EP1904391A1

EP1904391A1 - Method and device for orienting a material roll prior to axial alignment in a roll changer

Info

Publication number: EP1904391A1
Application number: EP06763162A
Authority: EP
Inventors: Martin Richard Keller; Erwin Paul Josef Lehrieder; Walter Ritter; Klaus Walter RÖDER
Original assignee: Koenig and Bauer AG
Current assignee: Koenig and Bauer AG
Priority date: 2005-07-13
Filing date: 2006-05-17
Publication date: 2008-04-02
Anticipated expiration: 2026-05-17
Also published as: DE102005032600A1; DE102005032600B4; WO2007006600A1; US7832682B2; US20090116948A1; ATE511489T1; EP1904391B1

Abstract

A material roll is transported to a roll changer by being arranged on a transport carriage. The material roll and transport carriage are placed on a transfer table which is moved into position between journal bearings of the roll changer. The transfer table is adapted to move the material roll transversely and along a longitudinal axis of the material roll and can pivot in a horizontal plane. An inclined position of the material roll, arranged on the transfer table, is determined by sensors. In this determined, axially aligned position, the material roll is axially aligned on the bearing journals. The roll size of the material is determined. An axially aligned position for roller support arms of a roll carrier of the roll changer is determined as a function of the determined roll size. An axially aligned position of the transfer table is determined as a function of the determined roll size and the determined inclined position of the material roll. The position of both ends of the sleeve of the material roll, upon insertion of the transfer table into the roll changer, is detected. The material roll is then inclined by a rotary drive which is arranged on the transfer table.

Description

Method and apparatus for aligning a roll to be transported to a roll changer material

The invention relates to a method and a device for aligning a roll of material to be transported to a roll changer according to the preamble of claims 1, 2 and 37, respectively.

By EP 02 27 887 A2 a station for loading a reel changer is known in which the roll of material is retracted on a means of transport between roller support arms with clamping jaws and raised there by means of the transport. Various sensors serve the Querzentrierung and the detection of the alignment of the roller axis and center axis of the jaws, as well as the detection and control of the feed of the transport in the horizontal direction.

EP 03 91 061 A1 describes a system for loading a reel changer, in which the material roll is removed from the roll changer first into a coarse and then a fine adjustment position. The fine adjustment position corresponds to the position of the recording zones in the reel changer. In this fine setting the roll of material is locked on a means of transport and then retracted in the horizontal direction with the means of transport in the reel changer.

DE 37 31 488 A1 relates to a device for clamping a web supply roll. Various sensors ensure accurate positioning of the rollers under the clamping point. In addition, the diameter of the supply roll is determined by measuring sensors and from this the necessary clamping height is determined. If necessary, the material roll is raised to the required height by a jack. The roller sleeve is detected with a light barrier, further sensors detect the position of the Roll on arrival at the reel changer.

DE 38 22 572 C2 describes an unwinding device for bobbins of sheet material. The device allows an automatic alignment of the winding roll taking into account the actual position of the sleeve ends without a separate measuring station.

In US 41 31 206 A an automatic device for supplying a roll of material in a rotary printing machine is described. With a double carriage mechanism, a new roll is transported to the press and clamped by automatic positioning in the roll carrier, as well as the empty tubes are removed. Sensors are used to determine the parameters and position of the roll and to enable automatic ejection of the empty shell.

It is problematic if the so pre-positioned role is changed by external influences with the transfer table when entering the reel splitter in the situation, or if pre-positioning can not be guaranteed exactly by winding errors on the sleeve. This often leads to problems with the uprights, especially in the case of large roller widths, since these wide rollers are subject to different tolerances and exact positioning when roughening is all the more important.

The invention is therefore an object of the invention to provide a method and an apparatus for aligning a roll to be transported to a roll of material.

The object is achieved by the features of claim 1, 2 or 37.

The achievable with the present invention consist in particular in that the roll of material without additional operations in the roll changer correct for the automatic Aufachsen can be positioned.

A roll of material is retracted with a transfer table in the roll changer and can be pivoted on the transfer table at the entrance about its longitudinal axis.

This can for example be done by a rotating device, which is integrated on the transfer table and pivots the roll of material about a vertical axis. Optionally, an additional lifting device on the transfer table, the material roll on one or both sides raise or lower, which corresponds to a pivoting of the roll of material about a horizontal axis transverse to the longitudinal axis of the roller. By pivoting the roll of material can be precisely aligned with the engaging in them trunnions of a roll changer.

In order to position the roll of material with such a transfer table, there are several possibilities, which are explained below.

A first possibility is that the roll of material initially moves on a trolley, for example, rail-bound in a transfer table rail. First, the trolley with the roll of material is positioned centrally in the longitudinal direction on the transfer table. For this purpose, the transfer table is moved transversely to the longitudinal axis of the roller in the direction reel changer first into a measuring position. One or more measuring devices are mounted on the roll changer, which measure the distance of the front side of a new roll of material to a fixed point, in particular this happens in the outer roller area and in the region of the sleeve. For this purpose, distance sensors are preferably positioned on the roller support arms as part of a measuring device, which determine the position of the sleeve and the outer edge of the roll of material on both sides. Subsequently, the roll of material is moved with the transfer table in a Aufachsposition, which is determined from the measured values. This Aufachsposition corresponds to a theoretically optimal position of the roll of material in parallel Axis alignment between the longitudinal axis of the roll of material and the axis of rotation of the trunnions.

The next step is the alignment of the longitudinal axis via the rotary device and optionally the lifting device, with corresponding sensors providing measured values for the corresponding control devices. Now the Aufachsen done by an axial movement of the trunnions in the direction of the roller center. Thereafter, the transfer table is moved back to its original position, possibly after previous lowering of the transfer table or the lifting device or lifting the roll of material using the roller support arms.

Another possibility of roll positioning is to first determine the diameter of the roll of material on the transfer table and to determine therefrom values for the beat-up position both for the roll support arm and for the roll of material. Then roll carrying arm and transfer table are moved to this position. By means of sensors on the roller support arm, the actual sleeve position is determined and according to the deviation from the Aufachsposition turning device and / or optionally also the lifting device are driven until the Aufachsposition is actually reached. After the Aufachsen the transfer table is again moved to its starting position.

A simpler solution would be a transfer table without lifting device. Here, as in the previous variant of the transfer table is first moved to the Aufachsposition and switched the rotary drive in a freewheel. Then, during the Aufachsvorgangs when retracting the first trunnion through the loose rotating device, the roll of material is rotated so that the axis of the sleeve is aligned coaxially with the axis of the trunnions and the second trunnion can retract into the sleeve. This version can also be designed as a manual version by the rail is fixed on the transfer table against rotation and is released manually if necessary. In a preferred embodiment, parts of the device are also used after the aligned up-axis for edge alignment of running and new material web. In this case, not only the position of the edge of the new material web is scanned, but the distance between the front side of the new roll of material and a fixed point. For this purpose, the sensor of the roller positioning is preferably used. This can be dispensed with the independent displacement of a distance sensor.

The measuring device is preferably an optical path measuring system that allows non-contact measurement. In modified embodiments, however, other measuring systems can also be used, for example radar systems, acoustic sensors or interferometric sensors.

Preferably, the measuring device is mounted on a roller support arm of a roll changer. An advantage of the provision of the measuring device on the roller carrying arm is that only short measuring paths are required and these are maintained even with variable roller widths. The respective sensor is moved in these cases with the Rollentragarm so that it always has a small distance to the roll of material. Alternatively, the measuring device can be rigidly provided laterally on the roll changer frame, which lends itself, in particular, when it is desired to dispense with moving sensors.

In a preferred embodiment, the distance at the roll end side in the vicinity of the uppermost paper layer is already measured during retraction into the roll changer. For this purpose, the measuring device can also be arranged displaceable perpendicular to the roller axis. A displacement of the measuring device in the radial direction could also be coupled to a sensor for detecting the diameter of the new material roll, in which case the required radial position of the sensor can be automatically determined and adjusted. As desired value, the desired distance under normal conditions of the roller end face is preferably set to a relative fixed point in the reel changer, for example the roller carrying arm. Setpoint and actual value must each refer to the same relative fixed point.

If the actual value is equal to the target value, the roller support arms of the running and the new material roll are aligned with each other, at least for the case that the new material web has the same width as the outgoing web. In the event of a deviation from the nominal value, the clamped new material roll is adjusted by means of an adjusting drive in the axial direction by this deviation. The adjustment is already provided on each roller carrier to side edge control during operation, so that no further drive elements are required. Thus, in the case of winding faults, although at the moment of reel change, the two roller carriers are no longer aligned exactly with one another, an edge offset between the material webs during gluing is avoided or at least minimized.

Another possibility of the coaxial alignment of the roll of material is the measurement of the distance of a pivot axis from the outside of the roll on both sides of the roll of material also with distance sensors. In this variant, the roll of material can be moved into the reel changer. If the distance measurement of the two roller end points shows a difference, the material roll is not aligned in parallel, the rotary drive must be controlled. Braking of the rotary drive takes place when two identical measured values of the distance sensors are reached. According to the known roll diameter then the roll of material can be moved parallel to the transfer table until the Aufachsposition is reached.

An inexpensive option, because it dispenses with complicated sensors and controls, is the use of contact sensors or sprung stops for aligning the roll of material. For this purpose, in a preferred embodiment Be provided touch sensors at the ends of the roller support arms. The roller support arms are first moved into a narrow position, so that the material roll does not fit in between. The transfer table is first slowly moved in the direction of reel changer. If the roll of material lies in an inclined position, the touch sensor is triggered on the preceding roll side, which switches on the rotary drive. If the material roll is aligned in parallel, the touch sensor on the second support arm is triggered, this switches off the rotary drive and also the displacement of the transfer table. If necessary, a brake is additionally activated. For lighter rolls of material, the rotational drive can also remain switched off, in this case, the rotational drive is then connected momentarily when reaching the first touch sensor and locked again when the second touch sensor. The aligned roll of material can be retracted after adjustment of the roller support arms in the Aufachsposition and then aufgeachst.

Embodiments of the invention are illustrated in the drawings and will be described in more detail below.

Show it:

1 shows a transfer table in side view a) and plan view b).

2 shows a side view of a roll changer with transfer table and a first positioning device in a first embodiment;

Fig. 3 is a plan view of the roll changer of Fig. 2;

4 shows a second positioning device in a roll changer in plan view; 5 shows a third positioning device in plan view;

Fig. 6 is a plan view of a modified embodiment of the roll changer;

7 shows a further embodiment variant of a device for positioning a roll of material;

8 shows a further embodiment of a roll changer with positioning device in side view;

FIG. 9 is a plan view of the embodiment of FIG. 8; FIG.

Fig. 10 shows a preferred embodiment of a centering in different views.

Fig. 1 shows a transfer table 01, which is suitable for carrying out such a method. 1 a) shows a side view and FIG. 1 b) shows a plan view. The transfer table 01 is essentially divided into two and consists of a transport carriage 02 and a roller conveyor 03 designed as a transport carriage 03. The transport carriage 02 is preferably movable transversely to the roller longitudinal axis 07 with rails 04 on rails 06. In addition, a lifting device 08 can be provided on the transport carriage 02, with which the transfer table 01 can be adjusted on one side or on both sides in height. For this purpose, the lifting device 08 may preferably be supported on the rails 06. The lifting device 08 may, for. B. an actuator 08, z. B. working cylinder 08 in particular a hydraulic ram 08 or pneumatic ram 08 be.

On the trolley 02, a bearing ring 09 is provided, which receives a running rail 11 for the roller conveyor 03 rotatably supported by the drive 12. The rotational movement of the bearing ring 09 via a preferably electric motor rotary drive 13, which is preferably equipped with a planetary gear and has a rotary encoder (not shown). It can be done by means of springs and / or rotary drive 13 a provision in the starting position. The bearing ring 09 is formed in the form of a rolling bearing. Preferably, the bearing ring 09 has a circular shape (ie 360 ° closed). The rotational movement of the bearing ring 09 is at least +/- 10 °, preferably + / 15 °, but may also be 360 ° or more. The border of the running rail 11 on the bearing ring 09 is rounded at the transfer points and the cast-in rails 06 frontally so that it does not come to the collision with the concrete edges during rotation.

About an initiator 14 of the trolley 02 can be positioned centrally in the longitudinal direction. The initiator 14 can be realized, for example, by a light barrier which stops the drive 12 of the roller transporting means when the central position is reached. Even a simple attack would be conceivable here.

In a simpler embodiment, the lifting device 08 with the hydraulic rams 08 can also be omitted.

FIG. 2 shows a side view of a roll changer 15 with a transfer table 01 for carrying out a method. At a first roller carrier, which is formed from two in the image plane behind one another roller support arms 16, a running material roll 17 is clamped between trunnions. A new roll of material 18 was previously transported to the roll changer 15 and transferred to the transfer table 01 with the roll transport. The new roll of material 18 is in a waiting position in front of the roll changer 15. It may happen that the longitudinal axis 19 of the new roll of material 18 is not yet in parallel alignment with the central axis 21 of the trunnions of a second roller carrier, which in turn consists of two in the Image plane behind one another roller support arms 22 is formed. The oblique position of the new roll of material 18 is indicated by a slightly perspective view. A new roll of material with a smaller one Diameter is shown in dashed lines with 18 ', its longitudinal axis is denoted by 19'.

In the waiting position, the new material roll 18 and 18 'initially prepositioned centrally between the roller support arms 22.

In the illustrated waiting position with a sensor 23, z. B. diameter sensor 23, which is preferably arranged in the frame of the roll changer 15, the diameter of the new roll of material 18 or 18 'determined. This is done by measuring the distance of the roll top from the diameter sensor 23. With a known installation height of the diameter sensor 23, the roll diameter can now be determined.

The roll diameter can also be determined in other ways, for example by reading a bar code label on the new roll of material 18 or 18 '. From the diameter of the new roll of material 18 or 18 'a measuring position is determined, in which the second roller carrier is pivoted to the roller support arms 22. In Fig. 2, the roller support arms 22 are already shown in the measuring position. Dashed lines also show the roller support arm 22 ', which is pivoted into the measuring position for the smaller diameter material roll 18'.

The transfer table 01 is, as already explained in Fig. 1, by means of the rollers 04 on the rails 06 in the direction of the movement arrow 24 transversely to the longitudinal axis 19 movable. On the bearing ring 09 is rotatably mounted, which can be driven by a rotary drive 13, in particular electric motor 13. The roller conveyor 03 is mounted on the rotatable bearing ring 09 and movable with the drive 12 in the image plane to the rear and front on the transfer table 01.

On the roller support arms 22 are preferably at the ends of means for detecting position 26, for. B. first sensors 26 attached, which has a defined Have distance x to the central axis 21 of the trunnions. Preferably, the first sensors 26 are positioned on the roller support arm 22 so that in the measuring position, the central axis 21 of the support pins, the longitudinal axis 19 of the new roll of material 18 and the first sensor 26 lie in a plane. This has the advantage that the measuring position of the roller supporting arms 22 also corresponds to the receiving position and the roller carrier does not have to be adjusted again after the measurement.

In the measurement position shown in dashed lines for the material roll 18 'is the longitudinal axis 19' and the central axis 21 'and the position of the sensor 26' is not in a plane. Therefore, after the measurement, in this case, the roller supporting arm 22 has to be pivoted once more. If a lifting device 08 is provided in the transfer table 01, the roll of material 18 'could also be raised for alignment and a renewed adjustment of the roller carrier can be dispensed with.

It is also conceivable that for most processed roll diameters (eg 1, 250 and 1500 mm) separate or existing sensors are provided, which are mounted on the roller support arm 22 such that the measurement position corresponds to the pickup position and the corresponding sensors according to the Measurement of the roll diameter can be activated.

The further process sequence for the up-broaching in a preferred embodiment will be explained with reference to FIG. 3, which shows a plan view of the roll changer 15 according to FIG. 2. The outgoing material roll 17 is clamped with its sleeve in support pins 27, which are each mounted on a roller support arm 16 of the first roller carrier.

The roller support arms 22 of the second roller carrier are in the Aufachsposition, that is, they are in the axial direction further apart than in the cocked position, so that the roll of material 18 on the transfer table 01 between trunnions 28th the second roll carrier can be retracted. This is done by moving the trolley 02 on the rails 06 in the direction of the roll changer 15 transverse to the longitudinal axis 19 of the roll of material 18. First, the longitudinal edge 29 of the new material roll 18 passes the first sensors 26. In this case, the distance Z1 and Z2 of the roll end faces to the Sensors 26 measured. If Z1 = Z2, then in the most favorable case, the longitudinal axis 19 is already aligned parallel to the central axis 21 of the trunnions 28. But if there is a winding error of the roll of material 18 or a sleeve offset, so a further criterion for coaxial alignment of the roll of material 18 with the central axis 21 of the support pin 28 must be used.

The roll of material 18 is therefore initially moved at a constant speed in the direction of roll changer 15. Now recognizes the roller sleeve by the sensor 26 detects and stores the measuring points M1 and M2 as the sleeve passes through a laser beam. The points are detected separately on both sides of the roll of material 18 and from this an axial offset y is determined. Of course, other sensors can be used for this measurement, which determine the sleeve position, for example, by evaluating the magnetic field change occurring during the passage of the sleeve.

Likewise, the axial offset y could be determined simply by the path difference of the measuring points M1 on both sides of the roll changer 15.

If there is an axial offset y ≠ 0, either the bearing ring 09 can be rotated by means of the rotary drive 13 and the transfer table 01 can be moved transversely again until the axial offset y is corrected. But it can also be the rotary actuator 13 is switched to instantaneous and the Rollentragarm 22 on the side of the correct sleeve position first moves into the sleeve, whereby the roll of material 18 is automatically rotated with the loose bearing ring 09 until the second sleeve side is aligned. Now also the other roller support arm 22 can retract into the sleeve. The further Aufachsvorgang takes place in a known Wise.

With the sensor 26, the distance to the end face 31 of the new material roll 18 is additionally measured in the clamped state of the new material roll 18. Since the end face 31 is not always parallel to the roller support arm 22 of the roller carrier, as is illustrated by the dotted edge line, the distance measurement should be made as possible in the outer region of the end face 31, ie close to the uppermost material layer of the new roll of material 18th

As setpoint for the edge alignment, a machine-related standard distance of the end face 32 of the running material roll 17 to the associated roll support arm 16 can be specified with correct winding. The deviations between the actual position of the running material web and the assumed standard value are low near the middle of the roll. In modified embodiments, but also in addition a distance measurement on the running material roll 17 with a means for position detection 33, z. B. a second sensor 33, so as to determine the target value for the new roll of material 18 exactly.

A comparison of the actual value with the setpoint yields a position deviation. In the event of an existing position deviation, the clamped new material roll 18 is moved in the axial direction until a position corresponding to the desired value has been reached. In this case, the distance between the end face 31 of the new roll of material 18 and the first sensor 26 does not change. Rather, the roller carrier is moved with the roll of material 18 to compensate for the deviation from the desired value by changing the position of the new roll of material 18.

A displacement of the new material roll 18 in the axial direction takes place by synchronous movement of the roller support arms 22 of the second roller carrier along a second travel axis 34 by means of an adjustment drive. Similarly, the roller support arms 16 of the first roller carrier along a first travel axis 36 are adjusted by a separate second actuator to compensate for the existing edge offset.

The adjustment to adjust the edge position can be done either by continuous measuring and driving or by measuring once, determining the deviation and repositioning the new roll of material 18 by the determined deviation amount.

At the roller support arms 16 of the first roller carrier, a second sensor 33 corresponding to the first sensor 26 is provided in each case. After the roll has been replaced, this roll carrier can again receive a new roll of material, in which case again the distance to the front side is determined.

The same procedure is to be used accordingly for small rolls of material 18 'except for the previously described pivoting of the roll support arms 22.

FIG. 4 shows a further embodiment of a device for aligning the new material roll 18 in the roll changer 15. The overall procedure is similar to that already described. Sensor 37, z. B. distance sensors 37, which are preferably mounted in the vicinity of the second travel axis 34 to the roller carriers 22, measure when retracting the transfer table 01 in the roll changer 15, the distances S1 and S2 from the longitudinal edge 29 of the new roll of material 18. For unequal readings for S1 and S2, the material roll 18 is rotated until the measured value is equalized. Thereafter, the roll of material 18 is fully retracted into the roll changer 15 and aufgeachst.

Fig. 5 shows an embodiment with sensor 38, z. B. touch sensors 38 which are attached to the roller support arms 22. In this embodiment, no complicated evaluation systems for the measured values are necessary, because the alignment directly over a touch measurement takes place. To align the roll of material 18, the roller support arms 22 are first moved inward along the traverse axis 34, so that the new material roll 18, which travels transversely to the longitudinal axis 19, can strike the contact sensors 38 with its longitudinal edge 29. If the roll of material 18 is skewed, as indicated in FIG. 5, the leading part of the longitudinal edge 29 will first strike against the touch sensor 38 shown on the right. This can directly switch the rotary drive 13 clockwise until the other side of the roll of material 18, the left touch sensor 38 is actuated, which stops the rotary drive 13. Thus, the longitudinal axis 19 of the roll of material 18 is aligned parallel to the central axis 21 of the support pin 28.

An even simpler variant can be realized when the first triggered touch sensor 38 switches the bearing ring 09 in a freewheel and the roll of material 18 is rotated and aligned on the roller conveyor 03 by the movement of the transfer table 01. When touching the second touch sensor 38, the bearing ring 09 and thus the roller conveyor 03 are locked again. Subsequently, the roller support arms 22 are moved to the Aufachsposition and the transfer table 01 can be retracted between the support pin 28, where the further Aufachsvorgang takes place as known.

To further illustrate the possibilities of use of the intended for the alignment of the new roll of material 18 sensors 26; 33 in the edge alignment is shown in Fig. 6, the roll changer 15 again in plan view. The method for minimizing the edge offset has already been described in detail in connection with FIG. The running material roll 17 is clamped between the roller support arms 16 of the first roller carrier. The new roll of material 18 is in the position prior to clamping. When tightening the roller support arms 22 of the second roller carrier are moved in the opposite axial direction towards the middle of the roller until the support pins 28 engage in the sleeve of the new roll of material 18, not shown. Preferably, the first sensor 26 is attached to the roller support arm 22 of the second roller carrier, which may be the same sensor used for roller alignment as described above. With this sensor 26, the distance to the end face 31 of the new roll of material 18 is measured in the clamped state. The end face 31 does not run in each case parallel to the roller carrying arm 22 of the roller carrier, as is again illustrated by the dashed edge line.

For aligning a roll of material 18 supplied to the reel axle in a reel changer 15, it is also possible to use a device according to the following embodiment, as shown in FIG. 7:

On the roller support arms 16; 22 of the roller carrier is a feed unit 41 of a means for position detection 42, in particular an alignment element 42, z. B. an alignment cone 42 mounted with a conical tip. This alignment element 42 is located at the same radius as the support pin 27; 28th

The roll of material 18 is moved with the transfer table 01 according to the previously determined diameter to a defined Aufachsposition.

The roller support arms 16; 22 of the roller carrier are rotated in accordance with the previously determined diameter to an alignment position, by the Aufachsposition minus angular offset between support pin 27; 28 and alignment cone 42 is defined. In this position, the Ausrichtkegel 42 is moved forward towards the sleeve to align the sloping roll of material 18. Subsequently, the Ausrichtkegel 42 is moved back again and the roller support arms 27; 28 rotated in the Aufachsposition. The aligned roll of material 18 can now be addressed.

The Ausrichtkegel 42 may in the feed unit 41 by means of at least one Actuator 43, z. B. working cylinder, in particular pneumatic cylinder relative to the support pin 27; 28, in particular linear in the direction of a longitudinal axis of the adjacent trunnion 27; 28th

These Ausrichtkegel 42 are preferably adjacent to all four trunnions 27; 28 arranged.

FIGS. 8 and 9 show a further embodiment of a roll changer 15, in which the means for detecting the position are arranged on the side frame of the roll changer 15. The means for position detection are in this embodiment laser sensors 44, 45 which are fixedly arranged on the roll changer. The method for aligning the material roll 18 or 18 ', which is carried out by the illustrated embodiment, will also be explained with reference to this FIG.

When retracting the roll of material 18 or 18 'in a theoretical Aufachsposition in the roll changer 15 is detected by the laser sensors 44, 45 in the transport direction leading edge of the roll of material 18 or 18'. The theoretical Aufachsposition the transfer table is the position at which the roll of material 18 and 18 'coaxially aligned with the axis of rotation of the support pins 27, 28 and is arranged centrally on the transfer table. With an inclination of the material roll 18 or 18 'can thus be determined when retracting the transfer table 01 in the roll changer 15 an axial offset zder roll of material.

The axial offset z can be determined, on the one hand, by determining the position of the points M3 and M4 triggering the respective associated laser sensors 44, 45. For this purpose, a length measuring system 46 is arranged on the track 06 with absolute scale. The length measuring system determines when passing through the point M3 by the laser sensor 44, the absolute position of the transfer table 01 on the track 06 and on passage of the point M4 by the associated laser sensor 45 turn the position of the Transfertisches 01 on the track 06. From the two known dimensions is determined by subtraction of the axial offset z over the entire length of the roll. The axial offset z is subsequently halved and the theoretical Aufachsposition of the transfer table 01 corrected by the amount z / 2, so that the transfer table retracted depending on the amount of misalignment either z / 2 further in the paster, or z / 2 is stopped before.

However, the axial offset z can also be determined by measuring the time interval between the detection of the point M3 and the point M4 and multiplying it by the speed of the transfer table.

With this embodiment can also be determined whether the roll of material 18 and 18 'with respect to their longitudinal axis 19, 19' is arranged centrally on the transfer table 01. The absolute position of the transfer table 01 in the theoretical Aufachsposition with straight and centrally located roll of material 18, 18 'is known. If the roller is offset in parallel on the transfer table, then a parallel axial offset is still to be determined. For this purpose, after retracting the transfer table 01 into the theoretical Aufachsposition the roll of material 18, 18 ', the actual position of the transfer table 01 using the length measuring system 46 is determined. If this deviates from the theoretical Aufachsposition, so the transfer table 01 must be corrected by this measure v.

The calculation of the positional deviation of the material roll 18, 18 '(inclined position and additional axial offset) can be combined during retraction of the transfer table 01 into the roll changer 15.

If the transfer table 01 has taken the corrected Aufachsposition, the trunnions 27, 28 are retracted into the sleeve.

The support pins 27, 28 have in a preferred embodiment centering 47th on, by which the retraction is facilitated in a sleeve of an inclined roller. When retracting the support pin 27 in the sleeve of the roll of material 18, 18 ', the bearing ring 09 of the transfer table 01 is switched momentarily and the roller conveyor 03 can rotate when retracting the support pins 27, 28 in the sleeve in the required position. The roller conveyor 03 is preferably connected by springs 48 to the trolley 02 such that this is rotated back after the Aufachsvorgang of the springs 48 in the basic position.

If the determination of the axial offset z shows that the inclined position of the material roll 18, 18 'is greater than a capture range of the centering tips 47, an error message is generated and the thinning process is stopped. In this case, the material roll must either be repositioned on the transfer table or the broaching process must be performed manually on the reel splicer.

In Fig. 10, a preferred embodiment of a centering tip 47 is shown as it can be found on trunnions 27, 28 or 42 Ausrichtkegel use. Fig. A) shows a perspective view, Fig. B) shows a view from below and Fig. C) shows a sectional view along the line A-A in Fig. B).

The centering tip 47 has a central bore 49 and four continuous mounting holes 51. On one of the material roll, not shown, upper side 52, the centering tip 47 has a slope 53 extending towards the edge. The angle α of this chamfer 53 is preferably 35 ° with respect to the axis of rotation of the trunnions.

The roll changer is preferably arranged in a web-fed rotary printing press.

The processes of transport and / or alignment and / or Aufachsen the roll of material preferably carried out by means of a common control device. These Control device is preferably designed as a control station of a printing press.

LIST OF REFERENCE NUMBERS

01 transfer table

02 Dolly

03 Roller transport means, transport trolley

04 roller

05 -

06 rail

07 roller longitudinal axis

08 lifting device, actuator, working cylinder, hydraulic ram, pneumatic ram

09 camp wreath

10 -

11 rail

12 drive

13 rotary drive, electric motor

14 initiator

15 reel changers

16 roll carrying arm

17 roll of material, draining

18 roll of material, new

19 longitudinal axis (18)

20 -

21 central axis

22 roll carrying arm

23 sensor, diameter sensor

24 movement arrow

25 -

26 Position detection means, sensor, first

27 trunnions supporting journal

Longitudinal edge (18)

-

End face (18; 18 ')

Front side (17)

Position detection means, sensor, second

Trajectory, second

-

Trajectory, first

Sensor, distance sensor

Sensor, touch sensor

-

feed unit

Position detection means, alignment element, alignment cone

actuator

Position detection means, laser sensor

Length measuring system

centering

feathers

drilling

-

drilling

top

bevel

'Material roll, new' longitudinal axis (18 ') 21 'central axis

22 'roll carrying arm

26 'Position detection means, sensor, first

v Axial offset, parallel x distance y misalignment z misalignment

M1 measuring point

M2 measuring point

M3 measuring point

M4 measuring point

51 distance

52 distance α angle

Z1 distance, left

Z2 distance, right

Claims

claims

1. A method for aligning a material roll (18, 18 ') to be transported to a roll changer (15), wherein the material roll (18, 18') arranged on a transport carriage (03) is mounted on an up to between support pin (27, 28) of the roll changer (15), wherein the transport carriage (03) is arranged on the transfer table (01), which supports the material roll (18, 18 ') transversely and along a longitudinal axis (19, 19') of the material roll (18 18 ') and can pivot in a horizontal plane, characterized in that

an inclination of the material roll (18, 18 ') arranged on the transfer table (01) is determined by means of sensors (26, 26', 33, 38, 44, 45),

- and in this fixed Aufachsposition the material roll (18, 18 ') on the support pin (27, 28) is addressed,

that the roll size of the roll of material 18, 18 'is determined,

that a Aufachsposition for roller support arms (16, 22, 22 ') of a roller carrier of the roll changer (15) is determined as a function of the determined role size,

that a Aufachsposition of the transfer table (01) in dependence on the determined roller size and determined inclination of the roll of material (18, 18 ') is determined, the position of both end faces of the sleeve of the roll of material (18, 18') during retraction of the transfer table (01) be detected in the reel changer (15),

- That the inclination of the roll of material (18, 18 ') by means of a on the transfer table (01) arranged rotary drive (13).

2. A method for aligning a material roll (18, 18 ') to be transported to a roll changer (15), wherein the material roll (18, 18') is moved on a transfer table (01st to 01th) between the support pin (27, 28) of the roll changer (15) ) is aligned, wherein the transport carriage (03) on the transfer table (01) is arranged, which roll the material (18, 18 ') transversely and along a longitudinal axis (19, 19') of the roll of material (18, 18 ') and in a horizontal plane can pivot, characterized in that an inclined position of the arranged on the transfer table (01) roll of material (18, 18 ') by means of sensors (26, 26', 33, 38, 44, 45) is determined.

3. The method according to claim 1 or 2, characterized in that the longitudinal axis (19, 19 ') of the roll of material (18, 18') relative to the axis of rotation of the support pin (27, 28) of the roll changer (15) is aligned.

4. The method according to claim 1 or 2, characterized in that the longitudinal axis (19, 19 ') of the roll of material (18, 18') is aligned parallel to the axis of rotation of the support pins (27, 28) of the roll changer (15).

5. The method of claim 1 or 2, characterized in that after clamping, the position of the roll of material (18, 18 ') is determined and optionally a correction of the axial alignment for edge-accurate connection of the roll of material (18, 18') with a running web he follows.

6. The method according to claim 2, characterized in that on the basis of this determined inclination of the material roll (18, 18 ') a Aufachsposition of the transfer table (01) is determined that in this fixed Aufachsposition the roll of material (18, 18') on the trunnions ( 27, 28).

7. The method according to claim 1 or 2, characterized in that an offset of the roll of material (18, 18 ') in the direction of its longitudinal axis (19, 19') is determined with respect to an optimal Aufachsposition.

8. The method according to claim 1 or 2, characterized in that a parallel offset of the roll of material (18, 18 ') transversely to the roller longitudinal axis (19, 19') with respect to an optimal Aufachsposition of the roller carriage (02) is determined

9. The method according to claim 1 or 2, characterized in that the roll of material (18, 18 ') is aligned in a central position between roller support arms (16, 22, 22') of a roller carrier of the roll changer (15) by processes in the axial direction.

10. The method according to claim 2, characterized in that the roller size of the roll of material (18, 18 ') is determined.

11. A method according to claim 10, characterized in that a Aufachsposition for roller support arms (16; 22; 22 ') of a roller carrier of the roll changer (15) is determined in dependence on the determined roll size.

12. The method according to claim 10, characterized in that a Aufachsposition of the transfer table (01) is determined in dependence on the determined role size.

13. The method according to claim 1 1, characterized in that the roller carrier is pivoted in the Aufachsposition.

14. The method of claim 1, 2 or 9, characterized in that the roll of material (18, 18 ') transversely to its longitudinal axis (19, 19') is retracted into the roller carrier.

15. The method according to claim 1, 5, 7 or 9, characterized in that the position of the roll of material (18, 18 ') is determined again.

16. The method according to claim 1 or 2, characterized in that the roll of material (18, 18 ') by pivoting the roll of material (18, 18') is axially aligned.

17. The method according to claim 1 or 2, characterized in that trunnions (27, 28) of a roller carrier are retracted into a sleeve of the roll of material (18, 18 ').

18. The method according to claim 17, characterized in that a pivoting of the roll of material (18, 18 ') during retraction of the support pins (27, 28) takes place by the roll of material is freely rotatably mounted about a vertical axis.

19. The method according to claim 1 or 2, characterized in that the axial alignment of the roll of material (18, 18 ') is measured in the horizontal direction.

20. The method according to claim 19, characterized in that the roll of material (18, 18 ') in the horizontal direction by driving a lifting device (08) is aligned and that optionally the receiving position of the roller carrier is corrected.

21. A method according to claim 2, characterized in that the position of both end faces of the sleeve of the roll of material (18, 18 ') during retraction of the transfer table (01) in the reel changer (15) are detected.

22. The method according to claim 1 or 2, characterized in that a distance to the longitudinal edge (29) of the roll of material (18; 18 ') is detected at at least two longitudinally spaced points.

23. The method according to claim 1, 2, 21 or 22, characterized in that an axial offset (y) relative to the axis of rotation between the support pins (27, 28) of the Roller carrier is detected from the determined distances of the positions.

24. The method of claim 1, 2 or 22, characterized in that the roll of material (18, 18 ') is pivoted to minimize the axial offset (y).

25. The method according to claim 24, characterized in that the distance to the longitudinal edge (29) of the material roll (18, 18 ') by means of non-contact sensors (26, 26', 33) is detected.

26. The method of claim 1 or 2, comprising the steps of:

Output of a first signal when a first roll face of the roll of material

(M3) a first sensor (26; 44) during retraction of the transfer table

(01) happened in the roll changer;

Output of a second signal when a second roller face of the

Material roll a second sensor (26, 45) during the retraction of

Transfertisches (01) happened in the reel changer;

Determining a Achsschrägstellung (z) of the roller longitudinal axis relative to the

Rotation axis of the trunnions (27, 28) from the two signals of the two

Sensors (44; 45).

27. Method according to claim 26, characterized in that the signals are output in each case when passing through the lateral surface of the roll of material (18, 18 ').

28. Method according to claim 26, characterized in that the signals are output in each case when the sleeve of the material roll (18, 18 ') passes.

29. The method according to claim 26, characterized in that the position and / or movement of the transfer table (01) is used to determine the Achsschrägstellung (z) of the roller longitudinal axis (19; 19 ').

30. The method of claim 1, 2 or 26, comprising the steps of:

Determining a position of the transfer table (01) when a first

Roller end face (M3) passes a first sensor (44);

Determining a second position of the transfer table (01) if the other

Roller end face (M4) passes a second sensor (45);

Determining an axial offset (z) and / or axial skew (z) of the

Roller longitudinal axis (19, 19 ') relative to the axis of rotation of the trunnions

(27, 28), from the difference of the positions of the transfer table (01).

31. The method of claim 1, 2 or 26, comprising the steps of:

Determining a time between passing the roller end faces at a first (44) and a second sensor (45);

Determining an axial offset (z) and / or Achsschrägstellung (z) of the roller longitudinal axis (19, 19 ') relative to the axis of rotation of the trunnions (27, 28) from the determined time and a speed of the transfer table (01).

32. The method of claim 30 or 31, characterized in that a travel path of the transfer table (01) is corrected to compensate for the specific axial offset.

33. The method according to claim 1 or 2, characterized in that the inclination of the material roll (18, 18 ') by means of the support pin (27; 28) arranged centering tips (47) is corrected.

34. Method according to claim 2, characterized in that the inclination of the material roll (18, 18 ') is corrected by means of a rotary drive (13) arranged on the transfer table (01).

35. The method according to claim 1 or 2, characterized in that the roll of material (18, 18 ') is transported on a trolley (03) on the transfer table (01).

36. The method according to claim 35, characterized in that the transport carriage (03) is transported to the Aufachsposition.

37. Device for aligning a roll of material (18, 18 ') in front of the up-axis in a roll changer (15),

a transfer table (01) with a transport carriage (03) movable thereon being arranged transversely to a longitudinal axis (19, 19 ') of the roll of material (18, 18') between two support pins (27, 28) of the roll changer (15). is movable,

the transfer table (01) being arranged to transport the roll of material (18, 18 ') between the support pins (27, 28) of the roll changer (15),

wherein the transfer table (01) permits a displacement of the roll of material (18; 18 ') along its longitudinal axis (19; 19') and a pivoting of the roll of material (18; 18 ') about its longitudinal axis (19; 19'),

- Positioning means (26; 26 '; 33; 42; 44; 45) of the roll of material (18; 18') are arranged, characterized in that the means for detecting position (26; 26 '; 33; 42; 45) an inclination of the on the transfer table (01) arranged material roll (18, 18 ') are arranged detecting.

38. Apparatus according to claim 37, characterized in that a control device for the movement control of the transfer table (01) is arranged.

39. Apparatus according to claim 38, characterized in that the control device, the alignment of the roll of material (18, 18 ') in response to the position of the roll of material detected by the means for position detection (26; 26';33;42; (18, 18 ') is arranged to control.

40. Device according to claim 38, characterized in that the control device is arranged to control the alignment of the roll of material (18, 18 ') in dependence on the inclination of the roll of material (18, 18').

41. Device according to claim 37, characterized in that the control device is arranged controlling the Aufachsposition of the transfer table (01) in dependence of an inclined position of the material rolls (18, 18 ').

42. Apparatus according to claim 37, characterized in that the transfer table (01) comprises a transport carriage (02), which is movable transversely to the longitudinal axis (19; 19 '), and carries the transport carriage (03), which in the longitudinal direction of the roll of material ( 18, 18 ') on the transport carriage (02) is displaceable and which is rotatably mounted on the transport carriage (02).

43. Apparatus according to claim 37, characterized in that the device comprises a lifting device (08), which the material roll (18, 18 ') about its longitudinal axis (19, 19') is arranged pivoting.

44. Apparatus according to claim 37, characterized in that as a means for position detection (26; 26 '; 33; 42) on the roll changer (15) sensors (38) are arranged, the distance between a fixed point on the roll changer (15) and a Longitudinal edge (29) of aufachsenden roll of material (18, 18 ') is determined arranged.

45. Apparatus according to claim 37, characterized in that as means for position detection (26; 26 ';33; 42) on the roll changer (15) sensors (26; 26'; 33) are arranged, which determine the distance between a fixed point on the roll changer (15) and the end face (31) of the aufzuschenden roll of material (18, 18 ') determining are arranged.

46. Apparatus according to claim 37, characterized in that as means for position detection (26; 26 '; 33; 42) on the roll changer (15) sensors (26; 26'; 33) are arranged, which the position differences of the two end faces of a sleeve the aufachsenden roll of material (18, 18 ') are arranged determining.

47. Apparatus according to claim 37, characterized in that as means for position detection (26; 26 '; 33; 42; 44; 45) on the roll changer (15) sensors (44; 45) and a measuring system (46) are arranged, the a position of the trolley (02) with respect to an axial offset z and / or a parallel offset ι / the roll of material (18, 18 ') determine.

48. Apparatus according to claim 37, characterized in that as means for position detection (44; 45) sensors (44; 45) are arranged, each during the retraction of the roll of material (18; 18 ') in the roll changer (15) a signal output.

49. Device according to one of claims 37 to 48, characterized in that the device further allows the minimization of an edge offset when attaching the material web of the newly aufachsenden roll of material (18, 18 ') to an outgoing web of a running material roll (17).

50. Device according to one of claims 44 to 48, characterized in that a first sensor (26; 26 ') determines the distance of the outer region of the end face (31) of the new roll of material (18; 18) from a relative fixed point, the relative to the clamped in the roll carrier new roll of material (18, 18 ') has a fixed position, and that a control device determined from a predetermined setpoint and the specific actual value a position deviation, which serves as a control variable for controlling an adjustment to the clamped new roll of material (18, 18 ') with the roller carrier to move the positional deviation in the axial direction, wherein the setpoint a distance of the new material roll (18, 18') defined by the relative fixed point, in which a kantenversatzloses setting the new material web to the outgoing web he follows.

51. Apparatus according to claim 50, characterized in that the distance measurement is effected by optical path measurement.

52. Apparatus according to claim 51, characterized in that the sensor (26; 26 ') comprises an illumination source and a radiation-sensitive receiver.

53. Device according to one of claims 40 to 52, characterized in that the first sensor (26; 26 ') in the radial direction on the roller support arm (22; 22') is displaceably mounted.

54. Apparatus according to claim 37, characterized in that the first sensor (26; 26 ') is coupled to a device for detecting the diameter of the new material roll (18; 18) and is moved as a function of the determined roll diameter in an individual measuring position, to scan the outer area of the new roll of material (18, 18 ').

55. Apparatus according to claim 37, characterized in that for aligning the roll of material (18, 18 ') alignment elements (42, 47) are arranged.

56. Device according to claim 55, characterized in that the alignment elements (42; 47) are designed as alignment cones (42; 47).

57. Apparatus according to claim 55, characterized in that the alignment elements (42) adjacent to the support pins (27; 28) are arranged.

58. Apparatus according to claim 55, characterized in that the alignment elements (42) relative to the support pins (27; 28) are spatially variable.

59. Apparatus according to claim 37, characterized in that a control device for controlling the Antransports and / or alignment and / or Aufachsens the rolls of material (18, 18 ') is arranged.

60. Apparatus according to claim 37, characterized in that the supporting pins (26; 27) are provided with centering points (47).

61. Apparatus according to claim 37, characterized in that the transport carriage (03) on the transfer table (01) by means of a bearing ring (09) is pivotally mounted.

62. Apparatus according to claim 37, characterized in that for aligning the roll of material (18, 18 ') on the transfer table (01), a rotary drive (13) is provided.

63. Apparatus according to claim 62, characterized in that the rotary drive (13) on the transfer table (01) is arranged.

64. Apparatus according to claim 62, characterized in that the rotary drive (13) comprises an electric motor.