Apparatus and method for disposing of the remainder of a material web in a roll cutting machine

Abstract

The invention relates to a machine (1) and a method for winding and wrapping a material web (M) and / or partial material webs, preferably a paper web, a cardboard web, or a tissue web, wherein the machine comprises an unwinding device (2), preferably a longitudinal cutting device (3), and a winding device, and wherein the unwinding device unwinds the material web from at least one parent roll (20.1) wound on a winding core (22.1, 22.2), and wherein the unwinding device comprises a first drivable unwinding position (2.1) for a full parent roll (20.1) and a second drivable unwinding position (2.2) for a partially full parent roll (20.2), which comes after the first unwinding position in the machine running direction, and wherein the winding device winds the material web or the material partial webs onto at least one winding sleeve (44) to form at least one winding roll (40), and wherein the at least one winding roll is supported and can be driven by a first (41) and a second (42) support roller, and wherein a disposal apparatus (10) is included which is suitable such that, after the partially full parent roll (20.2) has been unwound to form a remainder parent roll (20.3), a remainder of the material web (RM0) remaining on the winding core is disposed of from the winding core of the remainder parent roll into a pulper opening (88). According to the invention, the disposal apparatus (10) comprises at least one comminution apparatus (11, 12, 13) upstream of the disposal of the remainder of the material web (RM0) into the pulper opening (88), which opening is preferably arranged laterally to the unwinding device in the transverse direction (CD).

Description

[0001] Device and method for disposing of a residual material web in a roll slitting machine

[0002] The invention relates to a machine and a method for winding and rewinding a web of material and / or material sub-webs, preferably a paper web, a cardboard web or a tissue web, wherein the machine comprises an unwinding unit, preferably a longitudinal slitting device, and a winding unit, wherein the unwinding unit unwinds the web of material from at least one parent roll wound on a core, wherein the unwinding unit comprises a first driveable unwinding position for a full parent roll and a second driveable unwinding position for a partially full parent roll, which follows the first unwinding position in the machine direction, wherein the winding unit winds the web of material or the material sub-webs onto at least one core to form at least one winding roll, wherein the at least one winding roll is supported and driveable by a first and a second support roller, and wherein a disposal device is included.which is suitable so that, after the partial unwinding of the full mother roll to a residual mother roll, any remaining material web on the winding core is disposed of from the winding core of the residual mother roll into a pulper opening.

[0003] The invention also relates to a disposal device for use in a corresponding machine.

[0004] The invention is explained below in connection with the treatment of a paper web. However, it is also applicable to other material webs that are handled similarly. These include, but are not limited to, fibrous webs made of paper, cardboard, corrugated board, or tissue.

[0005] Paper webs are produced in relatively large widths of up to over 11 meters on a paper machine. Production is virtually continuous. The direction of travel of the paper machine defines the longitudinal direction for all machines and equipment in the paper mill, and the transverse direction is defined perpendicular to it in the horizontal plane. At the end of the paper machine, the produced paper web is wound in its full width onto a core, in what is called the reel. This core is replaced cyclically, usually while production is ongoing. The resulting web-width reel is commonly referred to as a master reel or full reel and, depending on the paper grade, can hold several hours' worth of paper machine production. This master reel can reach a very high weight, from several dozen tons up to a maximum of 150 tons per reel.Handling such a heavy mother roll poses a particular challenge to the equipment used, compared to significantly smaller winding rolls.

[0006] To be manageable for a later user, such as a printing company or a converter, the paper web wound on a master roll must be cut into several parallel sections, the widths of which are suitable for the respective end user. These widths can vary considerably, so the division of the paper web is usually carried out according to a custom-defined cutting pattern.

[0007] The partial webs are then wound onto smaller rolls compared to the master roll. These are called partial web or finished rolls and are issued together as a so-called roll batch. The cutting pattern can be changed from roll batch to roll batch. Slitting and winding are conveniently performed in a single machine, which is then often referred to as a roll slitting machine.

[0008] All the winding devices described above, i.e., those for producing parent rolls as well as those for producing partial or finished rolls, have in common that the web to be wound to form a winding roll creates a winding gap with at least one winding roller against which it is supported or rests, and which is accordingly referred to as a support or carrying roller. These winding rollers, which are in direct contact with the forming winding rolls, thus also represent the directly acting tools by which the winding quality can be influenced. The parent roll and / or the winding roll are driven either directly via drive devices that can be connected to the rolls or indirectly via rollers.

[0009] The described winding machine at the end of a paper machine and the roll slitting machine usually differ in their production speeds. The winding machine at the end of a paper machine is linked to the production speed of the paper machine, i.e., it is usually operated below 2000 m / min. For a roll slitting machine, an "off-line" arrangement is very often advantageous; this means that the roll slitting machine can be operated independently and production speeds of well over 2000 m / min up to 3600 m / min can be achieved.

[0010] Document EP 1 798 172 A2 discloses a device for unwinding and subsequently cutting a web of material in the longitudinal direction. The device comprises two unwinding positions with two drive devices for a mother roll, wherein the mother roll is displaceable between the two unwinding positions depending on the amount of material already unwound. The drive devices are also displaceably arranged and can preferably be of different sizes, since in the second unwinding position only a reduced torque is required due to the already partially unwound mother roll. The drives are positioned and switched on the mother roll in such a way that the mother roll is driven by only a single drive during operation. This double unwinding advantageously results in an increase in the utilization and efficiency of the device.

[0011] Due to the process, when unwinding a parent roll, not all of the material web present on the core can be used; an unused, unwound residual web remains on the core. Documents EP 1 997 755 A1 and EP 4 005 956 A1 disclose devices and methods for removing or slabbing off the residual web remaining on the core after unwinding a material web. This is achieved, for example, by an additional movement of the parent roll from the actual unwinding position to an additional slabbing position in order to dispose of the residual web there into an existing pulper opening, which is typically the width of the machine.

[0012] The aforementioned solutions have a number of disadvantages.

[0013] The object of the invention is to improve a double unwinding of a roll slitting machine in such a way that a further increase in production times or a reduction in the necessary downtime between the parent roll changes can be made possible.

[0014] Another aspect of the invention is to increase the safety of the operating personnel on a roll slitting machine, since the machine-wide pulper openings located on the floor pose an increased risk of accidents.

[0015] The object of the invention is achieved by a disposal device, a machine, and a method according to the independent claims. Further advantageous embodiments of the present invention are found in the dependent claims.

[0016] The machine according to the invention is characterized in that the disposal device comprises at least one shredding device prior to disposal into the pulper opening, which is preferably arranged laterally (CD) to the unwinding direction.

[0017] Advantageously, the residual material web RMO is shredded into a pulper opening, preferably arranged laterally to the unwinding, for easier transport.

[0018] Preferably, the pulper opening is arranged laterally to the unwinding direction, meaning that when a full or partially full parent roll is unwound, the opening for the running web is located next to the moving material web in the transverse direction CD. This is particularly advantageous for operator safety, as a conventional web-width pulper opening extending in the transverse direction CD poses a greater risk of falling and is closed during operation by a complex web-width flap mechanism.

[0019] Furthermore, the lateral arrangement allows the pulper opening to be positioned alternatively and advantageously above the machine level ME. This means that, due to its limited dimensions, the pulper opening can only be permanently secured against accidental falls by a safety fence in the area of ​​the disposal device. A closing mechanism can also be provided, which is significantly easier to design and operate.

[0020] In an alternative embodiment, the machine is characterized by the fact that the residual mother roller can be driven in the second unwinding position during the unwinding of the residual material web.

[0021] Advantageously, by directly arranging the disposal device at the second unwinding position, the residual material web can be removed directly in and using the second unwinding position and driven by its drive, which makes it possible to do without a separate position with additional equipment.

[0022] In an alternative embodiment, the machine is characterized in that the at least one shredding device comprises a cross-cutting device such that the residual material web is shredded into residual material cross strips.

[0023] Advantageously, the cross-cutting device can shred the residual material web into cross strips, which makes it possible to form cross strips with a width RM2 limited in the machine direction MD, thus further reducing the dimensions of the downstream transport device. In an alternative embodiment, the machine is characterized in that the cross-cutting device is designed as a traversable cross-cutting device, preferably a waterjet cutting device or as a rotatable cross-cutting device, and that the rotatable cross-cutting device further comprises a pair of rollers, and that at least one knife roller comprises at least one, preferably up to ten, knives arranged in the transverse direction.

[0024] Advantageously, the cross-cutting device should include at least one cutting device in the transverse direction, which may be of different designs. If the cutting frequency is too low to achieve the smallest possible width of the remaining material cross-strips, the cutting device can be designed with multiple cutting devices, preferably with up to ten blades.

[0025] In an alternative embodiment, the machine is characterized in that the at least one shredding device comprises a longitudinal cutting device such that the residual material web is shredded into residual material partial webs.

[0026] Advantageously, the residual material web is further reduced into residual material sub-webs before shredding by a further shredding device such as a cross-cutting device and / or a shredder device, which can facilitate transport to the subsequent shredding device and transport across the machine.

[0027] Furthermore, it is advantageous that the residual material web can be shredded into easier-to-handle residual material sub-webs before a coreless miniature winding process that can be provided for in an alternative embodiment.

[0028] In an alternative embodiment, the machine is characterized in that the at least one shredding device comprises a shredding device such that the residual material web is shredded into residual material chips. Advantageously, the shredding device can shred the residual material web very finely into residual material chips that are very small in length and width and are therefore very easy to transport transversely out of the machine, which can further reduce the dimensions of the downstream transport device.

[0029] In an alternative embodiment, the machine is characterized in that the at least one shredding device comprises a longitudinal cutting device and a transverse cutting device, arranged such that the residual material web is first shredded into residual material partial webs by the longitudinal cutting device and that the residual material partial webs are then shredded a second time into residual material web transverse strips by the transverse cutting device.

[0030] In an alternative embodiment, the machine is characterized in that the disposal device comprises three shredding devices, which are arranged and designed in succession as follows: a longitudinal cutting device, a transverse cutting device and a shredder device, arranged such that the residual material web is first shredded into residual material partial webs by the longitudinal cutting device, and that the residual material partial webs are then shredded a second time into residual material web transverse strips by the transverse cutting device, and that the residual material transverse strips are then shredded a third time into residual material chips by the shredder device.

[0031] In an alternative embodiment, the machine is characterized in that the disposal device comprises at least one transport device arranged transversely downstream of the shredding device, preferably a conveyor belt and / or a transport chute and / or a transport channel, such that the transport device transports a residual material web shredded by the shredding device transversely out of the machine into a pulper opening arranged transversely to the side of the second unwinding position.

[0032] Advantageously, a transport device arranged in the transverse direction of CD can transport the shredded residual material web RMO transversely out of the machine; this has a positive effect on the possible operating time of the unwinding, since the path for the track L1 and L2 for the usual unwinding is not blocked by a disposal of the residual material web that would otherwise be the width of the web.

[0033] In an alternative embodiment, the machine is characterized in that the disposal device subsequently comprises a longitudinal cutting device, a transverse cutting device, a conveyor belt in the transverse direction, a shredder device, and a second transport device.

[0034] In an alternative embodiment, the machine is characterized in that the disposal device is designed as a miniature roll slitting machine and that the miniature roll slitting machine comprises a shredding device, preferably a longitudinal cutting device, and a coreless miniature winding unit, which is suitable for winding a residual material web into a coreless roll.

[0035] In an alternative embodiment, the machine is characterized in that the coreless miniature winding comprises at least one, preferably two, miniature support rollers that are movable in the machine direction, such that the coreless windings, after unwinding the remaining material web, fall onto a conveyor belt arranged below and in a transverse direction and are transported transversely out of the machine into a pulper opening arranged in a transverse direction to the side of the second unwinding position.

[0036] Advantageously, the remaining material web is wound into divided, coreless rolls by the miniature roll slitting machine, which, due to their limited length in the transverse direction of the CD, can be transported more easily by the following transport devices and disposed of more easily in the following pulper.

[0037] In an alternative embodiment, the machine is characterized by the fact that the disposal device is directly associated with the second unwinding position. Advantageously, the residual material web is disposed of directly in the second unwinding position, with the unwinding of a new parent roll starting anew in the first unwinding position.

[0038] In an alternative embodiment, the machine is characterized in that the disposal device is fixedly connectable to the second unwinding position, and that the disposal device comprises a platform and at least one platform support, and that the platform support is fixedly connectable to a bearing of the unwinding, preferably a bearing of the second unwinding position.

[0039] In an alternative embodiment, the machine is characterized in that the residual mother roll for disposing of the residual material web is driven by a second drive device of the second unwinding position.

[0040] The disposal device according to the invention for disposing of a residual material web from a residual core roll or on a winding core after unwinding in a machine for winding and rewinding a material web and / or material sub-webs, preferably a paper web, a cardboard web or a tissue web, preferably in a machine according to the invention, is characterized in that the disposal device comprises at least one comminution device, preferably a longitudinal cutting device, a transverse cutting device and / or a shredder device, before the disposal of the residual material web into a pulper opening, preferably arranged laterally in the transverse direction to the unwinding.

[0041] The method for winding and rewinding a material web and / or material sub-webs, preferably a paper web, a cardboard web or a tissue web, preferably in a machine according to the invention, wherein the material web is unwound in a development, preferably cut into material sub-webs in a longitudinal cutting device, and wound up in a development, wherein the material web is unwound from at least one driveable mother roll wound on a core, and wherein the material web is successively unwound from a full mother roll in a first unwinding position and from a partially full mother roll in a second unwinding position, and the partially full mother roll is unwound after reaching a predetermined size parameter, for example a predetermined unwinding time, a mother roll diameter, a drive torque, etc., is moved from the first unwinding position in the machine direction to the second unwinding position and, wherein the material web or material partial webs are wound onto at least one winding core to at least one winding roll and, wherein after unwinding the partial full mother roll to a residual mother roll, a remaining residual material web remains on the winding core of the residual mother roll and, wherein the residual material web is disposed of from the winding core of the residual mother roll into a pulper opening.

[0042] According to the invention, the method is characterized in that the residual material web from the residual mother roll is shredded by at least one shredding device, preferably a longitudinal cutting device, a transverse cutting device and / or a shredder device, and afterwards a shredded residual material web is disposed of in the pulper opening, which is preferably arranged laterally in the transverse direction to the unwinding.

[0043] Advantageously, the residual material web RMO is shredded for space-saving and easier transport and disposed of in a more compact design via a pulper opening arranged only laterally for unwinding.

[0044] In an alternative embodiment, the method is characterized in that the remaining material web is further unwound, at least partially or completely, preferably simultaneously, during the unwinding of a full parent roll in the first unwinding position.

[0045] Advantageously, the arrangement of the disposal device directly at the second unwinding position and the transport direction transversely out of the machine ensure that the normal running direction L1 and L2 for the unwinding of the material web M is free from any crossing by the running direction L3 of the residual material web RMO, RM1, RM2, RM3. This allows the machine to resume operation immediately after completion of the unwinding in the second unwinding position and joining of the new material web of the full parent roll with the joining device, while the disposal of the residual material web RM takes place.

[0046] The disposal of the residual material web RM can take place before or during the joining of the new material web M to the full parent roll.

[0047] In an alternative embodiment, the method is characterized in that the residual nut roll remains in the second unwinding position, such that the residual nut roll is driven during unwinding by a drive device of the second unwinding position.

[0048] Advantageously, by disposing of the residual material web directly from the second unwinding position, an additional movement or transport of the remaining core roll with additional equipment such as a lifting device can be avoided. This optimizes the entire winding and rewinding process and avoids a labor-intensive movement that not only requires operator supervision but also improves safety, as such movements are the most frequent source of risks and injuries to the life and health of the operating personnel.

[0049] In an alternative embodiment, the method is characterized by the fact that the residual material web is shredded two or three times before the shredded residual material web is disposed of in a pulper opening.

[0050] Advantageously, the residual material web is shredded into smaller pieces, which facilitates even easier transport from the disposal device. In an alternative embodiment, the method is characterized by the fact that, after at least one shredding step, the residual material web is transported transversely out of the machine in a transport device arranged in the transverse direction and into a pulper opening arranged transversely next to the machine.

[0051] The invention expressly extends to embodiments which are not given by combinations of features from explicit cross-references of the claims, whereby the disclosed features of the invention can be combined with one another — insofar as this is technically meaningful.

[0052] Corresponding elements of the embodiments shown in the figures are identified by the same reference numerals. The functions of such elements in the individual figures are identical unless otherwise described and provided this does not lead to contradictions. Therefore, a repeated description is omitted.

[0053] It should also be noted that the differing features of the illustrated embodiments can be interchanged and combined. The invention is therefore not limited to the combinations of features shown in the illustrated embodiments.

[0054] Further features and advantages of the invention will become apparent from the following description of preferred embodiments with reference to the drawings.

[0055] The invention will be explained below with reference to the following figures.

[0056] Figures 1a and 1b show a top view and a side view of a roll slitting machine 1 corresponding to the prior art with two unwinding positions 2.1, 2.2 in a unfolding 2 during unwinding from the unwinding position 2; Figures 2a and 2b show a top view and a side view of a roll slitting machine 1 with two unwinding positions 2.1, 2.2 in a unfolding 2 during unwinding from the unwinding position 2 before operation of the disposal device 10 according to the invention;

[0057] Figures 3a and 3b show a top view and a side view. Figures 2a and 2b show the disposal device 10 according to the invention in operation.

[0058] Figures 4a and 4b show a top view and a side view. Figures 2a and 2b show an alternative embodiment of the disposal device 10 according to the invention.

[0059] The figures are shown in a common coordinate system, where MD is the machine direction or the main direction of movement of the material web, CD is the transverse direction of the material web or the machine, and z is the third axis in a right-handed coordinate system.

[0060] Furthermore, an imaginary machine level ME is shown, which represents an MD-CD level where the operating personnel are usually located during disposal.

[0061] Figures 1a and 1b show a schematic and simplified representation of a machine 1 for winding and rewinding a material web M or several material webs M, which corresponds to the prior art. The material web M is unwound from a master roll 20.1, 20.2 or a full drum 20.1, 20.2 by an unwinding device 2 or unwinding unit 2. The material web M is wound in several layers onto a core 22.1, 22.2 and thus forms the master roll 20.1, 20.2. During unwinding, the diameter of the master roll 20.1, 20.2 decreases successively until the unwinding or production must be stopped and the unwound master roll 20.1, 20.2 is replaced by a new, full master roll 20 or the wound-up at least one winding roll 40 in the winding unit 4 is replaced.

[0062] The illustrated embodiment of the unwinding process 2 advantageously further comprises two unwinding positions 2.1, 2.2 or a double unwinding process, a first unwinding position 2.1 and a second unwinding position 2.2, which are arranged sequentially in the machine direction MD. Both unwinding positions are suitable for unwinding a full 20.1 and / or a partially full mother roll 20.2.

[0063] The first unwinding position 2.1 is preceded, contrary to the machine direction MD, by a (not shown) mother roll magazine in which further full mother rolls 20.1 await unwinding. The usual main direction of movement of the mother rolls, as well as the material web M, is from left to right in the machine direction MD.

[0064] A typical, simplified double unwinding process consists of changing and connecting the material web M of the full parent roll 20.1 with a connecting device 7, or, in the case of a new production start, threading the material web M from the full parent roll 20.1 to the winding cores 44 in the first unwinding position 2.1. The full parent roll 20.1 in the first unwinding position 2.1 is then accelerated to production speed by a first drive device 24 and continues to unwind at production speed. This is followed by braking or deceleration to a standstill to change the winding cores 40. The process of acceleration, production speed, and deceleration can then be repeated several times, the number of repetitions depending on the material web type and the desired diameter of the winding cores 40.Double unwinding is characterized by the fact that, upon reaching a predetermined parameter, for example, a fixed number of winding roll changes 40, a predetermined reduced diameter of the partially filled mother roll 20.2, or upon falling below a required torque of the first drive device 24, a shift of the partially filled mother roll 20.2, which was unwound from a full mother roll 20.1 to a partially filled mother roll 20.2 in the unwinding position 2.1, is initiated. The partially filled mother roll 20.2 is moved to the second unwinding position 2.2 while the material web M is stationary in the machine direction MD. This is typically accomplished with an engaged drive device 24 to maintain web tension of the material web M. The drive device 24 can either be engaged in the first unwinding position 2.1 and then moved to the second unwinding position 2.2.2 can be moved and returned empty, i.e. without the coupled mother roller, or the drive device 24 can be moved empty from the second unwinding position 2.2 to the first unwinding position 2.1 and coupled with the partially full mother roller 20.2 in the first unwinding position 2.1, and the drive device 24 from the second unwinding position 2.2 can be moved back to the second unwinding position 2.2 with the coupled mother roller 20.2.

[0065] Once the partially filled mother roll 20.2 has been moved to the second unwinding position 2.2, the acceleration, production, and braking process described above begins again from unwinding position 2.2. This is repeated until the end of the material web M on the partially filled mother roll 20.2 is reached, leaving a certain portion of residual material web RM0 on the so-called residual mother roll 20.3. This residual material web is typically determined by similar parameters as during the change from the first to the second unwinding position and can comprise a few centimeters to several centimeters of material web layers on the winding core 20.2.

[0066] Simultaneously or in parallel with the ongoing unwinding in the second unwinding position 2.2, a new, full mother roll 20.1 is moved from the upstream mother roll magazine into the first unwinding position 2.1 and coupled to the first drive device 24. Once the unwinding in the second unwinding position 2.2 is complete as described above, the full mother roll 20.1 is reconnected to the previous material web M by the connecting device 7, and the entire process begins again.

[0067] Typically, and in accordance with the state of the art, the residual mother roll 20.3 is lifted from the second unwinding position by a lifting device (not shown) and moved to a position near or upstream of the machine direction MD for disposal of the residual material web RM0. This position is usually located above a pulper opening 88, which extends across the entire width of the web in the transverse direction CD.

[0068] This pulper opening 88 is usually located below the machine level ME to avoid obstructing the material flow. The lifting process typically interrupts or crosses the normal material flow in the machine direction MD and requires additional monitoring and interaction by the operator, which, in addition to the economic aspects, can pose a significant risk to the operator's life and limb.

[0069] The transient operating conditions with high deceleration values, in particular, pose a challenge for the entire device due to the high masses involved. However, rapid acceleration and deceleration are desirable, as this offers significant potential for productivity gains. The goal is to accelerate the mother rollers, weighing up to 150 tons, to speeds of up to 3600 m / min within less than 30 seconds, preferably less than 15 seconds. This requires a special design for the equipment used.

[0070] The mother rollers 20.1, 20.2 with corresponding winding cores 22.1, 22.2 are interchangeably and slidably mounted in the unfolding 2 on a common winding core bearing 28. The winding cores 22.1 and 22.2 are connectable to the first and second drive devices 24 included in the unfolding 2, which are suitable for driving the winding cores 22.1, 22.2 and the mother rollers 20.1, 20.2.

[0071] The first and second drive devices 24 can each be slidably mounted via their own drive bearing 28. In an alternative arrangement, the first and second drive devices 24 can also be mounted via the bearing 28 of the winding cores 22.

[0072] The first and second drive devices 24 are engaged only during the transfer from the first unwinding position 2.1 to the second unwinding position on the same winding core 22.1, 22.2. Each drive device 24 enables the transmission and adjustment of the torques and / or speeds requested by a control device to the mother roll during the operating states of acceleration, production, and braking.

[0073] The double winding also makes it advantageous to dimension the second drive device smaller, which can reduce the masses to be moved and also the investment costs during a movement. The first and second drive devices 24 can be connected directly or indirectly to the winding core 22.

[0074] Typically, the winding core 22 comprises a coupling element 26, preferably in the form of an internal toothing, for creating a positive connection with the drive device 24 or the drive train.

[0075] The first and second drive device 24 can be connected directly, preferably without further translations and connecting devices, to the coupling elements 26 arranged on both sides of the winding core 22 in a direct version of the connection.

[0076] The first and second drive device 24 can be connected to the winding core 22 in an indirect design via a gearbox.

[0077] The first and second drive device 24 can be connected to the winding core 22 in a further indirect version via an angle gear, wherein the drive axis of the drive device 24 is arranged offset from each other with the winding core axis 22.

[0078] The first and second drive devices 24 can each include a mechanical braking device, which makes it possible to support the drive devices 24 in an emergency stop and to reduce the holding time to a minimum.

[0079] In an alternative embodiment, the material web M coming from the mother roll 20 is cut into several material sub-webs M in a longitudinal cutting device 3 and conveyed further.

[0080] The material web M or material webs M move in a direction L, which is indicated by directional arrows. The material web M is guided from the parent roll over at least one deflecting roller 5 and deflected. Subsequently, the material web M is guided over at least one spreading device 6 to a first support roller 41 and over this, and wound onto at least one winding core to form at least one winding roll 40. The winding roll 40 is supported and driven by the first support roller 41 and a second support roller 42, forming at least one winding gap. In the illustrated case, the material web M is cut into five material webs and wound onto five winding cores to form five winding rolls 40. Winding can be performed with at least one winding roll 40 up to any number of winding rolls 40.

[0081] Figures 2a and 2b show the double unwinding described in Figures 1a and 1b with an embodiment of an improved disposal device 10 according to the invention. The disposal device 10 is not in its operating position here, but the unwinding of the partially full mother roll 20.2 is still taking place in the unwinding position 2.2.

[0082] The disposal device 10 comprises at least one shredding device 11, 12, 13 for shredding the residual material web RM0 from the residual mother roll 20.3.

[0083] In an alternative embodiment shown here, the disposal device 10 can comprise up to three shredding devices 11, 12, 13.

[0084] In the illustrated embodiment, a longitudinal cutting device 11 and / or a transverse cutting device 12 and / or a shredding device 13 is included.

[0085] The disposal device 10 further comprises at least one transport device 15, 17 arranged transversely to CD, which transports the shredded residual material web RM0, RM1, RM2, RM3 to the next shredding device and / or finally to a laterally arranged pulper opening 88. The transport device can be designed, for example, as a continuous conveyor belt 15 in the transverse direction to CD and / or as a transport chute 17 and / or as a transport channel 17. In the case of a transport chute 17, it is advantageous to utilize the weight of the shredded material web RM by means of a corresponding incline. In the case of a transport channel 17, it may be advantageous to utilize additionally introduced air for transport. The disposal device 10 is assigned to the second unwinding position 2.2 and is arranged in the z-direction at the level of the unwinding position via a platform 18 or a housing 18.Preferably, the platform 18 of the disposal device can be firmly connected to the bearing 28 of the winding cores 22.1 , 22.2 and / or the bearing 28 of the drive devices 24 via at least one, preferably two, platform support(s) 19.

[0086] Furthermore, in the development 2, a laterally arranged pulper opening 88 for the discharge of the residual material web RM into a pulper is arranged and shown.

[0087] The modified pulper opening 88 extends in the machine direction MD to essentially the same position as the disposal device 10.

[0088] The pulper opening 88 can also be positioned above the machine level ME and secured against unintentional access. Furthermore, the pulper opening 88 can optionally be closed by a locking device.

[0089] Figures 3a and 3b show the embodiment from Figures 2a and 2b, wherein the disposal device 10 is in operation and the unwinding of the partially full mother roll 20.2 in the second unwinding position 2.2 to a residual mother roll 20.3 has taken place.

[0090] In this process, the residual material web RM0 was separated from the residual mother roll 20.3 from its usual track L2 and automatically transferred to the new track L3 to the disposal device 10 via a transfer device (not shown) and a control of the drive device 24 of the second unwinding position 2.2.

[0091] The residual nut roll 20.3 is free from any movement or displacement from the second unwinding position 2.2 and remains coupled to the drive device 24. This allows disposal to begin immediately after unwinding is complete.

[0092] The residual material web RM0 from the residual mother roll 20.3 is shredded by at least one shredding device 11 , 12 , 13.

[0093] A combination of up to three shredding devices 11, 12, 13 simultaneously or in any combination is conceivable. For one shredding device, a design as a cross-cutting device 12 or a shredder device 13 is advantageous.

[0094] For example, in combinations of comminution devices, an arrangement with a preceding longitudinal cutting device 11 and a subsequent transverse cutting device 12 or a subsequent shredder device 13 is preferred.

[0095] For example, in combinations of comminution devices, an arrangement with a preceding longitudinal cutting device 11 and a subsequent transverse cutting device 12 and a subsequent shredder device 13 is also preferred.

[0096] In this process, a longitudinal cutting device 11 cuts the residual material web RMO into residual material partial webs RM1, a transverse cutting device 12 cuts the residual material web RMO into residual material transverse strips RM2 or the residual material partial webs RM1 into residual material partial transverse strips RM2, and a shredding device 13 cuts the residual material web RMO or the residual material partial webs RM1 or the residual material transverse strips RM2 or the residual material partial transverse strips RM2 into residual material chips RM3.

[0097] For an arrangement shown and a limitation of the dimension in the machine direction MD of the disposal device 10, a comminution of the residual material web RMO in the machine direction MD is advantageous; this can be achieved very easily by a shredder device 13 or a cross-cutting device 12.

[0098] Where, after shredding, the shredded residual material web RM1 , RM2 , RM3 is transported from the material web in the transverse direction CD before the shredded residual material web is directed into the pulper opening 88.

[0099] Figures 4a and 4b show an alternative embodiment of Figures 3a and 3b. In this embodiment, the disposal device 10 is designed as a miniature roll slitting machine, comprising a shredding device 11 or a longitudinal slitting device 11 and a coreless miniature winding unit 14.

[0100] This arrangement advantageously makes it possible to form sleeveless winding rolls RM5 of the residual material web RMO in the transverse direction CD, which are then transported in the transverse direction CD to the laterally arranged pulper opening.

[0101] In this embodiment, it is advantageous that at least one, preferably two, of the miniature support rollers included in the coreless miniature winding unit 14 are displaceable in the machine direction MD, so that the coreless winding rolls RM5 can be conveyed onto a transport belt 15 arranged below, in the transverse direction CD, and the coreless winding rolls RM5 are then transported further into the laterally arranged pulper opening 88.

[0102] Reference symbol list

[0103] 1 machine

[0104] 2. Processing with two processing positions

[0105] 2.1 First processing position

[0106] 2.2 second processing position

[0107] 3 Longitudinal cutting device

[0108] 4 winding

[0109] 5 deflection roller(s)

[0110] 6 Spreading device

[0111] 7 Adhesive device for joining a material web

[0112] 10 Disposal device

[0113] 11. Shredding device (longitudinal cutting device)

[0114] 12. Shredding device (cross-cutting device)

[0115] 13 shredding device (shredding device)

[0116] 14 Coreless Miniature Windings

[0117] 15 Transport device, conveyor belt in CD direction 17 Transport device, conveyor belt in CD, transport chute or transport channel

[0118] 18 Platform

[0119] 19 platform support(s)

[0120] 20.1 Mother roller in unwinding position 1

[0121] 22.1 Winding core in unwinding position 1

[0122] 20.2 Mother roller in unwinding position 2

[0123] 22.2 Winding core in unwinding position 2

[0124] 24 Drive device

[0125] 26 Coupling device

[0126] 28 Storage

[0127] 40 winding rolls

[0128] 41 first support roller

[0129] 42 second support roller

[0130] 44 winding sleeve

[0131] 88 Pulper opening

[0132] M Material track

[0133] ME machine level

[0134] L1 Direction of travel of material web from unwinding position 1

[0135] L2 Direction of travel of material web from unwinding position 2

[0136] L3 Direction of travel of residual material web from unwinding position 2

[0137] RM0 residual material web directly from residual mother roll

[0138] RM1 residual material web shredded, as residual material partial webs in MD

[0139] RM2 residual material web shredded, as residual material web transverse strips in CD

[0140] RM3 residual material web shredded, as residual material web snippets

[0141] MD Machine direction of travel

[0142] CD transverse direction

[0143] Z coordinates

Claims

Claims 1. Machine (1) for winding and rewinding a material web (M) and / or material partial webs (M), preferably a paper web, a cardboard web or a tissue web, wherein the machine (1) comprises an unwinding unit (2), preferably a longitudinal slitting unit (3), and a winding unit (4), and wherein the unwinding unit (2) unwinds the material web (M) from at least one parent roll (20.1, 20.2) wound on a winding core (22.1, 22.2), and wherein the unwinding unit (2) comprises a first driveable unwinding position (2.1) for a full parent roll (20.1) and a second driveable unwinding position (2.2) for a partially full parent roll (20.2), which in the machine direction (MD) of the first unwinding position (2.1) follows and, wherein the winding (4) winds the material web (M) or the material partial webs (M) onto at least one winding core (44) to form at least one winding roll (40) and, wherein the at least one winding roll (40) is supported and driven by a first (41) and a second (42) support roller and, wherein a disposal device (10) is included which is suitable for disposing of any material remaining on the winding core (22.2) of the winding core (20.2) of the residual mother roll (20.3) into a pulper opening (88) after the partial full mother roll (20.2) has been unwound to form a residual mother roll (20.3), characterized in that the disposal device (10) includes at least one shredding device (11, 12, 13) before the disposal of the residual material web (RM0) into the winding core (20.2), preferably arranged laterally to the unwinding (2) in the transverse direction (CD). Pulper opening (88), includes.

2. Machine (1 ) according to claim 1 , characterized in that the residual mother roll (20.3) can be driven in the second unwinding position (2.2) during the unwinding of the residual material web (RM0).

3. Machine (1) according to claim 1 or 2, characterized in that the at least one comminution device comprises a transverse cutting device (12) such that the residual material web (RMO) is comminuted into residual material transverse strips (RM2).

4. Machine (1 ) according to one of the preceding claims, characterized in that the at least one comminution device comprises a longitudinal cutting device (11 ) such that the residual material web (RMO) is comminuted into residual material partial webs (RM1 ).

5. Machine (1 ) according to one of the preceding claims, characterized in that the at least one comminution device comprises a shredder device (13) such that the residual material web (RMO) is comminuted into residual material chips (RM3).

6. Machine (1 ) according to one of the preceding claims, characterized in that the at least one comminution device comprises a longitudinal cutting device (11 ) and a transverse cutting device (12), arranged such that the residual material web (RMO) is comminuted a first time by the longitudinal cutting device (11 ) into residual material partial webs (RM1 ) and that the residual material partial webs (RM1 ) are comminuted a second time by the transverse cutting device (12) into residual material partial web transverse strips (RM2).

7. Machine (1) according to one of the preceding claims, characterized in that the disposal device (10) comprises at least one transport device (15, 17) arranged in the transverse direction (CD) downstream of the at least one shredding device (11, 12, 13), preferably a conveyor belt (15) and / or a transport device (16). port chute (17) and / or a transport channel (17), such that the transport device (15, 17) transports a residual material web (RM1, RM2, RM3) shredded by the at least one shredding device (11, 12, 13) transversely out of the machine (1) into a pulper opening (88) arranged in the transverse direction (CD) to the side of the second unwinding position (2.2).

8. Machine (1) according to one of the preceding claims, characterized in that the disposal device (10) comprises three shredding devices and two transport devices, which are arranged and designed as follows: a longitudinal cutting device (11), a transverse cutting device (12), a conveyor belt (15) in the transverse direction (CD), a shredder device (13), and a second transport device (17).

9. Machine (1 ) according to one of the preceding claims, characterized in that the disposal device (10) comprises a shredding device, preferably a longitudinal cutting device (11 ), and a coreless miniature winding unit (14) which is suitable for winding a residual material web (RM1 ) into a coreless coil (RM1 ).

10. Disposal device (10) for disposing of a residual material web (RM0) of a residual parent roll (20.3) after unwinding in a machine (1) for winding and rewinding a material web (M) and / or material partial webs (M), preferably a paper web, a cardboard web or a tissue web, in particular according to claim 1, characterized in that the disposal device (10) comprises at least one comminution device, preferably a longitudinal cutting device (11), a transverse cutting device (12) and / or a shredder device (13), before the disposal of the residual material web (RM0) into a pulper opening (88), preferably arranged laterally in the transverse direction (CD) to the unwinding (2).

11. Method for winding and rewinding a material web (M) and / or material sub-webs (M), preferably a paper web, a cardboard web or a tissue web, preferably in a machine (1) according to claim 1, wherein the material web (M) is unwound in a winding unit (2), preferably cut into material sub-webs (M) in a longitudinal cutting device (3), and the material web (M) or material sub-webs (M) are wound up in a winding unit (4), wherein the material web (M) is further unwound from at least one driveable mother roll (20.1, 20.2) wound on a winding core (22.1, 22.2), and wherein the material web (M) is successively unwound from a full mother roll (20.1) in a first unwinding position (2.1) and from a partially full mother roll (20.2) in a second unwinding position (2.2), and the partially full mother roll (20.2) after reaching a predetermined size parameter, is moved from the first unwinding position (2.1) to the second unwinding position (2.2) in the machine direction (MD) and, wherein the material web (M) or material partial webs (M) are driven onto at least one winding core (44) to form at least one winding roll (40) and, wherein after unwinding (4) the partial full mother roll (20.2) to a residual mother roll (20.3) in the second unwinding position (2.2), a remaining residual material web (RM0) remains on the winding core (22.2) of the residual mother roll (20.3) and, wherein the residual material web (RM0) is further unwound from the winding core (20.2) of the residual mother roll (20.3) and disposed of in a pulper opening (88), characterized in that the residual material web (RM0) is further unwound from the residual mother roll (20.3) is crushed by at least one crushing device, preferably a longitudinal cutting device (11), a transverse cutting device (12) and / or a shredder device (13), and afterwards a crushed residual material web (RM1, RM2, RM3) is disposed of in the pulper opening (88), which is preferably arranged laterally (CD) to the unfolding (2).

12. Method according to claim 11 characterized in that the residual material web (RMO) is further unwound at least partially or completely during the unwinding (2) of a new full parent roll (20.1 ) in the first unwinding position (2.1 ).

13. Method according to claim 11 or 12 characterized in that the residual mother roll (20.3) remains in the second unwinding position (2.2) for further unwinding of the residual material web (RMO) and the residual mother roll (20.3) is driven during further unwinding by a drive device (24) of the second unwinding position (2.2).

14. Method according to one of claims 11 to 13 characterized in that the residual material web (RMO) is shredded two or three times before the shredded residual material web (RM1 , RM2, RM3) is disposed of in the pulper opening (88).

15. Method according to one of claims 11 to 14 characterized in that the residual material web (RMO) is transported transversely out of the machine (1 ) into the pulper opening (88) arranged laterally next to the machine (1 ) in a transport device (15, 17) arranged in a transverse direction (CD) after at least one comminution.

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