EP2641858B1 - Device for influencing a moving web of material - Google Patents
Device for influencing a moving web of material Download PDFInfo
- Publication number
- EP2641858B1 EP2641858B1 EP13001397.2A EP13001397A EP2641858B1 EP 2641858 B1 EP2641858 B1 EP 2641858B1 EP 13001397 A EP13001397 A EP 13001397A EP 2641858 B1 EP2641858 B1 EP 2641858B1
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- EP
- European Patent Office
- Prior art keywords
- roller
- web
- actuators
- pivot axis
- material web
- 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.)
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- 239000000463 material Substances 0.000 title claims description 10
- 230000017105 transposition Effects 0.000 claims description 3
- 239000013598 vector Substances 0.000 description 17
- 230000037361 pathway Effects 0.000 description 7
- 238000005096 rolling process Methods 0.000 description 7
- 238000011144 upstream manufacturing Methods 0.000 description 3
- 230000001419 dependent effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
- B65H23/022—Registering, tensioning, smoothing or guiding webs transversely by tentering devices
- B65H23/025—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/048—Registering, tensioning, smoothing or guiding webs longitudinally by positively actuated movable bars or rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
- B65H23/032—Controlling transverse register of web
- B65H23/038—Controlling transverse register of web by rollers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/044—Sensing web tension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
- B65H26/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs
- B65H26/04—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs for variation in tension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/20—Location in space
- B65H2511/21—Angle
- B65H2511/216—Orientation, e.g. with respect to direction of movement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2511/00—Dimensions; Position; Numbers; Identification; Occurrences
- B65H2511/20—Location in space
- B65H2511/23—Coordinates, e.g. three dimensional coordinates
-
- 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
- B65H2557/24—Calculating methods; Mathematic models
-
- 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
- B65H2557/266—Calculating means; Controlling methods characterised by function other than PID for the transformation of input values to output values, e.g. mathematical
Definitions
- the invention relates to a device for influencing a running web according to the preamble of patent claim 1.
- a device is known. It has two rollers that deflect a web.
- the rollers are rotatably held in a common rotating frame. By rotating the roller relative to the web running direction, a transverse force directed axially toward the rollers is created which displaces the web.
- this device can be used, for example, to realize a web guiding.
- a suitable choice of the pivot axis relative to the web running direction and a tension compensation in the web across the web running direction can be realized.
- the choice of the position of the pivot axis of the rotary frame is of crucial importance for the control result.
- proposes this document proposes this document to use a segmented cut rolling bearing as the pivot axis. This device has proved very well in practice and forms the starting point of the present invention.
- a stripline with a pivoting roller is known.
- This pivoting roller is adjustable by means of two actuators which engage the same end of the roll.
- the pivoting roller is pivotally mounted in a bearing, so that the pivot axis is geometrically predetermined and in no way adjustable.
- a web tensioner known. This has a rotating frame which is pivotable about two different axes. These axes are orthogonal to each other, the position of the axes is fixed.
- the device according to claim 1 is used to influence a running web, it is basically irrelevant whether the device affects the web run, the web tension or both.
- the device has at least one adjustable roller, which deflects the web.
- the at least one roller is thus wrapped around the web at a certain angle. Only in this way can the at least one roller influence the web in any way.
- the at least one roller may have 2, 3, 4 or 5 degrees of freedom as required.
- no fixed pivot axis is more predetermined to the at least a roller is pivotable. So that the roller still occupies a defined position during operation, it is in operative connection with at least two actuators.
- the actuators must be arranged such that each of the degrees of freedom is associated with at least one of the actuators.
- the position of the roller is defined as a function of the individual actuators.
- the at least one roller is therefore no longer freely adjustable. This is important in order to achieve a defined reaction of the web to the adjustment of the at least one roller.
- the adjustment of the roller can be quite freely, so that in particular an imaginary pivot axis in a predetermined range is arbitrarily adjustable.
- the optimum position of the pivot axis of the at least one roller is about 2/3 of the feed length of the web.
- This inflow length depends not only on the actual installation situation but also on the selected operating mode of the upstream station. If, for example, the upstream station is able to remove the last roller seen from the web running direction in the web running direction, this will change the feed length of the downstream station. Due to the multidimensional adjustability of the at least one roller without a fixed pivot axis, this change can be taken into account by simply displacing the imaginary pivot axis. This requires in particular no change in the mechanics and therefore can be made during operation.
- linearly adjustable drives have been found. It does not matter if these actuators are hydraulically, pneumatically or electrically driven. It is only decisive that with them a distance between two points of the actuator is adjustable against corresponding force. Such actuators can be used without any problems combined in order to adjust the at least one roller in the different degrees of freedom.
- the actuators are to realize not only sliding but also pivoting movements, it is important that these corresponding pivoting movements do not block. This can be most easily realized in that both sides of the at least one actuator are held in linkages. A first linkage is located on one side of the actuator, while a second linkage on the second side of the actuator is connected to the at least one roller. It does not matter whether the first articulation on the machine frame fixed or, for example, by more Actuators is adjustable. The decisive factor is that only one side of the actuator engages the roller or its storage.
- a fundamental problem of the actuators is that the movement of the roller due to the actuator movement is relatively complex and therefore less comprehensible.
- the at least one roller carries out a defined pivoting movement about a predetermined pivoting angle and a predetermined, imaginary pivoting axis.
- the swivel angle is regularly specified by a controller.
- the position of the pivot axis and, where appropriate, their direction is adapted to the respective requirements.
- the " t " in the vector A is to be understood as a transposition rule.
- the vectors A and B are basically column vectors. The transposition results in a row vector, which then multiplied by the following modified rotation matrix yields a column vector. This column vector then becomes scalar with the vector B multiplied.
- the device corrects the web run of a web
- the two degrees of freedom of the at least one roll in the direction of the bisecting line between the web feed and the web run can be blocked by a corresponding guide.
- the functionality of the device is not affected thereby.
- the web tension is to be influenced transversely to the web running direction
- degrees of freedom in the web running direction are meaningless and can be blocked by corresponding guides. This considerably reduces the number of required actuators. In parallel, the effort to control the entire device is reduced.
- the at least one roller is in operative connection with at least one fabric web controller.
- This web control can regulate any properties of the web by pivoting the at least one roller. If the at least one roller has sufficiently many degrees of freedom, it is also possible to influence several web regulators, which regulate the web run on the one hand and the web tension, on the other hand. These web guiders then act on differently directed pivot axes of the at least one roller.
- the use of at least one roller, for example, as a combined web and web tension control roller is possible.
- the pivot axis for both pivoting directions can be chosen individually freely. However, it is also possible to couple both pivot axes, which facilitates the setting.
- the device has at least one web edge sensor. This detects the position of a web edge of the web. This makes it possible to adjust the position of the web edge by the at least one roller pivots about the imaginary pivot axis.
- the pivot axis can be set arbitrarily according to the requirements.
- the device has at least two force sensors which detect the tension difference of the web across its width. By pivoting the at least one roller then this clamping force difference can be compensated.
- the FIG. 1 shows a spatial representation of a device 1 for influencing a web 2.
- the web 2 has a running direction 3 and is deflected by at least one roller 4.
- the rear of the two rollers 4 is mandatory, while the front, dashed line drawn roller 4 is only optional.
- a single roller 4 may be sufficient, so that the roller 4 shown in broken lines may also be omitted.
- the two rollers 4 are rotatably supported end in rolling bearings 5. It does not matter if the rollers 4 are freely rotatable or driven by a motor. This choice depends essentially on the friction losses of the web 2 during deflection around the roller 4.
- rollers 6 are held on other roller bearings, which are guided rolling on a guide 7.
- the rollers 6 can also be supported on the rolling bearings 5, which leads in particular to a reduced bearing load.
- the rollers 6 and sliding shoes can be mounted directly on the rolling bearings 5, which slide along the guide 7. If the web 2 as shown in the FIG. 1 supplied from below the device 1 and led away from the bottom of this, so exerts the tensile force of the web 2 exclusively a downward force component on the rollers 4 off. In this case, it is quite sufficient to provide a corresponding guide 7 only below the rollers 6 or the alternative sliding shoes. In particular, even if alternative courses are to be allowed, it may be necessary to make the guide 7 double-sided, so that the rollers 6 engage in a corresponding free space of the guide 7 provided on the upper and lower sides of the rollers 6.
- the rollers 4 of the device 1 are adjustable. The adjustment of the rollers 4 takes place in such a way that a web edge 9 is held in a predetermined desired position.
- the device 1 has a web edge sensor 10, which detects the position of the web edge 9 permanently or cylindrically and via a signal path 11 an actual input 12 of a fabric web controller 13 supplies.
- the web control 13 preferably has a P, PI or PID behavior.
- the web control 13 also has a desired input 14 which is in operative connection with a setpoint generator 15.
- the web control 13 In order to form a closed loop, the web control 13 must be in operative connection with the rollers 4 stand that the output signal of the web regulator 13 causes an adjustment of the roller 4. It is known to connect web control directly with an actuator which pivots the roller 4. In this case, however, the roller 4 would have to have a fixed pivot axis, which considerably limits the applicability of the device 1.
- the roller 4 is not only pivotable, but also a pivot axis 16 is also variably adjustable, the roller 4 by three degrees of freedom - two translational and a pivoting degree of freedom - adjustable.
- the roller 4 engages three actuators 17, which are formed for example in the form of hydraulic cylinders, pneumatic cylinders or electric actuators. These actuators 17 each have a first articulation 18 and a second articulation 19.
- the first linkage 18 is fixedly formed to a machine frame, not shown, and is therefore independent of the position of the actuator 17 in its position.
- the second linkage 19 is connected to the rolling bearings 5 of the roller 4 and thus in their position on the Aktor ein dependent , By adjusting the actuators 17, the distance of the first link 18 from the second linkage 19, whereby the roller bearing 5 of the roller 4 changes accordingly.
- a displacement sensor 20 is also provided, which detects the respective position of the actuator 17 and outputs via a signal path 21.
- Each actuator 17 is associated with an arithmetic circuit 22.
- This arithmetic circuit 22 is connected via a signal path 23 with a value transmitter-X 24 in operative connection, which specifies the X-coordinate of the pivot axis 16 adjustable.
- the arithmetic circuit 22 is operatively connected to a value transmitter Y 26 which predefines the Y coordinate of the pivot axis 16.
- the arithmetic circuit 22 receives the output signal of the web guider 13.
- the signal paths 23, 25 and 27 are identical for all arithmetic circuits 22, so that they are connected to one another according to a parallel connection.
- the signal path 21 transmits the current position of the respective actuator 17 and is individual for each of the computing circuits 22.
- the computing circuits 22 each have an output 28 which is connected to a respective one of the actuators 17 via a respective signal path 29.
- the control of the individual actuators 17 is independently calculated according to the specifications of the web guider 13 and the value transmitter X 24 and the value transmitter Y 26.
- FIG. 2 shows the device 1 according to FIG. 1 in an adjusted position of the rollers 4.
- the pivot axis 16 was used as a virtual axis, which is defined by any mechanics in their position.
- the pivoting of the roller 4 about the pivot axis 16 is effected only by appropriately coordinated control of the actuators 17th
- FIG. 3 shows an alternative embodiment of the device 1 according to FIG. 1 , wherein like reference numerals designate like parts.
- force sensors 30 are provided in the rolling bearings 5, which measure the bearing force of the roller 4. Both force sensors 30 are operatively connected to a differential amplifier 31, which calculates the difference of the bearing forces at both roll ends and feeds the actual input 12 of the material web regulator 13.
- the device 1 operates as a tension compensation device to compensate for stresses of the web 2, which form transversely to its direction of travel 3.
- the web run of the web 2 is chosen so that it has the largest possible change in length when adjusting the roller 4. This is achieved by the web comes from the horizontal direction, is deflected by 180 ° and discharged in the horizontal direction again.
- a roller 4 is sufficient for clamping force control.
- the computing circuits 22 are constructed to be equal to each other and are exemplified using the schematic diagram according to FIG. 4 explained.
- the same reference numerals mean the same parts.
- the arithmetic circuit 22 receives a signal proportional to the X-coordinate of the imaginary pivot axis 16 via the signal path 23. Via the signal path 25, it receives a signal proportional to the Y coordinate of the pivot axis 16.
- the output signal of the web guider 13 indicates the required swivel angle of the rollers 4 again and the arithmetic circuit 22 via the Signal path 27 supplied.
- the arithmetic circuit 22 receives the signal of the position sensor 20 via the signal path 29.
- the arithmetic circuit 22 calculates an output signal which is supplied to the actuators 17 via the signal path 21.
- the arithmetic circuit 22 has four value transmitters 40-43 whose output signals represent the X and Y coordinates of the rest positions of the linkages 18, 19.
- the value transmitter 40 supplies the X-coordinate and the value transmitter 41 the Y-coordinate of the first linkage 18, which is fixedly provided within the scope of the device 1.
- the value transmitter 42 supplies the X coordinate and the value transmitter 43 the Y coordinate of the rest position of the second articulation 19, which is connected to the roller bearing 5 of the roller 4.
- the rest position is understood to be the undisplaced position of the roller 4, which is occupied by the at least one roller 4 when the signal on the signal path 27 is equal to zero. This will take the roller 4 only if no correction of the web run of the web 2 is required.
- Each of the value transmitters 40-43 is operatively connected to a non-inverting input of a differential amplifier 44-47.
- Inverting inputs of the differential amplifiers 44, 45 are connected via the signal path 23 with the value transmitter-X 24 for determining the X-coordinate of the pivot axis 16 in operative connection.
- inverting inputs of the differential amplifiers 46, 47 are in operative connection via the signal path 25 with the value transmitter Y 26 for determining the Y coordinate of the pivot axis 16.
- the differential amplifier 44 calculates with it the differential amplifier 44, the X-coordinate of the distance vector of the first articulation 18 from the pivot axis 16.
- the differential amplifier 45 determines the X coordinate of the distance vector of the second linkage 19 in the rest position of the roller 4 of the pivot axis 16.
- the differential amplifier 46, 47 compute the corresponding Y-coordinates of the two mentioned vectors.
- An angle signal which is supplied by the material path controller 13 via the signal path 27 of the arithmetic circuit 22, on the one hand to a cosine generator 48 and on the other hand, a sine wave generator 49 which calculates the cosine value or the sine value from the incoming signal via the signal path 27.
- the differential amplifiers 44, 46 which represent the X and Y coordinates of the first link 18, are operatively connected to multipliers 51-54 along with the outputs of the cosine generator 48 and sine generator 49. These multipliers 51-54 are connected so that each combination of output signals of the differential amplifiers 44, 46 on the one hand and cosine generator 48 and sine wave generator 49 on the other hand is multiplied. These multipliers 51-54 are on the output side with two summers 55, 56 in operative connection, the summer 55 is inverting and the summer 56 is not inverting.
- summers 55, 56 determine the X-coordinate and the Y-coordinate of the product of the distance vector of the first link 18 from the pivot axis 16 with a modified torque matrix in the form: - cos ⁇ sin ⁇ - sin ⁇ cos ⁇
- the said distance vector is to be regarded as a row vector and not as a column vector.
- multipliers 61-64 determine squares of the output signals of the differential amplifiers 44-47. Further multipliers 65, 66 determine a scalar product between the distance vector of the second linkage 19 from the pivot axis 16 and the vector which output signals of the adders 55, 56 represent.
- the output signals of all multipliers 61, 66 are then added in a summer 67 and supplied to an operational amplifier 68.
- This operational amplifier 68 is fed back via a squarer 69 so that it calculates the square root of the output signal of the summer 67 and outputs it to a signal path 70.
- the signal on the signal path 70 represents the required length of the associated actuator 17, ie the required distance of its first linkage 18 from the second linkage 19.
- An output signal of the operational amplifier 68 is supplied to a non-inverting input of a differential amplifier 80 whose inverting input is connected via the signal path 29 to the position sensor 20 of the actuator 17.
- the differential amplifier 80 calculates an actual setpoint value comparison and is on the output side with a servo drive 81 in operative connection.
- This servocontroller 81 preferably has a P, PI or PID behavior and ensures a position control of the actuator 17 so that it is independent of occurring forces takes a length as it is predetermined as a signal on the signal path 70.
- the described calculation circuit 22 is relatively complex and is usually implemented as a program of a microcontroller, which significantly reduces the circuitry complexity. However, the description of this calculation circuit 22 as an analog circuit facilitates understanding, since it can be done in particular programming language independent.
- Each of the three arithmetic circuits 22 is basically constructed identically, wherein additionally the signal paths 23, 25 and 27 of all arithmetic circuits 22 are interconnected and consequently have the same signals.
- the individual arithmetic circuits 22 differ only by the signal path 29, which is brought up individually by the associated position sensor 20, and by the settings of the value transmitters 40-43. On the output side, each arithmetic circuit 22 is individually connected to a selected actuator 17.
Landscapes
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Description
Die Erfindung betrifft eine Vorrichtung zum Beeinflussen einer laufenden Warenbahn gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a device for influencing a running web according to the preamble of
Aus der
Aus der
Aus der
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Aus der
Diese Aufgabe wird erfindungsgemäß mit den Merkmalen des Patentanspruchs 1 gelöst.
Die Vorrichtung gemäß Anspruch 1 dient zum Beeinflussen einer laufenden Warenbahn, wobei es grundsätzlich unerheblich ist, ob die Vorrichtung den Bahnlauf, die Bahnspannung oder beides beeinflusst. In jedem Fall weist die Vorrichtung mindestens eine verstellbare Walze auf, welche die Warenbahn umlenkt. Die mindestens eine Walze wird demnach um einen bestimmten Winkel von der Warenbahn umschlungen. Nur auf diese Weise kann die mindestens eine Walze die Warenbahn in irgendeiner Weise beeinflussen.
Um die Bahnlaufeigenschaften der Warenbahn zu verbessern, wird erfindungsgemäß vorgeschlagen, die mindestens eine Walze um mindestens zwei Freiheitsgrade verstellbar auszubilden. Die mindestens eine Walze kann je nach Anforderung 2, 3, 4 oder 5 Freiheitsgrade haben. Damit ist keine feste Schwenkachse mehr vorgegeben, um die die mindestens eine Walze verschwenkbar ist. Damit die Walze dennoch im Betrieb eine definierte Lage einnimmt, steht sie mit mindestens zwei Aktoren in Wirkverbindung. Die Aktoren müssen dabei derart angeordnet sein, dass jedem der Freiheitsgrade mindestens einer der Aktoren zugeordnet ist. Damit ist die Lage der Walze als Funktion der einzelnen Aktoren definiert. Die mindestens eine Walze ist demnach nicht mehr frei verstellbar. Dies ist wichtig, um eine definierte Reaktion der Warenbahn auf die Verstellung der mindestens einen Walze zu erzielen. Durch diese Maßnahme kann die Verstellung der Walze recht freizügig erfolgen, so dass insbesondere eine imaginäre Schwenkachse in einem vorgegebenen Bereich beliebig verstellbar ist. Bei asymmetrischer Bahnführung ist es beispielsweise zweckmäßig, die Schwenkachse nicht walzenmittig sondern bahnmittig anzuordnen. Diese Maßnahme reduziert bei einer gewünschten Bahnlaufbeeinflussung Nebenwirkungen in Bezug auf die Bahnspannung. Es hat sich außerdem herausgestellt, dass die optimale Lage der Schwenkachse der mindestens einen Walze bei etwa 2/3 der Zulauflänge der Warenbahn liegt. Diese Zulauflänge hängt nicht nur von der konkreten Einbausituation sondern auch von der gewählten Betriebsart der vorgeordneten Station ab. Ist die vorgeordnete Station beispielsweise in der Lage, die in Bahnlaufrichtung gesehen letzte Walze aus dem Bahnlauf zu entfernen, so wird hierdurch die Zulauflänge der nachgeordneten Station verändert. Durch die mehrdimensionale Verstellbarkeit der mindestens einen Walze ohne feste Schwenkachse kann dieser Veränderung Rechnung getragen werden, indem die imaginäre Schwenkachse einfach versetzt wird. Dies erfordert insbesondere keine Änderung in der Mechanik und kann daher im laufenden Betrieb vorgenommen werden. Es gibt auch Anwendungsfälle, in denen eine Bahnlaufregeleinrichtung je nach Warenbahnart einmal in Vorwärtsrichtung und einmal in Rückwärtsrichtung durchlaufen wird. Dabei ist in der Regel ein Umdrehen der Bahnlaufregeleinrichtung nicht realisierbar. Durch die variable Schwenkachse kann die Vorrichtung zum Beeinflussen der laufenden Warenbahn in diesem Fall problemlos an die veränderte Durchlaufrichtung angepasst werden, ohne dass mechanische Änderungen erforderlich sind.From the
This object is achieved with the features of
The device according to
In order to improve the web running properties of the web, it is proposed according to the invention to make the at least one roll adjustable by at least two degrees of freedom. The at least one roller may have 2, 3, 4 or 5 degrees of freedom as required. Thus, no fixed pivot axis is more predetermined to the at least a roller is pivotable. So that the roller still occupies a defined position during operation, it is in operative connection with at least two actuators. The actuators must be arranged such that each of the degrees of freedom is associated with at least one of the actuators. Thus, the position of the roller is defined as a function of the individual actuators. The at least one roller is therefore no longer freely adjustable. This is important in order to achieve a defined reaction of the web to the adjustment of the at least one roller. By this measure, the adjustment of the roller can be quite freely, so that in particular an imaginary pivot axis in a predetermined range is arbitrarily adjustable. In the case of an asymmetric web guide, it is expedient, for example, not to arrange the pivot axis in the center of the roll but in the middle of the web. This measure reduces side effects in terms of web tension with a desired web run influencing. It has also been found that the optimum position of the pivot axis of the at least one roller is about 2/3 of the feed length of the web. This inflow length depends not only on the actual installation situation but also on the selected operating mode of the upstream station. If, for example, the upstream station is able to remove the last roller seen from the web running direction in the web running direction, this will change the feed length of the downstream station. Due to the multidimensional adjustability of the at least one roller without a fixed pivot axis, this change can be taken into account by simply displacing the imaginary pivot axis. This requires in particular no change in the mechanics and therefore can be made during operation. There are also applications in which a web guiding device is traversed once in the forward direction and once in the backward direction, depending on the web type. In this case, reversing the web guiding device is generally not feasible. Due to the variable pivot axis, the device for influencing the running web in this case can be easily adapted to the changed passage direction without mechanical changes are required.
Am geeignetsten haben sich linear verstellbare Antriebe herausgestellt. Es spielt dabei keine Rolle, ob diese Aktoren hydraulisch, pneumatisch oder elektrisch angetrieben sind. Entscheidend ist lediglich, dass mit ihnen ein Abstand zweier Punkte des Aktors auch gegen entsprechende Kraftwirkung verstellbar ist. Derartige Aktoren lassen sich problemlos kombiniert einsetzen, um die mindestens eine Walze in die unterschiedlichen Freiheitsgrade zu verstellen.The most suitable linearly adjustable drives have been found. It does not matter if these actuators are hydraulically, pneumatically or electrically driven. It is only decisive that with them a distance between two points of the actuator is adjustable against corresponding force. Such actuators can be used without any problems combined in order to adjust the at least one roller in the different degrees of freedom.
Da die Aktoren neben Schiebe- auch Schwenkbewegungen realisieren sollen, ist es wichtig, dass diese entsprechenden Schwenkbewegungen nicht blockieren. Dies lässt sich am einfachsten dadurch realisieren, dass beide Seiten des mindestens einen Aktors in Anlenkungen gehalten sind. Eine erste Anlenkung befindet sich dabei auf einer Seite des Aktors, während eine zweite Anlenkung an der zweiten Seite des Aktors mit der mindestens einen Walze verbunden ist. Es spielt dabei keine Rolle, ob die erste Anlenkung am Maschinenrahmen fest oder beispielsweise durch weitere Aktoren verstellbar ist. Entscheidend ist lediglich, dass nur eine Seite des Aktors an der Walze bzw. deren Lagerung eingreift.Since the actuators are to realize not only sliding but also pivoting movements, it is important that these corresponding pivoting movements do not block. This can be most easily realized in that both sides of the at least one actuator are held in linkages. A first linkage is located on one side of the actuator, while a second linkage on the second side of the actuator is connected to the at least one roller. It does not matter whether the first articulation on the machine frame fixed or, for example, by more Actuators is adjustable. The decisive factor is that only one side of the actuator engages the roller or its storage.
Ein grundsätzliches Problem der Aktoren ist allerdings, dass die Bewegung der Walze aufgrund der Aktorbewegung relativ komplex und damit wenig nachvollziehbar ist. In der Regel möchte man erreichen, dass die mindestens eine Walze eine definierte Schwenkbewegung um einen vorgegebenen Schwenkwinkel und eine vorgegebene, imaginäre Schwenkachse ausführt. Der Schwenkwinkel wird dabei regelmäßig von einem Regler vorgegeben. Die Lage der Schwenkachse sowie gegebenenfalls deren Richtung wird allerdings den jeweiligen Erfordernissen angepasst. Um dies bei einfacher Bedienbarkeit der Vorrichtung zu erreichen, wird vorgeschlagen, mindestens einen der Aktoren mit mindestens einer Rechenschaltung zu verbinden. Diese Rechenschaltung berechnet aus dem relativen vektoriellen Abstand
Dabei ist zu berücksichtigen, dass die Lage der zweiten Anlenkung zwar grundsätzlich vom Schwenkwinkel der mindestens einen Walze abhängt, die obige Formel ist jedoch dahingehend zu verstehen, dass die Lage der zweiten Anlenkung für die unverschwenkte Walze (α=0) einzusetzen ist. Demnach hängen die Vektoren
Berücksichtigt man die Rotationssymmetrie der mindestens einen Walze so hat diese 5 mögliche Freiheitsgrade. Ohne weitere Maßnahmen wären daher mindestens 5 Aktoren erforderlich, um diese Walze in einer definierten Lage zu halten. Dies macht die Vorrichtung aufwendig, teuer und gleichzeitig störanfällig. In der Regel wird jedoch eine Verstellbarkeit der Walze um alle 5 möglichen Freiheitsgrade gar nicht benötigt. Zur Vereinfachung der Vorrichtung ist es daher gemäß Anspruch 2 vorteilhaft, wenn die mindestens eine Walze in mindestens einer Führung gehalten ist. Diese Führung schränkt einen oder mehrere Freiheitsgrade der mindestens einen Walze ein, ohne dass hierfür ein zusätzlicher Aktor erforderlich wäre. Soll die Vorrichtung beispielsweise den Bahnlauf einer Warenbahn korrigieren, so können die beiden Freiheitsgrade der mindestens einen Walze in Richtung der Winkelhalbierenden zwischen dem Bahnzulauf und dem Bahnablauf durch eine entsprechende Führung blockiert werden. Die Funktionalität der Vorrichtung wird hierdurch nicht beeinträchtigt. Soll dagegen die Bahnspannung quer zur Bahnlaufrichtung beeinflusst werden, sind Freiheitsgrade in Bahnlaufrichtung bedeutungslos und können durch entsprechende Führungen blockiert werden. Damit reduziert sich die Anzahl der erforderlichen Aktoren erheblich. Parallel dazu reduziert sich auch der Aufwand zur Ansteuerung der gesamten Vorrichtung.Taking into account the rotational symmetry of the at least one roller so this has 5 possible degrees of freedom. Without further measures, therefore, at least 5 actuators would be required to keep this roller in a defined position. This makes the device consuming, expensive and at the same time prone to failure. In general, however, an adjustability of the roller to all 5 possible degrees of freedom is not needed. To simplify the device, it is therefore advantageous according to
Gemäß Anspruch 3 ist es günstig, wenn die mindestens eine Walze mit mindestens einem Warenbahnregler in Wirkverbindung steht. Dieser Warenbahnregler kann beliebige Eigenschaften der Warenbahn durch Verschwenken der mindestens einen Walze regeln. Besitzt die mindestens eine Walze hinreichend viele Freiheitsgrade, so ist auch eine Einflussnahme von mehreren Warenbahnreglern realisierbar, die beispielsweise zum einen den Bahnlauf und zum anderen die Bahnspannung regeln. Diese Warenbahnregler wirken dann auf unterschiedlich gerichtete Schwenkachsen der mindestens einen Walze. Damit ist der Einsatz der mindestens einen Walze beispielsweise als kombinierte Bahnlauf-und Bahnspannungs-Regelwalze möglich. Grundsätzlich kann dabei die Schwenkachse für beide Verschwenkrichtungen individuell frei gewählt werden. Es ist jedoch auch möglich, beide Schwenkachsen zu koppeln, was die Einstellung erleichtert.According to
Gemäß Anspruch 4 ist es günstig, wenn die Vorrichtung mindestens einen Bahnkantensensor aufweist. Dieser erfasst die Lage einer Bahnkante der Warenbahn. Damit ist es möglich, die Lage der Bahnkante auszuregeln, indem die mindestens eine Walze um die imaginäre Schwenkachse verschwenkt. Damit kann die Schwenkachse entsprechend den Erfordernissen beliebig eingestellt werden.According to
Alternativ oder zusätzlich ist es gemäß Anspruch 5 günstig, wenn die Vorrichtung mindestens zwei Kraftsensoren aufweist, die die Spannkraftdifferenz der Warenbahn über ihre Breite erfassen. Durch Verschwenken der mindestens einen Walze kann dann diese Spannkraftdifferenz ausgeregelt werden.Alternatively or additionally, it is favorable according to
Der Erfindungsgegenstand wird beispielhaft anhand der Zeichnung erläutert, ohne den Schutzumfang zu beschränken.The subject invention is exemplified with reference to the drawing, without limiting the scope.
Es zeigt:
Figur 1- eine Vorrichtung zum Beeinflussen einer laufenden Warenbahn in einer Ausgangsstellung einer Walze,
Figur 2- die
Vorrichtung gemäß Figur 1 in verschwenkter Lage der Walze, Figur 3- eine alternative Ausführungsform der Vorrichtung gemäß
Figur 1 und Figur 4- eine bevorzugte Ausführungsform einer Rechenschaltung zur Ansteuerung von Aktoren.
- FIG. 1
- a device for influencing a running web in a starting position of a roller,
- FIG. 2
- the device according to
FIG. 1 in a pivoted position of the roller, - FIG. 3
- an alternative embodiment of the device according to
FIG. 1 and - FIG. 4
- a preferred embodiment of an arithmetic circuit for controlling actuators.
Die
Die beiden Walzen 4 sind endseitig in Wälzlagern 5 drehbar abgestützt. Es spielt dabei keine Rolle, ob die Walzen 4 frei drehbar oder motorisch angetrieben sind. Diese Wahl hängt im Wesentlichen von den Reibungsverlusten der Warenbahn 2 beim Umlenken um die Walze 4 ab.The two
An den Walzen 4 sind über weitere Wälzlager Rollen 6 gehalten, die rollend an einer Führung 7 geführt sind. Grundsätzlich können die Rollen 6 auch an den Wälzlagern 5 abgestützt sein, was insbesondere zu einer verringerten Lagerbelastung führt. Außerdem können statt der Rollen 6 auch Gleitschuhe unmittelbar an den Wälzlagern 5 angebracht sein, die entlang der Führung 7 gleiten. Wird die Warenbahn 2 entsprechend der Darstellung in der
Die Warenbahn 2 bewegt sich zwar grundsätzlich in Richtung der Laufrichtung 3, bedingt durch äußere Einflüsse oder Ungenauigkeiten in den Ausrichtungen von Walzen in vorgeordneten Bearbeitungsvorrichtungen entsteht jedoch auch ein geringfügiger Querverlauf 8 der Warenbahn 2. Ohne weitere Maßnahmen würde die Warenbahn 2 über die Walzenenden hinaus verschoben werden, was eine weitere Bearbeitung der Warenbahn 2 unmöglich machte. Zu diesem Zweck sind die Walzen 4 der Vorrichtung 1 verstellbar ausgebildet. Die Verstellung der Walzen 4 erfolgt dabei derart, dass eine Bahnkante 9 in einer vorgegebenen Solllage gehalten wird. Zu diesem Zweck weist die Vorrichtung 1 einen Bahnkantensensor 10 auf, der die Lage der Bahnkante 9 permanent oder zylindrisch erfasst und über einen Signalweg 11 einem Ist-Eingang 12 eines Warenbahnreglers 13 zuführt. Der Warenbahnregler 13 hat vorzugsweise ein P-, PI- oder PID-Verhalten. Der Warenbahnregler 13 besitzt außerdem einen Soll-Eingang 14, der mit einem Sollwertgeber 15 in Wirkverbindung steht.Although the
Um eine geschlossene Regelschleife zu bilden, muss der Warenbahnregler 13 mit den Walzen 4 derart in Wirkverbindung stehen, dass das Ausgangssignal des Warenbahnreglers 13 eine Verstellung der Walze 4 hervorruft. Es ist bekannt, Warenbahnregler unmittelbar mit einem Aktor zu verbinden, der die Walze 4 verschwenkt. In diesem Fall müsste jedoch die Walze 4 eine feste Schwenkachse aufweisen, was die Anwendbarkeit der Vorrichtung 1 erheblich einschränkt.In order to form a closed loop, the
Um zu erreichen, dass die Walze 4 nicht nur verschwenkbar ist, sondern eine Schwenkachse 16 auch noch variabel einstellbar ist, ist die Walze 4 um drei Freiheitsgrade - zwei translatorische und einen Schwenkfreiheitsgrad - verstellbar. An der Walze 4 greifen drei Aktoren 17 an, die beispielsweise in Form von Hydraulikzylindern, Pneumatikzylindern oder elektrischen Stellantrieben ausgebildet sind. Diese Aktoren 17 weisen jeweils eine erste Anlenkung 18 und eine zweite Anlenkung 19 auf. Die erste Anlenkung 18 ist dabei fest zu einem nicht dargestellten Maschinenrahmen ausgebildet und ist daher in ihrer Lage unabhängig von der Stellung des Aktors 17. Die zweite Anlenkung 19 ist dagegen mit den Wälzlagern 5 der Walze 4 verbunden und damit in ihrer Lage von der Aktorstellung abhängig. Durch Verstellen der Aktoren 17 ändert sich der Abstand der ersten Anlenkung 18 von der zweiten Anlenkung 19, wodurch sich das Wälzlager 5 der Walze 4 entsprechend verstellt.In order to achieve that the
An jedem Aktor 17 ist außerdem ein Weggeber 20 vorgesehen, der die jeweilige Stellung des Aktors 17 erfasst und über einen Signalweg 21 ausgibt.At each
Jedem Aktor 17 ist eine Rechenschaltung 22 zugeordnet. Diese Rechenschaltung 22 steht über einen Signalweg 23 mit einem Wertgeber-X 24 in Wirkverbindung, der die X-Koordinate der Schwenkachse 16 einstellbar vorgibt. Über einen weiteren Signalweg 25 steht die Rechenschaltung 22 mit einem Wertgeber-Y 26 in Wirkverbindung, der die Y-Koordinate der Schwenkachse 16 vorgibt. Über einen weiteren Signalweg 27 erhält die Rechenschaltung 22 das Ausgangssignal des Warenbahnreglers 13. Die Signalwege 23, 25 und 27 sind für alle Rechenschaltungen 22 identisch, so dass diese entsprechend einer Parallelschaltung miteinander verbunden sind. Der Signalweg 21 übermittelt dagegen die momentane Lage des jeweiligen Aktors 17 und ist für jede der Rechenschaltungen 22 individuell. Die Rechenschaltungen 22 besitzen jeweils einen Ausgang 28 der über jeweils einen Signalweg 29 mit jeweils einem der Aktoren 17 verbunden ist. Damit wird die Ansteuerung der einzelnen Aktoren 17 unabhängig voneinander entsprechend den Vorgaben des Warenbahnreglers 13 und des Wertgebers-X 24 sowie des Wertgebers-Y 26 berechnet.Each
Die
Es wird darauf hingewiesen, dass die Anwendung der Vorrichtung 1 zur Regelung der Bahnkante 9 der Warenbahn 2 lediglich beispielhaft zu verstehen ist. Grundsätzlich kann die Vorrichtung 1 die Warenbahn 2 in beliebiger Weise beeinflussen, sofern dies durch eine Verstellung von wenigstens einer der Walzen 4 möglich ist. Die
Die Rechenschaltungen 22 sind zueinander gleich aufgebaut und werden beispielhaft anhand des Prinzipschaltplanes gemäß
Die Rechenschaltung 22 weist vier Wertgeber 40-43 auf, deren Ausgangssignal die X- und Y-Koordinaten der Ruhelagen der Anlenkungen 18, 19 repräsentieren. Dabei liefert der Wertgeber 40 die X-Koordinate und der Wertgeber 41 die Y-Koordinate der ersten Anlenkung 18, die fest im Rahmen der Vorrichtung 1 vorgesehen ist. Der Wertgeber 42 liefert dagegen die X-Koordinate und der Wertgeber 43 die Y-Koordinate der Ruhelage der zweiten Anlenkung 19, welche mit dem Wälzlager 5 der Walze 4 verbunden ist. Als Ruhelage ist dabei die unverschwenkte Lage der Walze 4 zu verstehen, die von der mindestens einen Walze 4 eingenommen wird, wenn das Signal am Signalweg 27 gleich null ist. Diese wird die Walze 4 nur dann einnehmen, wenn keine Korrektur des Bahnlaufs der Warenbahn 2 erforderlich ist.The
Jeder der Wertgeber 40-43 steht mit einem nicht invertierenden Eingang eines Differenzverstärkers 44-47 in Wirkverbindung. Invertierende Eingänge der Differenzverstärker 44, 45 stehen über den Signalweg 23 mit dem Wertgeber-X 24 zur Bestimmung der X-Koordinate der Schwenkachse 16 in Wirkverbindung. Invertierende Eingänge der Differenzverstärker 46, 47 stehen dagegen über den Signalweg 25 mit dem Wertgeber-Y 26 zur Bestimmung der Y-Koordinate der Schwenkachse 16 in Wirkverbindung. Damit berechnet der Differenzverstärker 44 die X-Koordinate des Abstandsvektors der ersten Anlenkung 18 von der Schwenkachse 16. Der Differenzverstärker 45 ermittelt dagegen die X-Koordinate des Abstandsvektors der zweiten Anlenkung 19 in der Ruhelage der Walze 4 von der Schwenkachse 16. Die Differenzverstärker 46, 47 berechnen die entsprechenden Y-Koordinaten der beiden genannten Vektoren. Ein Winkelsignal, welches vom Warenbahnregler 13 über den Signalweg 27 der Rechenschaltung 22 zugeführt wird, wird einerseits einem Cosinusgenerator 48 und andererseits einem Sinusgenerator 49 zugeführt, die aus dem über den Signalweg 27 ankommenden Signal den Cosinus-Wert bzw. den Sinus-Wert berechnen.Each of the value transmitters 40-43 is operatively connected to a non-inverting input of a differential amplifier 44-47. Inverting inputs of the
Die Differenzverstärker 44, 46, welche die X- und Y-Koordinate der ersten Anlenkung 18 repräsentieren, stehen zusammen mit den Ausgangssignalen des Cosinusgenerators 48 und Sinusgenerators 49 mit Multiplizierern 51-54 in Wirkverbindung. Diese Multiplizierer 51-54 sind dabei so verschaltet, dass jede Kombination von Ausgangssignalen der Differenzverstärker 44, 46 einerseits und Cosinusgenerator 48 und Sinusgenerator 49 andererseits multipliziert wird. Diese Multiplizierer 51-54 stehen ausgangsseitig mit zwei Summierern 55, 56 in Wirkverbindung, wobei der Summierer 55 invertierend und der Summierer 56 nicht invertierend ist. Diese Summierer 55, 56 ermitteln die X-Koordinate und die Y-Koordinate des Produkts des Abstandsvektors der ersten Anlenkung 18 von der Schwenkachse 16 mit einer modifizierten Drehmatrix in der Form:
Dabei ist der genannte Abstandsvektor als Zeilenvektor aufzufassen und nicht als Spaltenvektor.In this case, the said distance vector is to be regarded as a row vector and not as a column vector.
In einer folgenden Stufe 60 ermitteln Multiplizierer 61-64 Quadrate der Ausgangssignale der Differenzverstärker 44-47. Weitere Multiplizierer 65, 66 ermitteln ein Skalarprodukt zwischen dem Abstandsvektor der zweiten Anlenkung 19 von der Schwenkachse 16 und dem Vektor, den Ausgangssignale der Summierer 55, 56 repräsentieren.In a
Die Ausgangssignale aller Multiplizierer 61, 66 werden anschließend in einem Summierer 67 addiert und einem Operationsverstärker 68 zugeführt. Dieser Operationsverstärker 68 ist über einen Quadrierer 69 rückgekoppelt, so dass er die Quadratwurzel des Ausgangssignales des Summierers 67 berechnet und an einen Signalweg 70 ausgibt. Das Signal am Signalweg 70 repräsentiert dabei die geforderte Länge des zugeordneten Aktors 17, also den geforderten Abstand seiner ersten Anlenkung 18 von der zweiten Anlenkung 19.The output signals of all
Ein Ausgangssignal des Operationsverstärkers 68 wird einem nicht invertierenden Eingang eines Differenzverstärkers 80 zugeführt, dessen invertierender Eingang über den Signalweg 29 mit dem Weggeber 20 des Aktors 17 verbunden ist. Der Differenzverstärker 80 berechnet einen Ist-SollWertvergleich und steht ausgangsseitig mit einem Servoregler 81 in Wirkverbindung. Dieser Servoregler 81 hat vorzugsweise ein P-, PI- oder PID-Verhalten und sorgt für eine Lageregelung des Aktors 17, so dass dieser unabhängig von auftretenden Kräften eine Länge einnimmt, wie sie als Signal auf dem Signalweg 70 vorgegeben ist.An output signal of the
Die beschriebene Rechenschaltung 22 ist relativ komplex und wird in der Regel als Programm eines Mikrokontrollers realisiert, was den schaltungstechnischen Aufwand erheblich reduziert. Die Beschreibung dieser Rechenschaltung 22 als Analogschaltung erleichtert jedoch das Verständnis, da sie insbesondere programmiersprachenunabhängig erfolgen kann. Jede der drei Rechenschaltungen 22 ist grundsätzlich identisch aufgebaut, wobei zusätzlich die Signalwege 23, 25 und 27 aller Rechenschaltungen 22 miteinander verbunden sind und folglich gleiche Signale aufweisen. Die einzelnen Rechenschaltungen 22 unterscheiden sich nur durch den individuell vom zugeordneten Weggeber 20 herangeführten Signalweg 29 und durch die Einstellungen der Wertgeber 40-43. Ausgangsseitig ist jede Rechenschaltung 22 individuell mit einem ausgewählten Aktor 17 verbunden.The described
Durch diese Rechenschaltungen 22 ist es möglich, jeden Aktor 17 individuell derart anzusteuern, dass die Walze 4 einen vom Warenbahnregler 13 vorgegebenen Schwenkwinkel einnimmt, wobei die Lage der Schwenkachse 16 durch die Wertgeber-X 24 und Wertgeber-Y 26 beliebig vorgebbar ist. Die Lage der Schwenkachse 16 kann dabei auch während des laufenden Regelbetriebes verändert werden.
Claims (5)
- Apparatus for influencing a running material web (2), wherein the apparatus (1) has at least one adjustable roller (4), which deflects the material web (2), wherein the at least one roller (4) is adjustable by at least two degrees of freedom, and the at least one roller (4) is operatively connected to at least two actuators (17) such that at least one of the actuators (17) is assigned to each of the degrees of freedom, wherein at least one of the actuators (17) is a linearly adjustable drive, and at least one of the actuators (17) is pivotably held with one side in a first pivot mounting (18) and with its other side in a second pivot mounting (19) connected to the at least one roller (4), characterized in that at least one of the actuators (17) is operatively connected to at least one computation circuit (22), which, from the relative, vectorial distance
A of the first pivot mounting (18) from a preset pivot axis (16), from the relative, vectorial distanceB of the second pivot mounting (19) from the preset pivot axis (16), and from a preset pivot angle α of the at least one roller (4), calculates an actuator length L as follows, wherein the "t" is to be understood as a transposition rule, wherein the vectorial distance of the second pivot mounting (19) from the pivot axis (16) should be used for the non-pivoted roller (4) (α=0°): - Apparatus according to Claim 1, characterized in that the at least one roller (4) is held in at least one guide (7).
- Apparatus according to at least one of Claims 1 to 2, characterized in that the apparatus (1) has at least one material web controller (13), which is operatively connected to the at least one roller (4).
- Apparatus according to Claim 3, characterized in that the apparatus (1) has at least one web edge sensor (10), which registers the position of a web edge (9) of the material web (2) and influences the at least one material web controller (13).
- Apparatus according to at least one of Claims 1 to 3, characterized in that the apparatus (1) has at least two force sensors (30), which register a tensioning force differential across the width of the material web (2) and influence the at least one material web controller (13).
Applications Claiming Priority (1)
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DE102012005439A DE102012005439A1 (en) | 2012-03-20 | 2012-03-20 | Device for influencing a running web |
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EP2641858A3 EP2641858A3 (en) | 2014-10-29 |
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JP (1) | JP5583235B2 (en) |
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2012
- 2012-03-20 DE DE102012005439A patent/DE102012005439A1/en not_active Withdrawn
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2013
- 2013-03-13 US US13/801,639 patent/US9821976B2/en active Active
- 2013-03-19 JP JP2013056688A patent/JP5583235B2/en active Active
- 2013-03-19 EP EP13001397.2A patent/EP2641858B1/en active Active
- 2013-03-19 KR KR1020130029423A patent/KR101403096B1/en active IP Right Grant
- 2013-03-20 TW TW102109841A patent/TWI473755B/en not_active IP Right Cessation
- 2013-03-20 CN CN201310089138.9A patent/CN103318676B/en active Active
Non-Patent Citations (1)
Title |
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None * |
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KR20130106791A (en) | 2013-09-30 |
EP2641858A2 (en) | 2013-09-25 |
DE102012005439A1 (en) | 2013-09-26 |
CN103318676B (en) | 2016-06-22 |
CN103318676A (en) | 2013-09-25 |
US9821976B2 (en) | 2017-11-21 |
TW201339077A (en) | 2013-10-01 |
TWI473755B (en) | 2015-02-21 |
JP5583235B2 (en) | 2014-09-03 |
EP2641858A3 (en) | 2014-10-29 |
KR101403096B1 (en) | 2014-06-03 |
JP2013193882A (en) | 2013-09-30 |
US20130248634A1 (en) | 2013-09-26 |
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