EP2888954A1 - Spreading device for two or more webs of wrapping material for producing at least two parallel rods of products for the tobacco industry and a machine with said spreading device - Google Patents

Abstract

The present invention relates to a spreading device for two or more wrapping material webs (2,3) for producing at least two parallel strands of products of the tobacco-processing industry with a number of Umlenkrollengruppierungen (4,5) corresponding to the number of wrapping material webs (2,3) each with individual pulleys (6,7,8,9), on each of which a wrapping material web (2,3) is deflected on different sides, wherein the deflection rollers (6,7,8,9) are tilted so that the deflected thereto Hüllmaterialbahn (2,3) in relation to a feed direction (I, III) laterally offset parallel from the Umlenkrollengruppierung (4,5) emerges, wherein the Umlenkrollengruppierungen (4,5) in the transport direction of the Hüllmaterialbahnen (2,3) offset from one another ,

Description

The invention relates to a spreading device for two or more Hüllmaterialbahnen for the production of at least two parallel strands of products of the tobacco processing industry with the features of the preamble of claim 1 and a system with a spreading device with the features of the preamble of claim 17th

In machines for the production of products of the tobacco processing industry, for example, both the strand-shaped filter material and the strand loose tobacco fibers is fixed by means of a Hüllmaterialbahn. In order to increase the production speed, it has been proven to produce the products in at least the strand forming unit in two or more parallel strands, if no expensive, precut wrapping material is to be used. To produce the parallel supplied Hüllmaterialbahnen a Hüllmaterialbahn multiple, especially double, width is first unwound from a reel and cut by means of a cutting device in a continuous cutting process in two or more mutually parallel Hüllmaterialbahnen. The cutting device is formed by a pull-cutting roller assembly in which the multi-width wrapping material web is cut in two or more wrapping material webs of identical width. Subsequently, the parallel Hüllmaterialbahnen be parallel by means of a spreading device offset from each other so that they then parallel and at a distance from each other. This is particularly necessary because the strands are then also in the strand forming unit at a distance and parallel to each other.

From the EP 1 186 247 B1 Such a spreading device is known, which comprises a number of Umlenkrollengruppierungen corresponding to the number of Hüllmaterialbahnen which are each traversed by a Hüllmaterialbahn such that the Hüllmaterialbahn is deflected at the inlet to the underside of the first guide roller and then at the top of the second guide roller. The pulleys are inclined relative to the deflected Hüllmaterialbahnen, so that the Hüllmaterialbahnen be offset parallel laterally during the deflection. The Spreizabstand the Hüllmaterialbahnen after the passage can be changed by the second pulleys are adjusted in height.

From the EP 0 309 818 B1 a spreading device of similar design is known in which the Umlenkrollengruppierungen each comprise two pulleys, which are each arranged in pairs on a common support frame. The Spreizabstand the Hüllmaterialbahnen is thereby changed in this solution by the support frame is pivoted together with the pulleys about a parallel to the feed direction through the center of the first guide roller extending axis of rotation.

In both solutions, the deflection rollers are free-floating mounted on one side, so that the Hüllmaterialbahnen can be threaded from the side of the free ends of the pulleys in the Umlenkrollengruppierungen. The pulleys of Umlenkrollengruppierungen which pass through the Hüllmaterialbahnen are, are arranged to each other so that the free ends of the pulleys facing each other and have a distance from each other. As a result, both Hüllmaterialbahnen be threaded between the pulleys in the Umlenkrollengruppierungen. A disadvantage of these solutions is the fact that the threading process of the wrapping material requires a special skill of the person handling and is time-consuming.

Against this background, the invention has for its object to provide a spreading device or a system with a spreading device, in which the threading of the Hüllmaterialbahnen is easier to handle.

To solve the problem, a spreading device with the features of claim 1 and a system with the features of claim 17 is proposed. Further preferred embodiments of the invention can be found in the subclaims, the figures and the associated description.

• einer der Anzahl der Hüllmaterialbahnen entsprechenden Anzahl von Umlenkrollengruppierungen, mit jeweils einzelnen Umlenkrollen, an denen jeweils eine Hüllmaterialbahn an unterschiedlichen Seiten umgelenkt wird, wobei
• die Umlenkrollen derart schräggestellt sind, dass die daran umgelenkte Hüllmaterialbahn in Bezug zu der Zuführrichtung seitlich parallel versetzt aus der Umlenkrollengruppierung austritt, wobei der Kern der Erfindung darin zu sehen ist, dass die Umlenkrollengruppierungen in Transportrichtung der Hüllmaterialbahnen versetzt zueinander angeordnet sind.

According to the invention, a spreading device for two or more wrapping material webs for producing at least two parallel strands of products of the tobacco-processing industry is proposed for achieving the object with the following features:

• a number of Umlenkrollengruppierungen corresponding to the number of Hüllmaterialbahnen, each with individual pulleys on each of which a Hüllmaterialbahn is deflected on different sides, wherein
• the deflection rollers are tilted in such a way that the wrapping material web deflected thereon exits laterally parallel offset from the deflection roller grouping with respect to the feed direction, the core of the invention being seen therein, that the Umlenkrollengruppierungen are arranged offset in the transport direction of the Hüllmaterialbahnen offset from each other.

Due to the offset in the transport direction arrangement of Umlenkrollengruppierungen the threading of the Hüllmaterialbahnen can be considerably simplified, since the access is much easier. The wrapping material webs are offset in relation to the transport direction introduced into the Umlenkrollengruppierung and laterally offset parallel in the Umlenkrollengruppierungen. Here, the Hüllmaterialbahnen go through, starting from the point in which the first Hüllmaterialbahn enters the first Umlenkrollengruppierung to the point in which the last Hüllmaterialbahn exiting the Umlenkrollengruppierung, the same distance, so that no stresses are introduced into the flow of the Hüllmaterialbahnen. Furthermore, the lateral parallel offset of the Hüllmaterialbahnen can be designed much more individual than was possible in a conventional spreading with oppositely arranged Umlenkrollengruppierungen. In extreme cases, it would even be conceivable to offset the wrapping material webs so that they subsequently overlap at least partially in an edge section.

It is further proposed that the Umlenkrollengruppierungen are arranged one above the other like a terrace. The proposed arrangement the Umlenkrollengruppierungen are particularly simple and easy to handle for threading the wrapper strip accessible from the side. The threading is particularly simple when the pulleys are mounted on one side free-floating, so that the guideway for the wrapping strip is open at the side.

It is further proposed that the deflection rollers each have a Umlenkrollengruppierung an identical diameter and an identical relative angle to each other. The first and second pulleys of a Umlenkrollengruppierung therefore have an identical diameter and are each aligned with the incoming Hüllmaterialbahn that the pulleys of the individual Umlenkrollengruppierungen have an identical relative angle to each other, i. the relative angle between the respective first deflection roller and the respective second deflection roller of the different Umlenkrollengruppierungen is identical. The relative angle is the angular difference between the longitudinal axes or axes of rotation of the pulleys of Umlenkrollengruppierung in the projection in the transport direction, which is the cause of the lateral offset of the Hüllmaterialbahnen, so that this is also identical in result at the individual Umlenkrollengruppierungen. The advantage of the proposed solution is the fact that the deflection and thereby caused due to the relative angle angle change of Hüllmaterialbahn between the inlet section and the drain section on the pulleys of different Umlenkrollengruppierungen is identical. The deflection is also dependent on the diameter of the pulleys, which is also identical due to the identical diameter.

It is further proposed that the distances between the deflection rollers in each case one Umlenkrollengruppierung in the different Umlenkrollengruppierungen are identical. Thus, the distance traveled by the Hüllmaterialbahnen when passing through the Umlenkrollengruppierungen, identical, so that introduced by the spreader no additional stresses in the Hüllmaterialbahnen be neither in the lead nor in the wake of Hüllmaterialbahnen.

Ideally, the Umlenkrollengruppierungen are identical and mirror-symmetrical design or aligned, so that the Hüllmaterialbahnen be offset laterally by an identical path.

It is also proposed that the feeding and discharging directions of the wrapping material webs be aligned parallel to each other towards and away from the Umlenkrollengruppierungen. Due to the parallel orientation of the Hüllmaterialbahnen in the feed and discharge, the Hüllmaterialbahnlauf can be further uniformed by the likelihood of the occurrence of stresses in the Hüllmaterialbahnen is further reduced by the parallel course of the Hüllmaterialbahnen. As a result, the course of the wrapping material webs can be controlled particularly accurately, which is particularly advantageous for controlling the edge position of the wrapping material webs.

A particularly precise control can thereby be realized by the Umlenkrollengruppierungen are each pivotable about an axis passing through the voltage applied to the first deflection roller Hüllmaterialbahn pivot axis. By the proposed solution, the potential, introduced by the pivotal movement of the Umlenkrollengruppierungen in the Hüllmaterialbahn voltages can be reduced to a minimum and ideally even completely reduced to zero.

Ideally, the pivot axis lies exactly in the longitudinal center line of the Hüllmaterialbahn, so that the Hüllmaterialbahn the side of the center line in each case by the same angle and in the same Width is pivoted during the adjustment of Umlenkrollengruppierung.

It is further proposed that the Umlenkrollengruppierungen are each adjustable by means of an adjusting device formed by a multi-joint mechanism. Due to the multi-joint mechanism, the entire Umlenkrollengruppierung can be particularly easily pivoted about the virtual arranged in the Hüllmaterialbahn pivot axis, thereby also the adjusting movement of a linear drive device can be converted into a pivoting movement particularly easy. This can be realized in a particularly simple manner in that the multi-link mechanism transmitting the adjusting movement has a positive guide defining the pivot axis. The forced operation is formed by various joints, which dictate the movement sequence during the pivoting movement by their distances from each other.

Here, the adjusting movement transmitting multi-link mechanism is preferably mounted with two first coupling rods in two stationary pivot bearings, wherein the stationary pivot bearings are preferably arranged such that their pivot axes lie on a straight line which extends through the voltage applied to the first deflection roller Hüllmaterialbahn.

Further, the first coupling rods are preferably coupled together via at least two second coupling rods, at the ends of a support plate is pivotally mounted in each case a pivot bearing, wherein the deflection rollers are arranged on the support plate.

It is also proposed that the second coupling rods each be mounted in pivot bearings with respect to the first coupling rods are, and at least arranged closest to the stationary pivot bearings pivot bearing between the first and second coupling rods are arranged so that they are perpendicular to the transport direction of the Hüllmaterialbahn a distance from the fixed pivot bearings, which the distance between the pivot axis of the Hüllmaterialbahn and the nearest pivot bearing between the Support plate and one of the second coupling rods perpendicular to the transport direction of the Hüllmaterialbahn corresponds.

It is further proposed that the distance between the pivot axis and the nearest pivot bearing between the support plate and one of the second coupling rods perpendicular to the transport direction of the Hüllmaterialbahn the distance between the stationary pivot bearings and the nearest pivot bearings between the coupling rods and the distance between the pivot axis and the nearest Swivel bearing between the support plate and one of the second coupling rods in the transport direction of the Hüllmaterialbahn corresponds.

It is also proposed that the second coupling rods are each mounted in pivot bearings relative to the first coupling rods, and the distance between the pivot bearings of the second coupling rods corresponds to the distance between the stationary pivot bearings.

Furthermore, it is proposed that the second coupling rods are each mounted in pivot bearings relative to the first coupling rods, and the distance between the pivot axis of the Hüllmaterialbahn nearest stationary pivot bearing and the pivot axis of the Hüllmaterialbahn the distance between the pivot bearing between the support plate and one of the second coupling rods, which the pivot axis is closest to, too the pivot bearing between one of the first and second coupling rod, which is arranged next to the stationary pivot bearing, corresponds.

The proposed arrangement of the pivot bearing and the dimensioning of the distances of the pivot bearing pivoting of the Hüllmaterialbahn can be made possible by a running in the Hüllmaterialbahn pivot axis, allowing a very accurate control of the edge position of the Hüllmaterialbahn with very low stresses in the lead and lag of the Hüllmaterialbahn can be. In particular, it can be prevented that the Hüllmaterialbahn runs laterally during pivoting so far on the guide roller, that the pivot axis of the Hüllmaterialbahn runs outside the Hüllmaterialbahn.

It is further proposed that the Umlenkrollengruppierungen are adjustable by means of a coupled to the second coupling rods drive means. The proposed solution is advantageous in that the drive means can thereby be arranged and fastened at a distance from the Umlenkrollengruppierungen, without that has disadvantages for the Verstellgenauigkeit, since the second coupling rods are connected directly to the support plates on which the pulleys are held ,

Further, a system having a spreading device according to claim 16 is proposed to solve the problem, wherein the system has a partition, the spreader extends through the partition, and the Umlenkrollengruppierungen arranged on an operator side of the partition, and the drive means on a drive side of the partition are. Through the proposed partition, and the arrangement the Umlenkrollengruppierungen the operator can be protected, for example, during the threading of the Hüllmaterialbahnen before an unwanted engagement in the drive means and the associated transmission mechanism for transmitting the drive movement. Further, the drive means, the gear mechanism and the corresponding part of the multi-link mechanism can be protected from external mechanical influences from the operator side. For the operator are aware only the Umlenkrollengruppierungen for threading the Hüllmaterialbahnen accessible.

Further, it is proposed that the partition wall has recesses, and the multi-joint mechanism passes through the recesses of the partition with the second coupling rods, and the first coupling rods of the multi-joint mechanism on the drive side and the support plates of the multi-joint mechanism on the operator side of the partition are arranged.

Fig. 1:

eine erfindungsgemäß ausgebildete Spreizvorrichtung in Seitenansicht; und

Fig. 2:

eine erfindungsgemäß ausgebildete Spreizvorrichtung aus Fig. 1 in Sicht von oben; und

Fig. 3:

einen Vielgelenkmechanismus zur Verstellung einer Umlenkrollengruppierung in verschiedenen Ansichten; und

Fig. 4:

die Abstände der Schwenklager des Vielgelenkmechanismus; und

Fig. 5:

eine erfindungsgemäße Anlage mit einer Spreizvorrichtung und einer Trennwand in einer ersten Ansicht; und

Fig. 6:

eine erfindungsgemäße Anlage mit einer Spreizvorrichtung mit einer Trennwand in einer zweiten Ansicht.

The invention will be explained below with reference to preferred embodiments with reference to the accompanying figures. Showing:

Fig. 1:

an inventive spreading device in side view; and

Fig. 2:

an inventive designed spreading device Fig. 1 in view from above; and

3:

a multi-joint mechanism for adjusting Umlenkrollengruppierung in different views; and

4:

the distances of the pivot bearing of the multi-joint mechanism; and

Fig. 5:

a system according to the invention with a spreading device and a partition wall in a first view; and

Fig. 6:

a system according to the invention with a spreading device with a partition in a second view.

In the Fig. 1 is a spreading device according to the invention can be seen schematically from the side. The spreading device is a Hüllmaterialbahn 1 multiple, in this case double, supplied width of a reel, not shown, and cut in a train-Schneidwalzengruppierung 10 in two parallel Hüllmaterialbahnen 2 and 3 simple width. The wrapping material webs 2 and 3, which adjoin each other immediately after cutting, are then fed to two deflecting roller groups 4 and 5 which are arranged offset from one another in the transport direction of the wrapping material webs 2 and 3. The front material wrapping material 2 in the representation is first introduced into the first Umlenkrollengruppierung 4, and discharged at the top of the first guide roller 6 down to the bottom of the second guide roller 8 and then again from the bottom of the second guide roller 8. The feeding directions I and III of the Hüllmaterialbahnen 2 and 3 and the Abführrichtungen II and IV are both in the vertical plane of the representation of Fig. 1 as well as in the horizontal plane of the representation of the Fig. 2 aligned parallel to each other.

The second rear wrapping material web 3 is deflected only after covering a distance, ie offset in the transport direction, in a second Umlenkrollengruppierung 5 with also two pulleys 7 and 9. The two pulleys 7 and 9 of the second Umlenkrollengruppierung 5 and the two pulleys 6 and 8 of the first Umlenkrollengruppierung 4 are aligned at an identical distance from each other and have an identical diameter. Furthermore, the first deflection rollers 6 and 7 and the second deflection rollers 8 and 9 are each aligned at an identical relative angle to each other, so that the Hüllmaterialbahnen 2 and 3 when passing through the Umlenkrollengruppierungen 4 and 5 travel the same distance and at a mirror-symmetrical alignment of Umlenkrollengruppierungen the same way be offset laterally parallel. The Hüllmaterialbahnen 2 and 3 are deflected twice in the Umlenkrollengruppierungen 4 and 5, and thereby pivoted due to the inclinations of the pulleys 6,7,8 and 9 in opposite directions. By the opposite pivoting of the Hüllmaterialbahnen 2 and 3 about their longitudinal axes they are offset laterally parallel to each other so that they run parallel to each other and after running from the second pulleys 8 and 9 at a distance to each other, so are spread.

The angles of the pulleys 6,7,8 and 9 to the Hüllmaterialbahnen are chosen so that the Hüllmaterialbahnen are offset by approximately the same amount to the outside, so that the distance between the Hüllmaterialbahnen 2 and 3 then the sum of the lateral displacement movements, and Ideally, in a symmetrical displacement movement of the double displacement movement of a Hüllmaterialbahn 2 or 3 corresponds. The angles of the first deflection rollers 6 and 7 and the second deflection rollers 8 and 9 are pairwise mirror-symmetrical to one another, so that in the normal position of the spreading device an identical offset of the Hüllmaterialbahnen 2 and 3 outwards, ie perpendicular to the transport direction results. After leaving the Umlenkrollengruppierungen 4 and 5, the Hüllmaterialbahnen 2 and 3 are guided past an edge position sensing sensor device 11 and then introduced via a threading device 12 in a strand forming unit, not shown, in which, for example, a strand of loose tobacco fibers is placed on the Hüllmaterialbahnen 2 and 3.

In the Fig. 2 is the spreading device from the Fig. 1 to recognize in view from above. The multi-width Hüllmaterialbahn 1 is cut in the train-Schneidwalzengruppierung 10 in two parallel single-width Hüllmaterialbahnen 2 and 3. After cutting, the Hüllmaterialbahnen 2 and 3 are fed in the representation obliquely to the viewer.

First, the lower wrapping material web 2 shown in the illustration is introduced into the first deflecting roller grouping 4 and deflected at the upper side of the first deflecting roller 6 to the underside of the second deflecting roller 8. The upper Hüllmaterialbahn 3 is offset in the transport direction, so after covering a small distance at the first guide roller 7 of the second Umlenkrollengruppierung 5 deflected, again at the top of the first guide roller 7 to the bottom of the second guide roller 9 back. In this case, the angles A of the first deflection rollers 6 and 7 to the feed directions I and III and the angle B of the second deflection rollers 8 and 9 to the removal directions II and IV of the Hüllmaterialbahnen 2 and 3 are identical, so that the feed and the Abführrichtungen I. , II, III and IV in the view from above parallel to each other. Since the Hüllmaterialbahnen 2 and 3 are also deflected at the peripheries of the pulleys 6,7,8 and 9 by the same circumferential angle, the Hüllmaterialbahnen 2 and 3 are also in the feed direction I and III and the discharge direction II and IV in the side view of Fig. 1 aligned parallel to each other.

The Umlenkrollengruppierungen 4 and 5 are offset relative to each other with respect to the transport direction of the Hüllmaterialbahnen 2 and 3, so that they are arranged in a terraced manner due to the obliquely from bottom to top aligned course of Hüllmaterialbahnen 2 and 3. Since Umlenkrollengruppierungen 4 and 5 are arranged offset from one another, the Hüllmaterialbahnen 2 and 3 can be much easier inserted laterally, since the Umlenkrollengruppierungen 4 and 5 are now accessible from the side. The improved accessibility is achieved in particular by the terrace-like arrangement of Umlenkrollengruppierungen 4 and 5, since the Umlenkrollengruppierungen 4 and 5 no longer overlap laterally. The terrace-like arrangement is achieved here by a correspondingly large deflection of the Hüllmaterialbahn 2 on the first guide roller 6 of the first Umlenkrollengruppierung 4 in the circumferential direction and by a corresponding dimensioning of the distance which covers the second Hüllmaterialbahn 3 before entering the second Umlenkrollengruppierung 4. The pulleys 6,7,8 and 9 in the Umlenkrollengruppierungen 4 and 5 are each mounted on one side free-floating, so that the guideways of the Hüllmaterialbahnen 2 and 3 in the Umlenkrollengruppierungen 4 and 5 are laterally open, and the Hüllmaterialbahnen 4 and 5 very easily inserted laterally can be.

If the sensor device 11 senses a deviation of the actual orientation of the Hüllmaterialbahnen 2 and 3 from a desired orientation, which is outside a predetermined tolerance range, the orientation of the Hüllmaterialbahnen 2 and 3 by pivoting the Umlenkrollengruppierungen 4 and 5 individually corrected by means of an adjustment become. The adjusting mechanism is formed by a multi-joint mechanism, which in the Fig. 3 from different Views can be seen. The multi-joint mechanism comprises a plurality of coupling rods 14,15,16,17 and 29, which are pivotally connected to each other in joints 23,24,25 and 26. Further, the multi-link mechanism with the ends of the coupling rods 14,15 and 29 is mounted in pivot bearings 27 and 28 on a machine-fixed holder 18. The guide rollers 6 and 8 are mounted on one side of a support plate 20 free-floating, which in turn is pivotally supported at the free ends of the coupling rods 16 and 17. Further, a linear drive means 19 is provided, which is connected to the remote from the first guide roller 6 end of the support plate 20. The multi-joint mechanism is designed, and in particular has such a positive guide, that the linear drive movement of the drive means 19 is converted into a pivoting movement of the entire multi-joint mechanism with a pivot axis C tangent to the surface of the first guide roller 6. Thereby, the angle of the deflection rollers 6 and 8 are changed relative to the Hüllmaterialbahn 2 deflected thereto, wherein the pivot axis C is ideally in the Hüllmaterialbahn 2, preferably in the central longitudinal axis of the Hüllmaterialbahn 2, so that despite the pivoting of the first guide roller 6 no tensions in the Hüllmaterialbahn 2 and no stresses in the multi-width Hüllmaterialbahn 1 are introduced in the flow. Thus, the pivot axis C, the surface of the guide roller 6 is tangent, it is important that the centers of the pivot bearings 27 and 28 are arranged on the machine-fixed holder 18 on a surface of the guide roller 6 tangent connecting line. If the first Umlenkrollengruppierung 4 is pivoted, the connecting line of the centers of the pivot bearings 27 and 28 does not extend tangentially through the surface of the guide roller 6 after pivoting, but instead approximately through the Pivot axis C. Further, the pivot bearings 27 and 28 must be arranged on the holder 18 so that the distances D of the centers of the pivot bearings 27 and 28 from the centers of the pivot bearings 23 and 25 in the projection in the direction of the connecting line to the distance D between the center of the pivot bearing 22 and the pivot axis C in the direction of the connecting line.

By means of the described adjusting mechanism, in addition to the change in the spread spacing for different widths of the wrapping material webs 2 and 3, it is also possible to realize a regulation of the edge position of the wrapping material webs 2 and 3.

It is important for edge control that the Umlenkrollengruppierungen 4 and 5 can be pivoted independently, while for a pure change of the Spreizabstandes a common adjustment would be conceivable.

The feeding directions I and III of the Hüllmaterialbahnen 2 and 3 are in the Fig. 2 can be seen from above by the dashed lines, which in this case are at the same time the center lines of the Hüllmaterialbahnen 2 and 3. The center lines of the Hüllmaterialbahnen 2 and 3 are parallel to each other and have a simple width of the Hüllmaterialbahnen 2 or 3 corresponding distance from each other. When passing through the Umlenkrollengruppierungen 4 and 5, the Hüllmaterialbahnen 2 and 3 are laterally outwardly offset so that they are then aligned at a greater distance parallel to each other, which can be seen by the dashed lines of the Abführrichtungen II and IV. The Umlenkrollengruppierungen 4 and 5 have guide rollers 6 and 8 or 7 and 9 with an identical distance from each other, an identical Diameter and an identical relative angle to each other. As a result, the Hüllmaterialbahnen 2 and 3 in the Umlenkrollengruppierungen 4 and 5 go through an identical path, and are offset symmetrically outwards with identical mirror-symmetrical alignment of the Umlenkrollengruppierungen 4 and 5 apart from the offset in the transport direction by the same distance.

In the Fig. 4 are the required distances of the pivot bearings 27,28,21,22,23,24,25 and 26 to each other and to the pivot axis C of the Hüllmaterialbahn 2 shown in more detail, which must be complied with, so that the forced operation in a linear adjustment to pivot the Hüllmaterialbahn 2 leads around the pivot axis C. The distances are described below in the position of the non-pivoted Umlenkrollengruppierung, ie the coupling rods 14 and 15 and 16 and 17 are aligned in pairs parallel to each other, and the first coupling rods 14,15 are aligned perpendicular to the second coupling rods 16,17. The distances described below relate respectively to the pivot centers or the pivot axes of the pivot bearings 27,28,21,22,23,24,25 and 26, which correspond in a journal bearing the center axis of the journal. If another type of pivotal mounting is to be realized, the distances must instead be related to the pivot center of the pivot bearing. To simplify the understanding of the invention, the distances are only generally defined as distances of the pivot bearings 27,28,21,22,23,24,25 and 26, wherein actually the respective pivot axes are meant.

Already in the Fig. 3 described distance D should correspond approximately to the width of the to be pivoted Hüllmaterialbahn 2 or 3. In addition, the distance E of the centers should the pivot bearing 22,23 and 25 in the transport direction of the Hüllmaterialbahnen 2 and 3 correspond approximately to the distance D. With an exemplary width of the Hüllmaterialbahnen 2 and 3 of 30 mm, the distances D and E are thus about 30 mm. The distance F of the centers of the pivot bearings 21,24,26 to the centers of the pivot bearings 22,23 and 25 should be much greater than the distance E, in particular, the distance F should be sized 4 to 10 times as large as the distance E. The distances G between the centers of the pivot bearings 21 and 24 and between the center of the pivot bearing 27 and the pivot axis C in the projection perpendicular to the transport direction of the Hüllmaterialbahnen 2 and 3 should be identical and correspond to approximately 1.5 times the distance D. , The distance H between the centers of the pivot bearings 23 and 25 should also be identical to the distance H between the centers of the pivot bearings 27 and 28, which should also be approximately 2 times the distance D.

So that the overall system is not overdetermined, one of the pivot bearings 23,24,25 or 26 can be omitted, the elimination of the pivot bearing 26 would be particularly suitable. On the other hand, due to the deliberate overdetermination of the overall system, additional stability and rigidity can also be introduced into the multi-joint mechanism. Since the adjustment movements are more likely to be seen in smaller adjustment angles, the increased stiffness for the adjustment is not a disadvantage.

The proposed solution can ensure that the pivot axis C of the Hüllmaterialbahn 2 remains during the pivoting of the Umlenkrollengruppierung 4 in the Hüllmaterialbahn 2 and does not run out of this. It can the deflection roller 6 with the adjacent Hüllmaterialbahn 2 and arranged therein pivot axis C are slightly moved in the transport direction or against the transport direction of the Hüllmaterialbahn 2. Furthermore, the pivot axis C in the Hüllmaterialbahn 2 also slightly laterally migrate out of the longitudinal center axis of the Hüllmaterialbahn. It is only important that the pivot axis C remains in the Hüllmaterialbahn 2, so that stresses are introduced only in a negligible order of magnitude in the flow and caster of the Hüllmaterialbahn 2. Due to the avoided stresses, the edge position of the Hüllmaterialbahn 2 can be controlled considerably more accurate and the Hüllmaterialbahnlauf is much quieter and more controlled.

It is of particular importance for the multi-joint mechanism that the distances D are identical and the distances E are identical, so that the pivot axis C of the adjusting movement extends approximately in the adjacent to the first guide rollers 6 and 7 Hüllmaterialbahn 2 or 3. The radius of the adjustment corresponds to the distance between the pivot bearings 25 and 28 and between the pivot bearings 23 and 27, which corresponds to the distance between the pivot axis C and the pivot bearing 22. As a result, the pivot axis C is at least substantially closer to the applied to the first guide rollers 6 or 7 Hüllmaterialbahnen 2 or 3, as was possible with the known in the prior art solutions.

By the described multi-joint mechanism, the course of Hüllmaterialbahnen 2 and 3 can be controlled much more accurate and designed much quieter. The described multi-link mechanism provides regardless of the staggered arrangement of Umlenkrollengruppierungen 4 and 5 or the terraced arrangement thereof due to the reduced voltages in the Hüllmaterialbahnen 2 and 3 is a significant improvement of the Hüllmaterialbahnlaufs and the edge control of Hüllmaterialbahnen 2 or 3, and can thus be regarded as an independent inventive concept.

In the Fig. 5 and Fig. 6 is to recognize a further developed spreading device, which has an already described identical multi-joint mechanism and two Umlenkrollengruppierungen 4 and 5. The advanced solution differs from the embodiment of the Fig. 3 in that the drive device 19 is formed here by two independently controllable servomotors, which are each connected via an eccentric gear 30 with a coupling rod 16 of the Umlenkrollengruppierungen 4 and 5 associated multi-joint mechanisms. In this case, each of Umlenkrollengruppierungen 4 and 5 is associated with its own inventively designed multi-link mechanism, so that the Umlenkrollengruppierungen 4 and 5 can be adjusted separately from each other via their own coupling rod 16. The in the presentation of the Fig. 5 right and in the representation of Fig. 6 Rear Umlenkrollengruppierung 5 has recognizable its own and identical multi-joint mechanism, which was not provided with reference numerals for clarity.

Furthermore, a partition 31 is provided with one or more recesses 34 which separates an operator side 32 from a drive side 33. The spreading device engages with the coupling rods 16 and 17, the recesses 34, so that the Umlenkrollengruppierungen 4 and 5 are arranged on the operator side 32 of the partition wall 31, while the servo motors, the eccentric gear 30, the coupling rods 14 and 15 and the coupling rods 16 and 17 with the recesses 34 not cross sections arranged on the drive side 33 of the system are. As a result, the operator can be intrinsically safe from accidental engagement with the multi-link mechanisms and the servo motors on the drive side 33. Furthermore, the components arranged on the drive side 33 can be protected from mechanical influences on the operator side 32. For this purpose, it is of particular advantage that the servomotors are connected via the eccentric gear 30 to the ends of the coupling rods 16, which the drive movement through the recesses 34 of the partition 31 through the arranged on the operator side support plates 20 and the deflection rollers 6 held thereon, 7.8 or 9 transferred. The servo motors can thereby be arranged at a distance from the carrier plates 20 arranged on the operator side 32 and the deflection rollers 6, 7, 8 and 9 on the drive side 33.

Dir Umlenkrollengruppierungen 4 and 5 are also arranged offset to one another in the transport direction of the Hüllmaterialbahnen 2 and 3, the Umlenkrollengruppierungen 4 and 5 are not terraced, but instead are arranged in approximately vertical orientation of the support plates 20 at a distance side by side.

Claims (18)

Spreading device for two or more Hüllmaterialbahnen (2,3) for the production of at least two parallel strands of products of the tobacco processing industry with - One of the number of Hüllmaterialbahnen (2,3) corresponding number of Umlenkrollengruppierungen (4,5), each with individual pulleys (6,7,8,9), on each of which a Hüllmaterialbahn (2,3) is deflected on different sides , in which the pulleys (6, 7, 8, 9) are inclined in such a way that the wrapping material web (2, 3) deflected therefrom emerges from the pulley grouping (4, 5) offset laterally in parallel with respect to a feed direction (I, III),
characterized in that - The Umlenkrollengruppierungen (4,5) offset in the transport direction of the Hüllmaterialbahnen (2,3) are arranged to each other. Spreading device according to claim 1, characterized in that - The Umlenkrollengruppierungen (4,5) are arranged one above the other like a terrace. Spreading device according to one of the preceding claims, characterized in that - The pulleys (6,7,8,9) each have a Umlenkrollengruppierung (4,5) have an identical diameter and an identical relative angle to each other. Spreading device according to one of the preceding claims, characterized in that - The distances between the pulleys (6,7,8,9) in each case a Umlenkrollengruppierung (4,5) in the different Umlenkrollengruppierungen (4,5) are identical. Spreading device according to one of the preceding claims, characterized in that - The feed direction (I, III) and the discharge direction (II, IV) of the Hüllmaterialbahnen (2,3) to the Umlenkrollengruppierungen (4,5) and are aligned parallel to each other. Spreading device according to one of the preceding claims, characterized in that - The Umlenkrollengruppierungen (4,5) each about a by the at the first guide roller (6,7) adjacent Hüllmaterialbahn (2,3) extending pivot axis (C) are pivotable. Spreading device according to claim 6, characterized in that - The pivot axis (C) through the longitudinal center axis of the Hüllmaterialbahn (2,3) extends. Spreading device according to claim 6 or 7, characterized in that - The Umlenkrollengruppierungen (4,5) are each adjustable by means of an adjusting device formed by a multi-joint mechanism. Spreading device according to claim 8, characterized in that - The adjusting movement transmitting multi-joint mechanism is mounted with two first coupling rods (14,15) in two stationary pivot bearings (27,28). Spreading device according to claim 9, characterized in that - The stationary pivot bearing (27,28) are arranged such that their pivot axes lie on a straight line which extends through the at the first deflection roller (6,7) adjacent Hüllmaterialbahn (2,3). Spreading device according to one of claims 9 or 10,
characterized in that - The first coupling rods (14,15,29) via at least two second coupling rods (16,17) are coupled together, at the ends of a support plate (20) in each case a pivot bearing (21,22) is pivotally mounted, wherein - The pulleys (6,7,8,9) are arranged on the support plate (20). Spreading device according to claim 11, characterized in that - The second coupling rods (16,17) are each mounted in pivot bearings (23,24,25,26) relative to the first coupling rods (14,15,29), and - At least the stationary pivot bearings (27,28) nearest pivot bearings (23,25) between the first and second coupling rods (14,15,16,17,29) are arranged such that they perpendicular to the transport direction of the Hüllmaterialbahn (2, 3) have a distance (D) to the stationary pivot bearings (27,28), which the distance (D) between the pivot axis (C) of the Hüllmaterialbahn (2) and the nearest pivot bearing (22) between the support plate (20) and a the second coupling rods (16,17) perpendicular to the transport direction of the Hüllmaterialbahn (2) corresponds. Spreading device according to claim 11 or 12, characterized in that - The distance (D) between the pivot axis (C) and the nearest Schenklager (22) between the support plate (20) and one of the second coupling rods (16,17) perpendicular to the transport direction of the Hüllmaterialbahn (2) the distance (E) between the stationary pivot bearings (27,28) and the nearest pivot bearings (23,25) between the coupling rods (14,15,16,17,29) and the distance (E) between the pivot axis (C) and the nearest pivot bearing (22) between the support plate (20) and one of the second coupling rods (16,17) in the transport direction of the Hüllmaterialbahn (2) corresponds. Spreading device according to one of claims 11 to 13,
characterized in that - The second coupling rods (16,17) are each mounted in pivot bearings (23,24,25,26) relative to the first coupling rods (14,15,29), and - The distance (H) between the pivot bearings (23,24,25,26) of the second coupling rods (16,17) corresponds to the distance (H) between the stationary pivot bearings (27,28). Spreading device according to one of claims 11 to 14,
characterized in that - The second coupling rods (16,17) are each mounted in pivot bearings (23,24,25,26) relative to the first coupling rods (14,15,29), and - The distance (G) between the pivot axis (C) of the Hüllmaterialbahn (2) nearest stationary pivot bearing (27) and the pivot axis (C) of the Hüllmaterialbahn (2) the distance (G) between the pivot bearing (22) between the support plate (20) and one of the second coupling rods (16,17) which the pivot axis (C) next is, to the pivot bearing (23) between one of the first and second coupling rod (14,15,16,17,29), which is arranged next to the stationary pivot bearing (27) next corresponds. Spreading device according to one of claims 11 to 15,
characterized in that - The Umlenkrollengruppierungen (4,5) by means of one of the second coupling rods (16,17) coupled drive means (19) are adjustable. Plant with a spreading device according to claim 16,
characterized in that - The plant has a partition wall (31), - The spreader extends through the partition wall (31) therethrough, and - The Umlenkrollengruppierungen (4,5) on an operator side (32) of the partition (31), and - The drive means (19) on a drive side (33) of the partition wall (31) are arranged. Plant according to claim 17, characterized in that - The partition wall (31) has recesses (34), and - The multi-joint mechanism, the recesses (34) of the partition wall (31) with the second coupling rods (16,17) passes through, and - The first coupling rods (14,15) of the multi-joint mechanism on the drive side (33), and - The support plates (20) of the multi-joint mechanism on the operator side (32) of the partition wall (31) are arranged.

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