WO2020169583A1

WO2020169583A1 - Device for cutting a packaging material web

Info

Publication number: WO2020169583A1
Application number: PCT/EP2020/054207
Authority: WO
Inventors: Bastian Schalk; Mark Kollmer
Original assignee: Sprick Gmbh Bielefelder Papier- Und Wellpappenwerke & Co.
Priority date: 2019-02-18
Filing date: 2020-02-18
Publication date: 2020-08-27
Also published as: DE102019104029A1; EP3927507A1

Abstract

The invention relates to a device for cutting a packaging material web, such as a corrugated board web, said device comprising a freely rotatably mounted cutting wheel that can be translationally moved in the cutting direction by a drive to cut the packaging material web, and a cutting strip against which the cutting wheel is pretensioned in the axial bearing direction.

Description

Device for cutting a packaging material web

The invention relates to a device for cutting a packaging material web, such as a corrugated cardboard web, in particular made of recycled paper.

Devices for cutting packaging material (cutting devices) are set up, for example, in logistics centers as a portable, mobile unit in order to provide length-made packaging material webs when packing an object. On the one hand, there is the need to provide a cutting device that is as light as possible, so that the demands on work stations on which the cutting device is positioned decrease. Furthermore, a cutting device that is as light as possible is required in particular to make it as mobile as possible for use at different stations. Furthermore, it is desirable that a cutting arrangement with a cutting device and a material web supply take up as little floor space as possible, in particular in logistics centers. In addition, it is desirable that the cutting device can be used for different types of material web, in particular with different material web thicknesses, and that the necessary conversion measures for switching between the types of material are as small as possible and can be carried out as error-free as possible even by unskilled personnel. Furthermore, it is desirable that the cutting process produces as few packaging residues as possible, such as dust and snippets, which on the one hand can lead to blockages of the cutting device and on the other hand represent a health hazard for a person operating the cutting device. Furthermore, it is desirable that blockages in the cutting devices can be cleared as quickly as possible and also by unskilled personnel.

A cutting device for cutting corrugated cardboard is known from US 1093438B2. In it, corrugated cardboard webs in the form of fan-fold stacks are positioned upstream of a cutting device and conveyed through the cutting device via a conveyor device. At the downstream end of the cutting devices, a cutter is provided for severing the web of corrugated cardboard. Furthermore, the cutting device comprises scribing elements for introducing fold edges in the longitudinal direction of the material web. However, there is a need to reduce the weight of the known cutting device in order to be able to assemble a packaging material web in a smaller space and on workstations with a lower load capacity. Furthermore, it has been found to be disadvantageous that the known cutting device cannot easily be used for different material web thicknesses. Rather, the cutting device is designed only for one material web thickness and must be converted by skilled personnel for the processing of different material web thicknesses. Furthermore, the quality of the cut edges that can be achieved with the known cutting device has turned out to be unsatisfactory. On the one hand, the material web is partially crushed and torn when it is cut, which leads to an uneven cutting edge. On the other hand, it has been found that during the cutting process, packaging residues such as dust and snippets occur to a large extent, which on the one hand is a health hazard for a person working on the cutting device and on the other hand favors the occurrence of material dust. Furthermore, jam clearance in the known cutting device has proven to be time-consuming and complicated.

The object of the invention is to provide a device for cutting packaging web material which overcomes the disadvantages of known cutting devices, in particular to provide a device for cutting packaging web material with which the cut quality, the adaptability to different material web thicknesses, the jam removal, the cut residue avoidance and / or the user-friendliness is improved compared to the prior art, the weight and / or the space requirement of the device preferably remaining at least constant, particularly preferably being reduced in size.

The object is achieved by the subject matter of the independent claims.

The invention relates to a device for cutting a packaging material web, such as a corrugated cardboard web. Cutting is to be understood in particular as the severing of a packaging material web and / or the tearing of a packaging material web. The severing of the packaging material web serves in particular the purpose of providing packaging material products of a specific, in particular predetermined, length from an endless packaging material web. The tearing of the packaging material web serves in particular to equip the packaging material web with folding edges, so that these can be folded around an object to be packaged in a simplified manner. An endless web of packaging material can be provided, for example, in the form of a fan-fold stack or a roll of material web. To reduce the space required for cutting packaging material webs, an arrangement of the devices and a material web roll has proven to be advantageous. The roll of material web can be positioned, for example, below a work station on which the device stands. Alternatively, the roll of material web can be positioned, in particular suspended, above the device. Alternatively, the roll of material web can also be positioned in the conveying direction upstream or downstream of the device. Compared to the use of fan-fold stacks, the use of a roll of material web has the particular advantage that the packaging material web can be deflected in a smaller space and the space required for the entire arrangement can be reduced. While packaging material web rolls can be deflected in a smaller space due to the continuous curvature of the packaging material web around the roll axis and have an essentially continuous guide path from the material web roll to the insertion opening of the device, the folding edges in fan-fold stacks lead to the individual stacking layers being pulled off in an accordion-like manner, whereby a larger one and a fluctuating guide path between the stack and the insertion opening is required. The continuous guide path resulting from the arrangement of a device according to the invention with a roll of material web can in particular simplify the feeding of the packaging material web into the device, so that in particular the requirements for aligning devices, such as feed rollers, can be reduced and the aligning devices smaller and / or can be easily designed.

In principle, the device according to the invention could be used for cutting packaging webs of the most varied types of material, such as paper, plastic and metal. However, the measures according to the invention particularly meet the requirements for cutting paper, in particular recycled paper, as the material and corrugated cardboard as the form of the packaging web. The present invention is therefore particularly preferably a corrugated cardboard web cutting device, in particular for cutting a corrugated cardboard web made of recycled paper. Particular challenges that the device according to the invention encounters are, on the one hand, the increased generation of packaging residues, such as dust and snippets or cutting shreds, when cutting recycled paper and, on the other hand, fluctuations in the material web thickness that corrugated cardboard webs can have in their longitudinal direction, especially in the conveying direction. The measures described below can, in particular, reduce the weight and dimensions of the device. The device according to the invention therefore relates in particular to a device with a weight of less than 60 kg and / or a dimension in the cutting direction of less than 200%, 180%, 160% or 140% of the extension of the packaging material web to be cut in the cutting direction. The packaging material webs to be cut have in the cutting direction in particular an extension of at least 0.5 m, 0.75 m, 1 m, 1.25 m, 1.5 m and / or of at most 1.5 m, 1.75 m, 2 , 0 m, 2.25 m, 2.5 m, 2.75 m or 3.0 m.

Corrugated cardboard is to be understood in particular as corrugated cardboard as defined in DIN 55 468 Part 1, according to which corrugated cardboard is cardboard that consists of one or more layers of corrugated paper that is glued between several layers of other paper or cardboard. A distinction can be made here between types of corrugated cardboard, in particular in terms of the number of webs selected, such as single-sided corrugated cardboard, single-walled corrugated cardboard, double-walled corrugated cardboard and three-walled corrugated cardboard. The types of corrugated cardboard can be differentiated in particular according to their size. The corrugation pitch is the horizontal dimension, in particular the dimension in the direction of the thickness of the material web, between the vertices of two corrugations. The wave height is the vertical dimension, especially in the conveying direction between two vertices. For reasons of sustainability, paper layers and / or cardboard boxes are preferably made from recycled paper. In particular, the special shape of the corrugated cardboard achieves a high degree of rigidity with relatively little material input compared to solid cardboard. In particular, the impact resistance and cushioning effect can be improved with corrugated cardboard compared to simple paper or cardboard sheets. The construction of corrugated cardboard is particularly comparable to carrier profiles, such as T-beams and trusses.

For reasons of sustainability, fiber material such as paper, particularly preferably recycled paper or recycled cardboard, is preferably used as the material of the packaging material web. Recycled cardboard is to be understood in particular as cardboard made from recycled paper. Recycled paper is in particular paper materials with a low proportion (less than 50%) of paper material containing fresh fibers. In particular, paper materials which contain 70% to 100% waste paper are preferred. The recycled paper in the context of this invention should be paper material that can have a tensile strength index along the direction of conveyance of at most 90 Nm / g, preferably a tensile strength of 15 Nm / g to 60 Nm / g and a tensile strength index transverse to the machine direction of at most 60 Nm / g may have, preferably a tensile strength of 5 Nm / g to 40 Nm / g. A standard DIN EN ISO 1924-2 or DIN EN ISO 1924-3 can be used to determine the tensile strength or the tensile strength index. Additionally or alternatively, a recycled paper property or waste paper property can be characterized by the so-called burst resistance. A material in this sense is recycled paper with a bursting index of 3.0 or less kPa * m ^A 2 / g, preferably with a bursting index of 0.8 kPa * m ^A 2 / g to 2.5 kPa * m ^A 2 / g. The standard DIN EN ISO 2758 is used to determine the bursting index. Furthermore, the material has a mass per unit area of in particular 40 g / m ^A 2 to max. 140 g / m ^A 2.

In the context of the present invention, the cutting direction is to be understood in particular as the direction in which the cutting edge of the cut packaging material web extends. In the case of a cutting wheel that can be moved in translation, the cutting direction corresponds to the direction in which the cutting wheel is guided in translation. In the case of a guillotine-like or scissors-like cut, on the other hand, the cutting direction can, for example, run orthogonally to the direction of movement of the cutting edge. For example, a guillotine-like cutting edge can be guided in a translatory manner in the direction of the thickness of the material web, while the resulting cutting edge can extend orthogonally to the direction of movement of the cutting edge and to the conveying direction. The material web thickness direction is to be understood in particular as the direction in which the material web thickness extends in the device. The material web thickness direction preferably corresponds to the gravitational direction. The conveying direction is to be understood in particular as the direction in which the packaging material web is conveyed in the device, in particular in the device towards the cutting edge. For this purpose, a conveyor device, such as at least one conveyor roller pair, preferably at least two, three, four, five or six conveyor roller pairs spaced from one another in the cutting direction, can be provided. The conveying device is preferably part of the device, in particular firmly connected to it. Particularly preferably, the conveyor device has at least one pair of conveyor rollers with two conveyor rollers braced against one another, in particular in the direction of the material web thickness.

According to a first aspect of the present invention, the device comprises a freely rotatably mounted cutting wheel, which is translationally movable in the cutting direction by a drive to cut the packaging material web, and a cutting bar against which the cutting wheel is pretensioned in the axial direction. The freely rotatable mounting is to be understood in particular as meaning that the rotary wheel is free from a direct drive, such as an electric motor. The rotatable mounting is preferably implemented around an axis of rotation extending in the conveying direction. In this way, in particular, the weight of the device can be saved. The rotation of the cutting wheel about the axis of rotation is instead brought about in particular by the translational movement of the cutting edge. In particular, the rotation is brought about by frictional forces acting between the cutting wheel and the cutting bar, which result in particular from the pretension between the cutting wheel and the cutting bar. The frictional force is particularly effective Cutting contact between the cutting edge and the cutting bar and is preferably oriented essentially in the direction opposite to the cutting direction. Due to an offset between the cutting contact and the axis of rotation of the freely rotatable cutting wheel, the frictional force in particular exerts a torque on the cutting wheel that sets the cutting wheel in rotation about the axis of rotation. The rotary wheel turns in particular in the direction opposite to the cutting direction.

Surprisingly, it has been found that the combination of pre-tensioning with respect to the cutting bar and freely rotatable mounting leads to an improved cut quality, in particular to fewer packaging residues when cutting.

The cutting wheel is preferably axially preloaded against the cutting bar via its cutting wheel surface. The cutting wheel surface extends preferably in the form of a disk in a plane which has the axis of rotation of the cutting wheel as a normal vector. The axial preload with the cutting wheel surface, in particular in comparison to a radial preload with the cutting surface, made it possible to increase the service life of the cutting edge. In particular, the cutting wheel surface merges into a cutting surface in the radial direction. In particular, the cutting wheel is supported laterally against the cutting bar in order to build up the prestress in the axial bearing direction.

According to a further development of the invention, the cutting bar protrudes in the axial direction into a cutting path along which the cutting wheel moves to cut the packaging material web. In particular, a contact side of the cutting bar facing the cutting wheel protrudes into the cutting path. Particularly preferably, a contact edge of the cutting bar facing the cutting edge protrudes into the cutting path. The cutting path is to be understood in particular as the space that the cutting edge traverses when moving from a cutting start position to a cutting end position. The cutting wheel is pretensioned in particular by the cutting bar protruding into the cutting path when moving along the cutting path with respect to the cutting bar.

According to a further development of the invention, the preload between the cutting wheel and the cutting bar is created by elastic deformation of the cutting wheel and / or the cutting bar. Preferably, a prestressing force acting as a result of the prestress between the cutting wheel and the cutting bar acts on a cutting contact between the cutting wheel and the cutting bar that is radially spaced from the axis of rotation of the cutting wheel. In particular, the preload force acts in the axial bearing direction. The cutting edge is preferably made of a softer and / or more elastic material than the cutting bar, so that the cutting edge bends elastically. The cutting stick is preferably hardened, in particular hardened in such a way that that it has a greater hardness than the cutting edge. It has been found that by preloading the cutting wheel in the axial bearing direction, in particular the elastic deformability of the cutting wheel can be used significantly better, since the preloading force can be set over a larger lever range, in particular between force engagement and the axis of rotation of the cutting wheel.

The axis of rotation of the rotatably mounted cutting wheel preferably extends in the conveying direction.

According to a further development of the invention, the axis of rotation of the rotatably mounted cutting wheel is offset in the direction of the thickness of the material web relative to the cutting contact between the cutting wheel and the cutting bar. The axis of rotation preferably extends below the cutting contact in the direction of the material web thickness. Alternatively or in addition, a vector extending from the axis of rotation radially to the cutting contact, in particular in cutting engagement with the packaging material web, is 20 ° to 80 °, 50 ° to 70 ° or 55 ° to 65 ° in relation to a plane extending in the axial direction and in the cutting direction ° inclined. This inclination can in particular also be referred to as a vector angle. The vector extends in particular from the axis of rotation to the end, in particular the end point, of the cutting contact in the cutting direction. It has been found that such a vector angle brings about, in particular, an improved cutting quality, in particular in the case of corrugated cardboard webs. Alternatively or additionally, the vector angle can be formed between the vector and the extension of the packaging material web surface extending in the conveying direction and in the cutting direction. The vector angle can in particular be set by changing the offset between the axis of rotation of the freely rotatable cutting wheel and the cutting contact. As the offset becomes smaller, the vector angle also becomes smaller. If there is no offset between the axis of rotation and the cutting contact in the direction of the web thickness, the vector angle is o °.

According to a further development of the invention, in order to set a prestressing force acting through the prestress between the cutting bar and the cutting wheel, the position of the cutting bar relative to the cutting wheel, in particular in the conveying direction, is via a fine adjustment mechanism, such as a slot connection, and / or via a coarse adjustment mechanism, such as a locking connection with several Steps, adjustable. As an alternative or in addition, the coarse adjustment mechanism can be implemented, for example, via several bores, for example for screw connections.

According to a further development of the invention, the cutting wheel is driven by a direct current motor. Alternatively or additionally, the device can be a conveyor for Include conveying the packaging material web, which is driven by a DC motor. In particular, the use of direct current motors can reduce the space required for cutting packaging material webs, since direct current motors can be controlled via smaller control electronics, so that in particular the need for a control cabinet can be eliminated.

According to a second aspect of the present invention, the device comprises a cutting wheel which is translationally movable by a drive in the cutting direction in order to cut the packaging material web, and a cutting bar which forms a cutting contact with the cutting wheel and comprises a contact side facing the cutting wheel, which in is inclined at a clearance angle of at least one degree to the cutting wheel surface facing the cutting bar. To determine the clearance angle, the cutting wheel surface facing the cutting bar is to be understood in particular as an idealized plane that has a vector extending in the conveying direction and / or in the axial bearing direction as a normal vector. Starting from the cutting wheel surface, the contact side is inclined away from the cutting wheel surface in particular about an axis extending in the cutting direction. In particular, the cutting wheel surface extends from the cutting contact in the opposite direction to the direction of the material thickness. The clearance angle can in particular ensure that a linear cutting contact is formed between the cutting wheel and the cutting bar. The clearance angle is preferably o, i ° to 45 ^0, in particular i ° to 15 ^0, preferably ⁰ to 2 io °, particularly preferably 3 ⁰ to 8 °.

In a further development of the invention, the cutting contact is designed as a linear contact between the contact side and the cutting wheel surface. The cutting contact is preferably formed at points in cutting engagement with the packaging material web. Alternatively or additionally, the contact side and / or the cutting wheel surface extends in a flat plane. A flat plane is to be understood in particular to mean that the cutting surface runs in a straight line in cross section. This can in particular ensure that a linear contact is formed between the cutting edge and the cutting bar. The cut engagement is to be understood in particular as the cut area between the cutting contact and the packaging material web. The cutting wheel surface facing the cutting bar is also preferably designed as a flat plane, which in particular has a vector extending in the conveying direction and / or in the axial storage direction as a normal vector. The linear contact between the cutting edge and the cutting bar can, in particular, reduce wear on the cutting edge and cutting bar. Furthermore, the friction that occurs in the cutting contact can be reduced by the linear contact. As a result, in particular a drive, such as an electric motor, of the cutting wheel can be made smaller and / or lighter. Furthermore, the service life of the cutting edge and of the Cutting stick. In particular, the service life can be increased in that the cutting stick is hardened in cutting contact. The linear contact between the cutting bar and the cutting wheel surface is particularly advantageous. As a result, the cutting surface in particular only makes selective contact with the cutting bar, namely at the ends of the cutting contact.

According to a further development of the invention, the cutting bar is hardened. The cutting bar is preferably hardened in such a way that the cutting bar is harder than the cutting wheel. Alternatively or in addition, the cutting wheel is ground. In order to compare degrees of hardness, it is possible to use in particular the indication of the hardness in Vickers hardness and a corresponding method for determining the Vickers hardness.

One advantage that results in particular from a hardened cutting stick is that it can in particular reduce the deformation of the cutting stick due to the back and forth movement of the cutting wheel. In particular, this also represents a cost advantage, since replacing a cutting edge is significantly less expensive than replacing a cutting stick.

The cut surface of the cutting wheel is preferably ground. The cut surface is preferably ground smooth. It has been found that cutting noises can be reduced with a smooth grinding surface. In a less advantageous embodiment, however, the cutting edge can also have a serrated edge. Alternatively, in particular, polygonal knives can also be used. The cut surface can in particular form a straight or curved, in particular concave, convex or semi-ellipse-shaped, conical envelope section. The conical surface section preferably tapers in the conveying direction. The cut surface is preferably ground at a grinding angle of 20 ° to 50 °, in particular 30 ° to 40 °. The grinding angle can in particular be determined by the angle between the extension of the cut surface, in particular the conical surface section in the opposite direction to the conveying direction, and the extension of the cutting wheel surface facing the cutting bar. Another advantage of a ground cutting edge lies in the fact that the corrugated cardboard material can be prevented from expanding when it is cut through. In particular, this can increase the quality of the cut. In addition, due to the ground cutting edge, in particular the formation of packaging material residues, such as snippets, in particular cutting scraps, and dust, when cutting the packaging material web can be reduced. In particular, the use of ground cutting edges can also reduce the occurrence of bruises, pressure points and / or cracks on the cutting edge. In a further development of the invention, the cutting bar has at least one inlet side facing the cutting wheel, which is inclined for gradual biasing of the cutting wheel by an inlet angle of at least 1 °, in particular 1 ° to 10 ° or ³⁰ to 8 °, to the cutting wheel surface facing the cutting bar . Preferably, starting from a plane extending in the material web thickness direction and in the cutting direction, the inlet angle is inclined about an axis extending in the material web thickness direction. As an alternative or in addition, the inlet side in particular extends in the cutting direction preferably over a distance of 2 mm to 30 mm, 4 mm to 20 mm or 6 mm to 10 mm. The inlet side preferably extends in a flat plane. Gradual pre-tensioning is to be understood in particular as the fact that a pre-tensioning force forming the pre-tensioning increases continuously. The inlet side preferably merges into the contact side prior to the cutting engagement of the blade with the packaging material web. Particularly preferably, two inlet sides are provided which merge from the longitudinal ends of the cutting bar into the contact side. As a result, the prestress can be built up gradually before the first cutting engagement of the blade with the packaging material web and the prestress can be gradually reduced after the last cutting engagement. In a less preferred embodiment, the at least one contact side can also transition into the contact edge only after the first cutting engagement and / or can connect to the contact side even before the last cutting engagement. The inlet side, starting from the cutting wheel surface, is preferably inclined away from the cutting wheel surface by the inlet angle about an axis extending in the direction of the material thickness.

By designing the inlet angle in the specified range, in particular the pretensioning between the cutting wheel and the cutting bar can be built up and reduced without the cutting edge and / or the cutting bar being excessively worn. If the inlet angle is too large, the cutting edge can hit the cutting bar when the preload is built up and / or when the cutting contact is made, in particular with the cutting surface, which can result in increased wear on the cutting edge and the cutting bar.

According to a further development of the invention, the cutting bar has a protective bevel upstream of the cutting contact in the conveying direction for braking the packaging material web, in particular to prevent the cutting wheel from being pushed away from the cutting bar. The protective bevel is preferably inclined, starting from a plane extending in the conveying direction and in the cutting direction, by a protective angle, in particular from 10 ° to 60 ° or 20 ° to 30 °, about an axis extending in the cutting direction. In particular, starting from the cutting contact, the protective bevel is inclined away from the material web in the direction of the material web thickness. Through the protective bevel In particular, it is avoided that a web of packaging material conveyed to the cutting wheel in the conveying direction releases the cutting contact between the cutting wheel and the cutting bar and is conveyed into the resulting gap without being cut, or only partially cut, by the cutting wheel. The protective bevel preferably extends, starting from the contact side, in particular from the contact edge, in the direction opposite to the conveying direction and in the direction opposite to the material web thickness direction, in particular the direction of gravity. Starting from a plane extending in the cutting direction and conveying direction, the protective phase is inclined away from the material web by the protective angle about an axis extending in the cutting direction. The protective bevel preferably merges into a cutting strip guide surface that extends in particular parallel to the packaging material web. The cutting strip guide surface can in particular serve as a guide surface for the packaging material web. Particularly preferably, a connecting section extending in the direction of the material web thickness extends between the cutting strip guide surface and the protective bevel. A cutting bar limiting section is preferably provided on at least one, preferably on both, longitudinal ends of the cutting bar. The cutting bar delimiting section extends in particular from the contact side, preferably from the contact edge, in the direction opposite to the conveying direction and in particular parallel to a plane extending in the conveying direction and in the cutting direction. The cutting bar delimiting section is designed in particular in such a way that it prevents the packaging material web from pivoting out at the height of the conveying direction of the cutting bar in the cutting direction. In this way it can be ensured in particular that the cutting engagement takes place at the position provided for it. In particular, the protective bevel forms a resistance which prevents the packaging material web from interrupting the cutting contact between the cutting bar and the cutting edge and, in particular, from entering the resulting gap.

It has been found that an exact arrangement of the cutting stick to the cutting edge, in particular taking into account individual and / or several of the angles described above on the cutting stick and between the cutting stick and the cutting edge, leads to significantly improved cutting results, quieter cutting and a reduction in the amount of cutting that occurs during cutting Packaging material residues.

In less preferred embodiments, in particular the first two aspects of the present invention, the cutting edge can be designed as an alternative to the preferred embodiment of a translationally movable cutting wheel, in particular a freely rotatably mounted cutting wheel, for example also as a guillotine-like moving cutting edge or as a scissor-like moving cutting edge. According to a third aspect of the present invention, the device comprises a cutting edge which travels along a cutting path for cutting the packaging material web, and a cutting bar which forms a cutting contact with the cutting edge and which is movably mounted for executing a movement relative to the cutting path, so that the cutting bar has a variation of the Material web thickness in the conveying direction follows. In particular when cutting corrugated cardboard, the material web thickness can also vary within a corrugated cardboard web due to unevenness in the corrugated cardboard web. Variation of the material web thickness is to be understood in particular as the change from one packaging material web thickness to another. For example, changing from a single-layer packaging material web to a two-layer packaging material web can lead to a variation in the material web thickness.

As described in particular above, the setting of the position and / or a pretensioning force between the cutting edge and the cutting bar influences the quality of the cut, the formation of packaging material residues, the volume of the cutting process and the service life of the cutting edge and the cutting bar. With the third aspect of the invention, an advantageous positioning of the cutting bar in relation to the cutting edge can be maintained, particularly when the material web thickness varies. In particular, the adaptation to the variation in the material web thickness should take place as automatically as possible or be easy to implement, in particular to be implemented by untrained personnel. Variation of the material web thickness in the conveying direction is to be understood in particular as meaning that the material web thickness varies over its extent in the conveying direction. The cutting bar should in particular be mounted in such a way that it follows such a variation in the material web thickness. Because the cutting bar follows the variation in the material web thickness in the conveying direction, a simplified, preferably automatic, adjustment of the extension of the output opening in the material web thickness direction to the conveying direction height of the cutting bar can also be implemented.

According to a further development of the invention, the cutting bar is mounted in such a way that an increase in the material web thickness causes a relative movement of the cutting bar, in particular in the conveying direction, towards the cutting path. Alternatively or additionally, the cutting bar is mounted in such a way that a reduction in the material web thickness causes a relative movement, in particular in the conveying direction, away from the cutting path. In particular, the movement of the cutting bar towards the conveying path has the effect that the cutting contact remains as the material web thickness increases despite the possible lifting of the cutting bar. Moving away from the cutting wheel when the material web thickness is reduced has the effect, in particular, that one between the cutting bar and The tension acting on the cutting wheel is not too great as a result of a possible reduction in the cutting bar due to the reduced material web thickness.

According to a further development of the invention, the cutting edge is pretensioned against the cutting bar in the conveying direction of the packaging material web, an increase in the thickness of the material web causing an increase in the tensioning force acting through the bias between the cutting edge and the cutting bar. Surprisingly, it has been found that such a configuration can maintain, in particular improve, the cutting quality with increasing material web thickness, in particular with unevenness within a packaging material web and / or when changing to a packaging material web with a different material web thickness. The service life of the cutting stick and the cutting edge could surprisingly be increased as a result. It has also been found that this can reduce the creation of packaging material residues.

According to a further development of the invention, the cutting bar is attached to a housing wall, in particular on a guide plate, particularly preferably on the upper guide plate. The housing wall is movably mounted in such a way that the housing wall follows a variation in the material web thickness in the conveying direction. The housing wall preferably has at least one conveyor roller which is in engagement with the packaging material web and is moved as a result of a fluctuation in the thickness of the material web, in particular the housing wall is moved in the conveying direction. Alternatively or additionally, the housing wall is spring-mounted, in particular in the direction of the material web thickness. In particular, the housing wall is movably mounted in such a way that the movement of the conveyor rollers in or against the direction of the thickness of the material web causes the housing wall to move in the conveying direction. In particular, by fastening the cutting bar to the housing wall, the cutting bar is also moved in the conveying direction. As a result of the preferred arrangement of the cutting edge in the conveying direction downstream of the cutting bar, the cutting bar is thereby moved towards the cutting edge. As a result, the bias between the cutting edge and the cutting bar can be increased as the material web thickness increases.

Due to the spring mounting of the housing wall, fluctuations in the material web thickness in particular can be at least partially cushioned, so that, in contrast to a rigid housing wall, pinches and pressure points in the packaging material web can be largely avoided. The suspension can, for example, between a cover housing wall and a housing wall in the form of an upper guide plate will be realized. For this purpose, one or more springs can be provided between an upper guide plate and the cover housing wall.

According to a further development of the invention, the cutting bar is mounted on a pivot axis which extends parallel to the cutting path and / or at the height of the conveying direction of an insertion opening of the device, via which the packaging material web is fed to the device. This makes use of the fact that a pivoting movement of an element causes a movement in at least two directions. The pivotable mounting of the cutting bar about a swivel axis extending in the cutting direction means that a movement of the cutting bar in the direction of the material web thickness also causes a movement in the conveying direction. By coupling the cutting bar with the material web it can be achieved in particular that a fluctuation in the material web thickness leads to a movement of the cutting bar in or in the direction opposite to the conveying direction. It has therefore been found to be particularly advantageous to attach the cutting bar to the housing wall, to which in turn at least one conveyor roller is attached, which transfers the fluctuation of the material web thickness to the housing wall and via the housing wall to the cutting bar. Alternatively, the cutting bar could also be coupled directly to the conveyor rollers. As a further alternative, it is conceivable that the cutting bar itself is in engagement with the packaging material web in such a way that it directly follows fluctuations in the material web thickness. It has been found to be particularly preferred to attach the cutting bar to a guide plate, in particular to the upper guide plate. Furthermore, it is preferred that at least one conveyor roller which is in engagement with the packaging material web is in turn fastened to the guide plate itself. Alternatively, however, only the guide plate could be in engagement with the material web and thereby absorb a fluctuation in the material web thickness and transmit it to the cutting bar.

According to a further development of the invention, the cutting bar is mounted via a pivot axis which extends in the direction of the material web thickness above the cutting contact. The cutting contact preferably extends as a linear contact in the cutting direction between a contact side of the cutting bar facing the cutting edge and a cutting wheel surface facing the cutting bar. The pivot axis particularly preferably extends by more than 0 millimeters and less than 50 millimeters, particularly preferably by more than 10 millimeters and less than 23 millimeters, above the cutting contact. The term “above” is to be understood in the broader sense as the direction opposite to the material web thickness direction and / or the direction orthogonally to the cutting direction and to the conveying direction away from the cutting contact. In the narrow sense “Above” is to be understood in particular as the direction opposite to the direction of gravity. The extension of the pivot axis above the cutting contact ensures in particular that the cutting stick is moved away from the packaging material web as a result of a pivoting movement of the cutting stick, in particular in the direction opposite to the direction of gravity, in the conveying direction, in particular towards the cutting edge. The extension of the pivot axis at the conveying direction height of the insertion opening ensures in particular that the pivoting radius extends in the conveying direction from the insertion opening to the cutting bar, in particular to the cutting contact. This can in particular ensure that the movement amplitude of the cutting bar, in particular as a result of a pivoting movement away from the material web, on the cutting path is too large to achieve a sufficient increase in the pretension due to an increased material web thickness.

The pivot axis preferably corresponds to the axis of rotation of an insertion roller, in particular the upper insertion roller of two insertion rollers which form the insertion opening of the device.

According to the fourth aspect of the present invention, the device comprises an insertion opening through which the packaging material web is fed to the device, a cutting edge cooperating with a cutting bar for cutting the packaging material web, and a guide channel extending in the conveying direction between the insertion opening and the cutting edge, which is guided by a is limited lower and an upper guide plate, wherein one of the guide plates, preferably the upper guide plate, is pivotably mounted relative to the other guide plate.

In particular, a gap extending in the cutting direction and in the material web thickness direction is provided as the insertion opening. The gap is preferably delimited in the direction of the material web thickness by at least one, preferably two, infeed rollers, which in particular extend essentially over the entire infeed opening in the cutting direction. The feed rollers are preferably mounted so that they can rotate freely. By using infeed rollers, in particular the web of packaging material can be fed in from above, below and / or behind the device. In particular when unwinding the packaging material web from a material web roll, the packaging material web can be introduced into the insertion opening in a targeted manner via the infeed rollers and over a constant insertion path. - l6 -

The co-operation of the cutting edge with the cutting bar can mean a cutting contact, in particular a linear contact, between the cutting edge and cutting bar. Furthermore, cooperation can in particular mean a pretension between the cutting edge and the cutting bar. A cutting wheel, in particular a freely rotatable cutting wheel, is preferably used as the cutting edge. In a less preferred embodiment, however, a cutting wheel can also be provided that is rotationally driven by a drive. Alternatively, other cutting edges, such as cutting edges moving in the manner of a guillotine and cutting edges moving in the manner of scissors, can also be used.

The guide channel preferably delimits an in particular angular space which is delimited by the guide plates in and in the direction opposite to the direction of the material web thickness. In and in the direction opposite to the conveying direction, the guide channel is preferably delimited by gaps extending in the cutting direction and in the direction of the material web thickness. The extension of the guide channel in

Material web thickness direction preferably adapts to a variation of the

Material web thickness. For this purpose, one of the guide plates, in particular the upper guide plate, is preferably connected to at least one conveyor roller which is in engagement with the material web. The conveyor roller preferably follows fluctuations in the web thickness.

The consequence of fluctuations in the material web thickness is to be understood in particular as meaning that an increase in the material web thickness leads to a movement in the direction opposite to the material web thickness direction and a reduction in the material web thickness leads to a movement in the material web thickness direction. In the event that the direction of the material web thickness corresponds at least essentially to the direction of gravity, “following the fluctuation of the material web thickness” can in particular mean that an increase in the material web thickness causes an increase in the relevant component and that a reduction in the material web thickness causes a decrease in the relevant component.

As a result of the preferred fastening of the guide plate, in particular the upper guide plate, to the at least one conveyor roller, in particular the movement of the conveyor roller is transmitted to the guide plate. As a result, the guide plate in particular also follows the fluctuation in the material web thickness. The guide channel preferably increases or decreases in size in the direction of the material web thickness with the material web thickness. Particularly preferably, one, preferably the upper guide plate, is spring-mounted opposite a housing wall, preferably a cover-housing wall. For this purpose, a spring is provided in particular between the cover housing wall and the guide plate. In a less preferred embodiment, however, the guide plate can also be firmly connected to the housing wall, in particular free of a spring mounting. It has been found to be preferable to select the upper guide plate as the movably mounted guide plate. Particularly preferably, the cutting bar is also firmly attached to the guide plate, preferably to the upper guide plate. This can ensure that the cutting bar also follows the displacement of the guide plate in the conveying direction and / or in the direction of the material web thickness.

A guide plate is to be understood in particular as a guide structure which extends in the conveying direction essentially over the entire area between the insertion opening and the cutting bar and / or cutting edge. Preferably, the cutting bar is attached to the downstream end of the guide plate in the conveying direction, in particular to the upper end of the guide plate. In a less preferred embodiment, a distance between the cutting bar and the guide plate of 1 mm to 100 mm, 1 mm to 80 mm, 1 mm to 60 mm, 1 mm to 40 mm, 1 mm to 20 mm, 1 mm can also be used in the conveying direction up to 10 mm or 1 mm to 5 mm can be provided. Alternatively or additionally, the guide plate is pivotably mounted in the conveying direction at the upstream end of the guide plate. The upper guide plate is particularly preferably coupled to the axis of rotation of an infeed roller, in particular the upper infeed rollers. This has the particular advantage that the axis of rotation of the infeed roller can be used as the pivot axis of the upper guide plate. At the same time, in particular, the pivoting radius of the upstream end of the guide plate, in particular of a cutting bar fastened to the guide plate, can thereby be increased.

The guide plate extends in particular on the side facing the guide channel in a flat, in particular not curved, plane, in particular in the conveying direction and in the cutting direction. The sides of the two guide plates facing the guide channel preferably extend parallel to one another and in particular form a substantially rectangular guide channel. In particular, the guide plates extend on both sides in flat planes.

If a flat plane or surface is spoken of before or after, this is to be understood in particular as meaning that the surface is not curved, but rather can be described by two straight vectors. - l8 -

It has been found that the pivotable mounting of one of the guide plates enables an essentially automatic adaptation of the guide channel to varying material web thicknesses.

Due to the pivotable mounting of one of the guide plates, in addition to adapting the position of the guide plate to a variation in the material web thickness, the pivotable guide plate can also be opened for cleaning purposes so that the guide channel is accessible and in particular cleaned or freed from packaging residues or from the packaging material web jammed within the guide channel can.

The use of guide plates can in particular ensure that the packaging material web is essentially aligned in a flat plane in the guide channel. In this way, in particular, uniform feeding of the packaging material web onto the cutting edge and the cutting bar can be guaranteed.

According to a further development of the invention, the pivotable guide plate is pivotably mounted in such a way that it follows a variation in the material web thickness in the conveying direction, the pivotable guide plate preferably having at least one conveyor roller which is in engagement with the packaging material web and is moved in the material web thickness direction due to a fluctuation in the material web thickness , wherein the at least one conveyor roller is preferably connected to the guide plate in a force-transmitting manner, in particular fastened to the guide plate in a rotatable manner. The at least one conveyor roller is particularly preferably elastic. The elasticity of the at least one conveyor roller can in particular produce a spring damping effect which dampens small fluctuations in the material web thickness in particular. For this purpose, the conveyor roller can in particular be made of plastic, such as polyurethane, or at least have a plastic layer around the circumference. Alternatively or in addition, the elasticity of the conveyor roller can also be realized by the geometric configuration of the same, for example by bulges in the conveyor roller. As an alternative or in addition to the elastic configuration of a conveyor roller, the spring-damping effect can also take place via a springing of the guide plate with respect to a housing wall, such as a cover housing wall. The upper guide plate is preferably movable relative to a housing wall, such as a cover housing wall or a base housing wall.

According to a further development of the invention, the sides of the guide plates facing the packaging material web run essentially parallel to one another and are in FIG Material web thickness direction preferably spaced apart by a distance of more than one mm and less than 100 mm, particularly preferably of more than 2 mm and less than 8 mm. In particular, due to the pivotable mounting of the upper guide plate, the distance is adapted to a variation in the material web thickness. In particular, the distance is automatically adapted by varying the material web thickness, in that the packaging material web drives the upper guide plate in the direction opposite to the material web thickness direction.

According to a further development of the invention, the pivotable guide plate is mounted on a pivot axis. The pivot axis extends in particular to the height of the conveying direction of the insertion opening. Alternatively or additionally, the cutting bar is fastened in the conveying direction to the upstream end of the pivotable guide plate. According to the third aspect of the invention, the movable mounting of the cutting bar is preferably implemented by fastening the cutting bar to the pivotably mounted guide plate, in particular to the pivotably mounted upper guide plate.

According to a further development of the invention, at least one, preferably 2 to 8, particularly preferably 4 to 6, passage opening is formed in one, preferably in both guide plates, with at least one, preferably 2 to 8, particularly preferably 4 to 6, conveyor roller extends into the guide channel, wherein the at least one conveyor tube is preferably mounted outside the guide channel, in particular freely rotatable. The at least one passage opening extends in particular in the direction of the material web thickness completely through the guide plate. The dimensions of the passage opening are adapted in particular to the axial and radial extension of conveyor rollers, which can be attached to the guide plate so as to project the packaging material web into the guide channel. Preferably, the passage openings are angular, in particular parallelogram-like or rectangular-like. The conveyor roller can in particular be stored outside the guide channel through the passage opening. As a result, in particular only a section of the conveyor roller can protrude into the guide channel. This ensures in particular that the guide channel is designed to be narrow in the direction of the material web thickness and, in particular, can be adapted to the material web thickness of the packaging material web to be conveyed. As a result, the material web can be aligned in a flat plane, in particular within the guide channel, so that the material web is conveyed in particular evenly towards the cutting edge and the cutting bar. By mounting the at least one conveyor tube outside the guide channel, it can also be ensured that the radial infeed of the conveyor roller to the guide channel is easier, namely from outside the guide channel, can be done. Preferably at least one conveyor roller is rotatably mounted outside the guide channel below the lower guide plate and above the upper guide plate and protrudes into the guide channel via at least one passage opening in the upper guide plate and the lower guide plate, the conveyor rollers preferably being braced against each other in the guide channel.

According to a further development of the invention, the device further comprises at least one, preferably 2 to 8, particularly preferably 4 to 6, conveyor roller. Preferably the at least one conveyor roller is elastic. The at least one conveyor roller is preferably fastened to one of the guide plates, the device preferably comprising at least one, preferably 2 to 8, particularly preferably 4 to 6, further conveyor roller. The at least one further conveyor roller is preferably fastened to the other guide plate, wherein the at least one conveyor roller is preferably pretensioned against the at least one further conveyor roller. Preferably, the at least one conveyor roller is freely rotatable on the upper guide plate. Alternatively or additionally, the at least one further conveyor roller is rotatably mounted on the lower guide plate and is preferably driven directly via a drive, such as an electric motor.

Particularly preferably, the at least one conveyor roller comprises a plurality of conveyor rollers which are freely rotatably mounted via a common guide rod. The guide rod is preferably attached to the guide plate via a guide rod mounting. The guide rod mounting preferably comprises two position receptacles. The bearing receptacles are preferably attached to the guide plate at the ends of the guide plate in the cutting direction. The position recordings preferably accommodate the guide rod in a freely rotatable manner at one end, in particular at the downstream end in the conveying direction. Alternatively or additionally, the position receptacles are mounted pivotably with the device at one end, in particular at the end upstream in the conveying direction. The pivotable mounting of the guide plate, in particular the upper guide plate, is preferably produced by the pivotable mounting of the position receptacles. The position receptacles are particularly preferably attached to the device such that they can pivot about the pivot axis of an infeed roller, in particular the upper infeed rollers. By attaching the cutting bar to the guide plate, the movable mounting, in particular the pivotable mounting, of the cutting bar can thereby also be achieved. Alternatively, the position recordings can also be connected directly to the cutting bar and decoupled from the upper guide plate.

The guide rod is preferably adapted in cross section to a recess in the conveyor roller for receiving the same in such a way that the conveyor roller passes through the radial direction Guide rod is fixed. Particularly preferably, a hexagonal recess is provided in the conveyor roller, via which the conveyor roller can be fixed in the radial direction on the guide rod. Retaining rings are preferably provided for axially securing the conveyor roller. In particular, the guide rod is designed with a hexagonal cross section.

According to a further development of the invention, at least one of the guide plates, preferably the pivotable guide plate, is spring-mounted, in particular in the direction of the thickness of the material web, the spring mounting being implemented via a suspension between the guide plate and an in particular pivotably mounted housing wall.

The pivotable guide plate is preferably mounted on a pivot axis which extends parallel to the cutting direction and / or extends at the height of the conveying direction of the insertion opening.

The pivotable guide plate is preferably mounted via a pivot axis which extends in the material web thickness direction below and / or above a guide surface of the pivotable guide plate facing the packaging material web, the pivot axis preferably extending by more than 0 mm and less than 50 mm, particularly preferably by more than 10 mm less than 23 mm, below and / or above the guide surface. In this way, as described in connection with the third aspect of the invention with reference to the cutting bar, it can be ensured in particular that the guide surface of the guide plate is moved towards the cutting path and / or the cutting edge as a result of an increase in the material web thickness in the conveying direction. In particular when attaching the cutting bar to the upper guide plate, this is advantageous in order to maintain the cutting contact between the cutting edge and the cutting bar even when the material web thickness is increased and / or to increase the pretension between the cutting edge and the cutting bar when the material web thickness is increased.

In a further development of the invention, a cutting garage can be provided, in particular to protect against injuries, into which the cutting edge can move, especially when the device is in the idle state. The cutting garage can in particular be attached to one or both ends of the device in the cutting direction. In particular, the cutting edge can move into the cutting garage on one side, in which access to the cutting edge is prevented. The cutting edge in the cutting garage is preferably enclosed by the cutting garage, in particular in the conveying direction, in the direction of the material web thickness and / or at least at one end in the cutting direction. In particular, a Closing mechanism can be provided which can close the insertion opening into the cutting garage after the cutting edge has been retracted, so that in particular the cutting garage is completely enclosed. The insertion opening can in particular be designed as a gap which is adapted to the extent of the cutting edge. In this way, in particular, a closing mechanism can be dispensed with in that the gap is designed so small that an operator cannot intervene.

The device preferably has at least one interface in order to be able to connect a controller, a WLAN module, a LAN module or the like to the device, in order to be able to connect the device in particular from a stationary unit, such as a controller or a stationary computer, or a mobile unit such as a tablet or a mobile phone, for example via the Internet.

Despite the measures described above and below, the occurrence of cutting residues can usually not be completely avoided. In particular, if cutting residues, such as dust, come into contact with heating electrical components, such as drives for the cutting edge or control units, this can cause a safety risk, in particular a fire hazard.

In order to counter this risk, the use of a discharge device has proven to be advantageous, which catches the cutting residues in the gravitational direction below the cutting edge and shields them from the electrical components. For this purpose, the diverting device has a diverting plate underneath the cutting edge, in particular the cutting path along which the cutting edge travels when cutting the packaging material web, which shields the electrical components from cutting residues occurring during cutting. For this purpose, the deflecting plate preferably extends from a fastening point upstream in the conveying direction of the cutting edge, via which the deflecting plate is fastened to the device, in the conveying direction downstream beyond the cutting edge. The deflection plate is preferably inclined in the direction of gravity, so that the packaging residues produced during cutting are carried away in the conveying direction via the deflection plate by utilizing the force of gravity. In the conveying direction, the deflection plate preferably adjoins an output gap for packaging residues, via which the packaging residues can be removed from the device. The discharge gap preferably extends in the cutting direction and in the gravitational direction. It has proven to be advantageous to angle the deflection plate in the conveying direction shortly before the output gap in the gravitational direction. This made it possible, in particular, to improve the removal of packaging material residues. Packaging material residue that does not leave the device through the output gap solely due to the force of gravity can, in particular, be applied manually can be removed from this and / or sucked off. Preferably, the diverting device further comprises diverting side walls, via which an escape of packaging material residues to the side of the diverting plate can be avoided. The deflecting side walls preferably extend in the direction of gravity and in the conveying direction and close in particular to the ends of the deflecting plate in the cutting direction.

It should be clear that each of the listed aspects of the development and the configurations of the aspects can be combined with the other aspects.

Preferred embodiments of the invention are given in the subclaims. Further advantages, features and properties of the invention are explained by the following description of preferred embodiments of the accompanying drawings, in which:

Figure 1 is a perspective front view of a device for cutting a

Packaging material web,

Figure 2 is a perspective rear view of the device from Figure 1,

FIG. 3 shows a perspective front view of the inner workings of the device

Figure 1,

FIG. 4 shows a perspective front view of the inner workings of the device 1 with the upper guide plate pivoted open,

FIG. 5 shows a side view of the inner workings of the device from FIG. 1,

FIG. 6 shows a side view of the inner workings of the device from FIG. 1 with the upper guide plate pivoted open,

Figure 7 is a front view of the cutting wheel and the cutting bar of the device from Figure 1,

FIG. 8 shows a side view of the cutting wheel and the cutting bar of the device from FIG. 1,

FIG. 9 is a perspective view of the cutting wheel and the cutting bar of FIG

Device from Figure 1, FIG. 10 shows a plan view of the inner workings of the device from FIG. 1,

FIG. 11 shows a plan view of the inner workings of the device from FIG. 1, in which the upper conveyor rollers are hidden,

Figure 12 is a schematic representation of the position of the pivot axis of the

Cutting stick,

Figure 13 is a schematic representation of the mounting of the guide plate and the

Cutting stick,

FIG. 14a a perspective view of a section of a cutting bar,

FIG. 14b shows a side view of a section through a cutting bar,

Figure 15 is a schematic representation of the position of the cutting wheel relative to

Cutting contact,

FIG. 16 shows a further schematic representation of the position of the cutting wheel relative to the cutting contact,

FIG. 17 shows a schematic representation of a cutting wheel with a straight cut

Cut surface,

FIG. 18 a schematic representation of a cutting wheel with a curved, ground

Cut surface,

FIG. 19 a schematic representation of the cutting contact between the cutting edge and

Cutting stick and

FIG. 20 shows a perspective view from behind of a cutting residue diverting device.

The same or similar reference symbols are used below for the same or similar components. Devices for cutting a packaging material web are given the reference number 1 below. The device 1 is preferably used for cutting webs of packaging material 3 in the form of webs of corrugated cardboard. Figures 1 and 2 show a preferred embodiment of a device 1. This has a cover housing wall 5 and a base housing wall 7. The housing walls 5, 7 can be formed in one piece. In the embodiment shown here, however, they are formed from several wall sections 5% 5 ", 5"", 5 ^iv , 5 7", 7 ", 7 '". The wall sections 5 ', 5 ", 5"", 5 ^iv , 5 7", 7 ","' are preferably formed from plate sections such as metal sheets or plastic plates. In particular, the wall sections 5 ", 5", 5 "", 5 ^iv , 5 ^V _' , 7', 7 ", 7"'are fastened to the device 1 by means of connecting means 49, such as screws or rivets. The design of the housing walls 5, 7 over a plurality of wall sections has the particular advantage that the device 1 can be manufactured, assembled and disassembled for maintenance in a simplified manner. As shown in FIGS. 1 and 2, preferably at least one handle 9, particularly preferably two handles 9, is attached to the cover housing wall 5. The at least one handle 9 is particularly preferably arranged downstream of an insertion opening 11 in the conveying direction F, in particular an output opening 13 at conveying direction height. The insertion opening 11 is preferably formed by two insertion rollers 15, 17 which are offset from one another and which are spaced apart from one another in particular in the material thickness direction M. In particular, the feed rollers 15, 17 form a slot-shaped feed opening 11 through which the packaging material web 3 is fed to the device 1. The inner workings of the device 1 will be described in detail in connection with FIGS. 3 to 11.

FIGS. 3 to 6 show the inner workings of the device from FIG. 1 in a perspective view and in a side view. The inner workings have, in particular, a cover part 19 and a base part 21. In FIG. 4 and in FIG. 6, the cover part 19 is pivoted relative to the base part 21. The cover part 19 comprises in particular a cutting bar 23, an upper guide plate 25 and upper conveyor rollers 27. The base part 21 comprises in particular a cutting edge 29, a drive via which the cutting edge 29 can be moved in a translatory manner, a lower guide plate 31 and lower conveyor rollers 33. The lower conveyor rollers 33 are preferably driven directly via a drive. The upper conveyor rollers 27 are preferably mounted freely rotatable and are driven indirectly via the lower conveyor rollers 33. The indirect driving of the upper conveyor roller 27 by the lower conveyor rollers 33 is to be understood in particular to mean that a packaging material web 3 which is in engagement with the lower conveyor rollers 27 and the upper conveyor roller 33 and is only shown in FIGS. 1 and 2 is driven by the lower conveyor rollers 33 is, wherein the movement of the packaging material web 3 in the conveying direction F in turn drives the upper conveyor rollers 27. In principle, the upper conveyor rollers 27 can also be driven directly and the lower conveyor rollers 33 can be driven indirectly. However, it has been found to be advantageous to drive the lower conveyor rollers 33, since this enables the cover part 19 to be made smaller and lighter. In particular, can thereby the pivotable attachment of the cutting bar 23, the upper guide plate 25 and / or the conveyor rollers 27 can be realized with a smaller and lighter pivot bearing.

The direction in which the cutting edge 29 moves translationally is referred to in particular as the cutting direction. The direction in which the packaging material web 3 is conveyed in the device 1, in particular through the device 1, is referred to in particular as the conveying direction F. The direction in which the material web thickness extends in the device 1 is referred to in particular as the material web thickness direction M. In the preferred embodiment shown here, the material web thickness direction M corresponds to the gravitational direction G. If the relative position of components is described above or below using the terms "upper" or "lower", the upper is in particular the direction opposite to the gravitational direction G and the lower the direction in gravitational direction G meant.

The fourth aspect of the present invention is shown in particular using the example of FIGS. 3 to 6. FIGS. 4 and 6 show a state in which the upper guide plate 25 has pivoted away from the lower guide plate 31 along the movement path 39. In this state, packaging residues that have accumulated in the guide channel or a packaging material web jammed in this can be removed from the guide channel, so that the operation of the device 1 can continue. Particularly in comparison with the handles 9 shown in FIG. 1, it becomes clear that the pivotable mounting of the upper guide plate 25 means that the device can be put into a cleaning state quickly and even by inexperienced operating personnel.

As can be seen in particular in FIG. 4, the guide surface 109 of the upper guide plate 25 facing the guide channel and the guide surface 111 of the lower guide plate 31 facing the guide channel extend in a flat plane. Furthermore, it can be seen from FIG. 4 in particular that the lower conveyor rollers 33 and the upper conveyor rollers 27 preferably only extend into the guide channel in sections. Furthermore, the lower conveyor rollers 33 and the upper conveyor rollers are arranged at the same height in the cutting direction S, so that they are arranged opposite one another, especially when the upper guide plate 25 is closed, as shown in FIGS. 3 and 5. In particular, the axes of rotation of the upper conveyor rollers 27 and the lower conveyor rollers 33 extend parallel to one another in the closed state of the upper guide plate, in particular in a common plane extending in the cutting direction S and in the rotational direction R. Furthermore, the preferred embodiment can be seen in particular in FIGS. 3 and 4, in which the upper guide plate 25, in particular at its respective ends in the cutting direction, is pivotably mounted relative to the lower guide plate via two bearing receptacles 99. At the same time, the pivotable mounting of the cutting bar 23 is ensured by the fact that the cutting bar 23 is attached to the upper guide plate 25. This arrangement can in particular ensure that both the pivotable mounting of the cutting bar 23 and the upper guide plate 25 are realized via a single pivot mounting. In the particularly preferred embodiment shown here, the pivot mounting is implemented via the pivot mounting of the upper feed roller 15. The preferred embodiment can also be seen from FIGS. 3 to 6, in which the rotatable mounting of the upper conveyor rollers 27 is realized via the position receptacle 99. For this purpose, in particular the upper conveyor tubes 27 are rotatably attached to the bearing receptacle 99 via the guide rod 35. This has the particular advantage that the upper conveyor rollers 27 are also pivotably mounted with respect to the device 1. Thus, in the embodiment shown here, the pivotable mounting of the upper conveyor rollers 27, the upper guide plate 25 and the cutting bar 29 can be implemented via a single pivot bearing. For this purpose, the cutting bar 29 is connected to the upper guide plate in particular via screw connections 71.

In particular, a comparison of FIG. 5 and FIG. 6 shows how the pivotable mounting of the upper guide plate 25 and the cutting bar 29 is preferably implemented. Furthermore, it can be seen in particular from FIG. 6 that the upper guide plate 25 is preferably designed as a flat plane on both sides. The upper feed roller 15 and the lower feed roller 17 are preferably both freely rotatably mounted. In particular, the axis of rotation 113 of the upper infeed roller 15 and the axis of rotation 115 of the lower infeed roller 17 extend in the cutting direction S. Preferably, the axis of rotation 113 of the upper infeed roller 15 corresponds to the pivot axis 37 of the cutting bar 23. In particular, the axis of rotation 113 of the upper infeed roller 15 and the Axis of rotation 115 of the lower infeed roller 17 in a common plane extending in the cutting direction S and in the material web thickness direction M, in particular in the gravitational direction G.

The pivotably mounted components described above and below are preferably attached to the device 1 via a pivot bearing 117, in particular via two pivot bearings 117. The pivot bearings are preferably formed on the insertion opening 11, in particular on the insertion rollers 11, 13. In particular, a pivot bearing 117 comprises a shaft 119 which is rotatably mounted about the pivot axis 37 and to which the respective component is fastened at a distance from the pivot axis 37. It should be clear that under fastening is not to be understood in particular that the component is directly with the rotatably mounted shaft 119 must be connected. Rather, it is preferred that, for example, the cutting bar 23 and / or the upper guide plate 25 is connected to the rotatably mounted shaft 119 via a coupling element, such as the bearing receptacle 99 shown here. Furthermore, the pivot bearing 117 comprises, in particular, a shaft receptacle 121 with respect to which the rotatably mounted shaft 119 is rotatably mounted. The shaft receptacle 121 is preferably connected to the device 1 at its end downstream in the conveying direction F and receives the rotatably mounted shaft 119 preferably at its end upstream in the conveying direction F.

Particularly preferably, the shaft receptacle 121 also accommodates the upper and / or the lower feed roller 15, 17 in a rotatable manner. The rotatably mounted shaft 119 is preferably picked up in the conveying direction F upstream of the upper guide plate 25 and / or the lower guide plate 31. In particular, the shaft receptacle extends in an L-shape from the device 1 in the direction opposite to the conveying direction F and in the area of the pivot bearing 117 in the direction of the web thickness, especially in the direction of gravity G.

FIG. 7 shows a detail from FIGS. 3 and 5 in a front view of the cutting edge 29 and the cutting bar 23. FIG. 8 shows a detail from FIGS. 3 and 5 in a side view of the cutting edge 29 and the cutting bar 23. FIG. 9 shows a detail in FIG Perspective view of the cutting edge 29 and the cutting remnants 23. The cutting edge is designed as a freely rotatable cutting wheel 29 therein. The axis of rotation 51 of the freely rotatable cutting wheel extends in the conveying direction F. The pretensioning between cutting wheel 29 and cutting bar 23 creates a frictional force 53 between cutting wheel 29 and cutting bar 23. Frictional force 53 is particularly effective in cutting contact 43 between cutting edge 29 and cutting bar 23 and extends in the direction opposite to the cutting direction S. The cutting contact 43 is offset in particular in the direction M of the material web thickness relative to the axis of rotation 51. The offset of the axis of rotation 51 to the cutting contact 43 is identified by the reference number 55.

As can be seen in FIGS. 7 to 9, the cutting bar and / or the cutting edge is implemented via a fine adjustment mechanism in the form of screw connections 71, 73, 75. The cutting bar is attached to an upper guide plate 25 via at least one screw connection 71, preferably 2 to 12 screw connections. In this case, the at least one screw connection 71 is preferably designed as an elongated hole connection which extends longitudinally, in particular in the conveying direction, in order to be able to vary the position of the cutting bar 23 in the conveying direction F. In FIGS. 7 to 9, the cutting wheel 29 is designed with a cutting surface as a serrated edge. The cutting wheel 29 is preferably a Slide 77 connected to the drive in order to be able to move the cutting wheel 29 back and forth in a translatory manner. The cutting wheel 29 is connected to the slide 77 in particular via a screw connection 73, which in particular is part of the freely rotatable mounting of the cutting wheel 27. The slide 77 is designed in particular as an L-shaped profile which is connected to the cutting wheel 29 at a section extending in the direction of material web thickness M and is connected to the drive at a section extending in the conveying direction F. The screw connection 73 is preferably designed as a slot connection, which extends in particular in the material web thickness direction M, so that in particular the position of the cutter 29 in the material web thickness direction M can be adjusted. Furthermore, the carriage 77 is preferably attached to the drive via at least one screw connection 75, in particular in the form of an elongated hole connection. The elongated hole connection extends longitudinally, preferably in the conveying direction F, so that the position of the carriage 77 and in particular of the cutter 29 attached to the carriage can be adjusted in the conveying direction F. As an alternative or in addition to these possibilities of positioning the cutting edge 29 relative to the cutting bar 23, a coarse adjustment mechanism, for example in the form of several bores for the screw connections 71, 73, 75, can be provided. In particular, the conveyor roller axis 123 extends parallel to the pivot axis 37 of the cutting bar 23 or the guide plate 25.

FIG. 10 shows a plan view of the device 1 as shown in FIGS. 3 and 5. The packaging material web 3 is preferably conveyed through the device 1 via a conveying device. The conveyor device F preferably comprises at least one upper conveyor roller 27 and at least one lower conveyor roller 33. In particular, several, here five, upper and lower conveyor rollers 27, 33 are aligned coaxially with one another. In particular, the upper conveyor rollers 27 and the lower conveyor rollers 33 are each aligned along a common conveyor roller axis 123 extending in the cutting direction S. The conveyor rollers 27, 33, in particular the upper conveyor rollers 27, are preferably fastened to a guide rod 35. The conveyor rollers 27 can be attached rotatably relative to the guide rod 35 or can be fixedly attached to the guide rod 35. It has been found to be particularly advantageous to fasten the conveyor rollers 27 firmly to the guide rod 35 and to realize the rotatable mounting of the conveyor rollers 27 by a rotatable mounting of the guide rod 35. The fixed connection of the conveyor rollers 27 with respect to the guide rod 35 can in particular be realized by a form fit of the guide rod 35 with respect to recesses in the conveyor rollers 27. For this purpose, the guide rod 35 is preferably angular, in particular hexagonal. For the axial fixation of the conveyor rollers 27, in particular locking rings 125 are provided. The guide rod 35 is in particular rotatable at least one bearing seat 99, preferably on two bearing seats 99 positioned at the axial ends of the guide rod 35. This embodiment has proven to be particularly advantageous because it allows several, in particular five, conveyor rollers 27 to be rotatably mounted via one or two bearing receptacles 99.

The position receptacles 99 are in particular attached to the upper guide plate 25, in particular to the ends of the upper guide plate 25 in the cutting direction S. The conveyor rollers 27 can thereby also be pivoted relative to the lower guide plate 31 via the pivot axis 37 of the cutting bar 23 or the guide plate 25. As can be seen in particular from FIG. 10, the cutting bar 23 is preferably attached to the end of the upper guide plate 25 that is downstream in the conveying direction F. The upper infeed roller 15 is particularly positioned upstream of the upper guide plate 25 in the conveying direction F.

FIG. 11 corresponds to FIG. 10, the upper conveyor rollers 27 and the guide rod 35 being hidden. In particular, the passage openings 127 in the upper guide plate 25 can be seen therein. The passage openings 127 are adapted to the axial and radial extension of the conveyor rollers 27, 33. In particular, the passage opening 127 is adapted to the dimensions of the conveyor rollers, in particular to the area of the conveyor rollers 27, 33 that protrudes into the conveying path, so that the passage opening 127 can serve as a guide for the conveyor rollers in the cutting direction S and / or in the conveying direction F. As a result, the requirements for the axial fastening of the conveyor rollers 27, 33 on the guide rod 35 in particular decrease. Furthermore, FIG. 11 enables a view through the passage opening 127 onto the lower conveyor rollers 33.

In FIG. 12, the pivot axis 37 of the cutting bar 23 is indicated schematically in various positions 37 ″, 37 ″, 37 ″ and the resulting movement paths 39 ″, 39 ″, 39 ″ ′ of the cutting bar 23. Furthermore, the cutting edge 29 is indicated schematically in FIG. The pivot radius 93 is shown via the connecting lines between the different positions of the pivot axis 37 ″, 37 ″, 37 ″ ″ and the cutting contact 43. The different distances depending on the positioning of the pivot axis 37 ", 37", 37 "'to the cutting contact 43 are shown with the reference number e. As can be seen in particular from the movement path 39 ', the positioning of the pivot axis 37' above the cutting contact 43 means that a movement of the cutting bar in the direction opposite to the direction of the material web thickness leads to a movement of the cutting bar onto the cutting path, in particular onto the cutting contact . In contrast, the pivot axis 37 ″, 37 ″ ″ would be positioned below the cutting contact 43 or at the level of the pivot axis 43, as illustrated by the movement paths 39 ″ and 39 ″ ′ lead a movement of the cutting bar 23 away from the cutting path when the cutting bar is pivoted in the direction opposite to the direction M of the material web thickness. It has been found to be particularly advantageous to design the distance e between the cutting contact 43 and the pivot axis 37 to be greater than 0 mm and less than 50 mm, in particular greater than 10 mm and less than 23 mm.

The advantageous positioning of the pivot axis 37 of the cutting bar 37 ″ to the cutting contact 43 illustrated in FIG. 12 can be transferred in particular to the positioning of the pivot axis of the upper guide plate 25 to the cutting contact 43.

FIG. 13 shows a schematic representation of a device 1 in which the cutting bar 23, an upper conveyor roller 27, a lower conveyor roller 31, an upper guide plate 25, a lower guide plate 31 and a cover housing wall 5 are shown schematically. Furthermore, a pivot axis 37 of the cutting bar 23, the guide plate 25 and the cover part 5 is shown schematically in FIG. In addition, the distance 41 between the upper guide plate 25 and the lower guide plate 33 in the material web thickness direction M is indicated schematically in FIG. The dispensing opening 13 preferably extends over a gap in the cutting direction S and in the material web thickness direction M over the distance 41. The distance 41 preferably extends over 1 mm to 10 mm, particularly preferably over 2 mm to 8 mm or 2 mm to 3 mm. In this way, in particular, it can be largely avoided that packaging residues get into the guide channel 93 between the guide plates 25, 31.

As is particularly clear from FIG. 13, an increase in the material web thickness 95 can lead to a lifting of the housing wall 5, 25, in particular in the form of an upper guide plate 25 and / or a cover housing half 5, which in turn can raise a cutting bar 23 which is attached to the housing wall 5, 25, in particular to the upper guide plate 25 and / or the upper cover-housing half 5. By fastening the cutting bar 23 to the housing wall 5, 25, it is ensured in particular that the lifting of the housing wall 5, 25 also causes the cutting bar 23 to be lifted. At the same time, the pivoting mounting of the housing wall 5, 25 causes the housing wall 5, 25 to be shifted to the cutting path, in particular to the cutting contact 43, due to the lifting, in particular in the direction opposite to the material web thickness direction M, of the housing wall 5, 25. In particular, by fastening the cutting bar 23 to the housing wall 5, 25, the movement of the housing wall 5, 25 towards the cutting path will also bring about a movement of the cutting bar 23 towards the cutting path. As can also be seen in FIG. 13, the spring mounting of the housing wall can be implemented by a spring 97 arranged between the upper guide plate 25 and the cover housing wall 5.

FIG. 14a shows a perspective view of a section of a cutting bar 23. FIG. 14b shows a sectional view of a cutting bar 23. It can be seen how the inlet side 81 extends from the illustrated longitudinal end 79 of the cutting bar 23 to the contact side 61 and merges into it. The inlet angle is shown with the reference symbol d. The inlet side 81 preferably extends along a flat plane. In addition, FIGS. 14a and 14b show a preferred embodiment of a protective bevel 65 with the associated protective angle m. Furthermore, the cutting bar guide surface 85 can be seen, which preferably extends parallel to a plane extending in the cutting direction S and in the conveying direction F. The transition between the cutting bar guide surface 85 and the protective bevel 65 is implemented in the preferred embodiment shown here via a connecting section 87 which extends from the upstream end of the protective bevel 65 to the upstream end of the cutting bar guide surface 85 in the direction opposite to the material thickness direction M. Furthermore, a cutting bar delimiting section 89 is shown, one of which is preferably formed at each of the longitudinal ends 79 of the cutting bar. In FIG. 14a, a bore 91 is shown in the cutting bar 23, via which the cutting bar 23 can be connected to a guide plate 25.

FIGS. 15 and 16 show a schematic representation of the position of the cutting wheel 29 relative to the cutting contact 43. In FIG. 15, an advantageous positioning of the axis of rotation 51 of the freely rotatable cutting wheel 29 with respect to the cutting contact 43 is shown. FIG. 16 shows a less advantageous positioning of the axis of rotation 51 relative to the cutting contact 43. The cutting contact 43 is shown as a linear contact. The axis of rotation 51 is offset in particular in the material web thickness direction M by the offset 55 to the cutting contact 43. The vector 57 extends in particular from the axis of rotation 51 to the end, in particular end point 59, of the cutting contact in the cutting direction S. As is clear in the comparison of FIGS. 15 and 16, a reduction in the vector angle a results in particular from a reduction in the attachment 55 between the axis of rotation 51 and cutting contact 43. Furthermore, the vector angle α depends on the diameter of the cutting wheel.

FIG. 17 shows a schematic side view of a cutting wheel 29 with a straight, ground cutting surface 45, whereas FIG. 18 shows a schematic partial view of a cutting wheel with a curved, ground cutting surface 45. The cut surfaces 45 extend in particular in the form of cone jacket sections 67 which taper in particular in the conveying direction F. In Figure 17, an advantageous embodiment with a tail angle ß of approximately 45 ⁰ shown. The cutter 29 preferably comprises a cutting wheel surface 69 ′ facing the cutting bar and a cutting wheel surface 69 ″ facing away from the cutting bar. The clearance angle g formed according to the second aspect of the present invention is shown in FIG. This extends in particular between the contact side 61 of the cutting bar 23 and the cutting wheel surface 69 'of the cutting edge facing the cutting bar 23. To determine the clearance angle g, the cutting wheel surface 69 ′ can in particular be simplified as a plane which has the F and / or the axis of rotation 51 of the cutting wheel 29 as a normal vector. This is particularly relevant if the cutting wheel 29 and / or the cutting bar is elastically deformed due to a pretension between the cutting wheel 29 and the cutting bar 23. Starting from the cutting wheel surface 69 ′, the contact side 61 is inclined away from the cutting wheel 29 by the clearance angle g about an axis extending in the cutting direction S. In particular, the contact side 61 extends from the cutting contact 43 in the direction opposite to the material thickness direction M, in particular the gravitational direction G.

FIG. 19 shows a schematic representation of the cutting contact 43 between the cutting edge 29 and the cutting bar 23. In particular, a linear cutting contact 43 between a contact edge 63 of the cutting bar 23 facing the cutting edge 29 and the cutting wheel 29 is shown. In particular, a contact side 61 extends from the contact edge 63 essentially in the direction opposite to the direction M of the material web thickness. A protective bevel 65 extends from the contact edge 63 in the opposite direction to the conveying direction F. The contact edge 63 protrudes into the cutting path of the cutter 29 so that the cutter 29 is pretensioned against the cutting bar 23, in particular the contact edge 63. The cutting wheel surface 69 ′ facing the cutting bar 23 is preferably biased against the cutting bar 23, in particular against the contact edge 63.

The cutting contact 43 is preferably formed between a contact edge 63 of the cutting bar 23 and the cutting wheel surface 69 ′ facing the cutting bar 23. As can be seen in FIG. 19, both the contact side 61 of the cutting bar 23 and the cutting wheel surface 69 ′ facing the cutting bar 23 are preferably designed as flat surfaces.

FIG. 20 shows a perspective view from the rear of a diverting device 47 for diverting packaging material residues, such as dust and snippets, which arise in particular when the packaging material web is cut. The discharge device 47 is preferably below the cutter 29 and / or the Cutting bar 23 attached. In particular, the diverting device 47 extends in the cutting direction over the entire travel path of the cutting edge and in the conveying direction upstream and downstream of the cutting edge in order to catch packaging material residues occurring during cutting as well as possible. In particular, the discharge device 47 is positioned in such a way that it shields packaging material residues that arise during cutting from electrical components such as drives and control units. In particular, the diverting device 47 comprises a diverting plate 103 which, starting from a horizontal plane, is inclined in the gravitational direction G. In particular, the diverting plate 103 is inclined towards an output gap 107, via which the packaging material residues can be discharged or removed from the device 1. The deflection plate 103 is particularly preferably angled in the direction of gravity in the area of the output gap 107. As a result, the deflection plate 103 extends in the conveying direction in a first section along a plane inclined in the direction of gravity and in a second section along a plane inclined further in the direction of gravity G with respect to the first section. Diverting side walls 105 preferably adjoin the ends of diverting plate 103 in order, in particular, to prevent packaging material residues from escaping laterally of diverting plate 103 into device 1. The dispensing gap 107 is preferably made in a wall section of the housing wall. In Figure 1, the output gap 107 is not shown. However, the discharge gap 107 preferably extends in the wall section 7 ″, which extends in particular in the direction of rotation G and in the cutting direction S, in particular as a flat plane.

The features disclosed in the above description, the figures and the claims can be important both individually and in any combination for implementing the invention in various configurations.

LIST OF REFERENCE SIGNS: l device for cutting a packaging material web

3 sheet of packaging material

5 Cover housing wall

7 Basic housing wall

9 handle

li insertion opening

13 Dispensing opening

15 upper feed roller

17 lower feed roller

19 cover part

21 base part

23 cutting stick

25 upper guide plate

27 upper conveyor roller

29 cutter / cutter wheel

31 lower guide plate

33 lower conveyor roller

35 guide rod

37 Pivot axis of the cutting bar / guide plate

39 Path of movement of the cutting bar / guide plate

41 Distance between upper guide plate and lower guide plate 43 cutting contact

45 cut surface

47 Discharge device for cutting residues

49 Lanyards

51 Axis of rotation of the freely rotating cutting wheel

53 frictional force

55 Offset between axis of rotation and cutting contact

57 Vector between axis of rotation and cutting contact

59 End point of cutting contact

61 Contact Page

63 contact edge

65 protective bevel

67 cone shell section

69 'the cutting wheel face facing the cutting bar

69 “cutting wheel surface facing away from the cutting bar 71 Screw connection between cutting stick and upper guide plate

73 Screw connection for fastening the cutting edge to a slide

75 Screw connection for coupling the slide to a drive

77 sledges

77 Connection section of the slide with the cutting edge

77 Connection section of the slide with the drive

79 Longitudinal ends of the cutting stick

81 run-in area

85 Cutting Stick Guide Surface

87 Connection section between cutting bar guide surface and protective bevel

89 Cutting Stick Limiting Section

91 bore

93 swing radius

95 sheet thickness

97 spring

99 Position survey

103 deflection plate

105 deflectors

107 Output gap for packaging scraps

109 Guide surface of the upper guide plate

111 Guide surface of the lower guide plate

113 Axis of rotation of the upper feed roller

115 Axis of rotation of the lower feed roller

117 swivel bearings

119 rotatably mounted shaft

121 wave recording

123 conveyor roller axis

125 retaining ring

127 openings

S cut direction

F direction of travel

M web thickness direction

G Direction of gravitation e Distance between pivot axis and cutting contact

a vector angle

ß grinding angle g Free angle d Inlet angle m Protective angle

Claims

Expectations:

1. Device (l) for cutting a packaging material web (3), such as one

Corrugated cardboard sheet, comprising:

a freely rotatably mounted cutting wheel which can be moved translationally by a drive in the cutting direction (S) in order to cut the packaging material web (3), and a cutting bar (23) against which the cutting wheel (29) is pretensioned in the axial bearing direction.

2. Device (1) according to claim 1, wherein the cutting bar (23) protrudes in the axial bearing direction in a cutting path along which the cutting wheel (29) for cutting the

Packaging material web (3) moves.

3. Device (1) according to claim 1 or 2, wherein the bias between the

Cutting wheel (29) and the cutting bar (23) is produced by elastic deformation of the cutting wheel and / or the cutting bar (23), preferably one by the

Pre-tensioning between the cutting wheel (29) and the cutting bar (23) on a pre-tensioning force acting radially to an axis of rotation (51) of the rotatably mounted cutting wheel

spaced cutting contact between cutting wheel (29) and cutting bar (23) acts, in particular acts in the axial bearing direction.

4. Device (1) according to one of the preceding claims, wherein an axis of rotation (51) of the rotatably mounted cutting wheel extends in the conveying direction (F).

5. Device (1) according to one of the preceding claims, wherein an axis of rotation (51) of the rotatably mounted cutting wheel is offset in relation to a cutting contact between cutting wheel (29) and cutting bar (23) in the material web thickness direction (G), preferably in the material web thickness direction (G) extends below the cutting contact and / or a vector extending from the axis of rotation (51) radially to the cutting contact, in particular in cutting engagement with the packaging material web (3), by 20 ° to 8o relative to a plane extending in the axial bearing direction and in the cutting direction (S) °, 50 ° to 70 ° or 55 ⁰ to 65 °.

6. Device (1) according to one of the preceding claims, wherein for setting one acting by the bias between the cutting bar (23) and cutting wheel (29) Pre-tensioning force, the position of the cutting bar (23) in relation to the cutting wheel, in particular in the conveying direction, is adjustable via a fine adjustment mechanism such as an elongated hole connection and / or via a coarse adjustment mechanism such as a locking connection with several stages.

7. Device (1) according to one of the preceding claims, wherein the cutting wheel (29) is driven by a DC motor and / or wherein the device (1) comprises a conveyor for conveying the packaging material web (3) which is driven by a DC motor.

8. Device (1), in particular according to one of the preceding claims, for cutting a packaging material web (3), such as a corrugated cardboard web, comprising:

a cutting wheel which can be moved translationally by a drive in the cutting direction (S) in order to cut the packaging material web (3), and

a cutting bar which forms a cutting contact with the cutting wheel (29) and comprises a contact side (61) facing the cutting wheel (29) which is at a clearance angle (y) of at least one degree to the cutting wheel surface (69 ") facing the cutting bar (23) is inclined.

9. Device (1) according to claim 8, wherein the clearance angle (y) from 0.1 ° to 45 ^0, in particular i ° to 15 ^0, preferably ⁰ to 2 io °, particularly preferably up to 8 °, is at least 3 ^0th

10. The device (1) according to claim 8 or 9, wherein the cutting contact is essentially designed as a linear contact between the contact side (61) and the cutting wheel surface (69 ″), wherein the cutting contact is preferably in cutting engagement with the

Packaging material web (3) is formed at points and / or wherein the contact side (61) and / or the cutting wheel surface (6g ‘) extends in a flat plane.

11. Device (1) according to one of claims 8 to 10, wherein the cutting bar (23) is hardened, preferably such that the cutting bar (23) is harder than the cutting wheel, and / or wherein the cutting wheel (29) is ground, especially with one

Grinding angle (ß) from 20 ⁰ to 50 ° or from 30 ° to 40 °.

12. Device (1) according to one of claims 8 to 11, wherein the cutting bar (23)

has at least one inlet side (81) facing the cutting wheel (29) which is used to gradually pretension the cutting wheel by an inlet angle (δ) of at least one degree, in particular from i ° to 15 ⁰ , 2 ⁰ to 10 ° or 3 ⁰ to 8 ° , is inclined to the cutting wheel surface (69 ″) facing the cutting bar (23), preferably wherein the Infeed angle (d), starting from a plane extending in the material web thickness direction (G) and in the cutting direction (S), is inclined around an axis extending in the material web thickness direction (G) and / or the inlet side (81) preferably overlaps in the cutting direction (S) a distance of 2 mm to 30 mm, 4 mm to 20 mm or 6 to 10 mm.

13. Device (1) according to one of claims 8 to 12, wherein the cutting bar (23) in

Conveying direction (F) upstream of the cutting contact a protective bevel (65) for

Has braking the packaging material web (3), in particular by one

To prevent the cutting wheel from being pushed away from the cutting bar (23), preferably the protective bevel (65) starting from a plane extending in the conveying direction (F) and in the cutting direction (S) by a protective angle (m), in particular from 10 ° to 60 ° or 20 ° to 30 °, is inclined about an axis extending in the cutting direction (S), in particular, starting from the cutting contact, is inclined away from the packaging material web (3) in the material thickness direction.

14. Device (1), in particular according to one of the preceding claims, for cutting a packaging material web (3), such as a corrugated cardboard web, comprising:

a cutting edge which moves along a cutting path to cut the packaging material web (3), and

a cutting contact with the cutting edge (29) forming cutting bar which is used for

Execution of a movement relative to the cutting path is movably mounted so that the cutting bar (23) follows a variation in the material web thickness (95) in the conveying direction (F).

15. The device (1) according to claim 14, wherein the cutting bar (23) is mounted such that an increase in the material web thickness (95) causes a relative movement of the cutting bar, in particular in the conveying direction, towards the cutting path and / or a

A reduction in the material web thickness (95) causes a relative movement, in particular in the conveying direction, away from the cutting path.

16. The device (1) according to claim 14 or 15, wherein the cutting edge (29) against the

Cutting bar (23) is pretensioned in the conveying direction (F) of the packaging material web (3) and an increase in the thickness of the material web (95) increases the acting due to the bias between the cutting edge (29) and the cutting bar (23)

Tension causes.

17. Device (1) according to one of claims 14 or 16, wherein the cutting bar (23) is attached to a housing wall, in particular a guide plate (25, 31), which is movably mounted such that the housing wall a variation of the

Material web thickness (95) follows in the conveying direction (F), preferably the

Housing wall has at least one conveyor roller (27, 33) which is in engagement with the packaging material web (3) and as a result of a fluctuation of the

Material web thickness (95) is moved in the material web thickness direction (G), in particular the housing wall is moved in the conveying direction (F), and / or wherein the

Housing wall is spring-mounted in particular in the material web thickness direction (G).

18. Device (1) according to one of claims 14 to 17, wherein the cutting bar (23) is mounted on a pivot axis (37) which extends parallel to the cutting path and / or at the height of the conveying direction of an insertion opening (11) of the device (1) , via which the packaging material web (3) is fed to the device (1).

19. Device (1) according to one of claims 14 to 18, wherein the cutting bar (23) is mounted via a pivot axis (37) which extends in the material web thickness direction (G) above the cutting contact, which preferably extends as a linear contact in the cutting direction (S. ) extends between a contact side of the cutting bar (23) facing the cutting edge (29) and a cutting side surface of the cutting edge (29) facing the cutting bar (23), the pivot axis (37) preferably extending by more than 0 mm and less than 50 mm, particularly preferably by more than 10 mm and less than 23 mm above the cutting contact.

20. Device, in particular according to one of the preceding claims, for cutting a packaging material web (3), such as a corrugated cardboard web, comprising:

an insertion opening through which the packaging material web (3) is fed to the device (1),

a cutter cooperating with a cutting bar (23) for cutting the packaging material web (3), and

a guide channel extending in the conveying direction (F) between the insertion opening (11) and the cutting edge (29) which is delimited by a lower and an upper guide plate (25, 31), one of the guide plates (25), preferably the upper guide plate (25) is mounted pivotably with respect to the other guide plate (31).

21. The device (1) according to claim 20, wherein the pivotable guide plate (25) is pivotably mounted in such a way that it is a variation of the material web thickness (95) in

The conveying direction (F) follows, the pivotable guide plate (25) preferably at least one conveyor roller (27, 33) which is in engagement with the

Packaging material web (3) is and as a result of a fluctuation in

Material web thickness (95) is moved in the material web thickness direction (G), the at least one conveyor roller (27, 33) preferably transmitting force with the

pivotable guide plate (25) is connected, in particular is rotatably attached to the pivotable guide plate (25), wherein the at least one conveyor tube (27, 33) is preferably elastic.

22. The device according to claim 20 or 21, wherein the sides of the guide plates (25, 31) facing the packaging material web (3) run essentially parallel to one another and in the material web thickness direction (G) preferably by a distance (e) of more than 1 mm and less than 100 mm, particularly preferably more than 2 mm and less than 8 mm, are spaced apart.

23. Device (1) according to one of claims 20 to 22, wherein the pivotable

Guide plate (25) is mounted on a pivot axis (37) on

The height of the conveying direction of the insertion opening (11) extends, and / or wherein the cutting bar (23) in the conveying direction (F) at the downstream end of the pivotable

Guide plate (25) is attached.

24. Device (1) according to one of claims 20 to 23, wherein in one, preferably in both, guide plate (25, 31), at least one, preferably two to eight, particularly preferably four to six, passage opening is formed, whereby through the at least one passage opening extends at least one, preferably two to eight, particularly preferably four to six, conveyor rollers (27, 33) into the guide channel, with the at least one conveyor roller (27, 33) preferably outside the

Guide channel is particularly freely rotatable.

25. Device (1) according to one of claims 20 to 24, further comprising at least one, preferably two to eight, particularly preferably four to six, conveyor roller, wherein preferably the at least one conveyor roller (27, 33) on one of the guide plates (25, 31) is attached, the device (1) preferably comprising at least one, preferably two to eight, particularly preferably four to six, further conveyor rollers (27, 33), which are preferably attached to the other guide plate (25, 31), preferably the at least one conveyor roller (27, 33) against the at least one further conveyor tube

(27, 33) is biased.

26. Device (1) according to one of claims 20 to 25, wherein at least one of the guide plates (25, 31), preferably the pivotable guide plate (25), in particular in the material web thickness direction (G) is spring-loaded, the

Spring mounting is realized via a suspension between the guide plate (25, 31) and a particularly pivotably mounted housing wall.

27. Device (1) according to one of claims 20 to 26, wherein the pivotable

Guide plate (25) is mounted on a pivot axis (37) which extends parallel to the cutting direction (S) and / or extends at the height of the conveying direction of the insertion opening (11)

28. Device (1) according to one of claims 20 to 27, wherein the pivotable

Guide plate (25) is mounted on a pivot axis (37) which is in

Material web thickness direction (G) above and / or below one of the

Packaging material web (3) facing guide surface of the pivotable

Guide plate (25) extends, the pivot axis (37) preferably extending by more than 0 mm and less than 50 mm, particularly preferably by more than 10 mm and less than 23 mm, above and / or below the guide surface.