EP0531283B1 - Back-up roll-type reel cutters with automatic tube feed - Google Patents

Abstract

Process and device for automatic tube feed in back-up roll-type reel cutters. A wide web (12) of paper or the like is wound off a wide roll (11) in a take-off station (10). The wide web (12) is divided lengthwise into at least two narrower partial webs (24) in a cutting station (20). The narrower partial webs (24) are wound on using winding tubes (44, 54) in two take-up stations (40, 50) each consisting of at least one take-up device (41, 51) which are arranged on either side of the back-up roll(s) (30), each of the adjacent partial webs (24) being wound onto a different take-up station (40 or 50). The winding tubes (44, 54) are pushed into a feed device (60) into a transfer position parallel to the back-up roll (30) or the back-up rolls in a row one behind the other in association with the empty take-up devices (41, 51), distributed from their transfer positions onto either side of the back-up roll(s) and transported into the tension positions on the take-up devices (41, 51) where they are tensioned so that they can later receive the end of the associated partial web. The winding tubes (44, 54) located in their take-up position and distributed on either side of the back-up roll(s) are taken from the transport device (70) associated with the corresponding take-up device (41, 51) and raised or lowered into the tension position along an essentially rectilinear path. The automatic feed of the winding tubes is thus appreciably improved, because the machinery is comparatively simple, despite the fact that a wide range of adjustments are dispensed with, resetting times are reduced and fewer service staff are required.

Description

The invention relates to a roll cutting machine of the backup roll type with an automatic feeding of winding tubes.

In the case of roll cutting machines of the backup roll type, the winding devices are often so-called center winders, because the clamping heads receiving the winding sleeves for receiving the ends of the partial webs to be wound are driven in the winding direction. These known roll slitting machines provide good winding results and have been in the industry for many years. The production capacity of these machines is severely limited by the time and effort involved in changing the reel / winding tube. This procedure takes between five and eight minutes and requires up to four to five workers for a slitter with a corresponding number of stations. The average cutting and winding time is about 12 minutes. This means that the machine does not produce for 30 to 40% of the time (DE 38 00 703 A1).

It is known both for roll slitting machines with a back-up roll and for those with two back-up rolls, the web being fed from below into the winding station, that the winding tubes are fed from above the backing roll (s) in automated form. For this purpose, according to DE 38 00 702 A1, a feed bar must be provided for each of the two winding stations arranged on the side of the support roller (s). which extend across the entire machine width, which can be eight to ten meters, and are supported on the front of the machine by swivel arms. Both feed bars each have a trough for receiving the winding tubes. When the two feed bars are swiveled towards each other and stand close to each other, the two channels lie so close to each other that there is only space for a single winding tube in each length section of the feed bar. As a result, the winding sleeves, which have already been cut to length, can be placed alternately from one feed bar end onto the trough of one or the other feed bar and pushed in their entirety along the two troughs into the takeover positions corresponding to the positions of the winding device by means of a slide. The distribution of the winding cores on the two channels belonging to each of the winding stations is thus already done when the channels are pushed into the channels. In this case, a reliable division is difficult. In order to equip the individual winding devices with new winding tubes, the feed bars must be pivoted on a circular arc in the direction of the pairs of support arms of the winding devices. During this swiveling process, the winding tubes roll in the gutter that receives them from a first to a second stable position, where they are prevented from rolling out of the gutter by a stop that can be pivoted in turn. The stoppers are pivotally attached to the feed beam under spring force, so that the stopper plate located in the region of the support arms of the winding devices can avoid the support arms. This known feed device has three disadvantages in particular: First, there is the risk that when the winding tubes roll from one to the other stable position, the momentum (momentum) of the rolling winding tubes becomes so great that the rounded stopper plates cannot stop this rolling movement. This risk exists especially in the case of winding cores with a relatively large diameter and / or a relatively large weight. Secondly, the adjustment of the winding sleeves with respect to the clamping heads of the winding devices is particularly complex when the winding sleeve diameter is to be changed and / or even Sleeves of different diameters are to be wound during a single winding process. After all, it is difficult to move the winding cores exactly on their different positions in their transfer positions.

From GB-A-2 136 403 it is known for roll-cutting machines of the backup roller type, in which against a single backup roller and from this movable bearing blocks are provided for the rotatable mounting of a winding tube, on both sides below the single backup roller a conveying means for feeding Winding sleeves are provided on the respective side of the support roller and a lifting device which is used jointly for loading all the winding devices on the respective support roller side. With such an arrangement, only very simple winding programs can be run, i. that is, the diameter of all the winding tubes and the rolls to be wound on the machine side in question must be identical in one operation. In addition, the effort for the separate and precisely positioned winding tube feed to each machine side is relatively large.

A certain simplification of the winding tube feed has been proposed in DE 37 37 503 A1 for a slitter rewinder with two support rollers. With this machine, all the winding cores required for a winding process are pushed onto a single channel. The winding sleeves are not divided into the sides corresponding to the two winding stations until the winding sleeves are in their transfer positions corresponding to the winding devices. The division takes place by unfolding the trough downwards and transferring the winding tubes to mutually attached gripping arms, which pull the winding tubes to the correct side and place them on an inclined plane that leads to the clamping position of the corresponding winding tube. In this known winding tube feed device, too, a stopper is required which prevents the winding tube from rolling further and stops it exactly in the clamping position.
This known winding tube feed device requires a relatively large number of moving parts. In addition, the adjustment effort when changing the part web widths and / or the winding tube diameter is considerable. Finally, when the part web widths change, the gripper arms must be readjusted independently, ie separately from the winding devices. For this purpose, a box girder that extends across the entire width of the machine with side guide rails and slides that can be moved thereon must be provided.

Proceeding from this, the object of the invention is to create a method and a device of the type mentioned at the outset by which the automatic winding tube feed to the winding devices is simplified.

To achieve this object, the device with the features of claim 1 is proposed.

• die Zentrierung der Wickelhülsen auf die Spannkopfmitten sowie der Wickelhülsen-Transport von der Übernahme- in die Spannposition präzise und schnell erfolgen kann;
• der Haltepunkt der Transporteinrichtung bei der Spannposition einfach und präzise, insbesondere programmierbar verstellbar ist, so daß Hülsen mit unterschiedlichen Durchmessern problemlos verarbeitet werden können, d. h. sowohl unterschiedliche Hülsen an verschiedenen Wickelvorrichtungen sowie - grundsätzlich - unterschiedliche Hülsen von Wickelvorgang zu Wickelvorgang an derselben Wickelvorrichtung, wobei dieser Vorgang voll automatisiert ablaufen kann ;
• die Aufwickelvorrichtungen und die ihnen zugeordneten Transporteinrichtungen stets gemeinsam verfahren werden, so daß sich ein Aufwand für ihre gegenseitige Justierung in Achsrichtung erübrigt.

The invention achieves, inter alia, that

• the centering of the winding cores on the center of the clamping head and the transport of the winding cores from the transfer position into the clamping position can be carried out precisely and quickly;
• the stopping point of the transport device at the clamping position can be adjusted easily and precisely, in particular programmably, so that sleeves with different diameters can be processed without any problems, i.e. both different sleeves on different winding devices and - basically - different sleeves from winding process to winding process on the same winding device, whereby this Process can be fully automated;
• the winding devices and the transport devices assigned to them are always moved together, so that there is no need for their mutual adjustment in the axial direction.

The transport devices according to the invention can be used both in reel cutting machines with a single back-up roll and in reel cutting machines with two back-up rolls; Likewise, the partial webs can be fed to the support rollers both from below and from above. The straight-line movement according to the invention, which is a lifting or lowering movement, does not have to be vertical, but can also be carried out obliquely, ie with a clear horizontal component; this is regularly necessary when the winding tubes are fed in a position above the one or both support rollers, that is to say that the partial webs are then usually fed to the support roller (s) from below. In these cases, the winding sleeves have to be lowered from the transfer position into the clamping position by the transport devices. If, on the other hand, as is preferred (claim 3), the feed device for the winding sleeves is arranged below the, preferably single, or below the two support rollers, the winding sleeves are lifted from the transfer position into the clamping position by the transport devices and the inclination angles of the linear transport movement can be small in terms of the preferred, pure vertical movement; Both measures (lifting and inclining the clothes) are advantageous for a calm and secure position of the winding tubes in the receiving elements on the transport devices.

It is essential for the invention that the transport devices consist of lifting or lowering elements, ie. H. from such transport devices which carry out a straight-line movement sequence, as is the case with the, to that extent preferred, piston / cylinder arrangements, spindle drives, linear motors and similar linear transport devices. According to the invention it is preferred that the transport movement takes place only in a straight line, i. H. that the angular position of the transport devices with respect to the vertical direction remains constant during the entire lifting or lowering process. In principle, however, it is also possible to superimpose a certain pivoting movement of the transport device on the lifting or lowering movement.

A certain transport device is preferably assigned to each of the winding devices of a slitter-winder. It is basically possible to provide only a single lifting or lowering element for each transport device; it is preferred, however, that each side of each winding device, ie in particular each support arm, is assigned its own transport device and is arranged to be movable together with it; then a transport device in each case consists of two lifting or lowering elements arranged spatially separated from one another. In this case, when changing the partial web widths, there is no need to move and / or readjust the transport devices separately; Likewise, with such a facility - as will be explained further below - the process of taking over the Winding sleeves can be made particularly easily, that is with little effort and precisely, by the receiving elements of the lifting or lowering elements.

In principle, however, it is also conceivable for each winding station, i. H. to provide only a single pair of lifting or lowering elements on each side of the support roller (s), and to arrange all of the receiving elements for the winding cores provided for the machine side in question on a traverse moved jointly by the two lifting / lowering elements without the. Leaving basic ideas of the invention.

Under "gutters" for jointly receiving all of the winding tubes required for the unwinding devices of both winding stations, d. H. For the purpose of accommodating a complete set of winding tubes, in the sense of the invention, actual channels as well as channel-like holding devices are to be understood, which make it possible to receive all the winding tubes of a set one behind the other in their axial direction, in particular in such a way that the winding tubes from one machine end forth on this "groove" can be pushed, as z. B. is known from DE 38 00 702 A1. Such a channel is preferably - in contrast to DE 38 00 702 A1, where a double channel is provided - but "single track", ie. that is, the axes of all the winding tubes lie on a common straight line or, if the winding tubes have different diameters, the winding tube axes lie in a common vertical plane; this is already the case with the "gutter" known from DE 37 37 503 A1 and has the advantage that when the winding tubes are pushed into the "gutter" from one end of the machine, there is still no division into the two sides of the machine, ie. H. on the two winding stations, as required by DE 38 00 702 A1.

The takeover of the winding tubes from the "groove" by the receiving members of the lifting / lowering members is now preferably carried out (claim 4) in that the winding tube receiving elements of the individual transport devices are arranged in their winding tube receiving position so that they "catch" the "dropped" winding tubes. The "dropping" of the winding tubes on the "groove" is already known from DE 37 37 503 A1 and includes that the winding tubes z. B at least one inclined plane is fed to each side of the machine, over which they roll due to their gravity, where they lose height and that the sleeves assigned to the two winding stations become laterally spaced from one another. The "catching" of these winding cores by the receiving members according to the invention therefore means that the winding cores which move freely after the division into the two machine sides return to a defined position.

There are now various options for designing the means for throwing off the winding tubes. The alternative embodiments according to claims 5 or 6 are preferred. In both cases, which can also be used sensibly and advantageously independently of the features of claims 1 and 2, only a single channel is required to accommodate an entire set of winding tubes. In the embodiment according to claim 5, at least one lifting member is required for each winding tube, while in the embodiment according to claim 6, at least one retaining member, preferably two retaining members, which are preferably designed according to claim 7, should be provided per winding tube. By means of the organs for "ejecting" the winding tubes from the "groove", the distribution of the winding tubes on the two machine sides, ie on the associated winding stations, is also carried out. - Basically, it is also conceivable that the lifting / lowering elements according to the invention make the division of the winding tubes over the two sides of the machine. This would be e.g. B. possible in that the receiving members of the lifting / lowering members are moved exactly or approximately into the positions of the winding tubes, in which the winding tubes are located in the "groove", in order to directly there the respective winding tube, for. B. by lifting the Take over the winding tube from the gutter. In such a case, a pivoting process of the lifting / lowering elements, in particular about their base point, could pivot them into the angular position (based on the vertical direction) that corresponds to the angular position for the transfer of the winding tubes into their clamping position; in particular, all lifting / lowering elements of one machine side could be pivoted together, while the lifting / lowering movement of each transport device and, if appropriate, also a method transverse to the direction of movement of the partial webs could be carried out separately, in particular programmed, for each lifting / lowering element.

The size, shape, material selection and technical conception or process conditions of the above-mentioned components as well as those claimed and described in the exemplary embodiments and to be used according to the invention are not subject to any special exceptional conditions, so that the selection criteria known in the respective field of application can be used without restriction .

• Fig. 1 Von einer Rollenschneidemaschine die Wiederaufwickelvorrichtung in Stirnseitenansicht (Ansicht A gemäß Fig. 8) und - schematisch und in verkleinertem Maßstab - die übrigen Baugruppen der Rollenschneidemaschine;
• Fig. 2 bis Fig. 7 eine Sequenz des Arbeitszyklusses der Wickelhülsen-Zuführung und des Teilbahn-Aufwickelns in schematischer Darstellung und im übrigen in derselben Ansicht wie in Fig. 1;
• Fig. 8 bis Fig. 10 von der Rollenschneidemaschine gemäß Figuren 1 bis 7 bei fortgelassener Stützwalze und Rollenschneidestation in Ansicht von oben (entsprechend der Ansicht in Richtung der Pfeile B-B gemäß Fig. 6) eine Sequenz der Wickelhülsen-Übergabe von der Rinne an die Hub-/Senk-Organe;
• Fig. 11 bis Fig. 16 für eine Rollenschneidemaschine wie in Fig. 1 eine alternative Ausführungsform der Wickelhülsen-Zuführeinrichtung in der gleichen Ansicht wie in Figuren 1 bis 7 als Sequenz eines Wickelhülsen-Zuführzyklusses.

Further details, features and advantages of the subject matter of the invention will become apparent from the following description of the accompanying drawing, in which - by way of example - two preferred embodiments of a winding tube feed device according to the invention are shown. The drawing shows:

• Fig. 1 of a reel cutting machine, the rewinder in front view (view A according to Fig. 8) and - schematically and on a smaller scale - the other assemblies of the reel cutting machine;
• 2 to 7 show a sequence of the working cycle of the winding tube feed and the partial web winding in a schematic representation and otherwise in the same view as in FIG. 1;
• 8 to 10 of the reel cutting machine according to FIGS. 1 to 7 with the support roller and reel cutting station omitted in a view from above (corresponding to the view in the direction of the arrows BB according to FIG. 6) a sequence of the winding tube transfer from the trough to the hub - / lowering organs;
• 11 to 16 for a roll cutting machine as in FIG. 1 an alternative embodiment of the winding tube feed device in the same view as in FIGS. 1 to 7 as a sequence of a winding tube feed cycle.

In the roll cutting machine according to FIG. 1, 10 as a whole denotes an unwinding station for at least one wide roll 11 of a web 12 of paper or the like. The unwound, but still undivided web 12 is a cutting station designated as a whole by 20, which u. a. a plurality of rollers 21, 22, (rollers) ... has at least one slitter 23 and other known organs supplied.

The partial webs 24,... Created in the cutting station 20 by longitudinal division of the web 12 are fed to a support roller 30 which extends over the entire machine width and which, if appropriate, can have a vacuum suction facility for holding partial web ends.

On both sides of the (at least) one support roller 30 there is a winding station 40, 50, each consisting of at least one, preferably a plurality of winding devices 41, 51.

Each winding device 41 and 51 consists (in the core) of a pair of support arms 42 and 52, which are provided with tensioning devices 43 and 53 at their free ends. The tensioning devices 43 and 53 can engage in tubular winding sleeves 44 and 54 from the ends of the winding sleeves, can be clamped in a rotationally fixed manner with the winding sleeves and can be driven in the direction of rotation (center winder) - see also FIGS. 7 to 10.

The support arms 42 and 52 are pivotally mounted in their lower end regions about axes 45, 55. The pivoting path of the winding axis is shown as a dash-dotted line 46 or 56.

The pivoting process of the support arms 42 and 52 takes place by means of piston / cylinder devices 47 and 57, which in turn are pivotally mounted about axes 48 and 58, respectively. The pivot bearings for the axes 45 and 48 or 55 and 58 are each located on a common support member 49 or 59, with which each of the previously described assemblies 41 ', 41' ', 51', 51, each forming a winding device '' as a whole and independent of the other corresponding assemblies along the machine width, i.e. H. can be moved along the at least one support roller 30, so that partial webs of different widths can be wound up to partial web rolls 25. The support roller 30 is supported by a frame formed from sections 31 shown in detail and a crossbeam not shown. - The components described above are known per se in reel cutting machines and therefore do not require any further detailed explanation.

All of the winding sleeves 44 and 54 forming a set, which are required for a winding operation, are fed to the slitter rewinder via a feed device 60 which is known with regard to its general function, and to the individual winding devices 41 and 51 there. For this purpose, an elongated support element, designated as a channel 61, is provided, which extends over the entire machine width below the support rollers 30 and parallel to the latter. The winding sleeves 44 and 54 can be pushed onto the trough 61 from an end of the machine through an opening 32 in one of the supports 31. There are known means for this process, such as. B. according to DE 38 00 702 A1.

The feed device 60 also consists of transport devices 70 which take over the winding tubes 44 and 54 from the trough 61 and into the clamping position (shown on the left in FIG. 1), ie. H. move the position of the tensioning devices 53 straight there. The transport devices 70 are lifting / lowering members with a - in the exemplary embodiment, double-armed receiving member 71, which is attached to the upper end of each lifting / lowering member and a positionally accurate receiving and storage during transport into the clamping position along the dash-and-dot line 72 allows. In Fig. 1, the winding station 50 is shown in the tensioned position and the winding station 40 in the winding position. As a rule, however, all winding devices are in the same working position.

The transport devices 70 can e.g. B. as an electromechanical lifting cylinder - with or without drive 70 '. Such lifting / lowering elements are available in various forms on the market and are therefore to be regarded as known, so that they do not require any further explanation. They allow u. a. an exact procedure in pre-programming adjustable end positions. The alignment of the transport devices to the clamping positions only needs to be carried out once if adjustable holding means 73 are provided which allow the transport devices to be fixed in a specific direction and these holding means 73 can be fastened to the associated support member 49 or 59 of the respective winding device half.

The winding sleeves 44 and 54 are transferred from the trough 61 to the receiving members 71 by "throwing" out of the trough 61 and "catching" by the receiving members 71. For this purpose, the trough 61 is pivoted about an axis 62 about its longitudinal direction, wherein the swiveling movement to one or the other channel side takes place by means of at least one swiveling device 63. As a result, the trough 61 can be as far as one or the other the other side are pivoted so that the winding tubes 44 and 54 laterally roll out of the groove 61 and reach the receiving members 71 directly via inclined planes 64. Restraining members 65 prevent the winding cores 54 and 44 intended for the respective opposite winding station 50 or 40 from getting into the wrong winding station.

The structural details and sequences of movements result from the following description of a complete working cycle of the rewinder on the basis of FIGS. 2 to 10 and - for an alternative embodiment - on the basis of FIGS. 11 to 16:

FIG. 2 shows the work phase in which the partial web rolls 25 are shortly before they are completed. The winding sleeves 44 and 54 provided for the next rewinding process are already in the channel 61 of the feed device 60. These winding sleeves have different diameters, while the two recognizable partial web rolls 25 are wound on winding sleeves of identical diameter, with underlying and therefore not recognizable Partial web rolls can of course also be equipped with winding cores of different diameters.

From Fig. 3 it can be seen how the partial web rolls 25 have been deposited on the floor 33 by pivoting the support arms 42 and 52 after completion of a rewinding process. The partial webs are then cut so that the partial web rolls 25 can be transported away and the next winding process can be prepared. However, this is not shown in detail since it is not part of the subject matter of the invention and - in principle - is already known.

After the partial web rolls 25 have been placed on the floor 33, the tensioning devices 43 and 53 of the winding devices must be used 41 and 51 can still be relaxed and removed from the winding tubes in the axial direction. This happens e.g. B. in the working phase shown in Fig. 3 and can - in principle - also take place later. The point in time at which the finished partial web rolls 25 are laterally rolled out of the winding stations 40 and 50 is essentially independent of this. 5 shows the situation after rolling out. The support arms 42 and 52 then move into the tensioning position shown in FIG. 6 (and in the left half of the figure in FIG. 1), in which the new winding tubes are to be clamped in the respective winding device.

In the meantime, the process of feeding runs - largely independent of the work processes of rewinding partial webs, severing the partial webs, depositing the partial web rolls, removing the tensioning devices and transporting the finished partial web rolls, as well as swiveling the support arms back into the tensioning position a new set of winding cores. This is described below:

First, as already mentioned, a complete set of winding tubes is introduced into the channel 61. For this purpose, the winding tubes are preferably already cut to length and are inserted into the channel 61 from one end of the machine, sorted according to diameter and length. Then the winding tubes have to be pushed into the take-over position, ie the position in which the winding devices 41 and 51 are to take over the winding tubes 44 and 54 later. If the widths of the desired partial web rolls are sufficiently large, the winding tubes located one behind the other in the trough can abut one another. However, the desired partial web widths are so narrow that it is no longer possible to move the tensioning devices 43 and 53 on both sides sufficiently far apart, because then the assemblies 41 ', 41''and51', 51 '' of adjacent winding devices would abut one another, it is of particular advantage to move the winding devices of each winding station apart along the direction of extension of the at least one support roller 30 after the partial webs have been cut off. This creates a sufficient lateral distance for the subsequent moving apart of the associated assemblies 41 'and 41 "or 51' and 51" and for taking over the new winding sleeves 44 and 54. This take-over position is shown in FIGS. 8 to 10. This preferred method of operation requires that the winding sleeves 44 and 54 are initially positioned at an axial distance from one another (FIG. 8) and, after the new winding sleeves have been taken over and clamped, the winding devices 41 and 51 of each winding station move towards each other again in such a way that between the neighboring ones Partial webs 24 or partial web rollers 25 no gap gaps arise in the axial direction.

The process of this sleeve positioning can be automated with sliders or the like which are known per se and are therefore not specifically shown in the drawing.

From the sequence of FIGS. 3 to 5, which correspond to the sequence of FIGS. 8 to 10, it can now be seen how the process of "dropping" the winding cores out of the groove 61 and the "catching" of the winding cores by the receiving members 71 takes place:

First, all the winding sleeves 44 and 54 rest in the single groove 61 in the takeover positions shown in FIG. 8. If - as preferred - and as can be seen in FIGS. 1 and 8 to 10, the transport devices 70, the inclined planes 64 and the retaining members 65 of each assembly 41 ', 41''are firmly connected to it and can be moved laterally with it the "ejection" from the trough 61 does not take place until the aforementioned assemblies are in their takeover position shown in FIGS. 8 to 10.

If, as can be seen from FIG. 4 (corresponding to FIG. 9), the channel 61 is pivoted to the winding station 50 (shown on the left in the picture), the winding sleeves 54 provided for this winding station roll over those assigned to the assemblies 51 'and 51' ' inclined planes 64 directly into the receiving members 71 of this winding station, while the winding cores 44 intended for the winding station 40 are retained by the retaining members 65 of the assemblies 51 'and 51' 'in such a way that they remain in or in when the channel 61 is pivoted back these come back so that they can subsequently be “thrown” onto the other side — towards the winding station 40. For this purpose, the retaining members 65 can have curved stop surfaces 66.

During this “dropping off process” and “collecting process”, the carrying arms 42 and 52 can still be in a position other than the clamping position (see FIGS. 4 and 5). To take over the winding tubes from the transport devices 70 by the clamping devices 43 and 53, the support arms 42 and 52 must be pivoted into the clamping position shown in FIGS. 6 and 15, respectively. Characterized in that the curved lines of movement of the winding axes of the support arms 42, 52 are cut in the clamping position from the straight lines of movement of the winding tube axes, the transport devices only have to stop at predetermined points so that tubes of different thicknesses can be moved precisely centered into the clamping position. This is followed by the tensioning process, possibly the lateral movement of the winding devices into the required winding position and the approach of the new winding tubes 44 and 54 to the support roller 30, where they come to rest and are connected to the associated partial web in a manner known per se, so that the next winding process can begin (Fig. 7).

In the embodiment according to FIGS. 11 to 16, the main difference from the aforementioned embodiment (according to FIGS. 1 to 10) is that the channel 61 is not about its longitudinal axis is pivoted, but that, in each case to the side of the channel center, along the channel 61 a plurality of small lifting elements 67 are provided, which with z. B. fluidically or magnetically operated plungers 68 are able to laterally raise the winding tube 44 or 54 lying in the respective longitudinal section of the channel to such an extent that the winding tube in question has one of the lateral top dead centers 69 'and / or formed by the channel 61 69 '' can be raised.

The work situation in FIG. 11 roughly corresponds to that of FIG. 2.

FIG. 12 corresponds - analogously - to FIG. 3.

14 corresponds - analogously - to FIGS. 4 and 5.

Fig. 15 corresponds - analogously - to Fig. 6, but with the difference that in Fig. 15 the tensioning position coincides with the winding position (corresponding to Fig. 7). For the sake of completeness, FIG. 16 also shows how the transport devices moved back into the takeover position at the start of the winding process.

According to FIG. 13, a further special feature is provided in this exemplary embodiment: the inclined planes 64 are assigned to the assembly containing the channel 61 and not - as is the case according to FIGS. 1 to 10 - to the individual assemblies of the winding devices. The inclined planes 64 are formed by plate-shaped elements which are arranged one behind the other in the machine direction (parallel to the support roller axis) with more or less small distances and whose length is less than half the width of the minimally expected part web width. These plates 64 'can be pivoted about an axis 64''in the direction of the arrows shown in FIG. 13, so that they can be pivoted at least when they are in the position of the support arms 42 or 52.

Reference symbol list:

10th

Unwinding station

11

role

12th

train

20th

Cutting station

21

Roller

22

Roller

23

Longitudinal cutting device

24th

Partial webs

25th

Partial web roll

30th

Backup roller

31

Support

32

opening

33

ground

40

Winding station

41

Take-up device

41 '

Assembly

41 ''

Assembly

42

Beam

43

Clamping device

44

Winding tube

45

Swivel axis

46

Rewind axis swivel path

47

Piston / cylinder device

48

axis

49

Supporting member

50

Winding station

51

Take-up device

51 '

Assembly

51 ''

Assembly

52

Beam

53

Clamping device (sleeve holder)

54

Winding tube

55

Swivel axis

56

Rewind axis swivel path

57

Piston / cylinder device

58

axis

59

Supporting member

60

Feeding device

61

Gutter

62

Swivel axis

63

Swivel device

64

inclined plane

64 '

plates

64 ''

axis

65

Restraining devices

66

Abutment surfaces

67

Lifting devices

68

Pestle

69 '

Dead center

69 ''

Dead center

70

Transport equipment

70 '

drive

71

Receiving organs

72

line

73

Holding means

A

view

B

view

Claims (6)

1. Back-up roll-type reel cutter preferably equipped with a single support roll, on which at least one wide roll (11) of a web (12) of paper or similar may be slit into several narrower rolls (25),

   - having an unwinding station (10) for the at least one wide roll (11),

   - having a cutting station (20), in which the wide web (12) may be divided lengthwise into partial-width webs (24) by means of at least one lengthwise slitting device (23),

   - having two winding stations (40 and 50) each with at least one winding device (41 and 51 respectively), wherein said two winding stations (40 and 50) are arranged on opposite sides of a preferably single support roll (30), wherein said winding devices (41, 51) allocated to the respective adjacent partial-width webs (24) are each assigned to one or the other of the winding stations (40, 50), and each of said partial-width webs (24) can be wound on a respective winding device (41 or 51) to form a respective narrower roll (25), and

   - having a feeding device (60) arranged approximately parallel to the preferably single support roll (30) for jointly and precisely feeding all the winding sleeves (44 and 54) required for the winding devices (41 and 51) of both winding stations (40 and 50) into the transfer positions corresponding to the positions of the winding devices on sleeve transfer and for the subsequent distribution of all winding sleeves (44, 54) into the loading positions of the winding devices (41, 51) of both winding stations (40, 50), comprising a "groove" (61) for all the winding sleeves (44 and 54) as well as at least one transport device (70) for each winding device (41 or 51) for transporting a winding sleeve from its transfer position into the loading position,
   characterised in that the transport devices (70) comprise lifting or lowering devices, which may be raised or lowered and may be displaced transversely to the running direction of the partial-width webs (24) to be rewound, with winding sleeve receiving devices (71), which may be moved in a straight line into the loading position, at the upper ends of the lifting or lowering devices and may be moved jointly with their allocated winding device (41 or 51) or their allocated structural assembly (41' or 41''; 51' or 51'' respectively) of the winding device (41 or 51) transversely to the running direction of the partial-width webs (24) to be rewound.
2. Reel cutter according to Claim 1, characterised in that the feeding device (60) is arranged below the preferably single support roll (30).
3. Reel cutter according to Claim 1 or 2, wherein the groove (61) is constructed to receive all the winding sleeves (44, 54) in a preferably single vertical plane and has means for "ejecting" the winding sleeves into the respective direction of the winding device (41 or 51) allocated to them, characterised in that the winding sleeve receiving devices (71) of the individual transport device (70) are arranged to the side of the groove (61) in its winding sleeve receiving position so as to "catch" the "ejected" winding sleeves.
4. Reel cutter according to Claim 3, characterised in that the "ejection" means are lifting devices (67), which by lateral lifting of the corresponding winding sleeve (44 or 54) on one side or the other are effective beyond a lateral upper dead centre (69' or 69'' respectively) formed by the groove (61).
5. Reel cutter according to Claim 3, characterised in that the "ejection" means have at least one swivelling device (63) for lateral swivelling of the entire groove (61) or shorter sections of the groove to its one side or other.
6. Reel cutter according to Claim 5, characterised in that each winding device (41 and 51) has at least one restrainer (65) to prevent the adjacent winding sleeve (44 and 54 respectively) intended for the winding station (40 and 50 respectively) lying opposite with respect to the preferably single support roll (30) from coming out of the groove (61) or the groove section, and also the restrainers (65) may be moved jointly with their allocated winding device (41 and 51 respectively) or their allocated structural assembly (41' or 41''; 51' or 51'' respectively) of the winding device (41 or 51 respectively) transversely to the running direction of the partial-width webs (24) to be rewound.

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