EP2734369B1 - Method for drawing at least one material web into a processing device - Google Patents

Description

The invention relates to a method for drawing at least one material web into a processing device according to the preamble of claim 1.

There are processing devices, such as rotary web presses known, the material webs, for example, process substrates, which are unwound from rolls of material, such as Bedruckstoffrollen. For this purpose, a leading end of the material web must first be pulled into the processing device. If necessary, retraction of the material web must take place independently of any preceding material web. For this purpose, there are Einziehhilfen, which may have, for example, Einziehketten along a guide system preferably motor driven pull the web and in particular its leading end along a transport path through the processing device. Usually, the leading end of the material web is connected to the pulling-in aid and then the pulling-in aid is moved along the transport path substantially along the transport path until the material web has been drawn into the processing device. The leading end of the material web can be connected, for example, at a leading end of a Einziehelements the Einziehhilfe and / or at a trailing end of the Einziehelements and / or between the leading and the trailing end of the Einziehelements with the Einziehelement.

By the generic DE 101 18 870 A1 Method for drawing at least one material web into a processing device is known, wherein at least one roll of material on which the at least one material web is at least partially wound is rotatably mounted about an axis of rotation and wherein in a joining process the at least one material web with at least one movable draw-in element at least one pulling aid is connected.

By the DE 10 2008 000 242 B3 It is known to rotate in the context of a standstill roller change a material roll to be replaced against a Abspulrichtung until a material web to be replaced is sufficiently tightened to cut through this web, with a tightening caused by the tightening of a partially wrapped by this web shuttle roller is detected.

By the DE 10 2006 037 189 A1 and the DE 101 46 631 A1 In each case, a roller change method is known, which is insofar suitable for drawing at least one material web into a processing device, as an already existing material web pulls a new, associated material web through the processing device.

By the DE 10 2008 044 496 A1 a method is known for drawing at least one material web into a processing device, wherein at least one roll of material on which the at least one material web is at least partially wound is rotatably mounted about a rotation axis and wherein in a joining process the at least one material web with at least one movable draw-in element at least a pulling aid is connected. After the material web has been drawn into the processing device, the at least one roll of material is rotated counter to an unwinding direction about the axis of rotation until a web tension of the at least one material web reaches a first predetermined value.

The invention has for its object to provide a method for drawing at least one material web in a processing device.

The object is achieved by the features of claim 1.

The advantages that can be achieved with the invention are, in particular, that damage to at least one material web and / or a coupling element and / or at least one draw-in element and / or connections between these can be avoided. This is preferably done by rotating at least one roll of material against a unwinding direction about a rotation axis after a joining operation until a web tension of the at least one material web reaches a first predetermined value, preferably nonzero. As a result, the web tension of the material web to be recovered can be constructed in a controlled manner. Thus, it is prevented that an unstressed material web is accelerated abruptly, which would be the case, for example, if not previously built-up tension, but a retraction would accelerate while the web is still sagging.

A further advantage is that, for setting a first predetermined value of the web tension, means can be used which can also be used in a running processing operation to control the web tension, for example at least one drive motor which drives the material roll and / or at least a sensor device, which is preferably designed as a roller and / or lever. As a result, no additional devices are necessary, but it is sufficient to instruct an operator accordingly or to program a machine control accordingly. In particular, the machine control is also preferably already programmed so that rotational movements of the at least one roll of material are used as a possibility for controlling the web tension. By contrast, the at least one pull-in element is preferably not usable in a processing operation, in particular a printing operation after a pulling-in process.

Another advantage consists in a far-reaching automation of the Einziehvorgangs.

A further advantage of at least one embodiment in which a preferred Coupling element is used, is that tensile forces are distributed as evenly as possible on the material web, in particular with respect to their width.

A further advantage of at least one embodiment is that the arrangement of the at least one pull-in element in a starting position ensures reproducible conditions and thus consistent quality of the pulling-in process.

A further advantage of at least one embodiment in which the material roll is preferably moved into a roll-off position after a connection between the material web and the draw-in element is that the joining of the material web to the at least one pull-in element is facilitated for geometrical reasons.

Another advantage of at least one embodiment in which preferably the at least one roll of material is again rotated during the alignment process and / or continues counter to the unwinding direction about the axis of rotation is that thereby a web tension can be maintained throughout.

A further advantage of at least one embodiment in which a path length covered by the at least one pull-in element is determined from signals from a rotary encoder is that different positions of the at least one pull-in element can be achieved in a targeted manner without a large number of position sensors being required. In particular, the at least one pulling-in element can thus also be arranged in the starting position.

Another advantage is that different long coupling elements for different types of material, such as paper types, can be used and that the method still does not need to be modified, because correspondingly only a larger angle of rotation of the roll of material opposite to the unwinding is achieved before the web tension the first reached predetermined value.

An embodiment of the invention is illustrated in the drawings and will be described in more detail below.

Fig. 1

eine schematische Darstellung einer Rollenabspulvorrichtung, wobei sich eine Materialrolle in einer Aufachslage und ein Einziehelement in einer Bereitschaftsposition befindet;

Fig. 2

eine schematische Darstellung der Rollenabspulvorrichtung aus Fig. 1, wobei sich die Materialrolle in der Aufachslage und das Einziehelement in einer Startposition befindet;

Fig. 3

eine schematische Darstellung der Rollenabspulvorrichtung aus Fig. 1, wobei sich die Materialrolle in einer Abrolllage befindet und sich das Einziehelement in der Startposition befindet.

Show it:

Fig. 1

a schematic representation of a Rollenabspulvorrichtung, wherein a roll of material in a Aufachslage and a Einziehelement is in a standby position;

Fig. 2

a schematic representation of the Rollenabspulvorrichtung from Fig. 1 , wherein the roll of material in the Aufachslage and the Einziehelement is in a start position;

Fig. 3

a schematic representation of the Rollenabspulvorrichtung from Fig. 1 , wherein the roll of material is in a roll-off position and the pull-in element is in the start position.

A processing device, which is preferably designed as a rotary web printing press, is at least one material web 01, for example a printing material web 01 and / or a paper web 01, capable of being processed and / or processed. The processing device has at least one Rollenabspulvorrichtung 02. The Rollenabspulvorrichtung 02 is formed for example as a roll changer 02. The Rollenabspulvorrichtung 02 has at least one axis of rotation 03, around which at least one roll of material 04, for example, a Bedruckstoffrolle 04 arranged rotatably and / or arranged and preferably stored and / or storable. If the Rollenabspulvorrichtung 02 is formed as a roll changer 02, it preferably has at least two storage locations for at least two rolls of material 04, which independently of each other by a respective axis of rotation 03; 06 rotatable and / or rotatable and together pivotable about a common pivot axis 07 and / or can be arranged.

Material rolls 04, which are preferably used in the Rollenabspulvorrichtung 02, preferably each have a sleeve on which the material web 01, in particular printing material 01 is wound for use in the processing device. In the Rollenabspulvorrichtung 02 is preferably at least one roll of material 04 arranged rotatably. In one embodiment, the Rollenabspulvorrichtung 02 is adapted to receive a roll of material 04, thus has only one storage space for a roll of material 04 on. In another embodiment, the Rollenabspulvorrichtung 02 is designed as a roll changer 02 and has storage spaces for at least two rolls of material 04 and preferably allows a flying role change. A flying roll change is a joining of a first material web 01 of a currently processed material roll 04 to a second material web 01 of a subsequently to be processed material roll 04, while both the currently processed material roll 04 and the material roll 04 to be subsequently processed rotate.

The Rollenabspulvorrichtung 02 preferably has per storage space at least one roller holding device 21, which is formed for example as a clamping device 21 and / or as a clamping device 21. The at least one roller holding device 21 serves for a rotatable attachment of the at least one material roll 04. The at least one roller holding device 21 is preferably in contact with the sleeve of the at least one roll of material 04. A clamping device 21 may, for example, be in the form of two clamping mandrels 21 or clamping cones 21, of which at least one is displaceable in the axial direction. The at least one clamping device 21 is preferably designed as two clamping mandrels 21 or clamping cones 21 or as a clamping shaft 21.

The at least one roller holding device 21 preferably has at least one first Drive motor and is preferably driven by this at least one or each a first drive motor to rotate and / or driven. The at least one first drive motor is preferably designed as at least one electric motor and more preferably as at least one position-controlled electric motor. Preferably, a drive control of the at least one first drive motor is provided. This drive control is designed for different modes of operation. In particular, the at least one first drive motor is preferably drivable in two mutually opposite directions. In particular, a roll of material 04 arranged in the roll-off device 02 can be driven in these two opposite directions. If the at least one material web 01 is unwound from the at least one material roll 04, the at least one material roll 04 rotates in the unwinding direction A. The at least one material web 01 has a leading end 31. The drive control of the at least one first drive motor is preferably linked to a machine control of the processing device and / or formed as part of this machine control.

The at least one roller holding device 21 and / or its at least one first drive motor is preferably connected via at least one support arm 08 to at least one common support 09 or support frame 09, with which all available storage locations are rotatably and / or pivotably arranged. As a result, the at least one roll of material 04 is at an attachment of the at least one roll of material 04 in the Rollenabspulvorrichtung 02 and / or removing a residual or residual role of the roll 04 from the Rollenabspulvorrichtung 02 and / or in a flying role change and / or in a running processing operation For example, printing operation with decreasing roll diameter with respect to a position of its axis of rotation 03; 06 and / or adaptable to its lateral surface. Preferably, the at least one first drive motor is connected to the roll of material 04 only via the corresponding roll holding device 21, and in particular preferably not via a strip a cylinder jacket surface of the roll of material 04 is connected.

Preferably, at least one pivot drive is a pivoting movement of the at least one common carrier 09 or support frame 09 relative to a frame 11 of the Rollenabspulvorrichtung 02 around the pivot axis 07 causing and / or arranged feasible. For receiving and / or dispensing a roll of material 04 by means of the Rollenabspulvorrichtung 02 and / or for a Einziehvorgang and / or for unwinding the at least one web 01 from the at least one roll of material 04, the respective support arms 08 and the at least one common carrier 09 or support frame 09 preferably in dependence on a diameter of the roll of material 04 manually or preferably automatically brought into at least one suitable pivot position. In manual mode, this is preferably done stepwise and under visual control by an operator. In automated operation, at least one sensor, for example an optical and / or acoustic and / or inductive sensor, for example a laser sensor and / or an ultrasonic sensor, which determines a diameter of the material roll 04 and forwards it to the machine control, which then transmits the respective support arms, is preferably arranged 08 and brings the at least one common carrier 09 or support frame 09 in a respective preferred pivotal position.

The at least one first drive motor is arranged pivotably together with the at least one common support 09 or support frame 09 and the respective support arm 08 about the pivot axis 07. This means that in the case of a pivoting movement of the at least one common carrier 09 or supporting frame 09, which is brought about, for example, by the pivoting drive, the at least one first drive motor is also pivoted. This leads to constant operating conditions for the at least one first drive motor. Preferably, at least one support arm 08 is movably arranged in the axial direction together with the first drive motor. More preferably, all support arms 08 are arranged movable together with optionally arranged respective drive motors in the axial direction. This allows one hand a simple Aufachsvorgang and on the other hand, a position adjustment already aufgeachster rolls of material 04 in the axial direction.

Thus, in the case of mandrels 21 or clamping mandrels 21 in each case at least one of the mandrels 21 or clamping mandrels 21 and are preferably both mandrels 21 or clamping mandrels 21 in and / or opposite to the axial direction movable. This axial direction is parallel to the axis of rotation 03; 06 of the roll of material 04 and optionally to the pivot axis 07 of the at least one common carrier 09 or support frame 09 of the Rollenabspulvorrichtung 02 arranged. The rotation axis 03; 06 of the roll of material 04 is in a aufgeachsten state of the roll of material 04 at the same time the axis of rotation 03; In the case of mandrels 21, the mandrels 21 preferably each have at least two preferably designed as clamping jaws driver elements on.

Regardless of whether the Rollenabspulvorrichtung 02 is formed in the first or second embodiment, the Rollenabspulvorrichtung 02 preferably further on the bearing on the at least one common carrier 09 or support frame 09 supporting frame 11. Preferably, the Rollenabspulvorrichtung 02 along a transport path of the at least one web 01 after the roller holding device 21 a preferably movable, preferably pivotable, more preferably arranged on a trained as a dancer lever 12 or pendulum lever 12 12 arranged, preferably as a dancer roller 13 or pendulum roller 13 formed roller 13 and or a Bahnkantenausrichter and / or a feed train 14 on. This roller 13 is preferably designed as a measuring roller 13. A web tension is preferably measurable and / or adjustable and / or can be kept within limits and / or the web tension is preferably measured and / or adjusted and / or kept within limits by means of the roller 13, which is preferably arranged deflectable on the lever 12. By means of this roller 13 are preferred in a processing plant, preferably a printing operation Optionally, the Rollenabspulvorrichtung 02 an adhesive and cutting device, by means of which preferably a role change flying, ie can go without stopping the web 01 vonstatten.

The Rollenabspulvorrichtung 02 has at least one Einziehhilfe 16, which supports a retraction of the at least one material web 01 along at least one transport path of the at least one material web 01. The at least one transport path of the at least one material web 01 optionally extends through parts of the reel-off device 02, and preferably through the processing device. Preferably, the at least one pull-in aid 16 has at least one pull-in element 17, which is preferably movably arranged and / or arrangeable along at least one pull-in path. The at least one pull-in element 17 is preferably designed as at least one pull-in chain 17. The at least one pull-in element 17 can, however, also be designed as at least one pull-in band 17 and / or as at least one pull-in cord 17. The at least one pulling-in element 17 is in particular no printing material web 01. Preferably, the at least one pulling-in element 17 is formed from at least one other material than the at least one material web 01. Preferably, the at least one pulling-in element 17 has a width which is less than one fifth and further preferably less than one tenth of a width of at least one material web 01 is. The width of the at least one material web 01 is a dimension of the at least one material web 01, which is both orthogonal to a largest and orthogonal to a smallest dimension of the at least one material web 01.

The at least one pull-in path preferably runs through the roller unwinding device 02 and / or the processing device such that the at least one material web 01 always has a minimum distance from the at least one pull-in path in a distance direction. The distance direction is parallel to the width of the at least one material web 01. The at least one Einziehweg is preferred determined by at least one guide 18, which is also part of the at least one Einziehhilfe 16. If the at least one pull-in element 17 is designed as at least one pull-in chain 17, the at least one guide 18 is preferably designed as a chain guide 18. At least one retraction drive 22 is preferred; 23, a movement of the at least one pull-in element 17 along the at least one pull-in path can be effected and / or effected. The at least one retraction drive 22; 23 is for example as an electric motor 22; 23, preferably a position-controlled electric motor 22; 23 trained. The at least one pull-in element 17 preferably has an end 32 leading with respect to the retraction and an end 33 trailing with respect to the retraction. Preferably, the at least one pull-in element 17 has at least one suspension point 34.

In a preferred embodiment of the at least one pull-in aid 16, which will be described in more detail below, a plurality of Einziehantrieben 22; 23 so preferably arranged stationarily that a preferably designed as Einziehkette 17 retraction 17 along the Einziehwegs always with at least one Einziehantrieb 22; 23 is in drive connection. A drive connection is a connection in which an at least partial movement of a Einziehantriebs 22; 23 causes a movement of the at least one pull-in element 17. The at least one pull-in element 17 is preferably transferred from at least one first pull-in drive 22 to at least one second pull-in drive 23 before it leaves an area of action of the first pull-in drive 22 and thus moves along the entire at least one pull-in path.

At least one coupling element 19 is preferably connectable to and / or connected to the at least one material web 01. The at least one material web 01 is preferably provided with the at least one coupling element 19 by adhering and / or clamping this at least one coupling element 19 to the at least one material web 01. The at least one coupling element 19 is preferred as at least one Einziehspitze 19 formed. A pull-in tip 19 is, for example, a flat, deformable, preferably panel-like or foil-like coupling element 19, which preferably has a substantially triangular shape. Preferably, the at least one coupling element 19 is connectable and / or connected to the at least one retraction element 17 and in particular to the at least one suspension point 34 of the at least one suspension element 17 at its leading end in a retraction operation and further preferably form-locking connectable and / or connected. The at least one coupling element 19 preferably consists at least partially of at least one plastic material. The at least one coupling element 19 has a trailing end 37. For the sake of simplicity, it should be assumed that the trailing end 37 of the at least one coupling element 19 coincides with the leading end 31 of the material web 01, with a planar connection being of course preferred.

In a method for drawing the at least one material web 01 into the processing device, the at least one pulling-in element 17 is preferably initially located in a supply 24 of the at least one pulling-in aid 16.

In a process referred to as the preparation process, the at least one pull-in element 17 is preferably moved into a position 29 configured as a ready position 29. It can be provided, for example, that the at least one pull-in element 17 in the supply 24 of the pull-in aid 16 is already in the ready position 29.

In a process referred to as a coupling process, the at least one coupling element 19 is preferably connected to the at least one material web 01. It is not relevant whether the preparation process takes place before the coupling process or vice versa. Depending on the dimensions of the at least one coupling element 19, the at least one coupling element 19 is preferably produced by rotation of the at least one material roll 04 at least partially wound on the at least one roll of material 04 against the unwinding device A.

In a process referred to as a joining process, preferably carried out after the preparation process and the coupling process, the at least one material web 01 is connected directly or preferably via the at least one coupling element 19 to the at least one draw-in element 17. Preferably, the at least one material web 01 is indirectly connected to the at least one retraction element 17, by connecting the at least one coupling element 19 connected to the at least one material web 01 to the at least one retraction element 17. Preferably, the at least one material web 01 is positively connected to the at least one retraction element 17. More preferably, the at least one material web 01 is indirectly positively connected to the at least one retraction element 17 by the at least one connected to the at least one material web 01 coupling element 19 is positively connected to the at least one retraction 17.

In a process referred to as a positioning process, the at least one pull-in element 17 is preferably moved into a position 28 designed as a start position 28. In the positioning process, the at least one roll of material 04 is preferably rotated in the unwinding direction A about the rotation axis 03, for example in order to facilitate and / or facilitate the movement of the at least one pull-in element 17. If appropriate, the positioning process can be dispensed with, for example if it is advantageous for geometrical reasons to use the standby position 29 at the same time as the start position 28. The connection process is preferably carried out before the positioning process, but can also be done with the appropriate geometry after the positioning process. If the connection process takes place before the positioning process, the leading end 31 of the material web 01 and / or the at least one coupling element 19 is preferably used in the positioning process at least partially around the roller 13, for example measuring roller 13, preferably such that subsequently the at least one coupling element 19 and / or the at least one material web 01 touches the roller 13 at a wrap angle of at least 90 ° and more preferably at least 135 °.

In a process referred to as a tensioning process, preferably carried out after the joining process and the positioning process, the at least one material web 01 is tensioned until a web tension is above a first predetermined value, preferably nonzero. For this purpose, the roll of material 04 is preferably rotated by means of the at least one first drive motor counter to the unwinding direction A about the rotation axis 03, preferably until the web tension has reached the first predetermined value, preferably wherein the at least one pull-in element 17 remains in the start position 28. In particular, the at least one material web 01 to be pulled in is tensioned by rotation of the at least one material roll 04 against the unwinding direction A about the axis of rotation 03 to which the at least one material web 01 to be fed is wound at least partially. Alternatively or additionally, in principle, the at least one pull-in element 17 can also be moved along the at least one pull-in path in order to increase the web tension. The web tension is preferably measured by means of at least one sensor arrangement. Preferably, the at least one designed as a dancer lever 12 or pendulum lever 12 lever 12 is formed as part of such a sensor device and / or this lever 12 is monitored by a sensor device. A reference force, which is exerted on the lever 12, for example by a spring and / or a hydraulic piston and / or a pneumatic piston, presses the lever 12 in a basic position. The material web 01 wraps around the roller 13 arranged on the lever 12 such that an increase in the web tension of the material web 01 deflects the lever 12 counter to the reference force. The deflection of the lever 12 is thus a measure of the web tension of the at least one material web 01.

Preferably, the at least one sensor arrangement also acts in a processing operation, for example a printing operation, in which the at least one material web 01 is unwound at a process speed from the at least one material roll 04, with the at least one first drive motor together to produce a web tension at or above a certain one Value and / or within certain limits. The first predetermined value of the web tension is preferably the lowest value of the web tension that can be measured by the sensor device. More preferably, the first predetermined value of the web tension is that value of the web tension at which the lever 12 is moved out of the basic position. Preferably, the tensioning process is initiated as soon as the at least one pull-in element 17 has arrived at the start position 28. Preferably, the reference force is adjustable, for example, to be able to set different web tension in the processing operation, which are preferably each controlled such that the lever 12 is held in a central position. Therefore, the respective reference force must be adjustable so that this center position corresponds in each case to the desired web tension. Preferably, the reference force during the voltage operation is set to correspond to a control of the web tension to 20 N to 40 N (twenty Newton to forty Newton). Preferably, the reference force during the voltage process is set such that it corresponds to a regulation of the web tension to a lowest adjustable value. This leads to a particularly gentle treatment of the material web 01 during a drawing-in process. At the end of the tensioning process, the rotation of the at least one roll of material 04 is preferably stopped. In particular, the drawing-in process takes place after the tensioning process.

In a process referred to as alignment process, the at least one roll of material 04 is preferably moved from a first position, which is preferably a Aufachslage, in a second position, which is preferably a roll-off. In this case, the web tension is preferably maintained above the first predetermined value and / or a second predetermined value and is preferably the at least one carrier 09 or support frame 09 by means the pivot drive is pivoted about the pivot axis 07 and the material roll 04 is preferably rotated by means of the at least one first drive motor counter to the unwinding A about the rotation axis 03 and / or moves the at least one pull-in 17 along the at least one Einziehwegs. The alignment process preferably takes place after the tensioning process. Preferably, a regulation of the web tension takes place from the tensioning process by means of a same system, as well as during a processing operation, for example printing operation. It is conceivable to carry out the tensioning process after the alignment process and accordingly to increase the web tension to or above the first predetermined value only when the at least one roll of material 04 is in the second position, that is to say preferably the unrolling position. A second predetermined value may for example be a tolerance value which is below the first predetermined value and takes into account fluctuations in the web tension during the drawing process.

In the later, for example, subsequent and preferably final, referred to as retraction process operation is preferably the at least one retraction 17 moves along the at least one Einziehwegs and at the same time rotated the at least one roll of material 04 in the unwinding A. As a result, the at least one material web 01, which is preferably connected via the at least one coupling element 19 to the at least one pulling-in element 17, is pulled along its transport path into the processing device. During the drawing-in operation, it is preferable to have the same web tension control of the processing device active, which is also active during a processing operation of the material web 01 in the processing device. The arranged on the lever 12 roller 13 and the at least one, rotations of at least one roll of material 04 causing and / or feasible drive are preferably part of this web tension control. Preferably, however, during the processing operation, the web tension is set at a value between 80 N / m (eighty Newton per meter) and 150 N / m (one hundred fifty Newton per meter). Preferably, the lever 12 is placed in the basic position, if after Alignment process takes a longer break before initiation of the collection process takes place. If required, the at least one roll of material 04 is preferably moved in the axial direction together with the at least one and preferably at least two support arms 08 in order to adjust and / or correct the position of the at least one roll of material 04 and / or the at least one material web 01 ,

The preparation process and / or the coupling process and / or the connection process and / or the positioning process and / or the tensioning process and / or the alignment process and / or the retraction process are manually executable, so either alone by the work of an operator or by a respective activation of a corresponding device by the operator, preferably in example, optical and / or acoustic control by the operator. Preferably, the coupling process and / or the connection process are carried out manually. Preferably, the preparation process and / or the positioning process and / or the tensioning process and / or the alignment process and / or the retraction process are machine-controlled, more preferably after an operator has given a corresponding command to a machine control and / or leave a security area of the Rollenabspulvorrichtung 02 Has. Preferably, the positioning process and / or the tensioning process and / or the alignment process and / or the retraction process are such that after the web tension is above the first predetermined value at least until completion of the retraction process at any time the at least one roll of material 04 and at least one retractable element 19 stand still at the same time.

This results in the method for drawing in the at least one material web 01, preferably formed as substrate web 01, in the, preferably the at least one material web 01 processable and / or processing, preferably designed as a rotary web press processing device, wherein the at least one roll of material 04, on the the at least one material web 01 at least partially is wound about the axis of rotation 03 is rotatably mounted and wherein in the joining process, the at least one web 01 and preferably the leading end 31 of the at least one web 01 directly or preferably via the at least one coupling element 19 with the at least one movable and preferably along the at least a guide 18 movable retractable element 17 of the at least one Einziehhilfe 16 is preferably reversibly connected, which is further preferably at least one Einziehkette 17 and / or at least one Einziehband 17 and / or at least one Einziehseil 17 is formed, and wherein the at least one roll of material 04 after Connection process against the unwinding A is rotated about the rotation axis 03 until the web tension of the at least one material web 01 reaches the first predetermined, preferably non-zero value, preferably while the at least one Einziehhilfe 16 and in particular the at least one, preferably as Einzi ehkette 17 trained retraction 17 is held stationary. The at least one coupling element 19 is preferably reversibly connected to the at least one pull-in element 17 insofar as it is suspended there by means of a hook and an eyelet and is more preferably secured. The at least one pull-in element 17 is preferably completely reversibly movable by the processing device and is further preferably reversibly changed by the method at most reversibly. Preferably, in the at least one subsequent retraction process, the at least one retraction element 17 is moved together with the at least one leading end of the at least one material web 01 along the at least one retraction path defined by the at least one guide 18 of the retraction aid 16 and at the same time becomes the at least one material roll 04 rotated in the unwinding A.

In a preferred embodiment, the method is characterized in that the at least one material web 01 is initially provided in the coupling process with the at least one, preferably designed as Einziehspitze 19 coupling element 19 and this at least one coupling element 19 with the at least one retraction element 17 and preferably with the at least one pull-in element 17 is connected, the farther preferably as the at least one Einziehkette 17 is formed.

Preferably, the method is characterized in that the at least one material web 01 is retracted in the positioning process by means of at least one Einziehhilfe 16 at least a first portion along the transport path until the at least one retraction 17 of the at least one Einziehhilfe 16 is in the start position 28 , wherein the at least one material web 01 preferably at least partially wraps around at least one roller 13, preferably as a dancer roller 13, in particular before the at least one material roller 04 is rotated counter to the unwinding direction A about the rotation axis 03 and further preferably wherein the at least one material roller 04 is rotated in the unwinding direction A about the rotation axis 03.

Preferably, the method is characterized in that, as soon as the web tension has reached the first predetermined values, at least one sensor device generates a corresponding signal. The at least one sensor device has, for example, a roller 13 formed as a measuring roller 13. The measuring roller 13 is, for example, the roller 13 mounted on the lever 12. The sensor device has, for example, piezo elements arranged on bearings of the measuring roller 13 and / or an angular position sensor monitoring the lever 12.

Preferably, the method is characterized in that, as soon as the web tension has reached the first predetermined values, the at least one roller 13 is displaced from its basic position by forces transmitted by the at least one material web 01 and this displacement of the at least one roller 13 by means of the at least a sensor device is detected.

Preferably, the rotation of the at least one roll of material 04 is stopped counter to the Abspulrichtung A, as soon as it is detected that the web tension is the first has reached predetermined value. In one embodiment, the rotation of the roll of material 04 is not stopped once the web tension has reached the first predetermined value, but the alignment process is initiated as soon as the web tension has reached the first predetermined value. In one embodiment, the rotation of the roll of material 04 is stopped as soon as the web tension has reached the first predetermined value and the alignment process is initiated as soon as the web tension has reached the first predetermined value.

Preferably, the method is characterized in that the at least one roll of material 04 is in the first position relative to the Rollensabpulvorrichtung 02, which is preferably designed as Aufachslage before the web tension reaches the first predetermined values and that the at least one roll of material 04 in the Aligning process is transferred to the second position relative to the Rollensabpulvorrichtung 02, which is preferably designed as a roll-off after the web tension has reached the first predetermined values, preferably by pivoting the at least one carrier 09 or support frame 09 about the pivot axis 07. Preferred held during the alignment process, the web tension above the first predetermined value and / or a second predetermined value. During the alignment process, the at least one roll of material 04 is preferably rotated again and / or counter to the unwinding direction A about the rotation axis 03.

Preferably, the method is characterized in that preferably after release by an operator preferably the positioning process and at least the tensioning process and preferably the alignment process and at least the retraction process machine-controlled and preferably without further intervention of an operator.

Preferably, the method is characterized in that a path length traveled by the at least one pull-in element 17 is determined from signals of a rotary encoder is, with the at least one retraction element 17 and / or at least one at least one retractable element 17 drivable and / or driving Einziehantriebs 22; 23 is arranged cooperatively and / or cooperatively. More preferably, the method is characterized in that the at least one retraction 17 is formed as the at least one with the at least one guide 18 cooperative and / or cooperating Einziehkette 17, by means of at least one Einziehantriebs 22; 23 is driven and / or driven. It is preferred to conclude from signals of the rotary encoder that the at least one pull-in element 17 has arrived at the start position 28. Preferably, the at least one sensor designed as at least one rotary encoder is part of the at least one retraction drive 22; 23 trained.

The at least one rotary encoder is preferably designed as an absolute encoder. A rotary encoder is a component that detects or can detect relative rotational movements of two components relative to one another. The at least one rotary encoder can be designed as at least one pulse generator, which emits a same pulse every time a rotational angle position changes by a certain angle. An absolute value encoder is a component which can detect or detect a rotational angle position of two components relative to one another without their movement relative to one another. The at least one rotary encoder can be so with the at least one Einziehantrieb 22; 23 cooperate, that a rotation of a rotor of the at least one Einziehantriebs 22; 23 triggers a signal of at least one rotary encoder directly or via a transmission. The at least one rotary encoder can also interact directly with the at least one catching element 17, for example by a gear and / or a friction wheel of the at least one rotary encoder being set in rotation by a movement of the at least one pulling-in element 17 and this rotation being a signal directly or via a gear of the at least one rotary encoder triggers.

Alternatively, at least one arrival sensor, for example in Shape of an optical and / or acoustic and / or inductive sensor 26; 27 at least one relevant position 28; 29, for example, the start position 28 and / or the standby position 29th

LIST OF REFERENCE NUMBERS

01

Material web, substrate web, paper web

02

Roll-off device, roll changer

03

axis of rotation

04

Material roll, substrate roll

05

-

06

axis of rotation

07

swivel axis

08

Beam

09

Carrier, supporting frame

10

-

11

frame

12

Lever, dancer lever, pendulum lever

13

Roller, dancer roller, pendulum roller, measuring roller

14

infeed

15

-

16

pulling

17

Pull-in element, pull-in chain, pull-in tape, pull-in rope

18

Guide, chain guide

19

Coupling element, pull-in tip

20

-

21

Roller holding device, clamping device, clamping device, clamping mandrel, clamping cone, mandrel, clamping cone, clamping shaft

22

Retractable drive, electric motor, position controlled, first

23

Retractable drive, electric motor, position controlled, second

24

stock

25

-

26

sensor

27

sensor

28

Position, starting position

29

Position, standby position

30

-

31

End, leading (01)

32

End, leading (17)

33

End, trailing (17)

34

Hanger (17)

35

-

36

End, leading (19)

37

End, trailing (19)

A

unwinding

Claims (15)

1. A method for drawing-in at least one material web (01) into a processing device, wherein at least one material roll (04) onto which a material web (01) is at least partially wound, is rotatably supported about a rotational axis (03), and wherein the at least one material web (01) is connected to at least one drawing-in element (17) of at least one drawing-in aid (16) by a connection process and wherein the at least one material roll (04) is wound about the rotational axis (03) in a direction opposite the unwinding direction (A) after the connection process is completed until a web tension of the at least one material web (01) reaches a first specified value, characterized in that during at least one subsequent drawing-in process the at least one drawing-in element (17) is moved along a transport path determined by at least one guide (18) of the drawing-in aid (16) and the at least one material roll (04) is simultaneously rotated in the unwinding direction (A).
2. The method according to Claim 1, characterized in that during the connection process the at least one material web (01) is connected to the drawing-in element (17) that is moveable along at least one guide (18).
3. The method according to Claim 1 or 2, characterized in that the at least one material web (01) is drawn-in at least partly along the transport path during a positioning process by at least one drawing-in aid (16) until the at least one drawing-in element (17) of the at least one drawing-in aid (16) arrives at a start position.
4. The method according to Claim 1, 2 or 3, characterized in that at least one sensor device detects that the web tension has reached the first specified value, and/or that the rotation of the at least one material roll (04) in a direction opposite the unwinding direction (A) is stopped as soon as it is detected that the web tension has reached the first specified value.
5. The method according to Claim 1, 2, 3 or 4, characterized in that the material roll (04) is in a first position before the web tension has reached the first specified value and that in an alignment process the at least one material roll (04) is moved to a second position after the web tension has reached the first specified value.
6. The method according to Claim 5, characterized in that the web tension is kept above the first specified value and/or above a second specified value during the alignment process and/or the at least one material roll (04) is wound one more time and/or continues to be wound in the unwinding direction (A) about the rotational axis (03) during the alignment process.
7. The method according to Claim 1, 2, 3, 4, 5, or 6, characterized in that the at least one drawing-in element (17) is configured as an at least one drawing-in chain (17) and/or as an at least one drawing-in belt (17) and/or as an at least one drawing-in cable (17) and/or that at least one coupling element (19) is configured as a drawing-in tip (19).
8. The method according to Claim 1, 2, 3, 4, 5, 6 or 7, characterized in that a path length travelled by the at least one drawing-in element (17) is determined by signals from a rotary encoder that cooperates or is capable of cooperating with the at least one drawing-in element (17) and/or is arranged to cooperate or be capable of cooperating with the at least one drawing-in drive (22; 23) that drives and/or is capable of driving the at least one drawing-in element (17).
9. The method according to Claim 8, characterized in that the arrival of the at least one drawing-in element (17) at a start position can be inferred from signals from the rotary encoder.
10. The method according to Claim 1, 2, 3, 4, 5, 6, 7, 8 or 9, characterized in that the at least one material roll (04) is moved in an axial direction together with at least one support arm (08) during the drawing-in process.
11. The method according to Claim 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10, characterized in that at least one tensioning process and the drawing-in process are machine-controlled.
12. The method according to Claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 or 11, characterized in that the width of the at least one drawing-in element (17) is less than a fifth of the width of the at least one material web (01).
13. The method according to Claim 9, 10, 11 or 12, characterized in that the at least one drawing-in drive (22; 23) is designed as an electric motor (22; 23).
14. The method according to Claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12 or 13, characterized in that a plurality of drawing-in drives (22; 23) are arranged in such a manner that a drawing-in element (17) is always in drive connection with at least one drawing-in drive (22; 23) along the drawing-in path.
15. The method according to Claim 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13 or 14, characterized in that during the connection process the at least one material web (01) is connected directly, or by at least one coupling element (19), to the at least one drawing-in element (17).

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