DEVICE AND METHOD FOR SEPARATE ROD-SHAPED SEGMENTS FROM A STRAND OF THE TOBACCO PROCESSING INDUSTRY

Description

[0001] The present invention relates to a device for separating a rod-shaped segment of the tobacco processing industry from a strand having the features of the preamble of claim 1 and to a method for separating a rod-shaped segment of the tobacco processing industry from a strand having the features of the preamble of claim 9.

[0002] Such devices and methods are used in a strand unit in which the rod-shaped segments are cut from a continuous strand at a predetermined length. Furthermore, such devices and methods are also used to cut segments from a strand that has a finite length twice or multiple times that of the segments. For the purposes of the invention, the term "strand" refers to both continuous strands and finite strands, i.e., rods with a length multiple of that of the segments.

[0003] Such segments are used, for example, in so-called heat-not-burn products (HNB products). During the manufacture of HNB products, the segments are separated and assembled in a predetermined arrangement and bonded together using an adhesive wrapping strip. Such segments and HNB products are known, for example, from WO 2016 / 155958 A1.

[0004] One type of segment in the HNB product is formed by a tubular body made of one or more layers of cellulose with a total mass of 200 g / m². Thus, the tubular body is designed as a relatively thick and stiff cardboard with comparatively high cut resistance.

[0005] To ensure that the finished products assembled from the segments have the highest quality and smoothest surface, the cut edges of the segments should be as burr-free as possible. Furthermore, it is important for the segments to have the highest quality and burr-free cut edges possible for subsequent transport, storage, and processing, as otherwise they can get caught on the burr during transport and processing and build up against each other.

[0006] The segments are separated from the strand by means of a cutting unit with a cutting blade with one or more cutting edges, which penetrates into the strand with increasing depth during the cutting process and completely separates the segment from the strand across the entire cross-sectional area.

[0007] The cutting knife can be arranged on a rotating knife holder and have a cutting edge that extends radially and diagonally outwards. The knife holder is arranged with the cutting knife in such a way that the cutting edge cuts through the strand completely across the entire cross-sectional area, i.e. across the entire diameter, during the rotating movement. Such a cutting knife is preferably used for separating the segments from an endless strand in the strand unit. During the cutting process, the endless strand is fixed in the area of the cutting cutting knife by a strand holder in the form of a tube with a slot that forms a counter-bearing. The tube with the slot is aligned during the cutting process in such a way that the cutting knife moves the strand through the slot during the cutting process and cuts the strand in the process.

[0008] Alternatively, the cutting blade can also be in the form of a round disk with a circular cutting edge. In this case, the cutting blade is arranged in a fixed position and its cutting edge is directed towards the outer surface of a transport drum in a drum run. The outer surface of the drum is provided with a plurality of troughs, in each of which a finite strand of several times its length is transported. Furthermore, the drum has one or more circumferential grooves which run through the troughs and divide the troughs into several sub-troughs. The cutting blade is arranged in such a way that its cutting edge plunges into the groove so that the strands held in the troughs are cut into two or more segments as they pass the cutting blades. If several cutting blades are provided, such as three cutting blades, the respective strand can in this case be cut into four segments in one revolution of the drum.In this case, the troughs or partial troughs form a strand holder that forms a counter bearing for the strand, which in this case is finite, during the cutting process.

[0009] What both designs have in common is that the cutting blade moves completely through the strand in an arc-shaped cutting movement, penetrating the strand on one side while overcoming the cutting resistance, then cutting through the strand over the entire diameter until it finally exits the strand again on an exit side.

[0010] In order to achieve a high-quality cut while maintaining a high production speed, the cutting knives must optionally be reground, as disclosed in EP 0 736 263 A1. In addition, the cutting edge must penetrate the strand with a certain cutting force in order to overcome the cutting resistance of the strand. If a correspondingly dimensionally stable material with high cutting resistance is used, comparatively high cutting forces must be applied. These high cutting forces, in turn, promote the formation of burrs on the cutting edge when the segments are separated, since the force jumps when the cutting edge enters and exits the strand are very high, and the material is therefore dragged along a slight distance.If the segment is a pipe, this entrainment results in the material protruding slightly into the hollow space of the pipe body on the inlet side and slightly outwards on the outlet side. If the segments are to be cut burr-free, this can only be achieved with considerable effort and, under unfavorable circumstances, a minimal residual burr cannot be completely avoided. This effort also leads either to a reduction in production speed if the cutting speed is reduced, or to an increase in manufacturing costs if, for example, the cutting blades have to be resharpened particularly frequently or particularly expensive and high-quality cutting blades have to be used. Furthermore, it would also be possible to detect defective segments and then reject them, which would, however, reduce the production capacity of non-defective segments.

[0011] Against this background, the object of the invention is to provide a device and a method for separating rod-shaped segments of the tobacco processing industry from a strand, which should enable a cost-effective production of segments with a cutting edge that is as burr-free as possible while at the same time achieving a high production capacity.

[0012] According to the invention, a device having the features of claim 1 and a method having the features of claim 9 are proposed to achieve the object. Further preferred developments can be found in the subclaims, the figures and the associated description.

[0013] According to claim 1, a device for separating a rod-shaped segment of the tobacco processing industry from a strand is proposed, having the following features: a cutting unit with a cutting blade, and a strand holder which forms a counter-bearing for the strand during the separation of the segment by the cutting blade, wherein the cutting unit is designed and configured such that the cutting blade cuts the strand over the entire diameter during the cutting process, wherein a manipulation unit is provided which manipulates the cut surface of the segment and is arranged downstream of the cutting unit with respect to a transport direction of the segment.According to claim 9, a method for separating a rod-shaped segment of the tobacco processing industry from a strand is proposed, having the following features: a cutting unit with a cutting blade, and a strand holder which forms a counter-bearing for the strand during the separation of the segment by the cutting blade, wherein the cutting unit is designed and configured such that the cutting blade cuts the strand over the entire diameter during the cutting process, wherein a manipulation unit is provided which is arranged downstream of the cutting unit in relation to a transport direction of the segment and in which the cut surface of the separated segment is reworked.The achievement of the invention lies in the fact that the quality of the segments is not achieved by improving the cutting process with the cutting edge of the cutting blade using the complex measures described above. Instead, burr formation on the segment is consciously accepted. However, this is actively eliminated or at least minimized by the manipulation unit following the cutting process. This allows burr-free segments to be produced at a high cutting speed, which in turn enables high production capacity. The term "cutting surface" should not be understood solely as the pure end face of the segment.The cutting surface within the meaning of the invention also includes the material of the segment which has been displaced by the cutting process and raised laterally towards the burr, thus extending into the material for a few tenths of a millimetre and leading to the deformation of the edge side of the segment.

[0014] It is further proposed that a combination unit be provided downstream of the manipulation unit with respect to the transport direction of the segment, in which the segments are combined with one or more other segments in a coaxial arrangement to form bars of greater length. The proposed arrangement of the manipulation unit is advantageous in that it eliminates the burr before the segments are joined in the combination unit, which in turn has the advantage that the segments, in the combination (i.e., in the adjacent arrangement), form a bar with a high-quality surface.

[0015] It is further proposed that a wrapping unit be provided, arranged downstream of the manipulation unit and / or the combination unit with respect to the transport direction of the segment, in which wrapping unit the segment is connected to one or more further segments by a wrapping strip to form a rod of greater length. With the proposed solution, the wrapping strip can be placed very tightly around the segments due to the absence of any burrs, and the segments can be connected to form a rod with a cylindrical surface with a very high surface quality, i.e., without any unevenness such as bumps or dents.

[0016] It is further proposed that the manipulation unit comprise a non-abrasive forming unit. The non-abrasive forming unit allows any burr present at the edge of the segment to be removed to form a homogeneous surface. The material is not torn or severed, but instead is forced into the defined shape in a displacement process without any loss of material. Ideally, this shape corresponds to, or at least approximates, the shape of the cut segment without deformation of the edge or cut surface.

[0017] The forming unit can intentionally have a forming surface that forces the segment into a defined shape, at least in the area of the cut end, under a pressure force. The forming surface forms a die, which, through its negative shape, defines the shape of the segment after it passes through the forming unit.

[0018] The forming surface can be formed by an inner or outer cone, which is embossed axially and / or radially onto the cutting surface of the segment. The proposed solution has the advantage that the edge is formed continuously, i.e., steplessly, due to the conicity of the forming surface, thus reducing material damage. Such a solution is particularly advantageous when the segments are circular-cylindrical or even annular-cylindrical, i.e., tubular, and the inner or outer cone is formed by a centering mandrel or ring with a correspondingly conical annular surface. This simultaneously centers the segments when the cone is inserted or placed on top, and thus deformed and loaded evenly over their circumference.

[0019] Furthermore, the forming surface can also be formed by a fixed rolling surface, on which the segments are forced to roll around their longitudinal axes by a frictional engagement. During the rolling movement, the segments roll around the circumference, thereby pushing any radial burr back into the segment material. The segments roll practically automatically on the rolling surface to form a smooth, cylindrical surface. Since the proposed solution requires no further process step and only requires a rolling surface provided on a drum, this solution can be implemented particularly easily. Furthermore, the rolling movement enables a particularly uniform and gentle forming process of the cut surface of the segment.

[0020] It is further proposed that the fixed rolling surface have a guideway with a width corresponding to the length of the segments, wherein the guideway is arranged such that the segments execute a guided rolling movement in the guideway transverse to their longitudinal axes. The guideway is formed here by a recess or groove that is precisely wide enough for the segments to be guided therein with their longitudinal axes aligned perpendicular to the longitudinal direction of the guideway. As a result, the edges of the segment are particularly well shaped in the base of the guideway by the correspondingly inclined inner edges of the guideway.

[0021] It is further proposed that the segments be held in receptacles on the outer surface of a cylindrical drum that can be driven in rotation about a rotational axis, and that the rolling surface be formed by a curved counter-surface arranged concentrically to the rotational axis. Due to the proposed curved and concentric arrangement of the rolling surface, the distance between the rolling surface and the outer surface of the drum or the base surfaces of the receptacles is essentially constant during the rotary movement of the drum, and the segments roll under the most uniform load possible.

[0022] The counter surface can preferably be arranged at a distance from the base of the receptacles that corresponds to the diameter of the segments minus 0.2 to 1.5 mm. The undersize of 0.2 to 1.5 mm exerts a pressure on the segments that increases the frictional engagement, which promotes the rolling movement of the segments on the rolling surface and prevents them from slipping.

[0023] The distance can be designed to converge in the transport direction, so that the applied contact pressure increases continuously or is increased slowly in a material-friendly manner. The distance only converges slightly, so that the applied pressure increases only very slightly and slowly. For example, with a developed length of the counter surface of approximately 50 to 100 mm, the distance can be reduced from an undersize of 0.2 mm on the inlet side to an undersize of 0.6 or 0.8 mm on the outlet side.

[0024] Furthermore, the rolling surface can be designed with adjustable spacing and / or angle, allowing it to be aligned once to suit the segments to be produced before the device is put into operation. The rolling surface can be designed to pivot both about a pivot axis aligned parallel to the drum's rotational axis and relative to a pivot axis aligned perpendicular to it. This allows various converging or diverging orientations of the rolling surface relative to the drum's outer surface to be achieved. Furthermore, different pressure forces of the segments on the rolling surface can be achieved by adjusting the distance of the rolling surface.

[0025] Furthermore, the manipulation unit can also include an abrasive shaping unit, which allows the shape of the segments to be subsequently modified and reworked by removing material from the cutting surface. Furthermore, the manipulation unit can also include a laser processing unit. The proposed solution allows the segments to be reworked very precisely, even at specific points.

[0026] It is further proposed that the manipulation unit comprise a moistening unit by means of which the cutting edge of the cutting blade can be moistened before the cutting process and / or the segment at a cutting surface can be moistened after the cutting process. Through moistening, the cutting process can be improved without having to use higher-quality cutting blades or having to change the cutting speed, as the cutting edge is essentially lubricated and the adhesive forces between the segment and the cutting blade are thereby reduced. This can improve the cutting process itself and counteract the tendency towards burr formation. Furthermore, the cut surfaces of the segments can be moistened, which consequently simplifies their subsequent shaping in the shaping unit. The moisture increases the elasticity of the composite of the fibers of the segments, thereby promoting deformability.Instead of using the cutting blades, the edge sections of the segments can alternatively be moistened after the cutting process using a downstream moistening unit which is arranged upstream of a forming unit.

[0027] The moistening unit is preferably arranged upstream of an abrasive or non-abrasive forming unit with respect to the transport direction of the segments, so that the cutting surface is moistened by the post-processing, in particular by the forming unit.

[0028] The invention will be explained below using preferred embodiments with reference to the attached figures. Fig. 1 two segments, each with a burr after cutting a double-length strand; and Fig. 2 a segment with a conical shaping element; and Fig. 3 the conical shaping element viewed from the front; Fig. 4 a segment with a double-conical shaping element; and Fig. 5 a segment with a take-off element in a first embodiment; and Fig. 6 a segment with a take-off element in a second embodiment; and Fig. 7 a drum with a non-abrasive shaping unit; and Figs. 8 and 9 a drum with several segments and an abrasive shaping unit in different embodiments; and Figs. 10 and 11 a drum with different non-abrasive shaping units; and Fig. 12 a drum with a segment and a laser processing unit.

[0029] In the Figure 1 Two segments 1 and 2 can be seen, which are formed by cutting a double-length strand of finite length, e.g. by means of a Figure 10to be recognized cutting unit 32. However, it is also conceivable to cut the segments 1 and 2 and further subsequent segments from an endless strand. The cutting unit 32 has a cutting blade, which has a cutting edge that is aligned in such a way that it cuts through the strand over the entire cross-section. In this case, the cutting blade can either execute a rotational movement to the strand, as is the case, for example, with the blade carrier described at the beginning, or the cutting blade can be stationary, and the strand is moved to the cutting edge, as is the case, for example, when cutting the endless strands on a Figure 10 drum 19 which can be recognized.

[0030] The strand can, for example, be tubular and made of a cellulose material with a thickness of approximately 200 g / m², and thus has a comparatively high cutting resistance. This high cutting resistance results in a slight burr 5 and 6 being formed on the cutting surfaces 3 and 4 of segments 1 and 2 on the inlet side of the cutting blade, directed towards the radially inner side, and a slight burr 5 and 6 being formed on the outlet side of the cutting blade, directed towards the radially outer side. The burr 5 and 6 directed towards the radially outer side is particularly disruptive, as it would result in an outward-facing elevation in the finished product. Contrary to the realization that this outer burr 5 and 6 is disruptive, it is deliberately accepted here in order to achieve a high cutting speed, and a manipulation unit, described below, is provided, with which the burrs 5 and 6 are actively removed afterwards.

[0031] Cutting surfaces 3 and 4 are understood here as the frontal surfaces as well as the adjacent circumferential sections, which together with the frontal surfaces form the circular edge of the cutting surface.

[0032] The manipulation unit can be formed by one or more of the following units, one in the Figures 2 to 7 and 10 and 11 shown non-abrasive forming unit, one in the Figures 8 and 9 shown abrasive forming unit, one in the Figure 12 laser processing unit 30 or a humidification unit to be recognized.

[0033] In the Figures 2 and 3The non-abrasive forming unit is designed in the form of a hood-shaped cone 7 with an inner cone 8, which is dimensioned such that it extends from an outer radius that is larger than the outer diameter of segments 1 and 2 to an inner radius that is smaller than the outer diameter of segments 1 and 2. The cone 7 is embossed coaxially onto the cutting surface 3 for post-processing of the cutting surface 3 and for removing the burr 5. As a result, the burr 5 is displaced radially inward. The segment 1 can be formed from a solid material or as a tubular body.

[0034] In the Figure 4a similar cone 7 can be seen as a non-abrasive forming unit, which additionally has an inner axially projecting dome 9 with a concentric outer cone 10 arranged thereon. The segment 1 is designed here as a tubular body and has a cavity into which the cone 7 with the dome 9 moves for the post-processing of the cutting surface 3. The outer cone 10 forms a concentric abutment for the inner side of the annular cutting surface 3 of the segment 1 during the post-processing process, whereby the radially inwardly directed portion of the burr 5 can also be post-processed, and it can also be prevented that the segment 1 bends inwards on the edge side during forming.

[0035] In the Figure 5a further alternative embodiment of a non-abrasive forming unit can be seen, which is formed by a take-off element 11 which can be moved axially parallel to the longitudinal axis of the segment 1 and which is shaped and arranged in such a way that it moves over the burr 5 during the axial movement and in the process deforms the burr 5. To prevent the segment 1 from shifting axially, a stop 12 is provided, against which the segment 1 rests with the cutting surface 3 in the direction of the axial movement of the take-off element 11. Alternatively, a second take-off element 11 moving in the opposite direction can also be provided to compensate for the axial forces, provided that a burr 5 also needs to be reworked on the opposite edge side of the segment 1, as is the case, for example, with segments 1 cut out centrally from a strand with two cutting surfaces 3.

[0036] In the Fig. 6Another example of a non-abrasive forming unit can be seen, which is formed by a clamp 13 with two clamping arms 14 and 15 and a radially inner, axially projecting mandrel 18. The clamping arms 14 and 15 have radially inward-directed projections 16 and 17 at their ends, which are aligned and arranged such that they point towards an end section of the mandrel 18 in a clamping position. For the post-machining of the burr 5, the clamp 13 is inserted with the mandrel 18, with the clamping arms 14 and 15 pivoted outwards, into the end section of the, in this case, tubular segment 1. The clamping arms 14 and 15 are then pivoted towards one another in the direction of the mandrel 18 until the wall of the tubular segment 1 is arranged with a slight play in the annular gap between the end faces of the projections 16 and 17 and the mandrel 18.Subsequently, the clamp 13 is pulled axially toward the outside in the direction of the longitudinal axis of the segment 1, and the burr 5 is pulled flat through the narrow annular gap between the mandrel 18 and the clamping arms 14 and 15. The mandrel 18 forms an abutment, similar to the dome 9 in the . Figure 4 and prevents the ridge 5 from bending radially inwards during deformation.

[0037] In principle, the system described in the examples of Figures 2 and 4 provided cone 7 or also the one in the embodiment of the Figure 6 The clamp 13 shown in the drawing also performs a rotational movement relative to the longitudinal axis of the segment 1 during the reworking process, whereby the burr 5 is deformed and pushed away in both the axial and radial directions.

[0038] In the Figure 7A further alternative embodiment of a non-abrasive forming unit is shown, in which the segments 1 are held in receptacles provided on a lateral surface of a drum 19 that can be driven to rotate. The receptacles are aligned such that the segments 1 are arranged with longitudinal axes aligned parallel to the axis of rotation of the drum 19. Furthermore, a guide 20 is provided with a curved rolling surface 27 concentric with the axis of rotation of the drum 19, past which the segments 1 are guided during the rotation of the drum 19. The rolling surface 27 of the guide 20 can be designed as shown in the right-hand illustrations of the Figure 7can be seen, have various shapes. For example, it can have an excess width 24 compared to the length of the segments 1, so that a pressing force can be exerted on the segments 1 over their entire length, and the burr 5 is flattened by the rolling surface 27. Furthermore, the guide 20 can also perform an oscillating transverse movement 23 directed in the direction of the longitudinal axes of the segments 1, by which the burr 5 is displaced laterally. Alternatively, the rolling surface 27 can also have a radius 22 projecting laterally and inwards beyond the cutting surface 3, by means of which the burr 5 is embossed radially inwards. Furthermore, a brush 21 can also be provided on the rolling surface 27, by means of which the burr 5 is elastically brushed inwards.

[0039] In the Figure 8an embodiment of an abrasive shaping unit can be seen in which the burr 5 is removed by a mechanical rotary tool 25, e.g. in the form of a grinding wheel or a milling cutter. The rotary tool 25 is stationary in a predetermined orientation and position in which the segments 1, as the drum 19 rotates, are inevitably guided past a working surface of the rotary tool 25 with the burr 5 and come into contact therewith. The burr 5 is actively removed by abrasive material removal, and the cut surface 3 is reworked into a shape predetermined by the shaping of the working surface of the rotary tool 25. In addition, the burr can also be reshaped by a non-abrasive displacement process due to the pressure exerted by the rotary tool 25.The rotary tool 25 rotates around an axis of rotation aligned parallel to the axis of rotation of the drum 19 in the same direction of rotation, which allows the machining speed of the surface of the segment 1 to be increased, as this increases the relative speed of the working surface to the segments 1. Thus, the burr 5 can be reworked in a very small arc section of the rotational movement of the drum 19. The working surface of the rotary tool 25 can be differently aligned or profiled depending on the shape, orientation, and size of the burr 5 to be reworked.

[0040] In the Figure 9 Another form of an abrasive forming unit can be seen, in which a fixed blade 33 is provided, aligned according to the burr 5 to be removed. The segments 1 are guided past the blade 33 with the burr 5 as the drum 19 rotates, and the burr 5 is actively removed.

[0041] In the Figure 101 shows a further alternative embodiment of a non-abrasive forming unit in the form of a static guide surface 26 with a rolling surface 27 arranged concentrically to the axis of rotation of the drum 19 and at a substantially constant distance. Furthermore, a cutting unit 32 is provided, arranged upstream of the rolling surface 27 with respect to the transport direction T of the drum 19, which cuts the strand into two or more segments 1. Furthermore, the rolling surface 27 has a starting bar 32 on the inlet side, which projects into the transport path of the segments 1. The rolling surface 27 is arranged here at a distance from the base of the receptacles of the drum 19 which is the diameter of the segments 1 minus 0.2 to 1.5 mm. The distance is thus deliberately undersized compared to the diameter of the segments 1, which is further reduced by the starting bar 32 on the inlet side.Due to the starting bar 32 and the selected spacing, the segments 1 are forced to roll on the rolling surface 27 due to the rotational movement of the drum 19. During this rolling movement, the segments 1 are compressed due to the undersize and pressed against the rolling surface 27, so that the burr 5 is automatically pushed away. A guide track 31 with a width B corresponding to the length L of the segments 1 can be provided on the rolling surface 27, in which the segments 1 roll laterally guided during the deformation movement.

[0042] Alternatively, the guide surface 26 can also be provided on a rotatably mounted roller with a corresponding profile, as shown in the right illustration of the Figure 10 can be seen.

[0043] In the Figure 11A further alternative embodiment of a non-abrasive forming unit can be seen, in which the guide surface 26 is again arranged on a rotatably driven roller pressed against the outer side of the segments 1. Additionally, a mandrel 28 inserted into the segment 1 is provided as an abutment, so that the cutting surface 3 with the burr 5 is compressed in a gap between the roller and the mandrel 28 and displaced into a tubular shape.

[0044] In the Figure 12 A further embodiment of the manipulation unit can be seen in the form of a laser processing unit 30 and a roller 29 that can drive the segments 1 to rotate about their longitudinal axes. The laser processing unit 30 directs a laser beam onto the lateral edge of the segments 1, thereby cutting off the burr 5.

[0045] Furthermore, the manipulation unit can have a humidification unit with which the cut surface 3 is humidified before post-processing. This humidification unit can, for example, be in the form of a liquid reservoir into which the cutting blade(s) dip before the cutting process, so that the moisture is already introduced into the cut surface 3 by the cutting blade during the cutting process. If this is not possible, the cut surface 3 can also be actively moistened after the cutting process. It is important here that the cut surface 3 is humidified before post-processing so that the moisture has the positive effect of increasing the elasticity of the cut surface 3 for the post-processing.

[0046] Alternatively, the strand can also be moistened in the area of the cutting area of the cutting blade before the cutting process, whereby moistening of the strand outside the cutting area should be avoided.

[0047] The manipulation unit can comprise one or more of the described units. For example, it is advisable to combine a non-abrasive forming unit with an upstream moistening unit. Furthermore, a non-abrasive forming unit can also be combined with a downstream abrasive forming unit, for example, to abrasively remove residual burr that has not been reshaped by the non-abrasive forming unit, thereby further improving the dimensional accuracy of segments 1.

[0048] The manipulation unit is preferably arranged upstream of a combination unit and a wrapping unit with respect to the transport direction T of the segments 1, so that the already reworked segments 1 with the qualitatively improved surface are combined with the other segments 1 in the combination unit and connected to one another by the wrapping strip to form a finished product.

[0049] If finished products of double or multiple lengths, i.e., strands of double or multiple lengths, are to be cut, the inventive solution is also applicable. In this case, the cut surface of the finished product can also be post-processed, which can also improve the surface quality of the finished product.

Claims

1. Device for separating a rod-shaped segment (1, 2) in the tobacco processing industry from a strand, comprising - a cutting unit (32) with a cutting blade, and - a strand holder which forms a counter bearing for the strand during the separation of the segment by the cutting blade, wherein - the cutting unit (32) is designed and adapted in such a way that the cutting blade cuts the strand over its entire diameter during the cutting operation, characterized in that - a manipulation unit manipulating the cut surface (3, 4) of the segment is provided, which is arranged downstream of the cutting unit with respect to a transport direction (T) of the segment (1, 2) and is suitable for actively removing a burr (5, 6) from the cut surface (3, 4) afterwards.

2. Device according to claim 1, characterized in that - the manipulation unit comprises a non-abrasive forming unit.

3. Device according to claim 2, characterized in that - the non-abrasive forming unit comprises a forming surface which presses the segment (1, 2) into a defined shape under a contact force at least in the region of a cut surface (3, 4).

4. Device according to claim 3, characterized in that - the forming surface is formed by an inner or outer cone (8, 10) which is stamped axially and / or radially onto the cut surface (3, 4) of the segment (1, 2).

5. Device according to any one of the preceding claims, characterized in that - the manipulation unit comprises an abrasive forming unit.

6. Device according to any one of the preceding claims, characterized in that - the manipulation unit comprises a laser processing unit.

7. Device according to any one of the preceding claims, characterized in that - the manipulation unit comprises a moistening unit by means of which the cutting edge of the cutting blade can be moistened before the cutting operation and / or the segment (1, 2) can be moistened at a cut surface (3, 4) after the cutting operation.

8. Device according to claim 7 and according to any one of claims 2 to 6, characterized in that - the moistening unit is arranged upstream of an abrasive or non-abrasive forming unit with respect to the transport direction (T) of the segments (1,2).

9. Method for separating a rod-shaped segment (1,2) in the tobacco processing industry from a strand, comprising - a cutting unit (32) with a cutting blade, and - a strand holder which forms a counter bearing for the strand during separation of the segment (1,2) by the cutting blade, wherein - the cutting unit (32) is designed and adapted such that the cutting blade cuts the strand over its entire diameter during the cutting operation, characterized in that - a manipulation unit is provided downstream of the cutting unit in relation to a transport direction (T) of the segment (1, 2), in which the cut surface (3, 4) of the separated segment (1, 2) is reworked for subsequent removal of a burr.

10. Method according to claim 9, characterized in that - the manipulation unit comprises a non-abrasive forming unit.

11. Method according to any one of claims 9 or 10, characterized in that - the forming unit comprises a forming surface which presses the segment (1, 2) into a defined shape under a contacting force at least in the region of the cutting surface (3, 4).

12. Method according to any one of claims 9 to 11, characterized in that - the forming surface is formed by an inner or outer cone (8, 10) which is stamped axially and / or radially onto the intersection surface (3, 4) of the segment (1, 2).

13. Method according to any one of claims 9 to 12, characterized in that - the manipulation unit comprises an abrasive forming unit.

14. Method according to any one of claims 9 to 13, characterized in that - the manipulation unit comprises a laser processing unit (30).

15. Method according to any one of claims 9 to 14, characterized in that - the manipulation unit comprises a moistening unit by means of which the cutting edge of the cutting blade is moistened before the cutting operation and / or the segment (1, 2) is moistened at a cut surface (3, 4) after the cutting operation.