: The control unit reduces the revolution of the drive unit for the duration of the pressing of the first material strip on the second material strip. The pressing element is formed as a brush which can be adjusted on the first material strip.

Description

Die Erfindung betrifft eine Vorrichtung zum Verbinden einer ersten Materialbahn mit einer zweiten Materialbahn gemäß dem Oberbegriff des Anspruches 1.The invention relates to a device for connecting a first material web to a second material web according to the preamble of claim 1.

Durch die DE 100 60 757 A1 ist eine Vorrichtung zum Verbinden einer ersten Materialbahn mit einer zweiten Materialbahn bekannt, wobei zumindest die erste Materialbahn zu einer Rolle gewickelt ist, mit einem diese Rolle zum Abwickeln ihrer Materialbahn drehenden Antrieb, wobei zumindest die von ihrer Rolle fortschreitend abgewickelte und zur zweiten Materialbahn geführte erste Materialbahn im Zeitpunkt des Verbindens beider Materialbahnen in Bewegung ist, und mit einem die erste Materialbahn zumindest im Zeitpunkt des Verbindens beider Materialbahnen an die zweite Materialbahn andrückenden Andrückelement, wobei zumindest die Rolle der ersten Materialbahn an ihrer Achse in ihrer Drehzahl vom Antrieb angetrieben ist, wobei eine Steuereinheit an diesem Antrieb für den Betriebszustand des an die erste Materialbahn angestellten Andrückelementes eine andere Drehzahl einstellt als für den Betriebszustand des von der ersten Materialbahn abgestellten Andrückelementes, wobei beide Materialbahnen jeweils zu einer Rolle gewickelt sind, wobei beide Rollen jeweils einen eigenen Antrieb aufweisen, wobei diese Antriebe von der Steuereinheit unabhängig voneinander steuerbar sind.By the DE 100 60 757 A1 a device for connecting a first material web to a second material web is known, wherein at least the first material web is wound into a roll having a roller for unwinding its material web rotating drive, wherein at least the progressively from their role and guided to the second material web first Material web at the time of connecting the two webs in motion, and with the first web at least at the time of connecting the two webs to the second web Andrückenden Andrückelement, wherein at least the role of the first web is driven on its axis in its speed by the drive, wherein a control unit on this drive for the operating condition of the pressure applied to the first material web pressure element sets a different speed than for the operating state of the parked from the first material web pressure element, wherein both webs each to a Rol le are wound, both rollers each have their own drive, these drives are independently controlled by the control unit.

Durch die DE 199 19 759 A1 ist eine Vorrichtung zum Verbinden von Materialbahnen in einem Rollenwechsler mit einer Vorratsrolle und einer abgewickelten, erschöpften Bahnvorratsrolle bekannt, wobei die beiden Materialbahnen durch eine Klebeverbindung miteinander verbunden werden, wobei die Klebeverbindung von jeweils eine Andrückrolle aufweisenden Klebeköpfen ausgeführt wird.By the DE 199 19 759 A1 a device for connecting webs of material in a roll changer with a supply roll and a developed, exhausted web supply roll is known, wherein the two material webs are joined together by an adhesive bond, wherein the adhesive bond is carried out by a respective pressure roller having adhesive heads.

Auch durch die DE 42 18 825 A1 ist eine Vorrichtung zum Verbinden zweier Papierbahnen bekannt.Also by the DE 42 18 825 A1 a device for connecting two paper webs is known.

Durch die DE 40 00 746 A1 ist ein Rollenwechsler für eine Druckmaschine mit einer Steuereinrichtung bekannt, wobei die Steuereinrichtung u. a. eine Antriebs- und Bremsvorrichtung für eine in Abwicklung befindliche Rolle und eine Bahnandrück- und Trennvorrichtung zum Andrücken der Bahn der in Abwicklung befindlichen Rolle an den Bahnanfang der anschließend abzuwickelnden Ersatzrolle beim Klebevorgang steuert.By the DE 40 00 746 A1 a reel changer for a printing machine with a control device is known, wherein the control device, inter alia, a drive and braking device for a roll in processing and a Bahnandrück- and separating device for pressing the web of the roll in unwinding at the web start of the subsequently unwound spare roll during the bonding process controls.

Durch die DE 26 19 236 A1 ist ein Verfahren zur Steuerung eines fliegenden Anschließens einer Bahn von einer zweiten Rolle an eine von einer ersten Rolle ablaufenden Bahn bekannt, wobei die erste Rolle durch eine Zugkraft an der ablaufenden Bahn rotativ angetrieben wird, wobei ein von einer Regeleinrichtung eingestellter Gurtantrieb die neue, zweite Rolle auf eine Drehzahl beschleunigt, bei der ihre Umfangsgeschwindigkeit der Bahngeschwindigkeit der ablaufenden Bahn entspricht, wobei eine von einer weiteren Regeleinrichtung geregelte Restrollenbremse die Zugregelung an der ablaufenden Bahn übernimmt, wobei die ablaufende Bahn der ersten Rolle durch eine Betätigung einer Bürstenwalze gegen die neue, zweite Rolle angedrückt wird, wobei die ablaufende Bahn danach durch Betätigung einer Trennvorrichtung von der ersten Rolle getrennt wird, wobei die erste Rolle anschließend durch die Restrollenbremse gebremst wird.By the DE 26 19 236 A1 A method is known for controlling a flying connection of a web from a second roll to a web running from a first roll, wherein the first roll is rotationally driven by a tensile force on the trajectory, wherein a belt drive set by a regulator drives the new, second Roll accelerated to a speed at which its peripheral speed corresponds to the web speed of the trajectory, wherein a controlled by a further control device Restrollenbremse the Zugregelung takes on the trajectory, wherein the trailing path of the first roller is pressed by an operation of a brush roller against the new second roller, the trailing path is then separated by actuation of a separating device of the first roller, the first roller then through the rest roller brake is braked.

Durch die DE 19 66 795 A1 sind ein Verfahren und eine Vorrichtung zur Zeilenausrichtung einer vorbedruckten Bahn bei einem zweiten Bedrucken bekannt, wobei eine neue vorbedruckte Bahn bei laufender Druckmaschine unter Aufrechterhaltung einer maximalen Produktionsgeschwindigkeit an die auslaufende Bahn angefügt werden kann, wobei eine Zugspannung der Bahn automatisch während eines Anklebevorganges, bei welchem die auslaufende Bahn durch eine Bürste gegen die neue Rolle gedrückt wird, auf einen unteren Grenzwert verringert wird, wobei die Bahnspannung z. B. durch eine Bremse variiert wird.By the DE 19 66 795 A1 For example, a method and apparatus for line orientation of a preprinted web in a second printing is known wherein a new preprinted web can be attached to the outgoing web while maintaining a maximum production speed while the printing press is running, wherein a tension of the web is automatically applied during a gluing operation the outgoing web is pressed by a brush against the new roll is reduced to a lower limit, the web tension z. B. is varied by a brake.

Durch die WO 2006/029911 A1 ist ein Verfahren zur Durchführung eines fliegenden Rollenwechsels bekannt, wobei eine erste Materialbahn einer zu wechselnden Materialrolle mit einer zweiten Materialbahn einer neuen Materialrolle verbunden wird, wobei die zu wechselnde Materialrolle mit einer ersten Bahngeschwindigkeit läuft, wobei spätestens bei Erreichen eines Minimaldurchmessers der Restrolle die erste Materialbahn mit der zweiten Materialbahn verbunden wird, wobei vor dem Verbinden der ersten Materialbahn mit der zweiten Materialbahn dieser Minimaldurchmesser der Restrolle in Abhängigkeit von Eigenschaften einer Aufnahme eines Rollenwechslers zur Aufnahme von Materialrollen festgelegt wird, wobei vor dem Verbinden der ersten Materialbahn mit der zweiten Materialbahn die erste Bahngeschwindigkeit auf eine zweite Bahngeschwindigkeit reduziert wird und dass die erste Materialbahn mit dieser reduzierten Bahngeschwindigkeit mit der zweiten Materialbahn verbunden wird.By the WO 2006/029911 A1 a method for carrying out a flying roll change is known, wherein a first material web of a material roll to be changed is connected to a second material web of a new material roll, wherein the material roll to be changed runs at a first web speed, at the latest when a minimum diameter of the remaining roll reaches the first material web is connected to the second material web, wherein prior to joining the first material web to the second material web of this minimal diameter of the residual role is determined depending on properties of a recording of a roll changer for receiving rolls of material, wherein before connecting the first material web with the second material web, the first Web speed is reduced to a second web speed and that the first material web is connected at this reduced web speed with the second material web.

Der Erfindung liegt die Aufgabe zugrunde, eine Vorrichtung zum Verbinden einer ersten Materialbahn mit einer zweiten Materialbahn zu schaffen, wobei eine in der ersten Materialbahn bestehende Bahnspannung auch beim Vorgang des Verbindens der beiden Materialbahnen erhalten bleibt.The invention is based on the object, a device for connecting a first To provide material web with a second material web, wherein an existing in the first material web tension is maintained even in the process of connecting the two webs.

Die Aufgabe wird erfindungsgemäß durch die Merkmale des Anspruches 1 gelöst.The object is achieved by the features of claim 1.

Die mit der Erfindung erzielbaren Vorteile bestehen insbesondere darin, dass die in der ersten Materialbahn bestehende Bahnspannung auch beim Vorgang des Verbindens der beiden Materialbahnen erhalten bleibt, dass die erste Materialbahn nach ihrer Verbindung mit der zweiten Materialbahn durch einen definierten Schnitt von ihrer Rolle getrennt werden kann und dass eine an der ersten Materialbahn durch ihre Trennung von ihrer Rolle ausgebildete Restfahne mit einer zuvor festgelegten Länge ausgebildet werden kann.The advantages that can be achieved with the invention are, in particular, that the web tension existing in the first material web is maintained during the process of joining the two material webs, that the first material web can be separated from its role by a defined cut after its connection to the second material web and that a residual lug formed on the first web of material by its separation from its roll can be formed to a predetermined length.

Ein Ausführungsbeispiele der Erfindung ist in den Zeichnungen dargestellt und werden im Folgenden näher beschrieben.An embodiment of the invention is illustrated in the drawings and will be described in more detail below.

Es zeigen:

Fig. 1
einen Rollenwechsler in einer schematischen Schnittdarstellung;
Fig. 2
ein Blockschaltbild einer Steuerung des in der Fig. 1 dargestellten Rollenwechslers.
Show it:
Fig. 1
a reel changer in a schematic sectional view;
Fig. 2
a block diagram of a control of the in the Fig. 1 illustrated reel changer.

Die Fig. 1 zeigt als Beispiel für eine Vorrichtung zum Verbinden einer ersten Materialbahn 01 mit einer zweiten Materialbahn 02 in einer Schnittdarstellung einen automatischen Rollenwechsler für eine Rollendruckmaschine, wobei beide Materialbahnen 01; 02 vorzugsweise jeweils als eine Papierbahn 01; 02 ausgebildet sind. Zumindest die erste Materialbahn 01, vorzugsweise jedoch beide Materialbahnen 01; 02 sind jeweils zu einer Rolle 03; 04 gewickelt, wobei beide Rollen 03; 04 an diametral gegenüberliegend angeordneten Tragarmen 06; 07 des Rollenwechslers angeordnet sind, wobei die Tragarme 06; 07 symmetrisch zueinander an einem in dem Rollenwechsler vorzugsweise um eine zentrale Tragrahmenachse 19 schwenkbar gelagerten Tragrahmen 18 angeordnet sind. Zumindest die Rolle 03 mit der ersten Materialbahn 01, vorzugsweise jedoch beide Rollen 03; 04 sind jeweils an Konen 08; 09 gelagert, wobei die jeweilige Rolle 03; 04 an ihrer jeweiligen Achse 11; 12 von einem an einem der Tragarme 06; 07 angeordneten, zusammenwirkenden Paar von drehbaren Konen 08; 09 aufgeachst ist. Die jeweiligen Achsen 11; 12 der beiden von dem Rollenwechsler aufgenommenen Rollen 03; 04 sind somit voneinander beabstandet. Die Materialbahnen 01; 02 sind z. B. jeweils auf einer im Zentrum der jeweiligen Rolle 03; 04 angeordneten Hülse aufgewickelt, wobei die Konen 08; 09 der Tragarme 06; 07 des Rollenwechslers vorzugsweise zu beiden Stirnseiten der jeweiligen Hülse zumindest teilweise in selbige greifen und einen Formschluss und/oder Reibschluss zu der betreffenden Hülse und damit der jeweiligen Rolle 03; 04 herstellen. Über diesen Formschluss und/oder Reibschluss überträgt zumindest einer der drehbaren Konen 08; 09 ein Drehmoment auf die jeweilige Rolle 03; 04, sobald zumindest einer der an derselben Rolle 03; 04 paarweise zusammenwirkenden Konen 08; 09 rotativ angetrieben wird.The Fig. 1 shows as an example of a device for connecting a first material web 01 with a second material web 02 in a sectional view of an automatic roll changer for a web-fed printing press, wherein both webs 01; 02 preferably each as a paper web 01; 02 are formed. At least the first material web 01, but preferably both material webs 01; 02 are each one Roll 03; 04 wound, both rollers 03; 04 arranged diametrically opposite support arms 06; 07 of the roll changer are arranged, wherein the support arms 06; 07 are arranged symmetrically to each other on a in the roll changer, preferably about a central support frame axis 19 pivotally mounted support frame 18. At least the roller 03 with the first material web 01, but preferably both rollers 03; 04 are each at Konen 08; Stored 09, wherein the respective roller 03; 04 on their respective axis 11; 12 of a on one of the support arms 06; 07 arranged, cooperating pair of rotatable cones 08; 09 is raised. The respective axes 11; 12 of the two rollers 03 taken up by the paster; 04 are thus spaced from each other. The material webs 01; 02 are z. B. each on one in the center of the respective roller 03; 04 arranged sleeve wound up, wherein the cones 08; 09 of the support arms 06; 07 of the roll changer preferably engage at least partially in selbige to both end faces of the respective sleeve and a positive connection and / or frictional engagement with the relevant sleeve and thus the respective roller 03; 04 produce. About this positive locking and / or frictional engagement transmits at least one of the rotatable cones 08; 09 a torque on the respective roller 03; 04, as soon as at least one of the same on the roll 03; 04 pairwise cooperating cones 08; 09 is driven by rotation.

Zumindest die Rolle 03 mit der ersten Materialbahn 01, vorzugsweise jedoch beide Rollen 03; 04 weisen jeweils einen auf ihren jeweiligen mindestens einen Konus 08; 09 wirkenden Antrieb 13; 14 auf, wobei der jeweilige Antrieb 13; 14 die jeweilige an einem der Tragarme 06; 07 angeordnete Rolle 03; 04 in eine Rotationsbewegung versetzt, wobei die jeweilige Rolle 03; 04 mit ihrer jeweiligen Rotationsbewegung ihre jeweilige Materialbahn 01; 02 abwickelt. Zumindest die Rolle 03 mit der ersten Materialbahn 01, vorzugsweise jedoch beide Rollen 03; 04 weisen damit jeweils einen zentrumsgetriebenen Antrieb 13; 14 auf, d. h. zumindest die Rolle 03 der ersten Materialbahn 01 ist an ihrer Achse 11 in ihrer Drehzahl von ihrem Antrieb 13 direkt angetrieben. Die Antriebe 13; 14 können als auf die Achse 11; 12 der jeweiligen Rolle 03; 04 wirkende Direktantriebe ausgebildet sein. Zwischen der rotierenden Welle des jeweiligen Antriebs 13; 14 und der Achse 11; 12 der jeweiligen Rolle 03; 04 kann auch ein Getriebe vorgesehen sein. Die Antriebe 13; 14 stellen mit ihrer jeweiligen Drehzahl am Umfang der jeweiligen von ihnen angetriebenen Rolle 03; 04 in Abhängigkeit von deren jeweiligem Durchmesser eine Umfangsgeschwindigkeit v03; v04 ein. Wenn beide Rollen 03; 04 einen eignen Antrieb 13; 14 weisen, so sind diese Antriebe 13; 14 unabhängig voneinander steuerbar.At least the roller 03 with the first material web 01, but preferably both rollers 03; 04 each have one on their respective at least one cone 08; 09 acting drive 13; 14, wherein the respective drive 13; 14 the respective on one of the support arms 06; 07 arranged roll 03; 04 offset in a rotational movement, wherein the respective roller 03; 04 with their respective rotational movement their respective material web 01; 02 completes. At least the roller 03 with the first material web 01, but preferably both rollers 03; 04 thus each have a center-driven drive 13; 14, ie at least the roller 03 of the first material web 01 is driven directly on its axis 11 in its rotational speed by its drive 13. The drives 13; 14 can than on the axis 11; 12 of the respective roller 03; 04 acting direct drives be formed. Between the rotating shaft of the respective drive 13; 14 and the axle 11; 12 of the respective roller 03; 04 may also be provided a gear. The drives 13; 14 set at their respective speed on the circumference of the respective roller 03 driven by them; 04 depending on their respective diameter, a peripheral speed v03; v04 on. If both rollers 03; 04 a suitable drive 13; 14, so these drives are 13; 14 independently controllable.

Der jeweilige Antrieb 13; 14 der jeweiligen Rolle 03; 04 ist z. B. jeweils als ein von einer Steuereinheit 16 (Fig. 2) in seiner Drehzahl einstellbarer, vorzugsweise als ein in seiner Drehzahl regelbarer Antrieb 13; 14, insbesondere als ein in seiner Drehzahl elektrisch einstellbarer und/oder regelbarer Motor ausgebildet, wobei beide Antriebe 13; 14 von derselben Steuereinheit 16 steuerbar sein können. Die Steuereinheit 16 stellt im Fortdruck der Rollendruckmaschine die Drehzahl des jeweiligen Antriebs 13; 14 einer Rolle 03; 04 im Hinblick auf eine vorzugsweise innerhalb festgelegter Grenzen möglichst konstante Bahngeschwindigkeit v ein, welche die von der jeweiligen Rolle 03; 04 abgewickelte Materialbahn 01; 02 bei ihrem Abgang vom Rollenwechsler auf ihrem Transportweg z. B. zu einem Einzugswerk der Rollendruckmaschine aufweisen soll, wobei das Einzugswerk dem Rollenwechsler nachgeordnet ist. Durch den rotativen Antrieb 13; 14 wird die betreffende Materialbahn 01; 02 von der jeweiligen Rolle 03; 04 abgewickelt. Die Steuereinheit 16 gehört zum Rollenwechsler oder ist diesem zumindest zugeordnet. Die Drehzahl des jeweiligen Antriebs 13; 14 und die Drehzahl der jeweiligen Rolle 03; 04 stehen in einem festen Verhältnis zueinander. Im Fall eines als Zentrumsantrieb ausgebildeten Antriebs 13; 14 der jeweiligen Rolle 03; 04 entspricht die Drehzahl des jeweiligen Antriebs 13; 14 der Drehzahl der jeweiligen Rolle 03; 04. Andernfalls, z. B. bei einem Versatz zwischen einer Welle des jeweiligen Antriebs 13; 14 und der Achse 11; 12 der jeweiligen Rolle 03; 04, ist ein Übersetzungsverhältnis der jeweiligen Drehzahlen zu berücksichtigen (Fig. 1).The respective drive 13; 14 of the respective roller 03; 04 is z. B. each as one of a control unit 16 ( Fig. 2 ) adjustable in its speed, preferably as a variable in its speed drive 13; 14, in particular as an electrically adjustable in its speed and / or adjustable motor, both drives 13; 14 of the same control unit 16 can be controlled. The control unit 16 sets the speed of the respective drive 13 in the continuous printing of the web press; 14 of a roll 03; 04 with regard to a preferably within fixed limits as constant as possible web speed v, which the of the respective roller 03; 04 unwound web 01; 02 on their departure from the roll changer on their transport z. B. should have to a retraction of the web press, wherein the feed train is arranged downstream of the reel changer. By the rotary drive 13; 14, the relevant material web 01; 02 of the respective roller 03; 04 settled. The control unit 16 belongs to the reel changer or is at least assigned to it. The rotational speed of the respective drive 13; 14 and the rotational speed of the respective roller 03; 04 are in a fixed relationship to each other. In the case of a trained as a center drive drive 13; 14 of the respective roller 03; 04 corresponds to the rotational speed of the respective drive 13; 14 the speed of the respective roller 03; 04. Otherwise, z. B. at an offset between a shaft of the respective drive 13; 14 and the axle 11; 12 of the respective roller 03; 04, a gear ratio of the respective speeds must be considered ( Fig. 1 ).

Bei einem Rollenwechsler bildet z. B. die Rolle 03 mit der ersten Materialbahn 01 eine ablaufende, weitgehend abgewickelte Restrolle 03, wohingegen die Rolle 04 mit der zweiten Materialbahn 02 vom Rollenwechsler als eine Vorratsrolle 04 vorgehalten wird, wobei die zweite Materialbahn 02 noch vollständig auf der Vorratsrolle 04 aufgewickelt ist. Vorzugsweise kurz bevor die Restrolle 03 durch eine fortschreitende Abwicklung ihrer Materialbahn 01 bestimmungsgemäß, z. B. vollständig aufgebraucht ist, wird im Rollenwechsler die erste Materialbahn 01, d. h. die Materialbahn 01 der Restrolle 03, mit der zweiten Materialbahn 02 verbunden, indem die erste Materialbahn 01 z. B. durch Umlenkung an einer der vorzugsweise zwei am Tragrahmen 18 des Rollenwechslers angeordneten Umlenkspindeln 17, welche z. B. mittig zwischen den Tragarmen 06; 07 jeweils an gegenüberliegenden Enden des Tragrahmens 18 angeordnet sind, zur zweiten Materialbahn 02 geführt wird. Die erste Materialbahn 01 ist demnach von der Restrolle 03 über eine Umlenkspindel 17 zunächst zur Mantelfläche der Vorratsrolle 04 und von dort zum Einzugswerk der Rollendruckmaschine geführt, wobei die erste Materialbahn 01 entlang dieses Transportweges mit der Bahngeschwindigkeit v bewegt ist, solange auf diesem Transportweg z. B. keine Reibkräfte an der ersten Materialbahn 01 angreifen.In a reel changer forms z. B. the roller 03 with the first web 01 a running, largely unwound roll 03, whereas the roller 04 with the second web 02 is held by the roll changer as a supply roll 04, wherein the second web 02 is still completely wound on the supply roll 04. Preferably, just before the remaining role 03 by a progressive settlement of their material web 01 intended, z. B. is completely used up, the first web of material 01, d. H. the web 01 of the rest roller 03, connected to the second web 02 by the first web 01 z. B. by deflection on one of the two preferably arranged on the support frame 18 of the roll changer deflection spindles 17, which z. B. in the middle between the support arms 06; 07 are each arranged at opposite ends of the support frame 18, is guided to the second material web 02. The first material web 01 is therefore guided by the remaining roll 03 via a deflection spindle 17 first to the lateral surface of the supply roll 04 and from there to the retraction of the web press, wherein the first web 01 is moved along this transport path with the web speed v, as long as on this transport z. B. no frictional forces on the first material web 01 attack.

Auf diesem Transportweg der ersten Materialbahn 01 ist überdies ein Andrückelement 21 vorgesehen, mit welchem die erste Materialbahn 01 für eine z. B. an der Steuereinheit 16 einstellbare Dauer an die Mantelfläche der Vorratsrolle 04 andrückbar ist. Das Andrückelement 21 ist vorzugsweise durch eine von der Steuereinheit 16 ausgelöste Betätigung eines Stellelementes 22 radial an die Mantelfläche der Vorratsrolle 04 anstellbar und von dieser Mantelfläche nach Ablauf der z. B. an der Steuereinheit 16 einstellbaren Dauer auch wieder abstellbar. Das Andrückelement 21 ist z. B. als eine die erste Materialbahn 01 an die zweite Materialbahn 02 andrückende Bürste 21 ausgebildet. Die Anstellung des Andrückelementes 21 an die erste Materialbahn 01 erfolgt vorzugsweise für eine relativ kurze begrenzte Dauer und zumindest im Zeitpunkt des Verbindens der ersten Materialbahn 01 mit der zweiten Materialbahn 02. Das Angestelltsein des Andrückelementes 21 an die erste Materialbahn 01 bildet damit einen ersten Betriebszustand dieses Andrückelementes 21, wohingegen das Abgestelltsein des Andrückelementes 21 von der ersten Materialbahn 01 einen zweiten Betriebszustand dieses Andrückelementes 21 bildet.On this transport path of the first material web 01, a pressing element 21 is also provided, with which the first material web 01 for a z. B. on the control unit 16 adjustable duration of the lateral surface of the supply roll 04 is pressed. The pressing member 21 is preferably by a triggered by the control unit 16 actuation of an actuating element 22 radially against the lateral surface of the supply roll 04 and adjustable from this lateral surface after expiration of the z. B. on the control unit 16 adjustable duration also off again. The pressing member 21 is z. B. as a first material web 01 to the second web 02 pressing brush 21 is formed. The employment of the pressure element 21 to the first material web 01 is preferably carried out for a relatively short limited duration and at least at the time of joining the first web 01 with the second web 02. The employment of the pressing member 21 to the first web 01 thus forms a first operating state of this pressure element 21, whereas the shutdown of the pressure element 21 from the first material web 01 forms a second operating state of this pressure element 21.

Die beiden Materialbahnen 01; 02 werden vorzugsweise mittels einer Klebung miteinander verbunden. Um die Verbindung der zweiten Materialbahn 02 mit der ersten Materialbahn 01 auszuführen, beschleunigt der Antrieb 14 die Rolle 04 mit der zweiten Materialbahn 02 z. B. aus dem Stillstand auf die aktuelle Bahngeschwindigkeit v der ersten Materialbahn 01. Zumindest unmittelbar vor dem Zeitpunkt eines Herstellens der Verbindung der zweiten Materialbahn 02 mit der ersten Materialbahn 01 weisen beide Rollen 03; 04 dieselbe Umfangsgeschwindigkeit v03; v04 auf, d. h. die Umfangsgeschwindigkeit v03 der Rolle 03 mit der ersten Materialbahn 01 und die Umfangsgeschwindigkeit v04 der Rolle 04 mit der zweiten Materialbahn 02 sind in ihrem Wert gleich. Mit dem Zeitpunkt des Herstellens der Verbindung der zweiten Materialbahn 02 mit der ersten Materialbahn 01, d. h. zumindest zu dem Zeitpunkt, zu dem das Andrückelement 21 die erste Materialbahn 01 an die zweite Materialbahn 02 andrückt, wird die Umfangsgeschwindigkeit v03 der Rolle 03 mit der ersten Materialbahn 01 relativ zu der Umfangsgeschwindigkeit v04 der Rolle 04 mit der zweiten Materialbahn 02 reduziert und bleibt auch zumindest für die Dauer des Andrückens der ersten Materialbahn 01 an die zweite Materialbahn 02 herabsetzt, was später noch näher erläutert wird.The two webs 01; 02 are preferably connected to each other by means of a bond. To perform the connection of the second material web 02 with the first material web 01, the drive 14 accelerates the roller 04 with the second material web 02 z. B. from standstill to the current web speed v of the first material web 01. At least immediately before the time of producing the compound of the second material web 02 with the first material web 01 both rollers 03; 04 the same peripheral speed v03; v04 on, d. H. the circumferential speed v03 of the roller 03 with the first material web 01 and the peripheral speed v04 of the roller 04 with the second material web 02 are equal in value. At the time of establishing the connection of the second material web 02 with the first material web 01, d. H. At least at the time at which the pressing element 21 presses the first material web 01 against the second material web 02, the peripheral speed v03 of the roller 03 with the first material web 01 relative to the peripheral speed v04 of the roller 04 with the second material web 02 is reduced and remains at least for the duration of the pressing of the first material web 01 to the second material web 02 decreases, which will be explained later in more detail.

Nachdem beide Materialbahnen 01; 02 mittels der Klebung miteinander verbunden sind, wird die erste Materialbahn 01 von ihrer Rolle 03 durch eine im Transportweg der ersten Materialbahn 01 zwischen der Umlenkspindel 17 und dem Andrückelement 21 angeordnete Schneideinrichtung 23, z. B. ein in den Transportweg der ersten Materialbahn 01 eintauchendes Abschlagmesser 23, getrennt, wobei im Fortgang die zweite Materialbahn 02 von ihrer Rolle 04 abgewickelt wird. Auch die Betätigung der Schneideinrichtung 23 wird vorzugsweise von der Steuereinheit 16 ausgelöst.After both webs 01; 02 are connected to each other by means of gluing, the first material web 01 of its roller 03 by a transport path of the first material web 01 between the Umlenkspindel 17 and the pressure element 21 arranged cutting device 23, for. B. a dipping into the transport path of the first web of material 01 stripping knife 23, separated, being processed in the course of the second web 02 from its role 04. The actuation of the cutting device 23 is preferably triggered by the control unit 16.

Bevor die erste Materialbahn 01 und/oder die zweite Materialbahn 02 auf ihrem Transportweg zum Einzugswerk der Rollendruckmaschine den Rollenwechsler verlassen, ist vorzugsweise im Bereich des Abgangs der jeweiligen Materialbahn 01; 02 vom Rollenwechsler, d. h. in Transportrichtung nach oder hinter einer Anstellposition des Andrückelementes 21 an die erste Materialbahn 01, eine Anordnung aus mehreren Walzen 26; 27; 28 vorgesehen, wobei diese Walzen 26; 27; 28 im Gestell 24 des Rollenwechslers parallel zu den Achsen 11; 12 der Rollen 03; 04 angeordnet sind, wobei zumindest zwei dieser Walzen 26; 27 ortsfest angeordnet sind und eine im Transportweg der jeweiligen Materialbahn 01; 02 zwischen diesen beiden ortsfesten Walzen 26; 27 angeordnete dritte Walze 28 ortsvariabel angeordnet ist. Die ortsvariable dritte Walze 28 kann z. B. als eine an einem Hebel 29 um einen Schwenkpunkt schwenkbare Pendelwalze 28 oder als eine in einer Linearführung gelagerte Tänzerwalze 28 ausgebildet sein, wobei diese dritte Walze 28 ihre jeweilige Ortsposition in Abhängigkeit von einer in der jeweiligen Materialbahn 01; 02 vorherrschenden Bahnspannung einnimmt. In der Fig. 1 sind drei verschiedene Betriebsstellungen A; B; C beispielhaft für die an einem schwenkbaren Hebel 29 angeordnete Pendelwalze 28 dargestellt. Ausgehend von einer ersten als Referenz dienenden Betriebsstellung A hinsichtlich einer als normal geltenden Bahnspannung sind auch eine zweite Betriebsstellung B der Pendelwalze 28 mit einer durch die jeweilige Materialbahn 01; 02 an ihr wirkenden erhöhten Bahnspannung sowie eine dritte Betriebsstellung C der Pendelwalze 28 mit einer durch die jeweilige Materialbahn 01; 02 an ihr wirkenden verringerten Bahnspannung dargestellt. Eine erhöhte Bahnspannung bewirkt ein Zubewegen der ortsvariablen Walze 28 auf die ortsfesten Walzen 26; 27, wohingegen eine verringerte Bahnspannung ein sich Entfernen der ortsvariablen Walze 28 von den ortsfesten Walzen 26; 27 bedeutet. Die jeweilige Betriebsstellung A, B, C der ortsvariablen Walze 28 ist mit einer Messeinrichtung 31, z. B. mit einem Wegmesser 31, ermittelbar, wobei die Messeinrichtung 31 ihr jeweiliges z. B. elektrisches analoges oder digitales Messsignal 33 vorzugsweise an die Steuereinheit 16 zur dortigen Auswertung leitet. Das Messsignal 33 der Messeinrichtung 31 steht in einem direkten Zusammenhang mit der in der jeweiligen Materialbahn 01; 02 aktuell vorherrschenden Bahnspannung. Darüber hinaus kann vorzugsweise gleichfalls im Bereich des Abgangs der jeweiligen Materialbahn 01; 02 ein Geber 32 (Fig. 2) vorgesehen sein, z. B. ein Drehgeber 32, welcher mit einer der Walzen 26; 27; 28 zusammenwirken oder autark betrieben werden kann, mit welchem die aktuelle Bahngeschwindigkeit v der jeweiligen Materialbahn 01; 02 erfassbar ist, wobei ein wiederum z. B. elektrisches analoges oder digitales Messsignal 34 des Gebers 32 gleichfalls vorzugsweise an die Steuereinheit 16 zur dortigen Auswertung geleitet wird.Before the first material web 01 and / or the second material web 02 leave the reel changer on their transport path to the drawing-in unit of the web-fed printing press, the area of departure of the respective material web 01 is preferably 01; 02 from the roll changer, ie in the transport direction to or behind a setting position of the pressing element 21 to the first material web 01, an arrangement of a plurality of rollers 26; 27; 28 provided, these rollers 26; 27; 28 in the frame 24 of the roll changer parallel to the axes 11; 12 of the rollers 03; 04 are arranged, wherein at least two of these rollers 26; 27 are arranged stationary and one in the transport path of the respective web 01; 02 between these two stationary rollers 26; 27 arranged third roller 28 is arranged variable in place. The location variable third roller 28 may, for. B. as a pivotable about a pivot 29 to a lever pivoting roller 28 or as a mounted in a linear guide dancer roller 28, said third roller 28 their respective position in dependence on a location in the respective web 01; 02 prevailing web tension occupies. In the Fig. 1 are three different operating positions A; B; C exemplified for the arranged on a pivotable lever 29 pendulum roller 28. Starting from a first operating position A serving as a reference with respect to a web tension which is considered normal, a second operating position B of the pendulum roller 28 is also provided by a respective material web 01; 02 at her acting elevated web tension and a third operating position C of the pendulum roller 28 with a through the respective web 01; 02 shown acting on her reduced web tension. Increased web tension causes the location-variable roller 28 to be fed to the stationary rollers 26; 27, whereas a reduced web tension is a removal of the location variable roller 28 from the stationary rollers 26; 27 means. The respective operating position A, B, C of the variable position roller 28 is connected to a measuring device 31, z. B. with a odometer 31, detectable, the measuring device 31 their respective z. B. electrical analog or digital measurement signal 33 preferably leads to the control unit 16 for local evaluation. The measuring signal 33 the measuring device 31 is in a direct relationship with the in the respective web 01; 02 currently prevailing web tension. In addition, preferably also in the region of the departure of the respective material web 01; 02 a transmitter 32 ( Fig. 2 ), z. B. a rotary encoder 32, which with one of the rollers 26; 27; Cooperate 28 or can be operated independently, with which the current web speed v of the respective web 01; 02 is detectable, with a turn z. B. electrical analog or digital measurement signal 34 of the encoder 32 is also preferably directed to the control unit 16 for local evaluation.

Durch die insbesondere beim Vorgang des Verbindens der ersten Materialbahn 01 mit der zweiten Materialbahn 02 vorgenommene Anstellung des Andrückelementes 21 an die erste Materialbahn 01 wird auf diese erste Materialbahn 01 eine Reibkraft ausgeübt, die der Bewegung der ersten Materialbahn 01 entgegenwirkt. Durch diese Reibkraft wird zumindest zweierlei bewirkt. Zum einen steigt die Bahnspannung zumindest auf dem Transportweg der ersten Materialbahn 01 von dem angestellten Andrückelement 21 bis zur ortsvariablen Walze 28 an, was eine veränderte Ortsposition der ortsvariablen Walze 28 zur Folge hat. Beispielsweise verlässt die ortsvariable Walze 28 ihre erste Betriebsstellung A und nimmt ihre zweite Betriebsstellung B ein, wodurch an der zugeordneten Messeinrichtung 31 ein mit der veränderten Ortsposition der ortsvariablen Walze 28 korrelierendes Messsignal 33 erzeugt und an die Steuereinheit 16 geleitet wird. Andererseits bewirkt die Reibkraft, dass die Bahnspannung in einem Abschnitt des Transportweges der ersten Materialbahn 01 von der Restrolle 03, zumindest aber von der Umlenkspindel 17 bis zum angestellten Andrückelement 21 zusammenbricht, wodurch diese Materialbahn 01 zumindest in diesem Abschnitt ihres Transportweges locker wird, was in der Fig. 1 in dem Abschnitt zwischen der Umlenkspindel 17 und dem angestellten Andrückelement 21 durch einen geschwungen Verlauf des Transportweges der ersten Materialbahn 01 dargestellt ist. Ein nach dem Vorgang des Verbindens der ersten Materialbahn 01 mit der zweiten Materialbahn 02 in diesem Abschnitt in den Transportweg der ersten Materialbahn 01 eintauchendes Abschlagmesser 23 kann an der ersten Materialbahn 01 keinen definierten Schnitt ausführen, da das Abschlagmesser 23 die locker gewordene erste Materialbahn 01 lediglich wegdrückt, aber nicht schneidet. Der Schnitt erfolgt z. B. erst, nachdem das Andrückelement 21 von der ersten Materialbahn 01 wieder abgestellt ist, wodurch jedoch an der ersten Materialbahn 01 eine unregelmäßige und vor allem viel zu lange Restfahne ausgebildet wird, wobei sich diese Restfahne nachteilig auf die Weiterverarbeitung der Materialbahn 01; 02 in der dem Rollenwechsler nachgeordneten Rollendruckmaschine auswirkt. Als Restfahne wird derjenige Teil der ersten Materialbahn 01 bezeichnet, der sich nach der z. B. durch die Klebung bewirkten Verbindungsstelle zwischen der ersten Materialbahn 01 und der zweiten Materialbahn 02 an der ersten Materialbahn 01 bis zu deren Trennstelle von ihrer Rolle 03 ausbildet, wobei die Restfahne beim dieser Verbindungsstelle nachfolgenden Transport der Materialbahnen 01; 02 parallel zur mit der ersten Materialbahn 01 verbundenen zweiten Materialbahn 02 verläuft und vorübergehend eine Doppellagigkeit der Materialbahnen 01; 02 erzeugt.As a result of the adjustment of the pressing element 21 to the first material web 01, in particular during the process of joining the first material web 01 to the second material web 02, a frictional force is exerted on this first material web 01, which counteracts the movement of the first material web 01. This frictional force causes at least two things. On the one hand, the web tension increases, at least on the transport path of the first material web 01, from the employed pressing element 21 to the location-variable roller 28, which results in a changed spatial position of the location-variable roller 28. For example, the location-variable roller 28 leaves its first operating position A and assumes its second operating position B, whereby at the associated measuring device 31 a correlated with the changed position of the location-variable roller 28 measuring signal 33 is generated and sent to the control unit 16. On the other hand, the frictional force causes the web tension in a portion of the transport path of the first material web 01 of the remaining roll 03, but at least of the Umlenkspindel 17 collapses to the contracted Andrückelement 21, whereby this material web 01 is loose at least in this section of their transport path, which in of the Fig. 1 in the section between the deflection spindle 17 and the employed pressure element 21 is represented by a curved course of the transport path of the first material web 01. An after the process of connecting the first material web 01 with the second material web 02 in this section in the transport path of the first material web 01 dipping teeing knife 23 may at the first material web 01 do not perform a defined cut, since the cut-off blade 23 merely pushes away the loosened first material web 01, but does not cut. The cut is made z. B. only after the pressing member 21 is turned off by the first material web 01 again, whereby, however, on the first material web 01 an irregular and, above all, much too long a residual flag is formed, with this residual flag adversely affect the further processing of the web 01; 02 in the roll changer downstream web printing press. As the remainder of that part of the first web of material 01 is referred to, which after the z. B. caused by the bonding connection between the first web of material 01 and the second web of material 02 on the first material web 01 up to the separation point of their role 03 forms, the remaining flag at this junction subsequent transport of the webs 01; 02 parallel to the second material web 02 connected to the first material web 01 extends and temporarily a double layer of the material webs 01; 02 generated.

Zur Vermeidung dieser Nachteile ist die Vorrichtung zum Verbinden der ersten Materialbahn 01 mit der zweiten Materialbahn 02 derart ausgebildet, dass die Steuereinheit 16 an dem Antrieb 13 der Rolle 03 mit der ersten Materialbahn 01 für den Betriebszustand des an die erste Materialbahn 01 angestellten Andrückelementes 21 eine andere Drehzahl einstellt als für den Betriebszustand des von der ersten Materialbahn 01 abgestellten Andrückelementes 21. Dabei setzt die Steuereinheit 16 die Drehzahl des die Rolle 03 mit der ersten Materialbahn 01 antreibenden Antriebs 13 und damit auch die Umfangsgeschwindigkeit v03 der Rolle 03 mit der ersten Materialbahn 01 zumindest für die Dauer des Andrückens der ersten Materialbahn 01 an die zweite Materialbahn 02 herab, was zuvor bereits erwähnt wurde. Überdies kann vorgesehen sein, dass die Steuereinheit 16 die Drehzahl des die Rolle 03 mit der ersten Materialbahn 01 antreibenden Antriebs 13 um einen an der Steuereinheit 16 einstellbaren Betrag herabsetzt oder dass die Steuereinheit 16 die Drehzahl des die Rolle 03 mit der ersten Materialbahn 01 antreibenden Antriebs 13 proportional zu der von dem Andrückelement 21 auf die erste Materialbahn 01 ausgeübten Reibkraft herabsetzt. Nach dem Abstellen des Andrückelementes 21 von der ersten Materialbahn 01 oder vorzugsweise nach dem Trennen der ersten Materialbahn 01 von ihrer Rolle 03 vermindert die Steuereinheit 16 die Drehzahl des die Rolle 03 mit der ersten Materialbahn 01 antreibenden Antriebs 13 bis zum Stillstand dieser Rolle 03.To avoid these disadvantages, the device for connecting the first material web 01 to the second material web 02 is designed such that the control unit 16 on the drive 13 of the roller 03 with the first material web 01 for the operating state of the pressed against the first web 01 pressing element 21 a In this case, the control unit 16 sets the speed of the roller 03 driving the first material web 01 drive 13 and thus the peripheral speed v03 of the roller 03 with the first material web 01st at least for the duration of pressing the first material web 01 to the second material web 02 down, which has already been mentioned above. Moreover, it can be provided that the control unit 16 reduces the rotational speed of the drive 03 driving the roller 03 with the first material web 01 by an adjustable amount on the control unit 16 or that the control unit 16, the rotational speed of the roller 03 with the first material web 01 driving drive 13 proportional to that of the pressure element 21 reduces frictional force exerted on the first material web 01. After stopping the pressing element 21 of the first web 01 or preferably after the separation of the first web 01 from its role 03, the control unit 16 reduces the speed of the roller 03 with the first material web 01 driving 13 until the standstill of this role 03.

Durch eine von der Steuereinheit 16 in Abhängigkeit von der Anstellung des Andrückelementes 21 an die erste Materialbahn 01 gesteuerte Herabsetzung der Drehzahl des die Rolle 03 mit der ersten Materialbahn 01 antreibenden Antriebs 13 wird erreicht, dass die Bahnspannung in dem Abschnitt des Transportweges der ersten Materialbahn 01 von der Restrolle 03, zumindest aber von der Umlenkspindel 17 bis zum angestellten Andrückelement 21 nicht zusammenbricht, sondern trotz der von dem Andrückelement 21 auf die erste Materialbahn 01 ausgeübten, der Bewegung dieser Materialbahn 01 entgegen gerichteten Reibkraft erhalten bleibt. Durch die Steuerung der Drehzahl des die Rolle 03 mit der ersten Materialbahn 01 antreibenden Antriebs 13 wird in dem genannten Abschnitt des Transportweges der ersten Materialbahn 01 die Bahnspannung innerhalb für sie zulässiger Toleranzwerte vorzugsweise konstant gehalten, indem die Drehzahl des betreffenden Antriebs 13 in Korrelation zu der von dem Andrückelement 21 auf die erste Materialbahn 01 ausgeübten Reibkraft von der Steuereinheit 16 einmalig auf einen zur vorangegangenen Einstellung geringeren Wert eingestellt oder durch eine mehrfach veränderte Einstellung auch nachgeführt wird. Es versteht sich, dass mit der Anstellung des Andrückelementes 21 an die erste Materialbahn 01 die Bahngeschwindigkeit v der ersten Materialbahn 01 im Bereich ihres Abganges, d. h. also in Transportrichtung nach oder hinter der Anstellposition des Andrückelementes 21 an diese erste Materialbahn 01, zunächst einmal einen geringeren Wert aufweist als auf ihrem Transportweg von ihrer Rolle 03 bis zu dieser Anstellposition des Andrückelementes 21, denn durch die Anstellung des Andrückelementes 21 an die erste Materialbahn 01 wird diese erste Materialbahn 01 mit Wirkung für den Bereich ihres Abganges durch die an der ersten Materialbahn 01 angreifenden Reibkraft abgebremst, d. h. die auf ihrem Transportweg ermittelbare oder tatsächlich ermittelte Bahngeschwindigkeit v ist geringer als die Umfangsgeschwindigkeit v03 der diese erste Materialbahn 01 abwickelnden Rolle 03.By a controlled by the control unit 16 in response to the employment of the pressing member 21 to the first web 01 reduction in the speed of the roller 03 with the first web 01 driving 13 is achieved that the web tension in the portion of the transport path of the first web 01 from the residual role 03, but at least not from the deflection spindle 17 to the employed pressure element 21 collapses, but despite the force exerted by the pressing member 21 on the first material web 01, the movement of this material web 01 oppositely directed frictional force is maintained. By controlling the rotational speed of the drive 13 driving the roller 03 with the first material web 01, the web tension is preferably kept constant within the said section of the transport path of the first material web 01 within permissible tolerance values by the rotational speed of the relevant drive 13 in correlation to the The frictional force exerted by the pressure element 21 on the first web of material 01 is set once by the control unit 16 to a value that is lower than that of the previous setting or is also tracked by a multi-changed setting. It is understood that with the employment of the pressing element 21 to the first material web 01, the web speed v of the first material web 01 in the region of their departure, ie in the transport direction to or behind the Anstellposition of the pressure element 21 to this first material web 01, initially a smaller Has value as on their transport from their role 03 to this Anstellposition of the pressing element 21, because by the employment of the pressure element 21 to the first material web 01, this first material web 01 with effect for the area of their departure by acting on the first material web 01 Frictional force braked, ie the web speed v determined or actually determined on its transport path is less than the peripheral speed v03 of the roller 03 unwinding this first material web 01.

Durch die von der Steuereinheit 16 ausgeführte Änderung der Drehzahl des die Rolle 03 mit der ersten Materialbahn 01 antreibenden Antriebs 13 wird die Umfangsgeschwindigkeit v03 der Rolle 03 mit der ersten Materialbahn 01 reduziert. Infolgedessen verringert sich auch die Bahngeschwindigkeit v der ersten Materialbahn 01 auf ihrem Transportweg von ihrer Rolle 03 bis zu der Anstellposition des Andrückelementes 21 relativ zu ihrem Wert vor dem Zeitpunkt der Anstellung des Andrückelementes 21 an die erste Materialbahn 01. Zu diesem Zeitpunkt ist die aktuelle Umfangsgeschwindigkeit v03 der Rolle 03 mit der ersten Materialbahn 01 auch im Verhältnis zu der aktuellen Umfangsgeschwindigkeit v04 der Rolle 04 mit der zweiten Materialbahn 02 reduziert, denn die von der Steuereinheit 16 mit dem Antrieb 14 eingestellte Drehzahl der Rolle 04 mit der zweiten Materialbahn 02 bleibt von der Änderung des Betriebszustandes des Andrückelementes 21 unberührt. Um eine möglichst schnelle, d. h. verzögerungsfreie Anpassung der Umfangsgeschwindigkeit v03 der Rolle 03 mit der ersten Materialbahn 01 an die neue durch die Anstellung des Andrückelementes 21 an die erste Materialbahn 01 hervorgerufene Betriebssituation zu erzielen, ist es vorteilhaft, diese Anpassung in der Drehzahl des die Rolle 03 mit der ersten Materialbahn 01 antreibenden Antriebs 13 in Abhängigkeit vom Betriebszustand des Andrückelementes 21 vorzunehmen und insbesondere ausgelöst durch eine auf die erste Materialbahn 01 gerichtete Bewegung des Andrückelementes 21 einzuleiten. Die Steuereinheit 16 kann somit die Einstellung der bisherigen Drehzahl des Antriebs 13 ausgelöst durch die auf die erste Materialbahn 01 gerichtete Bewegung des Andrückelementes 21 durch Wahl einer anderen Sollvorgabe binnen kürzester Zeit, d. h. nahezu schlagartig, auf einen anderen Wert umschalten. Die Steuereinheit 16 kann z. B. die Auslösung des Steuersignals an das Stellelement 22 zur Absenkung des Andrückelementes 21, d. h. zu dessen Anstellung an die erste Materialbahn 01 nutzen, um damit gleichzeitig auch die Anpassung in der Drehzahl des Antriebs 13 einzuleiten. Entsprechend kann die Steuereinheit 16 auch ein Steuersignal hinsichtlich einer Rückstellung des Andrückelementes 21 in dessen von der ersten Materialbahn 01 abgestellten Betriebszustand nutzen, um erneut z. B. die frühere Drehzahl des Antriebs 13 oder eine andere jetzt geeignete Drehzahl an diesem Antrieb 13 einzustellen.By the executed by the control unit 16 change in the rotational speed of the roller 03 with the first material web 01 driving 13, the peripheral speed v03 of the roller 03 is reduced with the first material web 01. As a result, the web speed v of the first material web 01 on its transport path from its roller 03 to the setting position of the pressing element 21 decreases relative to its value before the date of employment of the pressing element 21 to the first material web 01. At this time, the current peripheral speed v03 of the roller 03 with the first material web 01 is also reduced in relation to the current peripheral speed v04 of the roller 04 with the second material web 02, because the speed set by the control unit 16 with the drive 14 of the roller 04 with the second material web 02 remains from the Change in the operating state of the pressure element 21 untouched. In order to achieve the fastest possible, ie delay-free adjustment of the circumferential speed v03 of the roller 03 with the first material web 01 to the new caused by the employment of the pressure element 21 to the first material web 01 operating situation, it is advantageous this adjustment in the speed of the role 03 with the first material web 01 driving drive 13 in response to the operating state of the pressure element 21 make and in particular triggered by a directed to the first material web 01 movement of the pressure element 21 initiate. The control unit 16 can thus trigger the adjustment of the previous rotational speed of the drive 13 by the directed to the first web 01 movement of the pressing member 21 by selecting a different target within a very short time, ie almost suddenly switch to another value. The control unit 16 may, for. B. the triggering of the control signal to the actuator 22 for lowering the pressure element 21, ie to use it to the first web of material 01, in order to simultaneously initiate the adjustment in the rotational speed of the drive 13. Accordingly, the control unit 16 may also use a control signal with respect to a provision of the pressure element 21 in its parked from the first material web 01 operating state to again z. B. the earlier speed of the drive 13 or another now suitable speed at this drive 13 set.

Als weiterer Vorteil ergibt sich, dass in die in dem Abschnitt ihres Transportweges von der Restrolle 03, zumindest aber von der Umlenkspindel 17 bis zum angestellten Andrückelement 21 trotz der vom Andrückelement 21 ausgeübten Reibkraft straff gehaltene erste Materialbahn 01 das Abschlagmesser 23 zur Ausführung eines definierten, gleichmäßigen Schnittes eintauchen kann und die frei geführte erste Materialbahn 01 nicht lediglich wegdrückt, sodass die Restfahne der ersten Materialbahn 01 durch den an einer festgelegten Stelle erfolgenden Schnitt eine zuvor eingestellte Länge aufweist.Another advantage is that in the section of their transport from the rest of the roll 03, but at least from the Umlenkspindel 17 to the employed Andrückelement 21 despite the force exerted by the pressing element 21 frictionally held first web of material 01, the blasting knife 23 for performing a defined can dive uniform cut and the freely guided first material web 01 not only pushes away, so that the remaining lug of the first material web 01 by taking place at a predetermined point section has a previously set length.

Fig. 2 zeigt ein Blockschaltbild einer Steuerung des in der Fig. 1 beispielhaft dargestellten Rollenwechslers. Der Steuereinheit 16 werden sowohl das mit der veränderten Ortsposition einer ortsvariablen Walze 28 und damit mit der Bahnspannung korrelierende Messsignal 33 z. B. eines Wegmessers 31 als auch das mit der Bahngeschwindigkeit v der jeweiligen Materialbahn 01; 02 korrelierende Messsignal 34 z. B. eines Drehgebers 32 zugeleitet, wobei diese Messsignale 33; 34 jeweils z. B. im Bereich des Abganges der Materialbahnen 01; 02 erfasst werden. In z. B. unterschiedlichen Funktionseinheiten 36; 37; 38; 39 der Steuereinheit 16 wird gegebenenfalls unter Berücksichtigung zuvor in der Steuereinheit 16 gespeicherter Werte für bestimmte Parameter und/oder Sollvorgaben aus einem oder in Kombination aus beiden dieser jeweils aktuelle Istwerte bildenden Messsignale 33; 34 z. B. die aktuelle Bahngeschwindigkeit v der jeweiligen Materialbahn 01; 02 und/oder der aktuelle Durchmesser der Restrolle 03, von der die erste Materialbahn 01 gerade abgewickelt wird, und/oder die aktuelle Drehzahl des Antriebs 13 dieser an einem drehbaren Konus 08 gelagerten Restrolle 03 ermittelt, vorzugsweise berechnet. Die Steuereinheit 16 verfügt dann z. B. über einen Istwert hinsichtlich der aktuellen Bahngeschwindigkeit v der jeweiligen Materialbahn 01; 02 zumindest aus dem in Transportrichtung nach oder hinter einer Anstellposition des Andrückelementes 21 an die erste Materialbahn 01 liegenden Bereich. Fig. 2 shows a block diagram of a controller of the in the Fig. 1 exemplified reel changer. The control unit 16 are both the correlated with the changed position of a location variable roller 28 and thus with the web tension measurement signal 33 z. B. an odometer 31 as well as the web speed v of the respective web 01; 02 correlating measuring signal 34 z. B. a rotary encoder 32, these measuring signals 33; 34 each z. B. in the area of the departure of the webs 01; 02 are recorded. In z. B. different functional units 36; 37; 38; 39 of the control unit 16 is optionally, taking into account previously stored in the control unit 16 values for certain parameters and / or setpoints from one or in combination of both of these each actual values actual values forming measuring signals 33; 34 z. B. the current web speed v of the respective web 01; 02 and / or the current diameter of the remaining roll 03, from which the first material web 01 is being unwound, and / or the current speed of the drive 13 of this mounted on a rotatable cone 08 residual roll 03 determined, preferably calculated. The control unit 16 then has z. B. via an actual value with respect to the current web speed v of the respective web 01; 02 at least from the lying in the transport direction to or behind a Anstellposition of the pressure element 21 to the first web of material 01 area.

Insbesondere das mit der Bahnspannung korrelierende Messsignal 33 wird einem z. B. zur Steuereinheit 16 gehörenden Regler 41 zugeführt, wobei der Regler 41 z. B. im Abgleich mit der aus der aktuellen Bahngeschwindigkeit v der jeweiligen Materialbahn 01; 02 berechneten Drehzahl des Antriebs 13 und gegebenenfalls unter Berücksichtigung zumindest eines zuvor in der Steuereinheit 16 gespeicherten Wertes für eine bestimmte Sollvorgabe die Drehzahl des Antriebs 13 bei Bedarf neu einstellt und gegebenenfalls infolge einer an der für eine bestimmte Betriebssituation vorgesehenen Sollvorgabe orientierten Regelung nachführt, wobei diese Betriebssituation, die jeweils eine an unterschiedlichen Sollvorgaben orientierte Regelung hervorruft, z. B. durch das an die erste Materialbahn 01 angestellte oder davon abgestellte Andrückelement 21 gekennzeichnet ist. Somit ist die Steuereinheit 16 derart ausgebildet, dass sie insbesondere in Abhängigkeit vom Betriebszustand des Andrückelementes 21 am Antrieb 13 der Restrolle 03 unterschiedliche Drehzahlen einstellt, was z. B. anhand vorgegebener Werte erfolgt, und/oder gegebenenfalls mittels eines Reglers 41 die jeweils eingestellte Drehzahl im Hinblick auf eine vorzugsweise innerhalb festgelegter Grenzen möglichst konstante Bahnspannung und/oder insbesondere hinsichtlich des Bereichs des Abganges der Materialbahnen 01; 02 auf eine konstante Bahngeschwindigkeit v innerhalb zuvor festgelegter Toleranzwerte regelt. Im Fall einer Regelung, d. h. Nachführung einer eingestellten Drehzahl ist diese Regelung der zuvor durch die Steuereinheit 16 getroffenen Einstellung der Drehzahl des Antriebs 13 überlagert. Die Steuereinheit 16 legt somit zunächst ein Niveau für die vom Betriebszustand des Andrückelementes 21 abhängige Drehzahl des Antriebs 13 der Restrolle 03 fest, für dessen Einhaltung innerhalb festgelegter Toleranzwerte die nachgelagerte Regelung im Fortgang des Abwickelns der ersten Materialbahn 01 sorgt.In particular, the correlating with the web tension measuring signal 33 is a z. B. belonging to the control unit 16 controller 41, wherein the controller 41 z. B. in comparison with the from the current web speed v of the respective web 01; 02 calculated speed of the drive 13 and possibly taking into account at least one previously stored in the control unit 16 value for a specific target specification, the speed of the drive 13 if necessary re-sets if necessary and as a result of an oriented at the intended operating conditions target specification controls tracking, this Operating situation, each causing a different target specifications oriented control, z. B. is characterized by the employees to the first web 01 or parked from it pressure element 21. Thus, the control unit 16 is designed such that it sets in particular depending on the operating state of the pressing member 21 on the drive 13 of the remaining role 03 different speeds, which z. B. based on predetermined values, and / or optionally by means of a regulator 41, the respectively set speed with respect to a preferably within predetermined limits as constant as possible web tension and / or in particular with respect to the area of the outlet of the webs 01; 02 to a constant web speed v within predetermined tolerance values. In the case of a control, ie tracking a set speed, this control is superimposed on the previously made by the control unit 16 setting the speed of the drive 13. The control unit 16 thus sets first a level for the dependent of the operating condition of the pressing element 21 rotational speed of the drive 13 of the remaining role 03, for compliance within defined tolerance values, the downstream control in the course of unwinding the first material web 01 provides.

Die den Antriebs 13 der Restrolle 03 steuernde Steuereinheit 16 ist damit in der Lage, zwischen verschiedenen Drehzahleinstellungen und/oder Regelstrategien auszuwählen und in Abhängigkeit vom Betriebszustand des Andrückelementes 21 bedarfsweise umzuschalten, wobei die Umschaltung durch ein z. B. mit dem Stellelement 22 des Andrückelementes 21 in Verbindung stehendes Steuersignal ausgelöst wird. Die verschiedenen Regelstrategien können auch nach dem berechneten, aktuellen Durchmesser der Restrolle 03 differenziert sein, wobei bei einem Durchmesser der Restrolle 03 von z. B. weniger als 500 mm nur die Hälfte des zum Aufrechterhalten der Bahnspannung benötigten, mit einer ersten bestimmten Drehzahl korrelierenden Drehmomentes am Antrieb 13 der Restrolle 03 eingestellt wird, wohingegen bei einem Durchmesser der Restrolle 03 von z. B. mindestens 500 mm das zum Aufrechterhalten der Bahnspannung benötigte, mit einer zweiten bestimmten Drehzahl korrelierende Drehmoment mit seinem vollen Wert am Antrieb 13 der Restrolle 03 eingestellt wird.The drive 13 of the remaining role 03 controlling unit 16 is thus able to select between different speed settings and / or control strategies and switch as needed depending on the operating state of the pressure element 21, wherein the switching by a z. B. is triggered with the control element 22 of the pressure element 21 in connection standing control signal. The various control strategies can also be differentiated according to the calculated, current diameter of the remaining roll 03, wherein at a diameter of the remaining roll 03 of z. B. less than 500 mm only half of the required to maintain the web tension, correlated with a first specific speed torque on the drive 13 of the remaining roller 03 is set, whereas at a diameter of the remaining role 03 of z. B. at least 500 mm needed to maintain the web tension, with a second specific speed correlating torque is set with its full value on the drive 13 of the remaining role 03.

BezugszeichenlisteLIST OF REFERENCE NUMBERS

0101
Materialbahn, Papierbahn, ersteMaterial web, paper web, first
0202
Materialbahn, Papierbahn, zweiteMaterial web, paper web, second
0303
Rolle, RestrolleRoll, rest roll
0404
Rolle, VorratsrolleRoll, supply roll
0505
--
0606
TragarmBeam
0707
TragarmBeam
0808
Konuscone
0909
Konuscone
1010
--
1111
Achseaxis
1212
Achseaxis
1313
Antriebdrive
1414
Antriebdrive
1515
--
1616
Steuereinheitcontrol unit
1717
UmlenkspindelUmlenkspindel
1818
Tragrahmensupporting frame
1919
TragrahmenachseSupporting frame axis
2020
--
2121
Andrückelement, BürstePressing element, brush
2222
Stellelementactuator
2323
Schneideinrichtung, AbschlagmesserCutting device, cutting knife
2424
Gestellframe
2525
--
2626
Walzeroller
2727
Walzeroller
2828
Walze, Pendelwalze, TänzerwalzeRoller, pendulum roller, dancer roller
2929
Hebellever
3030
--
3131
Messeinrichtung, WegmesserMeasuring device, odometer
3232
Geber, DrehgeberEncoder, encoder
3333
Messsignalmeasuring signal
3434
Messsignalmeasuring signal
3535
--
3636
Funktionseinheitfunctional unit
3737
Funktionseinheitfunctional unit
3838
Funktionseinheitfunctional unit
3939
Funktionseinheitfunctional unit
4040
--
4141
Reglerregulator
vv
Bahngeschwindigkeitweb speed
v03v03
Umfangsgeschwindigkeitcircumferential speed
v04v04
Umfangsgeschwindigkeitcircumferential speed
AA
Betriebsstellungoperating position
BB
Betriebsstellungoperating position
CC
Betriebsstellungoperating position

Claims (28)

  1. Device for connecting a first material web (01) to a second material web (02), at least the first material web (01) being wound into a roll (03), comprising a drive (13) rotating this roll (03) for unwinding its material web (01), at least the first material web (01) continuously unwound from its roll (03) and fed to the second material web (02) being in movement at the time of connection of the two material webs (01; 02), and comprising a pressure element (21) pressing the first material web (21) at least at the time of connection of the two material webs (01; 02) onto the second material web (02), at least the roll (03) of the first material web (01) being driven at its axis (11) at its speed by the drive (13), a control unit (16) setting at this drive (13), for the operating state of the pressure element (21) thrown onto the first material web (01), a speed differing from that from the operating state of the pressure element (21) thrown off the first material web (01), both material webs (01; 02) being wound in each case into a roll (03; 04), both rolls (03; 04) having in each case a separate drive (13; 14), these drives (13; 14) being controllable independently of one another by the control unit (16), characterized in that the drives (13; 14) set in each case a circumferential velocity (v03; v04) with their respective speed at the circumference of the respective roll (03; 04) driven by them, the control unit (16), by means of a change in the setting of the speed of the roll (03) of the first material web (01), setting the circumferential velocity (v03) of this roll (03), from the time when the pressure element (21) presses the first material web (01) onto the second material web (02), to a value reduced relative to the circumferential velocity (v04) of the roll (04) with the second material web (02).
  2. Device according to Claim 1, characterized in that the control unit (16) reduces the speed of the drive (13) driving the roll (03) with the first material web (01) at least for the duration of the pressing of the first material web (01) onto the second material web (02).
  3. Device according to Claim 1, characterized in that the control unit (16) reduces the speed of the drive (13) driving the roll (03) with the first material web (01) by an amount settable on the control unit (16).
  4. Device according to Claim 1, characterized in that the control unit (16) reduces the speed of the drive (13) driving the roll (03) with the first material web (01) in proportion to a frictional force exerted by the pressure element (21) on the first material web (01).
  5. Device according to Claim 1, characterized in that the control unit (16) reduces the speed of the drive (13) driving the roll (03) with the first material web (01) in correlation with the frictional force exerted by the pressure element (21) on the first material web (01) once or by a repeatedly changed setting.
  6. Device according to Claim 1, characterized in that the control unit (16) sets the speed at the drive (13) driving the roll (03) with the first material web (01) as a function of a measured signal (33) correlating with the web tension detected on departure of the respective material web (01; 02) and/or as a function of a measured signal (34) correlating with the web velocity (v) detected on departure of the respective material web (01; 02).
  7. Device according to Claim 6, characterized in that the control unit (16) calculates the current web velocity (v) of the respective material web (01; 02) or the current speed of the drive (13) from the measured signals (33; 34).
  8. Device according to Claim 1, characterized in that the control unit (16) sets the speed in each case on the basis of or in comparison with a specification at the drive (13) driving the roll (03) with the first material web (01), the specification for the operating state of the pressure element (21) thrown onto the first material web (01) differing from the specification for the operating state of the pressure element (21) thrown off the first material web (01).
  9. Device according to Claim 8, characterized in that at least one value for the respective specification is stored in the control unit (16).
  10. Device according to Claim 1, characterized in that the drive (13) driving the roll (03) with the first material web (01) is in the form of a motor which can be set or regulated in its speed by the control unit (16).
  11. Device according to Claim 1, characterized in that the roll (03) with the first material web (01) is axially aligned by a cooperating pair of cones (08).
  12. Device according to Claim 11, characterized in that the drive (13) driving the roll (03) with the first material web (01) acts on the cones (08) and causes the roll (03) mounted on the rotatable cones (08) to execute a rotational movement.
  13. Device according to Claim 1, characterized in that the pressure element (21) is in the form of a brush (21) which can be thrown onto the first material web (01).
  14. Device according to Claim 1, characterized in that an adhesive bond connects the two material webs (01; 02) to one another.
  15. Device according to Claim 1, characterized in that the respective axes (11; 12) of the two rolls (03; 04) are a distance apart.
  16. Device according to Claim 1, characterized in that both rolls (03; 04) are axially aligned in each case on a cooperating pair of cones (08; 09).
  17. Device according to Claim 1, characterized in that a cutting device (23) is provided, the cutting device (23) cutting the first material web (01) from its roll (03) after the connection of the two material webs (01; 02).
  18. Device according to Claim 1, characterized in that, after the pressure element (21) has been thrown off the first material web (01), the control unit (16) reduces the speed of the drive (13) driving the roll (03) with the first material web (01) until the stoppage of this roll (03).
  19. Device according to Claim 17, characterized in that, after separation of the first material web (01) from its roll (03), the control unit (16) reduces the speed of the drive (13) driving the roll (03) with the first material web (01) until the stoppage of this roll (03).
  20. Device according to Claim 1, characterized in that, by means of a regulator (41) and as a function of the operating state of the pressure element (21), the control unit (16) regulates the speed set at the drive (13) of the roll (03) to be unwound, with respect to a web velocity (v) constant within fixed limits, within tolerance values fixed beforehand.
  21. Device according to Claim 20, characterized in that, by means of the regulator (41) and as a function of the operating state of the pressure element (21), the control unit (16) regulates the speed set at the drive (13) of the roll (03) to be unwound, with respect to a web tension constant within fixed limits, within tolerance values fixed beforehand.
  22. Device according to Claim 1, characterized in that, as a function of the operating state of the pressure element (21), the control unit (16) switches between different settings in the speed of the drive (13) driving the roll (03) with the first material web (01) and/or between different control strategies with respect to the speed of this drive (13).
  23. Device according to Claim 22, characterized in that the control unit (16) selects its current control strategy as a function of a calculated, actual diameter of the roll (03) unwinding the first material web (01).
  24. Device according to Claim 1, characterized in that the roll (04) of the second material web (02) is driven at its axis (12) at its speed by its drive (14).
  25. Device according to Claim 1, characterized in that the control unit (16) accelerates the roll (04) of the second material web (02) from the stationary state to the circumferential velocity (v03) of the roll (03) with the first material web (01).
  26. Device according to Claim 1, characterized in that, at least immediately before the time when the pressure element (21) presses the first material web (01) onto the second material web (02), the circumferential velocity (v03) of the roll (03) with the first material web (01) and the circumferential velocity (v04) of the roll (04) with the second material web (02) are identical in their value.
  27. Device according to Claim 1, characterized in that the material webs (01; 02) are formed in each case as a paper web (01; 02).
  28. Device according to Claim 1, characterized in that it is arranged in a reel changer for a web-fed printing press.
EP07114653A 2006-09-08 2007-08-21 Device for connecting a first web with a second web Active EP1897830B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102006042217A DE102006042217B4 (en) 2006-09-08 2006-09-08 A method performed in a roll changer for a web-fed printing machine for joining a first material web to a second material web

Publications (3)

Publication Number Publication Date
EP1897830A2 EP1897830A2 (en) 2008-03-12
EP1897830A3 EP1897830A3 (en) 2009-01-14
EP1897830B1 true EP1897830B1 (en) 2010-03-10

Family

ID=38754756

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07114653A Active EP1897830B1 (en) 2006-09-08 2007-08-21 Device for connecting a first web with a second web

Country Status (4)

Country Link
EP (1) EP1897830B1 (en)
AT (1) ATE460373T1 (en)
DE (2) DE102006042217B4 (en)
ES (1) ES2338599T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10899568B2 (en) 2016-09-19 2021-01-26 New Era Converting Machinery, Inc. Automatic lapless butt material splice

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008033736A1 (en) 2008-07-18 2010-01-21 Windmöller & Hölscher Kg Device and method for winding and / or unwinding webs of material
DE102008050813B4 (en) * 2008-10-08 2020-08-20 Manroland Goss Web Systems Gmbh Device for rotating a roll of material web
DE102010042520B4 (en) * 2010-10-15 2014-07-31 Koenig & Bauer Aktiengesellschaft Method for connecting a first material web to a second material web
DE102012210792B3 (en) * 2012-06-26 2013-06-20 Koenig & Bauer Aktiengesellschaft Method for operating roller changer of web-fed printing press, involves providing measure for length changing of material web and measure for angle segment for determining outer diameter of roller in electronic circuit and/or computing unit

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Publication number Priority date Publication date Assignee Title
DE1172279B (en) * 1961-09-13 1964-06-18 Maschf Augsburg Nuernberg Ag Brush for a device on rotary printing machines for gluing a running paper web to a replacement roll
DE1966795C3 (en) * 1969-04-18 1979-04-12 J. Bobst & Fils S.A., Prilly, Waadt (Schweiz) Method for connecting two webs, in particular paper webs and device for carrying out the method
DE2619236B2 (en) * 1976-04-30 1981-04-02 Siemens AG, 1000 Berlin und 8000 München Method of controlling the on-the-fly connection of a web from a second winding roll to one of a first winding roll
JPS5931244A (en) * 1982-08-09 1984-02-20 Dainippon Printing Co Ltd Paper feeder with automatic paper connection
DE4000746C2 (en) 1990-01-12 1994-02-24 Roland Man Druckmasch Reel changer for a printing machine
US5253819A (en) * 1991-09-04 1993-10-19 Butler Automatic, Inc. Speed match splicing method and apparatus
DE4218825C2 (en) 1992-06-09 1995-02-23 Koenig & Bauer Ag Device for connecting two paper webs
DE19919759A1 (en) 1999-04-29 2000-11-02 Heidelberger Druckmasch Ag Device for feeding a continuous material to a printing press
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
DE502005010275D1 (en) * 2004-09-15 2010-10-28 Koenig & Bauer Ag METHOD FOR CARRYING OUT A FLYING ROLLER CHANGE

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10899568B2 (en) 2016-09-19 2021-01-26 New Era Converting Machinery, Inc. Automatic lapless butt material splice
US11767189B2 (en) 2016-09-19 2023-09-26 New Era Converting Machinery, Inc. Automatic lapless butt material splice

Also Published As

Publication number Publication date
EP1897830A2 (en) 2008-03-12
EP1897830A3 (en) 2009-01-14
DE102006042217A1 (en) 2008-03-27
DE102006042217B4 (en) 2011-07-14
DE502007003062D1 (en) 2010-04-22
ES2338599T3 (en) 2010-05-10
ATE460373T1 (en) 2010-03-15

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