EP1697243A2

EP1697243A2 - Reel changer and method for carrying out a flying reel change

Info

Publication number: EP1697243A2
Application number: EP04766793A
Authority: EP
Inventors: Anton Löffler; Thomas Potzkai
Original assignee: Koenig and Bauer AG
Current assignee: Officine Meccaniche Giovanni Cerutti SpA
Priority date: 2003-12-01
Filing date: 2004-09-15
Publication date: 2006-09-06
Also published as: WO2005054101A3; CN100595117C; WO2005054101A2; US20070102564A1; US20090050731A1; CN1886318A

Abstract

The invention relates to a reel changer for supplying a web of material, in whose holding fixtures at least one reeling off roll of material and at least one new roll of material prepared for the reel change are rotationally mounted. Each roll of material is held by two holding fixtures, and each holding fixture has a supporting journal with gripping jaws. At least four collets are arranged in an axial direction of the supporting journals.

Description

description

Reel changer and method for performing a flying reel change

The invention relates to reel changers and methods for carrying out a flying reel change according to the preamble of claim 1, 2, 3, 4, 47 or 48.

Such roll changers are used on printing presses and serve to feed the material web used as printing material. As a rule, paper webs are used. The material web is wound on a material roll and runs from this material roll.

So that the entire printing press does not have to be stopped when a roll of material is exhausted, it is known to carry out a so-called flying roll change. For this purpose, a new material roll is clamped in the roll changer, at which, for example, corresponding adhesive points are prepared for connection to the running material roll. When changing rolls on the fly, the new material roll is then accelerated to a peripheral speed which corresponds to the web speed of the drawn-in material web. During the actual web change, the web start of the new material roll is connected to the running web of material and the running web of material is cut essentially at the same time. In this way, the beginning of the web of the new material web is drawn into the printing press from the old web of material and machine downtime is avoided.

Depending on the remaining thickness of the running material roll and the geometry parameters of the running material roll, in particular its width and the sleeve diameter, the running material roll has a constantly changing self-critical resonance speed. In particular with relatively large web widths, for example web widths> 3,600 mm, and very high web take-off speeds, for example

Web take-off speeds of 15 m / s, critical vibration conditions can occur on the running material roll due to vibration excitation in the range of the self-critical resonance speed if the residual thickness is undershot. To avoid these critical vibration conditions, it is therefore often necessary to reduce the web speed when the material roll falls below a certain residual thickness. In such applications, this means that either the material roll cannot be completely used up in order to avoid critical vibration conditions or the web take-off speed has to be reduced during the roll change. Both measures undesirably increase printing costs.

FR 2 076 474 shows a single holder for material rolls, with two rows of clamping jaws being arranged one behind the other.

DE 3627 533 A1 describes a roller carrier in which a support device is attached to a finished roller.

DE 100 56 274 A1 discloses a mandrel with two rows of clamping basins arranged one behind the other, the diameter of one row being variable from 150 to 160 mm and the diameter of the other row from 70 to 80 mm.

The invention has for its object to provide reel changer and method for performing a flying reel change.

The object is achieved by the features of claim 1, 2, 3, 4, 47 or 48. The invention is based on the basic idea of reducing the free oscillation length of the running material roll in order to influence the self-critical resonance speed of the running material roll in the desired manner.

When using the roll changer, the free oscillation length between the clamping points of the running material roll on the roll changer is reduced by providing a support device which comes into contact with the peripheral surface of the running material roll. This additional support of the material roll between the clamping points can significantly reduce the free vibration length. If, for example, the support device is brought into contact exactly in the middle between the clamping points on the circumferential surface of the running material roll, the free oscillation length is halved in this way and the self-critical resonance speed is shifted upwards accordingly. The support device is arranged in such a way that it can come to rest on the peripheral surface of the running material roll when the running material roll is arranged in the position provided for the flying roll change. This is because the critical vibrational states of the running material roll occur in particular shortly before the material roll is exhausted with a relatively small remaining thickness, so that support of the running roll is necessary in particular in the phase immediately preceding the roll change.

The manner in which the support device is constructed is fundamentally arbitrary, as long as sufficient support of the running material roll to reduce the free oscillation length is ensured. According to a preferred embodiment, the support device has at least one circumferentially supported support belt which can be pressed onto the peripheral surface of the material roll running off. This support belt can be stored on rollers, for example, and rotates at a speed that corresponds to the peripheral speed of the material roll running off. Depending on the application, it can make sense to greatly reduce the free vibration length. This can be achieved in that a plurality of support devices are provided, which come to rest spaced from one another next to one another on the circumferential surface of the running material roll. The free oscillation length only corresponds to the respective distance between two adjacent support devices or the distance of the first support device or last support device to the clamping points of the material roll running off. As a result, the free vibration length of the running material roll can be influenced in any way.

The support device can be implemented particularly easily if it does not have its own drive device. In this case, the support device itself can be driven by the transmission of frictional forces from the rolling material roll. If frictional forces are used to drive the support device, the support device should preferably be made of a wear-resistant material with a relatively high coefficient of friction in the region of the contact surface with the material roll.

As an alternative to this, it is also conceivable that a drive device is provided on the support device with which the support device is driven. For example, an electric motor can be provided for this purpose, with which one of the bearing rollers is driven for mounting the support belt. By appropriate control of the drive device, it is possible that it is accelerated to a speed which is synchronized with the peripheral speed of the running material roll before it is brought into contact with the material roll. In this case, it can be avoided that there is an undesirable slippage between the support device and the peripheral surface of the running material roll or web tears when the belt is adjusted to the material roll.

In many cases, the support device is only used in certain phases of the operation of the reel changer, in particular in the phase immediately before the flying one Role change, desired. For this reason, it is particularly advantageous if the support device is movably mounted between at least two functional positions. The first functional position corresponds to the actual use position, in which the support device comes to rest on the peripheral surface of the material roll running off and supports the material roll accordingly. The second functional position corresponds to a rest position in which the support device is not in engagement with the running material roll.

The manner in which the support device is fastened relative to the reel changer is basically arbitrary. According to a first embodiment, the support device is attached to the reel stand of the reel changer. This has the advantage that the support device is also moved when the roll stand is pivoted, and thus there is no relative movement between the support device and the correspondingly assigned material roll when the roll stand is pivoted. In particular, in this embodiment it is possible that the support device is brought into contact with the running material roll even in the position provided for the flying roll change in the position intended for the flying roll change, so that the running material roll is supported by the support device even during the pivoting of the roll stand is, preferably before the material roll is accelerated from standstill. The job is carried out simultaneously with the support belt.

To implement this embodiment, the support device can be fastened between two support arms of the roll stand, the support arms also carrying the correspondingly assigned material roll.

As an alternative to this first embodiment, the support device can also be fastened to a foundation below the position of the running material roll intended for the flying roll change, so that the support device is not an integral part of the roll changer as a result. This embodiment is particularly of Advantage if the support device can be sunk in the foundation, so that the support device in its rest position, in which the support device is sunk in the foundation, does not constitute any hindrance.

In order to be able to control or regulate the support process of the running material roll by using the support device, at least one sensor for measuring a support parameter, for example the currently applied support force or the belt tension of the support belt, can be provided on the support device. The control device provided in each case or the control loop used accordingly can process the measurement results and control or regulate the support device to a predetermined desired value.

The use of the support device offers particularly great advantages for reel changers in which material reels with a width of greater than or equal to 3,600 mm are processed. Such wide webs of printing material are used in particular in rotogravure printing with rotogravure printing presses, the high printing speeds in rotogravure leading to the problems mentioned with self-critical resonance speeds.

According to the method for operating the new roll changer, the support device is brought into contact with the running material roll in the position suitable for the flying roll change even before the running material roll is arranged. During the swiveling of the roll stand to arrange the running material roll in the position suitable for the flying roll change, the support device remains in engagement with the running material roll and ensures that the running material roll is also supported during the swiveling process. As soon as the roll stand has reached the end position in which the running material roll assumes the position suitable for the flying roll change, the support device remains in engagement with the running material roll until the flying roll change has ended and the old material roll can be braked accordingly.

As an alternative to reducing the free oscillation length or preferably in conjunction, a support device can be provided. The avoidance of self-critical resonance speeds can also be improved by reducing the free vibration length of the running material web by using longer mandrels.

So that the longer mandrels in the contact surface to the inner circumference of the sleeve of the material roll running off apply a sufficient clamping force, it is proposed that at least two clamping jaws are arranged one behind the other on the mandrel parallel to the longitudinal axis of the supporting pin. This increase in the number of clamping jaws enables a higher clamping force to be applied, so that, in addition to the reduction in the clamping length, the quality of the clamping is also achieved by increasing the clamping rigidity (increasing the clamping factor; chuck factor).

Paper widths of more than 4,000 mm, in particular 4,300 mm, and sleeves / quills with a diameter of 150 mm do not allow a safe roll change at material web speeds greater than 15 m / s with sleeves currently common in industry without a central support. Here material web speeds of max. 12 m / s can be reached.

A plurality of clamping jaws are preferably distributed adjacent to one another, in each case in a row of clamping jaws, in particular evenly spaced apart, over the circumference of the supporting pin. According to a preferred embodiment, two rows of clamping jaws arranged in the axial direction, each with eight clamping jaws in the circumferential direction, are arranged on the mandrel, which leads to high-strength clamping of the material roll on the mandrel. Exemplary embodiments of the invention are shown in the drawings and are described in more detail below.

Show it:

Figure 1 shows a first embodiment of a reel changer with support device in a side view.

Figure 2 shows a second embodiment of a reel changer with support device in a side view.

3 shows a mandrel in a perspective view;

Figure 4 is a support pin in cross section.

5 shows a cross section through a roll of material with receptacles.

Fig. 6 is a schematic view of a scissor lift table with a new roll of material;

7 shows a schematic view of a scissor lift table with a support device on a running material roll;

Fig. 8 is a schematic view of the reel changer.

1 schematically shows a first exemplary embodiment of a roll changer 01 for feeding a material web 02, in particular a paper web, in a printing machine (not shown). On the reel changer 01, a reel stand 04 which can be swiveled about a swivel axis 03 is provided, which is supported by two in the Support arms lying one behind the other in the image plane are formed. At the free ends of the roller stand 04, receptacles 05, for example mandrels 05, are fastened opposite one another, between which material rolls 06; 07 can be clamped on the reel changer 01.

In the process state shown, there are a running material roll on the roll changer 01

06 and a new material roll 07, prepared for the flying roll change. The roll stand 04 has previously been pivoted into the position shown in FIG. 1, so that the running material roll 06 assumes the position required for the flying roll change. To support the new material roll 07 and to transmit the driving forces (acceleration + brake stop) in the loading position, a support belt 08 is placed against the circumference of the new material roll

07 pressed.

As soon as the reel stand 04 has moved to the position shown in FIG. 1 in preparation for a flying reel change, a support device 11 attached to the foundation 09 below the outgoing material reel 06 is extended upwards until a support belt 12 mounted on reels 13 on the circumference of the outgoing reel of material 06 comes to the plant. Pneumatic actuating cylinders 14 are provided for extending the support device 11. The support belt 12 is synchronized to paper web speed by a frequency-controlled three-phase motor, not shown. This prevents web breaks when starting.

Due to the pressure of the support belt 12 on the circumference of the running material roll 06, the free oscillation length of the material roll 06 between the receptacles 05 is shortened, so that the self-critical resonance speed of the material roll 06 is shifted into an uncritical speed range.

2 shows a second exemplary embodiment of a reel changer 16. At the Roll changer 16 is again the material web 02, the pivot axis 03, the roll stand 04, the receptacles 05, the running material roll 06, the new material roll 07 and a support belt 08 for supporting and transmitting the driving forces of the new material roll 07.

In contrast to the reel changer 01, two support devices 17 and 18 are provided on the reel changer 16, each of which is assigned to the left or right clamping point on the reel stand 04. As indicated by dashed lines on the basis of the support device 17, the support devices 17 and 18 can be adjusted in linear guides 19 and in this way can be adjusted to the changing diameters of the material rolls 06; 07 adjusted and updated.

On the support devices 17 and 18 support belts 22 are provided, which on the circumference of the roll of material 06; 07 can be brought to the plant. Pneumatic actuating cylinders 21 are provided for starting and stopping the support straps 22, and the bearing construction of the support straps 22 can be pivoted by retracting and extending them.

Before a flying roll change with the roll changer 16, the procedure is as follows. First, the running material roll 06 is still in the so-called running position on the right side of the pivot axis 03 (not shown). In this position, the running material roll 06 is unwound as the printing process progresses until a certain roll diameter, ie a certain remaining thickness of the material roll 06 is undershot. After falling below this predetermined residual thickness, the actuating cylinder 21 is extended and the support belt 22 is brought into contact with the circumference of the material roll 06. In this way, the intrinsically critical resonance speed of the material roll 06 is shifted into an uncritical speed range, so that the material web 02 can be pulled off at an unchanged speed. As soon as the material roll 06 has been unwound to a residual thickness, which makes a roll change inevitable, the material roll 06 is pivoted by pivoting the roll stand 04 into the position on the left of the pivot axis 03, as shown in FIG. 2. Even during the pivoting movement, the support belt 22 lies against the circumference of the material roll 06 and supports it in this way.

After the material roll 06 has reached the adhesive position or loading position shown in FIG. 2 to the left of the pivot axis 03 and the new material roll 07 prepared for the roll change has been clamped in the roll changer 16, the flying roll change between the material roll 06 and the material roll 07 can be carried out in a known manner become. A reduction in the take-off speed of the material web 02 is not necessary since the critical resonance speed of the material roll 06 is shifted into an uncritical range by using the support device 17.

Since the support device 17; 18 can already be started with the new material roll 07, which is still at a standstill, and is thus present during acceleration, it can be designed without a drive motor.

3 shows a receptacle 05 which is used, for example, as a mandrel 05 on the roll changers 01 and 16, respectively. On the mandrel 05 a support pin 24 is provided, the outer circumference of the inner circumference of a roll of material 06; 07, in particular on the inner circumference of a sleeve 10, for. B. a cardboard sleeve 10 comes to rest. For the rotationally fixed connection of the material roll 06; 07 with the mandrels 05 by means of positive and positive locking, a plurality of clamping jaws 26, but in particular at least four clamping jaws 26 in the axial direction of the supporting pins 24, are provided on the supporting pins 24. Since the support pins 24 have a large insertion depth with which the free oscillation length between the clamping points can be reduced, at least two clamping jaws 26 are in each case in the direction of the longitudinal axis of the Support pin 24, ie in the axial direction of the support pin 24, arranged one behind the other, which are aligned with each other. Several mutually adjacent clamping jaws 26 are distributed over the circumference of the support pin 24, in particular evenly spaced apart. The clamping jaws 26 arranged next to one another form annular clamping jaw rows 27 and 28, each with eight clamping jaws 26. The support pin 24 of the mandrel 05 has an outer diameter D24 of approximately 150 mm.

4, a support pin 24 is shown in cross section. A length I24 of the support pin 24 is at least 250 mm in the axial direction of the support pin 24. Lengths I24 of the support pins 24 of at least 300 mm, in particular of at least 330 mm, are also advantageous. A length I26 of the clamping jaws 26 in the axial direction of the support pins 24 is at least 80 mm, in particular at least 95 mm. The sum of the lengths I26 of the clamping jaws 26 is at least 300 mm, in particular 340 mm, in the axial direction of the support pins 24. In a further embodiment, the sum of the lengths I26 of the clamping jaws is 26 380 mm. A diameter D24 of the support pin 24 is larger than 140 mm, in particular it is between 145 mm and 155 mm. A diameter D24 between 148 mm and 152 mm is particularly advantageous.

5 shows a material roll 06 lying in the two receptacles 05; 07 with a sleeve 10, as is preferably used in the reel changer described.

A length HO of the sleeve 10 of the material roll 06; 07, which rests on the clamping jaws 26 of the trunnion 24, more than 4000 mm, in particular more than 4200 mm. A wall thickness b10 of the sleeve 10 is more than 10 mm, in particular it is greater than 15 mm. A sleeve wall thickness b10 greater than 17 mm, in particular greater than 20 mm, is particularly advantageous. An inner diameter d10 of the sleeve 10 is 150.2 + 0.2 mm. As an alternative or in support of the measures for reducing the free clamping length of the material roll, the web speed and / or the residual roll diameter can also be determined during the flying roll change in order to carry out the flying roll change.

As already described, a first material web of a material roll 06; 02, which runs at a first web speed, is connected to a second material web 29 of a new material roll 07, which runs at a second web speed. Before connecting the first material web 02 to the second material web 29, the first web speed is reduced to a second web speed, so that the first material web 02 has the second web speed during the connection.

It is also possible to connect the material webs 02; 29 a minimum diameter of the residual roll 06 as a function of a width b02 of the material web 02; 29, which determines when the two material webs 02; 29 can be connected to each other at the latest.

In another embodiment, the second web speed, which is predetermined during the connection, is dependent on the material properties of the sleeve 10 of a material roll 06; 07 set.

Geometric dimensions that the sleeve 10 of the material roll 06; 07 concern, e.g. B. In other embodiments, the size of the inner diameter d10 of the sleeve 10 or the wall thickness b10 of the sleeve 10 determine the reduced web speed of the first material roll 02 during the connection.

In a further embodiment, the second path speed predetermined during the connection is determined, in particular, by the geometric dimension of the receptacle 10 of the trunnion 24. The reduced path speed can also be determined as a function of the length I26 of the clamping jaws 26 of the trunnion 26.

The reduction of the web speed is controlled together with the connection process by a program.

The roller carrier 04 is equipped with the material roller 06 by means of a sliding carriage 31, for. B. a scissor lift table 31, as shown in Figures 6 and 7. Wheels 33 are attached to the sliding carriage 31, by means of which horizontal movement of the sliding carriage 31 is possible. Movement in height is also possible. A support device 11 with a support belt 12, which is pivotably attached to the scissor lift table 31, is arranged on the sliding carriage 31. This support device 11 is essentially the same support device 11 already described above. The support device 11 is motor-driven, e.g. B. by an AC motor that the support belt 12; 22 of the support device 11 accelerated to web speed and then applied to the expired roll of material 07 by hydraulics. The braking of the material roll 07 is also supported by this motor, since the motor of the support device 11, together with the axis motor of the roll stand 04, brakes along the same torque curve until the remaining roll 07 comes to a standstill.

The material roll 06 is transported to the roll changer 01 by means of a chain-pulled trolley 32. There, the trolley 32 with the material roll 06 mounted thereon moves into the sliding carriage 31 at ground level. Wheels 34 are attached to the trolley 32 and allow the trolley to move within the scissor lift table 31. The scissor lift table 31 moves into a centering position and raises the material roll 06 to approx. 1600 mm above the ground. The centered material roll 06 is then brought into the single-axis position of the roll stand 04. When the single-axis position is reached, the “Pinole to "the roller stand 04. The receptacles 05 with the support pins 24 are moved into the material roll 06. If the receptacles 05 with the support pins 24 are inserted into the material roll 06 and the clamping jaws 26 are spread, the scissor lift table is signaled with the signal" roll in " 31 lowered and moved to the home position.

During the roll change, the support device 11 moves to the running material roll 07 (support position) after the roll arm rotation and stabilizes it in the center. With the command “knife in front”, the running material web 29 is separated from the material roll 07 and stopped via the axis motor of the roll stand 04. As already described, the stopping process of the material roll 07 is supported by the support device 11 of the scissor lift table 31. The support belt 12 swivels the scissor lift table 31 moves into its loading position to load a new roll of material 07.

In the meantime, the sleeve 10 is removed from the residual roller 07 with a residual sleeve crane, in particular a clamp crane with trolley, and transported to a trolley for disposal.

A schematic view of the reel changer with different stages of reel supply is shown in FIG. 8.

LIST OF REFERENCE NUMBERS

01 reel changer

02 material web, first

03 swivel axis (04)

04 roll stand

05 holder, mandrel

06 Roll of material, expiring; residual role

07 Roll of material, new

08 support belt

09 foundation

10 sleeve, cardboard sleeve

11 support device

12 support belt

13 roll

14 actuating cylinders

15 -

16 reelstands

17 support device

18 support device

19 Linear guide 0 - 1 actuating cylinder 2 support belt 3 - 4 trunnions 5 - 6 clamping jaw 27 jaw series

28 jaw series

29 material web, second

30 -

31 pushcars, scissor lift table

32 trams

33 wheel (31)

34 wheel (32)

b02 Width of the material web b10 Wall thickness of the sleeve HO Length of the sleeve I24 Length of the trunnion I26 Length of the clamping jaw d10 Inner diameter of the sleeve

D24 diameter of the trunnion

Claims

Expectations

1. Roll changer for feeding a material web, in the receptacles (05) of which at least one running material roll (06) and at least one new material roll (07) prepared for the roll change are rotatably mounted, each material roll (06; 07) being supported by two receptacles (05) is held, each receptacle (05) having a supporting pin (24) with clamping jaws (26), characterized in that at least four clamping jaws (26) are arranged in the axial direction of the supporting pin (24).

2. Roll changer for feeding a material web, in the receptacles (05) of which at least one running material roll (06) and at least one new material roll (07) prepared for the roll change are rotatably mounted, each material roll (06; 07) being supported by two receptacles (05) is held, each receptacle (05) having a support pin (24) with clamping jaws (26), characterized in that a length (I24) of the support pin (24) in the axial direction of the support pin (24) is at least 250 mm.

3. Roll changer for feeding a material web, in the receptacles (05) of which at least one running material roll (06) and at least one new material roll (07) prepared for the roll change are rotatably mounted, each material roll (06; 07) being supported by two receptacles (05) is held, each receptacle (05) having a supporting pin (24) with clamping jaws (26), characterized in that a sum of the lengths (I26) of the clamping jaws (26) in the axial direction of the supporting pin (24) is at least 300 mm.

4. Roll changer for feeding a material web, in the receptacles (05) of which at least one running material roll (06) and at least one new material roll (07) prepared for the roll change are rotatably mounted, each Roll of material (06; 07) is held by two receptacles (05), each receptacle (05) having a support pin (24) with clamping jaws (26), characterized in that each receptacle (05) has a support pin (24) in an axial direction Direction of the support pin (24) has at least two clamping jaws (26) arranged one behind the other.

5. reel changer according to claim 2, 3 or 4, characterized in that at least four clamping jaws (26) are arranged in the axial direction of the support pin (24).

6. reel changer according to claim 1, 3 or 4, characterized in that a length (I24) of the support pin (24) in the axial direction is at least 250 mm.

7. reel changer according to claim 1, 2 or 4, characterized in that a sum of the lengths (I24) of the clamping jaws (26) in the axial direction of the support pin (24) is at least 300 mm.

8. Reel changer according to claim 1, 2 or 3, characterized in that each receptacle (05) has a supporting pin (24) with at least two clamping jaws (26) arranged one behind the other in the axial direction of the supporting pin (24).

9. reel changer according to claim 1, 2, 3 or 4, characterized in that a length (I24) of the support pin (24) in the axial direction of the support pin (24) is at least 300 mm.

10. reel changer according to claim 1, 2, 3 or 4, characterized in that a length (I24) of the support pin (24) in the axial direction of the support pin (24) is at least 330 mm.

11. reel changer according to claim 1, 2, 3 or 4, characterized in that a The length (126) of the clamping jaws (26) in the axial direction of the trunnion (24) is at least 80 mm.

12. reel changer according to claim 1, 2, 3 or 4, characterized in that a length (I26) of the clamping jaws (26) in the axial direction of the support pin (24) is at least 95 mm.

13. reel changer according to claim 1, 2, 3 or 4, characterized in that a sum of the length (I26) of the clamping jaws (26) in the axial direction of the support pin (24) is at least 340 mm.

14. reel changer according to claim 1, 2, 3 or 4, characterized in that a sum of the length (I26) of the clamping jaws (26) in the axial direction of the support pin (24) is at least 380 mm.

15. reel changer according to claim 1, 2, 3 or 4, characterized in that a plurality of jaws (26) adjacent to each other in a row of jaws (27, 28), in particular evenly spaced, are distributed over the circumference of the support pin (24).

16. Reel changer according to claim 1, 2, 3 or 4, characterized in that the clamping jaws (26) arranged one behind the other are aligned.

17. reel changer according to claim 1, 2, 3 or 4, characterized in that at least two annularly arranged rows of clamping jaws (27; 28) are provided.

18. reel changer according to claim 1, 2, 3 or 4, characterized in that the clamping jaws (26) receive a sleeve (10).

19. Use of a sleeve (10) in a reel changer according to claim 18, characterized in that the length (HO) of the sleeve (10) is greater than 4000 mm.

20. Use of a sleeve (10) in a reel changer according to claim 18, characterized in that the length (HO) of the sleeve (10) is greater than 4200 mm.

21. Use of a sleeve (10) in a reel changer according to claim 18, characterized in that a wall thickness (b10) of the sleeve (10) is greater than 10 mm.

22. Use of a sleeve (10) in a reel changer according to claim 18, characterized in that a wall thickness (b10) of the sleeve (10) is greater than 15 mm.

23. Use of a sleeve (10) in a reel changer according to claim 18, characterized in that the wall thickness (b10) of the sleeve (10) is greater than 17 mm.

24. Use of a sleeve (10) in a reel changer according to claim 18, characterized in that a wall thickness (b10) of the sleeve (10) is greater than 20 mm.

25. Use of a sleeve (10) in a reel changer according to claim 1, 2, 3 or 4, characterized in that an inner diameter (d10) of the sleeve (10) is in particular 150.2 + 0.2 mm.

26. Use of a roll changer according to claim 1, 2, 3 or 4, characterized in that the material web (02) drawn into the printing press can be unwound from the running material roll (06), and with the roll changer (01; 16) a flying one Role change between the running material roll (06) and the new material roll (07) can be carried out.

27. reel changer according to claim 1, 2, 3 or 4, characterized in that a diameter (D24) of the support pin (24) is greater than 140 mm.

28. Reel changer according to claim 1, 2, 3 or 4, characterized in that a diameter (D24) of the trunnion (24) is between 145 mm and 155 mm.

29. Reel changer according to claim 1, 2, 3 or 4, characterized in that a diameter (D24) of the support pin (24) is between 148 mm and 152 mm.

30. reel changer according to claim 1, 2, 3, 4 or 26, characterized in that a support device (11; 17; 18) is provided on or in the reel changer (01; 16), which at least when the running material reel (06) is arranged is arranged in the position provided for the flying roll change on the peripheral surface of the running material roll (06).

31. Reel changer according to claim 30, characterized in that the support device (11; 17; 18) has at least one circumferentially mounted support belt (12; 22) which is pressed onto the peripheral surface of the running material roll (06).

32. reel changer according to claim 31, characterized in that the support belt (12; 22) is mounted on rollers (13).

33. reel changer according to one of claims 30 to 32, characterized in that a plurality of support devices (11; 17; 18) are provided on the reel changer (01; 16), which are arranged adjacent to one another and spaced apart from one another on the circumferential surface of the running material reel (06) ,

34. reel changer according to one of claims 30 to 33, characterized in that the support device (11) is driven by the transmission of frictional forces from the running material roll (06).

35. reel changer according to one of claims 30 to 33, characterized in that on the support device (17; 18) a drive device, in particular an electric motor, is provided with which the support device (17; 18) is driven.

36. reel changer according to claim 35, characterized in that the support device (17; 18) is driven at a speed synchronized with the peripheral speed of the running material roll (06).

37. reel changer according to one of claims 30 to 36, characterized in that the support device (11; 17; 18) is movably mounted between at least two functional positions, the support device (11; 17; 18) in the first functional positions on the peripheral surface of the running material roll (06) comes to rest, and wherein the support device (11; 17; 18) assumes a rest position in the second functional positions and does not come to rest on the peripheral surface of the running material roll (06).

38. reel changer according to one of claims 30 to 37, characterized in that the support device (17; 18) on the reel stand (04) of the reel changer (16) is attached.

39. Reel changer according to claim 38, characterized in that on the swiveling reel stand (04) each material reel (06; 07) is assigned two lateral support arms, at least one support device (17; 18) being fastened between each two support arms.

40. reel changer according to one of claims 30 to 39, characterized in that the support device (11) is attached to a foundation (09) below the position of the running material roll (06) intended for the flying roll change.

41. reel changer according to claim 40, characterized in that the support device (11) in the foundation (09) is retractable.

42. Reel changer according to one of claims 30 to 41, characterized in that at least one sensor for measuring a support process parameter, in particular the support force or belt tension of the support belt (08; 22), is provided on the support device (11; 17; 18).

43. Roll changer according to one of claims 30 to 42, characterized in that the roll changer (01; 16) is arranged upstream of a rotogravure printing press.

44. Method for operating a reel changer according to one of claims 1 to 43, characterized in that a support device (17; 18) in a first functional position of the swiveling reel stand (04) is placed on the peripheral surface of the running material reel (06), the reel stand (04) is pivoted into a second functional position which is suitable for the flying roll change of the running material roll (06), and a flying roll change is carried out from the running material roll (06) to the new material roll (07).

45. Method for carrying out a flying roll change according to claim 1, 2, 3 or 4, characterized in that a first material web (02) of a material roll (06) to be changed is connected to a second material web (29) of a new material roll (07) , wherein the material roll (06) to be changed runs at a first web speed that before the connection of the first Material web (02) with the second material web (29) the first web speed is reduced to a second web speed and that the first material web (02) is connected to the second material web (29) with this reduced web speed.

46. A method for performing a flying roll change according to claim 1, 2, 3 or 4, characterized in that a first material web (02) of a material roll (06) to be changed is connected to a second material web (29) of a new material roll (07) , The material roll (06) to be changed runs at a first web speed, that before the first material web (02) is connected to the second material web (29), a minimum diameter of the remaining roll (06) as a function of a width (b02) of the material web ( 02; 29) and that the first material web (02) is connected to the second material web (29) at the latest when this minimum diameter of the residual roll (06) is reached.

47. Method for carrying out a flying roll change, a first material web (02) of a material roll (06) to be changed being connected to a second material web (29) of a new material roll (07), the material roll (06) to be changed being connected to a first Web speed runs, characterized in that before the first material web (02) is connected to the second material web (29), the first web speed is reduced to a second web speed and that the first material web (02) with this reduced web speed with the second material web (29 ) is connected.

48. Method for carrying out a flying roll change, a first material web (02) of a material roll (06) to be changed being connected to a second material web (29) of a new material roll (07), the material roll (06) to be changed being connected to a first Web speed runs through it characterized in that before connecting the first material web (02) to the second material web (29) a minimum diameter of the remaining roll (06) is determined as a function of a width (b02) of the material web (02; 29) and that at the latest when this minimum diameter is reached the remaining roll (06) the first material web (02) is connected to the second material web (29).

49. The method according to claim 45 or 47, characterized in that before connecting the first material web (02) to the second material web (29) a minimum diameter of the remaining roll (06) during the connection as a function of a web speed of the first material web (02) is specified and this minimum diameter is not fallen below during the connection.

50. The method according to claim 45 or 47, characterized in that before connecting the first material web (02) to the second material web (29), a minimum diameter of the remaining roll (06) during the connection as a function of a width (b02) of the material web ( 02; 29) is determined.

51. The method according to claim 46 or 48, characterized in that before connecting the first material web (02) to the second material web (29), the first web speed is reduced to a second web speed and that the first material web (02) with this reduced web speed is connected to the second material web (29).

52. The method according to claim 45, 47 or 51, characterized in that the reduction of the web speed is controlled together with the connection process via a program.

53. The method according to claim 45, 47 or 51, characterized in that the second web speed predetermined during the connection as a function of a Width (b02) of the material web (02; 29) is determined.

54. The method according to claim 45, 47 or 51, characterized in that the second web speed predetermined during the connection is determined as a function of material properties of a sleeve (10) of the material roll (06; 07).

55. The method according to claim 45, 47 or 51, characterized in that the second web speed predetermined during the connection is determined as a function of the geometric dimensions of a sleeve (10) of the material roll (06; 07).

56. The method according to claim 55, characterized in that the second web speed predetermined during the connection is determined as a function of an inner diameter (id10) of a sleeve (10) of the material roll (06; 07).

57. The method according to claim 55, characterized in that the second web speed predetermined during the connection is determined as a function of a wall thickness (b10) of a sleeve (10) of the material roll (06; 07).

58. The method according to claim 45, 47 or 51, characterized in that the second web speed predetermined during the connection is determined as a function of geometric dimensions of a receptacle (05) of a roll changer for receiving (05) the material roll (06; 07).

59. The method according to claim 58, characterized in that the second web speed predetermined during the connection as a function of lengths (I26) of clamping jaws (26) of the receptacle (05) of a roll changer for receiving (05) the material roll (06; 07) is set.