Cutting device for cutting segments for energy cells from a conveyed continuous web

Abstract

The invention relates to a cutting device for cutting off segments (7) for energy cells from a continuous web (5) which is fed into a gap (6) in a cutting plane (I), according to the invention, the cutting device has a cutting rotation mechanism which is arranged on one side of the gap (6) and is driven by means of a first drive mechanism (100) for a rotational movement about an axis of rotation, said cutting rotation mechanism having at least one cutting blade (3), in particular a cutting drum (1), which projects radially outward from a boundary surface of the cutting rotation mechanism, the invention relates to a cutting drum (2) for cutting a continuous web (5), comprising at least one cutting blade (3) which projects radially outward from the circumferential surface of the cutting drum (2), the cutting edge (9) of the cutting blade (3) sliding in a point contact (S) on the cutting edge (8) of a counter blade (4) during a rotary movement of a cutting rotary mechanism, in particular of the cutting drum (1), during the cutting of the continuous web (5), and the first drive mechanism (100) is subjected to torque adjustment at least during the slippage of the cutting edge (9) of the cutting blade (3) on the cutting edge (8) of the counter blade (4).

Description

Technical Field

[0001] The invention relates to a cutting device for cutting segments for energy cells from a conveyed continuous web having the features of the preamble of claim 1 . Background Art

[0002] Energy cells or energy storage devices in the sense of the present invention are used, for example, in motor vehicles, other land transport vehicles, ships, aircraft or also in stationary devices, such as photovoltaic devices or fuel cells in the form of battery cells, where very large amounts of energy must be stored within a relatively large period of time. For this purpose, such energy cells have a structure consisting of a number of segments stacked in a pile. These segments are respectively formed by alternating anode blades and cathode blades, which are separated from each other by separator blades that are also manufactured as segments. In the manufacturing process, the segments are pre-cut and then stacked up and down in a predetermined order and connected to each other by lamination. Here, the anode blades and cathode blades are first cut from a continuous web and then separately laid on a continuous web of insulating material at intervals. Then, in a second step, this subsequently formed "double-layer" continuous web consisting of insulating material together with the laid anode blades or cathode blades is cut into segments again with a cutting device, wherein the segments are formed in this case in a double layer by separator blades together with the anode blades or cathode blades arranged thereon. If this is feasible or necessary in terms of manufacturing technology, the continuous web of the separator material together with the laid anode blades and cathode blades can also be laid one above the other before cutting, so that a continuous web of a first continuous layer of separator material together with the anode blades or cathode blades laid thereon and a second continuous layer of separator material together with the anode blades or cathode blades laid thereon again is formed. Then, this "four-layer" continuous web is cut into segments by means of a cutting device, and the segments are formed in four layers in this case with the first separator blade, the anode blade, the second separator blade and the cathode blade resting thereon. The advantage of this solution is that cutting can be saved. In addition, it is also possible to lay another continuous web of separator material on a prefabricated "double-layer" continuous web with a continuous web of separator material and laid electrodes, so as to form a "three-layer" continuous web, and then cut three-layer segments from this "three-layer" continuous web accordingly. Therefore, segments in the sense of the present invention are single-layer segments of separator material, anode material or cathode material, double-layer, three-layer or four-layer segments of the above-mentioned structure.

[0003] Today, battery cells for electric vehicles are manufactured on production plants with a capacity of 100 to 240 single-chamber cells per minute. These plants operate in partial areas or continuously with pulsed intermittent movements, such as back-and-forth movements, and are therefore limited in terms of production efficiency. Most known machines operate in a monolithic stacking method (e.g., "pick and place"), which has the disadvantage of a relatively slow process. Lamination of the cell structure (Zellformation) is not possible here.

[0004] Another known solution is a machine with a continuously running material web and a pulsed tool, such as, for example, a cutting knife, a tool for varying the indexing.

[0005] In principle, machines with pulsed motion are limited in terms of power. Components with mass, such as holders and tools, must be constantly accelerated and braked. This process determines the time course and consumes a lot of energy. The mass of the moving parts cannot be reduced arbitrarily. Faster moving parts often have to withstand higher loads and therefore become even more expensive and heavier.

[0006] In order to reduce the production costs of battery production, it is necessary to increase the production efficiency of the machine. A condition for high production efficiency is a high production rate of energy cell stacks, which are formed from a plurality of segments of the above-mentioned type stacked one above the other.

[0007] In order to achieve a very high productivity, it is desirable to continuously feed a continuous web of segmented material and then cut the segments from the continuously fed continuous web by means of a cutting device in a continuous process. This is the case in particular for anode and cathode leaves which are cut and then laid at intervals on the continuous web of separator material.

[0008] For example, DE 10 2017 216 213 A1 discloses a device for producing energy cells using a cutting device. Here, the cutting device is implemented in the form of a laser cutting device, which has a laser aimed at the circumference of a drum and cuts segments from a continuous web guided on the drum. The disadvantage of such a cutting device is that the cutting process requires very precise control of the laser. If the laser beam cannot be aimed directly at the continuous web to be cut, the laser beam is deflected by a scanner that is fixed relative to the continuous web (remote laser cutting). The scanner includes, in particular, a reflector and an assigned motor, which, due to their limited dynamics, limit the speed of the cutting process.

[0009] From document US Pat. No. 6,585,846 B1, a device is also known in which segments are cut from a continuous web by means of a cutting drum with one or more cutting knives and a counter drum with one or more counter knives, which are driven for rotational movement. The cutting drum and the counter drum are driven in opposite directions of rotation at the same rotational speed, so that they have the same circumferential speed in mutually opposite sections of the circumference with respect to the movement of the conveyed continuous web, in the same orientation. The cutting edges of the cutting knives and the counter knives are arranged parallel to the axes of rotation of the cutting drum and the counter drum and perpendicular to the rotational movement and produce a vertical linear cut through the continuous web passing between the cutting drum and the counter drum in order to cut the segments.

[0010] However, this solution has the disadvantage that the rotational movements of the cutting drum and the counter drum must be coordinated very precisely with one another and, in particular, rotational speed differences must be avoided in all cases, since otherwise a clean cut of the continuous web cannot be achieved. Furthermore, the blades of the cutting knife and the counter knife cut through the continuous web simultaneously over their entire length, for which correspondingly high cutting forces are required. As a result, the cutting width that can be achieved is limited and increased blade wear occurs, with a reduction in the cutting quality.

[0011] A device is also known from document WO 2019 / 092 585A2, which has two cutting drums driven for oppositely directed rotational motion, each of which has a cutting knife. The cutting drum is arranged so that the cutting circles of the blades defined by the blades of the cutting knives do not overlap, wherein the spacing of the cutting circles should be 1 to 10 μm. The driven rotational motions of the two cutting drums are coordinated with each other so that the cutting knives cut through the continuous web with their blades at the same time but at a predetermined spacing of 1 to 10 μm from each other. The blades of the cutting knives are also parallel to the axis of rotation of the cutting drum and are thus also oriented parallel to each other, so that the blades cut the continuous web over the entire width in line cutting.

[0012] The disadvantage of this solution is that here too the rotational movements of the cutting drums must be very precisely coordinated with one another so that the two blades cut the continuous web in a defined orientation relative to one another in order to achieve a clean cut. In addition to the above-described disadvantages of high cutting forces, limited cutting width, increased wear and reduced cutting quality, this arrangement also requires a very precise positioning of the cutting drum and the blades rotating thereon relative to the counter-drum in order not to fall below the required spacing, since otherwise the blades could collide. Furthermore, the spacing of the cutting circles of the blades of the cutting drum and the counter-drum must also not be greater than a predetermined spacing of 1 to 10 μm, since otherwise a clean cut cannot be achieved since the blades each form a support with one another that is necessary for cutting. Summary of the invention

[0013] Against this background, the object of the present invention is to provide a cutting device which allows neat and process-reliable cutting of segments for energy cells from the continuous web at a simultaneously high transport speed of the conveyed continuous web.

[0014] According to the basic concept of the invention, it is proposed that the blade of the cutting knife slides on the blade of the counter knife with point contact during the rotational movement of the cutting rotary mechanism, in particular the cutting drum, while cutting the continuous web, and the first drive mechanism is torque-controlled at least during the sliding of the blade of the cutting knife on the blade of the counter knife.

[0015] The torque applied by the first drive to the cutting rotary mechanism, in particular to the cutting drum, is responsible for the blade contact force applied by the cutting knife to the counter knife. Thus, by means of the proposed torque control for the first drive, the blade contact force can be adjusted during the cutting process according to a predetermined profile or a predetermined value. In this case, the blade contact force is derived directly from the drive torque of the first drive taking into account the laws of mechanics and can thus be calculated from this drive torque.

[0016] Here, the driving torque of the first drive mechanism is preferably controllable or adjustable or controllable or adjustable as a function of the position of the cutting knife relative to the counter knife, thereby, for example, taking into account the individual contours of the cutting edge of the cutting knife or the counter knife, for example, to achieve an optimized cutting process or also to compensate for wear-induced changes in the contour of the cutting edge. In addition, the position of the cutting knife relative to the counter knife is a clear criterion, according to which the cutting process can be distinguished from an intermediate position of the cutting knife and the counter knife, in which the cutting knife and the counter knife do not abut against each other. Here, the position of the cutting knife relative to the counter knife depends on the rotational angle position of the cutting rotary mechanism relative to the counter knife, which in turn depends on the rotational angle speed of the cutting rotary mechanism relative to the counter knife. In this case, the regulation or control of the driving torque of the first drive mechanism is used to change the rotational angle speed of the cutting rotary mechanism between cutting processes, thereby in turn controlling or adjusting the position and posture of the corresponding cutting knife relative to the counter knife of the subsequent cutting process. For this purpose, the rotational angle position of the cutting rotary mechanism can be detected by means of a rotational angle sensor, whereby the control can be extended to the regulation of the position of the cutting knife in order to comply with a predetermined position of the cutting knife relative to the counter knife.

[0017] In this case, it is further proposed that the attitude of the cutting knife is controlled or controllable by means of the first drive mechanism according to the attitude of a predetermined first contact point of the counter knife. The predetermined first contact point is calibrated separately before the cutting device is started and must be precisely touched on the corresponding counter knife during each cutting process in order to achieve a clean cut when the cutting device is running, by adjusting the attitude of the cutting knife so that the cutting knife reaches the predetermined first contact point with its blade at the beginning of the cutting process precisely in order to abut against the blade of the counter knife. For this purpose, an attitude adjustment is provided for the cutting knife or the entire cutting rotary mechanism, in particular the cutting drum, which attitude adjustment moves the cutting knife in the phase of the rotational movement before each cutting process into a predetermined orientation and / or rotation angle position so that the cutting knife abuts against the blade of the counter knife in a point-like manner at the predetermined first contact point. The adjustment or control of the drive torque of the cutting rotary mechanism corresponds in this phase to the attitude adjustment or control of the cutting rotary mechanism and the cutting knife by a change in the rotation angle.

[0018] It is further proposed that the drive torque of the first drive means is set or controlled or can be set or controlled in such a way that an overpressure of the cutting knife relative to the counter knife is not exceeded during cutting. The maximum value of the blade. On the one hand, the over-pressing of the blade is inevitable when the blade pressing force is applied to a certain extent and is even worth pursuing in order to ensure the permanent contact of the blade in order to achieve a neat cut. However, if the over-pressing is too high, it is the decisive reason for the damage of the blade and even the breakage of the cutting knife and the matching knife. Thus, by the proposed adjustment, on the one hand, a neat cut can be achieved, the method is: the blade of the cutting knife always contacts the corresponding blade of the matching knife with a specific over-pressing during the cutting process, and on the other hand, the possibility of damage to the blade can be reduced at the same time, the method is: the movement of the blade of the cutting knife is adjusted so that the over-pressing is limited to a maximum value. Here, on the one hand, the over-pressing can be detected by a sensor at the cutting knife, which generates a signal representing the deformation of the cutting knife. As an alternative, the over-pressing can also be detected indirectly from the effective drive torque of the first drive mechanism under the condition of taking into account the spring stiffness of the cutting knife, the matching knife and other components in the force transmission path.

[0019] It is also suggested that the driving torque of the first drive mechanism is adjusted according to a predetermined blade pressing force to be applied by the cutting knife to the counter knife. Here, the predetermined blade pressing force can preferably be constant and / or matched to the continuous web to be cut. Here, the predetermined blade pressing force can preferably be preset and selected as different levels according to the material properties of the segment to be cut. Here, the blade pressing force is generated from the driving torque of the first drive mechanism and can be directly ascertained by a corresponding pressure sensor, or can be indirectly ascertained from the driving torque of the first drive mechanism by calculating the blade pressing force from the driving torque. Here, the blade pressing force can be regulated or controlled in the following manner, namely: increasing or reducing the driving torque, wherein the rotation angle position of the cutting knife relative to the counter knife can be additionally changed.

[0020] The blade contact force can preferably be between 5 and 100 N. If, for example, separator blades are to be cut from a thin continuous web of a viscous separator material with a thickness of 10 to 20 μm, a blade contact force of 10 to 20 N is sufficient. If segments in the form of thicker anode blades or cathode blades are to be cut from the continuous web, a blade contact force of 20 to 40 N is sufficient. If four-layer single-chamber cells or preforms consisting of two separator blades with electrodes arranged therebetween, with a correspondingly high thickness and rigidity, are to be cut, a blade contact force of 30 to 100 N can be set.

[0021] In addition, it is proposed that at least two counter knives are provided and that the driving torque of the first drive mechanism is adjusted or controlled or can be adjusted or controlled in a counter knife-independent manner according to the position of the cutting knife relative to the counter knife that will subsequently abut with it in point-like contact and / or according to the predetermined first contact point of the counter knife that will subsequently abut with it. The counter knives are clamped individually in the counter drum and / or manufactured by a separate processing process so that the counter knives and their blades have separate different orientations, arrangements and / or shapes due to inevitable manufacturing technical inaccuracies. Such different orientations, arrangements and / or shapes can now be compensated to such an extent during the cutting process by adjusting the counter knife of the first drive mechanism individually that their influence on the quality of the cutting process is reduced. In addition, the driving torque of the first drive mechanism and the posture of the cutting knife are controlled or adjusted in a counter knife-independent manner so that the cutting knife always abuts precisely at the first contact point of the corresponding counter knife that was previously determined individually by the counter knife at the beginning of the cutting process.

[0022] It is further proposed that a storage device with data items is provided, which represent the individualized variation of the drive torque with respect to the cutting movement of one or more cutting knives relative to one or more counter knives and / or the position of the first contact point of the counter knife, and the drive torque of the first drive device is adjusted or can be adjusted according to the data items. The data items can be compiled, for example, in a calibration method for the counter knife for all counter knives of the counter drum individually, wherein in this calibration process not only the first contact point but also the optimized variation of the drive torque of the first drive device for each blade is determined and stored, which variation curves can depend on the geometry and orientation of the blade of the counter knife, for example. This data item with the individualized drive torque and first contact point for the counter knife is then used to control and / or regulate the first drive device during the operation of the cutting device.

[0023] In addition, it is suggested that an alarm mechanism is provided, which sends or displays an alarm signal according to the situation of exceeding the predetermined tolerance of the orientation of one or more cutting knives relative to one or more matching knives and / or when the orientation of the matching knife is wrong and / or when exceeding the predetermined tolerance of the shape of one or more cutting knives or one or more matching knives. Such wrong orientation of the cutting knife and / or matching knife can for example cause the collision of the cutting knife and the matching knife and thus cause the fracture of one of the two knives. In addition, the blade damage caused by wear and the shape change caused thereby can cause the cutting variation for the segmentation, and this cutting no longer meets the predetermined quality requirements. The operating personnel is made to perceive these two states through the alarm signal so that the operating personnel can check the cutting device. For this reason, the cutting device can be stopped in a short time, wherein the operating personnel can then also replace the cutting knife and the matching knife individually or as a whole or redirect them.

[0024] It is further suggested that a swing mechanism or a moving mechanism is provided, with which the cutting drum can be deflected or moved from the cutting position into an inactive position separated from one or more mating knives. In the inactive position, the blade of the cutting knife no longer contacts the blade of the mating knife, whereby the cutting process is actually interrupted. This inactive position of the cutting drum can be used, for example, to check the functionality of the cutting drum and / or the mating drum, without the cutting process being performed and / or the blades not being in contact with each other. In addition, the swing mechanism or the moving mechanism can also be activated by the operator after the alarm mechanism is activated or can also be automatically activated, thereby interrupting the cutting process of the cutting device and being able to implement maintenance and / or inspection measures.

[0025] It is further proposed that a counter-rotating body, in particular a counter-rolling drum, is provided and that the counter-knife or counter-knives are formed by one or more cutting edges arranged on the counter-rotating body, in particular on the counter-rolling drum. The cutting edges can be inserted into the circumference of the counter-rolling drum or can also be arranged on separate inserts which are inserted into corresponding receptacles of the counter-rolling drum.

[0026] It is further proposed that a second drive is provided, which drives a counter-rotating body, in particular a counter-roller, for a rotational movement about a rotational axis, wherein the rotational axis of the counter-rotating body, in particular the counter-roller, is oriented parallel to the rotational axis of the cutting rotary mechanism, in particular the cutting rotary mechanism, and the rotational direction of the rotational movement orients the counter-rotating body, in particular the counter-roller, in the opposite direction to the rotational direction of the cutting rotary mechanism, in particular the cutting rotary mechanism. By means of the counter-rotating body provided and driven for rotational movement, in particular the counter-roller with one or more counter-knives arranged thereon, the cutting device can be integrated into a drum row with a high cutting frequency and production capacity for the segments. In addition, the conveyed continuous web can be transported in the drum row, cut directly and, after cutting in the drum row, further transported and processed.

[0027] It is further proposed that the first and / or second drive of the cutting rotary mechanism, in particular the cutting drum and / or the counter-rotating body, in particular the counter-rotating body, is formed by a servomotor. A servomotor has the advantage that it can be adjusted very precisely and quickly, wherein the adjustments of the drive mechanism can be coupled to one another very easily in a corresponding control program. In this case, the servomotor is controlled by controlling the effective current and thus changes the drive torque applied to the cutting rotary mechanism and / or the counter-rotating body in order to achieve the described control and regulation.

[0028] It is further suggested that the moment of inertia of the cutting rotary mechanism, in particular the cutting drum, is preferably at least 100 times smaller than the moment of inertia of the mating rotary body, in particular the mating drum. The mating rotary body, in particular the mating drum, is used to transport the continuous web until the cutting segment and to transport the segment after cutting from the continuous web. In order to achieve high production capacity, the mating drum is measured with a relatively large outer diameter and driven at a constant speed. The cutting rotary mechanism, in particular the cutting drum, is a carrier of one or more cutting knives and is only used for cutting segments. The cutting rotary mechanism has a much smaller diameter than the mating drum and is driven at a significantly higher speed than the mating rotary body. In order to enable one or more cutting knives arranged on the cutting drum to move as quickly and accurately as possible to the predetermined position described above of the first contact point and in the orientation relative to one or more mating knives with a predetermined over-pressing and when a predetermined blade pressing force is applied to the mating knife, the cutting drum has a correspondingly smaller moment of inertia. In addition, the necessary driving torque of the cutting drum and the blade pressing force applied thereby can be adjusted and controlled extremely finely.

[0029] Furthermore, a method for controlling a cutting device according to any one of claims 11 to 14 is proposed, in which data items of a variation of a first drive torque as a function of the rotation angle of a counter-rotating body, in particular a counter-drum, and / or data items of one or more first contact points of one or more counter-blades are generated in a calibration method, and the first drive is adjusted as a function of the data items ascertained in the calibration method. In the proposed method, the cutting device is calibrated in a calibration method before starting operation, by ascertaining the required variation of the drive torque of the first drive of the cutting rotary device, in particular the cutting drum, for a predetermined pressure between the blades, i.e. for a determined blade contact force, and generating data items from these data. Alternatively or additionally, the first contact point optimized for optimal cutting is ascertained or, for a plurality of counter-blades, the first contact point is ascertained in a counter-blade-independent manner, and data items are generated from these data. During operation of the cutting device, the first drive is then regulated and / or controlled as a function of these data, thereby enabling a segmented, counter-blade-independent optimized cutting process to be achieved.

[0030] In this case, different sub-data items can be set in the data item, which define torques and / or torque curves and / or define different orientations and arrangements of one or more cutting knives for different predetermined pressures to be applied by one or more cutting knives to one or more counter knives and / or define different predetermined contact points of counter knives. Through the set sub-data items, the operator can select different cutting forces to be achieved, such as 20N or 50N, and then adjust the first drive mechanism according to the torque set for this in the sub-data item to achieve the cutting force. In addition, the orientation and position of one or more cutting knives can be controlled by corresponding adjustment of the first drive mechanism so that the one or more cutting knives always abut against the corresponding counter knives at the beginning of the cutting process with a predetermined contact point. Here, the orientation and position of the cutting knife relative to the counter knife are changed by adjusting the attitude of the cutting knife or controlling the movement of the cutting knife, wherein the attitude adjustment or control is achieved by adjusting or controlling the rotation speed and relative rotation angle of the rotational movement of the cutting rotary mechanism relative to the counter rotating body.

[0031] The proposed method is further improved in that the cutting device is designed according to claim 11 and the swivel mechanism and / or the displacement mechanism is controlled based on signals of optical sensors or pressure sensors assigned to one or more cutting knives and / or one or more counter knives and / or when a predetermined reaction force between the cutting knife and the counter knife is exceeded or semi-automatically by triggering a control signal by an operator. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be explained below with reference to the accompanying drawings according to preferred embodiments.

[0033] Figure 1 A cutting device according to the invention is shown, which has a cutting rotary mechanism in the form of a cutting drum and a counter-rotating body in the form of a counter-drum; and

[0034] Figure 2 shows an enlarged cut-out of a cutting device having a cutting knife and a counter knife; and

[0035] Figure 3 The cutting drum and the counter drum are shown in an enlarged view with over-pressed blades; and

[0036] Figure 4 The rotation angle about the mating roller shows over-pressing of the blade; and

[0037] Figure 5 A cutting drum is shown together with a counter-drum and a resiliently supported cutting knife; and

[0038] Figure 6The mating drum and the cutting drum are shown in perspective view; and

[0039] Figure 7 The paired drum and the cutting drum at the frame together with the oscillating mechanism of the cutting drum are shown in a perspective view;

[0040] Figure 8 An enlarged view of the cutting blade of the cutting drum together with the mating blade of the mating drum along the circumferential direction is shown; and

[0041] Fig. 9 An enlarged view of the cutting blade of the cutting drum together with the counter blade of the counter drum is shown perpendicular to the circumferential direction. DETAILED DESCRIPTION

[0042] exist Figure 1 and 2 , a cutting device according to the invention can be seen, which has a cutting rotary mechanism in the form of a cutting drum 1 driven counterclockwise in the direction of the arrow and a counterrotating body in the form of a counter drum 2 driven clockwise in the direction of the arrow. The cutting drum 1 and the counter drum 2 are arranged so that there is a gap 6 between the circumference 12 of the cutting drum 1 and the circumference 14 of the counter drum 2, into which gap a continuous web 5 of material to be cut is fed. The continuous web 5 can be formed by a web with cathode or anode material or with an insulating material for energy cells, as described at the beginning of the description. In addition, the continuous web 5 can also be formed by a multilayer composite web consisting of an insulating material and segments laid thereon, the segments being made of anode material or cathode material, wherein the segments of anode material or cathode material can be cut out of the continuous web in a preceding step by the same cutting device.

[0043] The continuous web 5 abuts against the abutment surface 19 formed by the circumferential surface 14 of the counter roller 2 and is conveyed into the gap 6 by the rotational movement of the counter roller 2. Here, the continuous web 5 can be held on the counter roller 2 only by web tension or, as a supplement or alternative, also by negative pressure.

[0044] A cutting knife 3 with a cutting edge 9 is arranged on the cutting drum 1 and protrudes radially beyond a boundary surface or circumferential surface 12, wherein a recess 13 is provided in the circumferential surface 12 of the cutting drum 1 upstream of the cutting knife 3 with respect to the direction of rotation, in order to form a free space on one side on the cutting knife 3. Due to its radially protruding arrangement, the cutting knife 3 has a free cutting edge 9 on its side arranged upstream, the distance of which from the base body of the cutting drum 1 is also enlarged by the recess 13.

[0045] A mating knife 4 is provided on the mating roller 2, which is arranged so that its radial outer surface is arranged on the same or almost the same radius as the circumferential surface 14 or the abutment surface 19. The mating knife 4 thus forms a continuous, smooth outer surface with the circumferential surface 14 and the abutment surface 19, against which the continuous web 5 abuts radially on the outside. In addition, a recess 10 is provided in the abutment surface 19 downstream of the mating knife 4 with respect to the rotation direction of the mating roller 2, so that the mating knife 4 has a free blade 8 on its side arranged downstream. The mating knife 4 can be formed as a separate component independent of the mating roller 2, so that it can be replaced after wear or breakage. However, the mating knife 4 can also be formed integrally with the mating roller 2, by forming the mating roller 2 as a blade 8 on its circumferential surface 14. Here, the blade 8 can also be part of an insert of the mating roller 2, which already has a recess 10 and can then realize an additional function. In other words, the mating knife 4 can also have an additional shape for realizing an additional function in addition to the construction of the blade 8.

[0046] Cutting drum 1 and / or counter drum 2 are understood to mean all bodies which are driven in a rotational motion and to which corresponding cutting knives 3 and counter knives 4 are fastened in the circumferential direction in order to exert corresponding blade contact forces during the shearing motion of the continuous web 5 .

[0047] In the described embodiment, one cutting knife 3 and one counter knife 4 are shown on the cutting drum 1 and on the counter drum 2, respectively, but this does not exclude that a plurality of cutting knives 3 and counter knives 4 are also provided on the cutting drum 1 and on the counter drum 2, distributed over the circumference. On the contrary, it may even be sensible to provide a plurality of cutting knives 3 and counter knives 4 evenly distributed over the circumference of the cutting drum 1 and the counter drum 2, if this allows a more favorable cutting ratio to be achieved for cutting segments 7 of a predetermined length or if the cutting frequency is to be increased at the same rotational speed. If, for example, segments 7 of a length of 100 mm are to be cut, the counter knives 4 are arranged in such a way that they divide the circumferential surface 14 of the counter drum 2 into circumferential segments having a circular arc length of 100 mm in each case. The number of counter knives 4 is coordinated with the transport speed of the conveyed continuous web 5 and the rotational speed of the counter drum 2.

[0048] The cutting drum 1 and the counter drum 2 are driven to perform a rotational movement directed in opposite directions, so that when passing through the gap 6, they execute a movement with their circumferential surfaces 12 and 14 in the same direction, which movement corresponds to the conveying direction of the conveyed continuous web 5 on the counter drum 2. In this case, the cutting drum 1 and the counter drum 2 are each driven for a rotational movement at different peripheral speeds, so that the cutting blade 3 and the counter drum 4 execute a relative movement relative to each other when passing through the gap 6. This is preferably achieved in that the cutting drum 1 and the counter drum 2 are driven at the same or different rotation speeds and the cutting circles of the rotating blades 8 and 9 have different diameters. In this case, the cutting drum 1 with the blade 9 of the cutting blade 3 has a larger cutting diameter than the blade 8 of the counter drum 4 of the counter drum 2, so that the peripheral speed of the blade 9 of the cutting blade 3 is greater than the peripheral speed of the blade 8 of the counter drum 4. Due to the same or different rotation speeds and the different diameters of the cutting circles, the blades 8 and 9 meet each other once per revolution in a correspondingly synchronized movement and thereby execute a cutting movement of the continuous web 5 described in more detail below. Furthermore, however, the cutting drum 1 can also have a significantly smaller diameter and one or more cutting knives can have a significantly smaller cutting circle diameter than the counter drum 2 and the counter knives 4. In this case, a plurality of counter knives 4 are provided on the counter drum 2 and the cutting drum 1 is driven at a significantly higher rotational speed than the counter drum 2.

[0049] The cutting knife 3 is arranged on the cutting drum 1 in such a way that the blade 8 of the counter knife 4 abuts against the blade 9 of the cutting knife 3 when passing through the gap 6 with a point contact S. For this purpose, the blade 9 of the cutting knife 3 of the cutting drum 1 is oriented at a first angle α not equal to zero degrees, preferably at an angle α of 0 to 20 degrees, relative to the blade 8 of the counter knife 4 in a cutting plane I extending through the point contact S tangentially to the movement of the blade 8, as can also be done in Figure 2 and Fig. 9 Since the blades 8 and 9 are at least slightly bent due to the elastic properties of the cutting blade 3 and / or the counter blade 4, the blades 8 and 9 do not abut against each other in a mathematical point contact S. In other words, the point contact S is slightly extended by the flexibility of the blades 8 and 9.

[0050] Furthermore, the blade 9 of the cutting knife 3 is oriented relative to the blade 8 of the counter knife 4 so that it extends at a second angle β not equal to zero in a cutting plane II which passes through the point contact S and extends perpendicularly to the movement of the blade 8, i.e. perpendicularly to the cutting plane I, as can also be seen in FIG. Figure 2 and Figure 8 As seen in.

[0051] The blade 8 of the counter knife 8 is oriented parallel to the rotation axis of the counter cylinder 4 and perpendicularly to the longitudinal direction of the endless web 5 held on the counter cylinder 4 and thus also perpendicularly to the circumferential movement of the circumference 14 of the counter cylinder 4 and the transport movement of the endless web 5 .

[0052] Due to the described oblique position of the blade 9 of the cutting knife 3 relative to the blade 8 of the counter knife 4, the cutting knife 3 with its blade 9 comes into contact with the blade 8 of the counter knife 4 at a point and cuts the continuous web 5 coming into contact therewith. Since the blade 8 of the counter knife 4 of the counter cylinder 2 moves at a lower peripheral speed than the blade 9 of the cutting knife 3 of the cutting cylinder 1, the point contact S of the blade 9 of the cutting knife 3 on the blade 8 of the counter knife 4 slides along the longitudinal direction of the blade 8 of the counter knife 4 and cuts the continuous web 8 in a cutting line corresponding to the geometry of the blade 8 of the counter knife 4. The counter knife 4 of the counter cylinder 2 is oriented perpendicularly to the longitudinal direction of the continuous web 5, so that by cutting, a segment 7 with a perpendicular cutting edge is cut off from the continuous web 5. Here, the cutting is carried out according to the shearing principle with a continuous cut extending transversely to the longitudinal direction of the continuous web 5, whereby a very neat and precisely shaped cutting edge of the segment 7 can be achieved.

[0053] The inclined position of the blade 9 relative to the blade 8 in the cutting plane I in combination with the relative movement of the blades 8 and 9 relative to one another, which is achieved by the different circumferential speeds, causes the blade 9 of the cutting knife 3 to slide laterally on the blade 8 of the counter-knife 4 with a point-shaped contact S. The inclined position of the blade 9 in the cutting plane II also makes it possible to achieve this sliding movement while compensating for the reduction and / or increase in the distance of the blade 8 relative to the cutting drum 1 caused by the circumferential movement of the blade 8 of the counter-knife 4. In this case, the recess 10 arranged downstream of the counter-knife 4 enables the cutting blade 3 of the cutting drum 1 to penetrate radially inwards through an imaginary extension of the circumferential surface 14 of the counter-knife 2 during the cutting movement downstream of the counter-knife 4. This results in a vertical cut through the continuous web 5. The arc of the cutting movement corresponds to the rotation angle of the counter-knife 2 starting from the first cutting contact point of the continuous web 5 up to the rotation angle of the counter-knife 2 for the complete cutting of the continuous web 5. By the immersion of the cut end of the segment 7 into the recess 10, the cutting edge of the cut segment 7 and the cutting edge of the end of the continuous web 5 still resting on the counter knife 2 are spatially separated from each other, so that the cut surface can be cleaned more specifically by suction. In addition, the cutting dust adhering to the counter knife 4 will not be scraped off on the material edge of the segment 7, and the knife cleaning of the cutting knife 3 and the counter knife 4 can be carried out at the maximum distance, preferably in the position of the counter drum 2 and the cutting drum 3 rotated by 180 degrees, without soiling the continuous web 5.

[0054] Since the two blades 8 and 9 bear against each other during the cutting movement in point contact S, a portion of the continuous web 5 remains connected until the complete cut is made across the cutting line. Furthermore, after the cut, the continuous web 5 bears with its free end against the outer side of the counter knife 4, which smoothly merges into the circumference 14 of the counter cylinder 2. This free end of the continuous web 5 then forms the second end of the segment 7 that is subsequently cut.

[0055] Here, the cutting of the segments 7 is carried out with the blade 8 of the counter knife 4 pointing perpendicularly to the continuous web 5 and parallel to the axis of rotation of the counter cylinder 2, which is advantageous in this respect, because firstly a perpendicular cut through the continuous web 5 can be achieved thereby, and secondly the continuous web 5 resting on the circumferential surface 14 itself does not twist about its longitudinal axis during the cutting process. However, it is also conceivable that the blade 8 of the counter knife 4 is arranged at an angle to the axis of rotation of the counter cylinder 2 relative to a plane tangential to or perpendicular to the circumferential surface 14, if the cutting requires this or the cutting is further improved thereby.

[0056] exist Fig. 9 The geometry of the cutting edges 8 and 9 can be seen in the section along the cutting plane I in the viewing direction from above. The cutting edges 8 and 9 are oriented at a first angle α of approximately 2 to 5 degrees relative to one another and thus bear against one another in a point contact S during the subsequent pivoting movement. Figure 8 The second angle β can be seen in FIG. , which is also about 2 to 5 degrees here. The cutting edges 8 and 9 are thus firstly on one side with Figure 2 During the further rotational movement of the cutting drum 1 and the counter drum 4, the blade 9 of the cutting knife 3 slides on the blade 8 of the counter knife 4 and performs a cutting movement of the continuous web 5, wherein the distance between the blades 8 and 9 that changes here is compensated by the second angle β.

[0057] The rotational movements of the cutting drum 1 and the counter drum 2 are coordinated with each other in such a way that the two blades 8 and 9 come into contact with each other with point contact S during the rotation according to the above-mentioned path and cut the continuous web 5. The cutting process necessarily requires contact, because otherwise the shearing movement could be interrupted or not be carried out neatly, which could result in a poor cutting quality of the segment 7. In order not to lose this contact, the movement of the cutting drum 1 and the counter drum 2 together with the orientation and arrangement of the blades 8 and 9 are designed so that the cutting knife 3 is pressed down with excessive pressure. Abut against the blade 8 of the counter knife 4, as can be seen in Figure 3 As can be seen in FIG. The cutting knife 3 thus applies the blade pressing force to the counter knife 4 and vice versa. Of course, excessive pressure Will not cause the counter knife 4 to be squeezed into the cutting edge 9 of the cutting knife 3 with its cutting edge 8, as Figure 3 This illustration should only be used to indicate over-compression. In other words, the cutting blade 3 and / or the counter blade 4 can be easily pushed away by utilizing their elastic properties, whereby the point contact S is also slightly extended. Figure 4 For a continuous format with a cutting width of 100 mm, it can be seen that the over-pressing The variation curve within the range of the rotation angle ε of the counter roller 4. In addition, it can be seen that the over-pressing Relation to the cutting width of the continuous web 5. In the diagram, the rotation angle ε = 0 degrees corresponds to the start of the cutting movement. At the start of the cutting movement, the overpressure In a convex curve, it rises to a maximum value and then drops steeply again.

[0058] Excessive compression This causes elastic movement of the cutting blade 3 and the counter blade 4 and in extreme cases may lead to blade breakage or damage to one of the blades 8 or 9 if the plastic deformation limit is exceeded locally. In order to counteract this effect, the blades 8 and 9 or only one of the blades 8 or 9 can be slightly concave, i.e. bent inwards, wherein the concave shape ideally corresponds to the measured convex overpressure. Negative shape. Through this concave shape of the blade 8 or 9, it is possible to reduce excessive pressing The maximum value of the force and, ideally, equalizes it without losing contact between the cutting edges 8 and 9 during the cutting process. As a result, the forces acting on the cutting edges 8 and 9 can be reduced and the likelihood of damage to the cutting knife 3 and the counter knife 4 can thereby be reduced. In addition, it is also possible to avoid a breakage of the cutting knife 3 and the counter knife 4 or their cutting edges 8 and 9 by using elastic materials for the cutting knife 3 and the counter knife 4, so that they can bend at least slightly.

[0059] exist Figure 5, an embodiment of the invention can be seen in which a recess 10 is arranged on the counter knife 4 upstream of the rotational movement of the counter drum 2, so that the free cutting edge 8 of the counter knife 4 is arranged on the upstream side of the counter knife 4. The cutting knife 3 of the cutting drum 1 is arranged here in such a way that its free cutting edge 9 is arranged downstream in the rotational direction of the cutting drum 1. The cutting process is carried out here in that the cutting drum 1 with the cutting knife 3 and the cutting edge 9 arranged on the cutting knife is driven at a higher peripheral speed than the counter knife 4 of the counter drum 2, so that the cutting knife 3 with its cutting edge 9 slides on the cutting edge 8 of the corresponding counter knife 4 and cuts the continuous web 5 according to the principle described above. In addition, the cutting knife 3 of the cutting drum 1 is elastically supported by a spring 15, so that the cutting force acting between the cutting edges 8 and 9 is reduced by the fact that the cutting knife 3 can perform a deflection movement. As a result, a more rigid cutting knife 3 can be used without increasing the possibility of damage in the form of knife breakage. By elastically supporting the cutting blade 3, the above-described excessive pressure on the cutting edges 8 and 9 can be reduced. Without losing their contact. Rather, further design parameters are provided by the provided elastic force of the spring 15 and its arrangement in order to influence the cutting process. If the cutting drum 3 and the counter drum 4 are driven independently of one another by different drive devices, it is also possible to control the drive movement of the cutting drum 3 and the counter drum 4 as a function of the cutting force acting. In this way, it is possible to prevent a predetermined blade contact force from being exceeded and possible blade breakage caused thereby. The different circumferential speeds of the blades 8 and 9 are realized here with the same rotational speed and different cutting circle diameters of the blades 8 and 9. If the cutting drum 1 and the counter drum 2 are driven by different drive mechanisms, i.e. by a single drive device, it is also conceivable to control the rotational speeds of the cutting drum 1 and the counter drum 2 differently and individually and thereby additionally control or cause the relative speed of the blades 8 and 9 during the cutting process. In particular, it is thus possible to control excessive pressure of the blades 8 and 9 in this way. The load on the cutting edges 8 and 9 is thereby reduced and possible cutting breakage is avoided.

[0060] exist Figure 6 1 and 2. The cutting drum 1 with the first drive mechanism 100 and the counter drum 2 with the second drive mechanism 200 can be seen, which are connected to the control and storage device 400 by means of control wires. The first and second drive mechanisms 100 and 200 are respectively configured as servomotors that can be easily controlled and drive the cutting drum 1 and the counter drum 2 to perform the cutting operation in the process. Figure 1 and 2. The cutting drum 1 has a significantly smaller diameter than the counter drum 2 and is a carrier for three radially outwardly projecting cutting knives 3. The counter drum 2, on the other hand, has a significantly larger diameter and is a carrier for a plurality of counter knives 4 which, in the unfolded view of the arc length, have a spacing from one another which corresponds to the length of the segment to be cut. In addition, the cutting drum 1 has a moment of inertia about its axis of rotation which is 100 times smaller than that of the counter drum 2.

[0061] The cutting drum 1 is driven by the first drive 100 about its rotation axis at a significantly higher speed than the counter drum 2 driven by the second drive 200. The speed of the cutting drum 1 is selected here taking into account the diameter of the cutting drum and the number of cutting knives 3 so that when passing through a defined cutting position, a respective cutting knife 3 slides over the counter knife 4 of the counter drum 2 and cuts the continuous web 5 in this process.

[0062] The first drive 100 of the cutting drum 1 is torque-controlled, that is, the drive torque applied by the first drive 100 to the cutting drum 1 is adjustable. As a result, the blade contact force applied by the cutting knife 3 to the counter-knife 4 and the continuous web 5 arranged therebetween during the cutting process can be adjusted to a predetermined value. In addition, the cutting drum 1 can be deliberately accelerated or also decelerated during the rotational movement between the cutting processes, so that the cutting knife 3 abuts against the respective counter-knife 4 at a predetermined contact point at the beginning of the cutting process. For this purpose, the drive torque of the first drive 100 can preferably be controlled or adjusted as a function of the position or attitude of the cutting knife 3 relative to the counter-knife 4 that subsequently makes contact. As a result, the drive torque of the first drive 100 that drives the cutting drum 1 is actually controlled as a function of the rotation angle of the counter-knife 4 due to the fixed arrangement of the counter-knife 4 on the counter-drum 2 or is adjusted taking into account the signal of a rotation angle sensor associated with the cutting drum 1. Here, the control or regulation of the rotational movement of the cutting drum 1 is carried out in such a way that the cutting knife 4 arranged thereon is arranged in a predetermined rotational angle position and orientation relative to the counter knife 4 at least during the first contact point and the subsequent cutting movement. Thus, the control or regulation of the first drive mechanism 100 can also be regarded as a posture adjustment of the cutting knife 3 according to a predetermined positional course. Here, while the blades 8 and 9 are in contact with each other, the drive torque of the first drive mechanism 100 is adjusted in such a way that the blade contact force corresponds to a predetermined value. For this purpose, the blade 9 of the cutting drum 3 exerts a predetermined pressure on the blade 8 of the counter knife.

[0063] In addition, the driving torque of the first driving mechanism 100 can be adjusted so that the over-pressing The maximum value is not exceeded, thereby enabling neat cutting of the continuous web 5, resulting in a reduction in the possibility of damage to the cutting blade 3 and the counter blade 4. Here, the driving torque of the first driving mechanism 100 can be further adjusted so that excessive pressure is not applied. Nor does it fall below a minimum value, so that the cutting knife 3 does not lose contact with the counter knife 4 during the cutting process of the continuous web 5. It is not necessary to measure the overpressure here. Overpressure can also be detected from the drive torque of the first drive 100 taking into account the spring stiffness of the cutting blade 3, the counter blade 4 and the components involved in the force transmission path.

[0064] The rotation speed of the counter roller 2 is preferably constant, while in the first contact point and during the sliding movement the blade contact force, the overpressure The adjustment of the position of the cutting blade 3 relative to the counter blade 4 is preferably carried out only by adjusting and / or controlling the drive torque of the first drive 100. This is advantageous in this respect because the cutting drum 1 has a significantly smaller, preferably at least 100 times smaller, moment of inertia around its rotation axis than the counter drum 2 with a significantly larger outer diameter and moment of inertia and can therefore be adjusted more simply, more quickly and more accurately with regard to the rotational movement and orientation of its cutting blade 3. However, if this is necessary, the second drive 200 can also adjust the rotational speed and / or the drive torque of the counter drum 2, so that other adjustment variables are available for more detailed adjustment.

[0065] For calibrating the cutting device, the cutting drum 1 is rotated in such a way that the cutting drum with its cutting blade 3 bears against the first contact point of the counter blade 4 from below. Here, for this first contact point, the arrangement and / or orientation of the cutting blade 3 relative to the counter blade 4 and / or the orientation, arrangement and / or rotation angle of the cutting drum 1 relative to the counter blade 2 are precisely recorded in a data item together with the drive torque to be applied and stored in the memory device 400. This process is repeated for at least the last contact point of the same counter blade 4, at which the cutting blade 3 of the cutting drum loses contact with the counter blade 4. Thus, during the cutting process, i.e. at the first and last contact, the rotation angle of the cutting drum 3 and the drive torque to be applied by the first drive device 100 for the corresponding blade contact force for each of the counter blades 4 are recorded in at least two rotation angle positions. However, it is also conceivable to adjust the cutting process with increased accuracy by recording the rotation angle of the cutting drum 1 and the drive torque for the blade contact force for other contact points located therebetween.

[0066] This process is repeated by causing the cutting drum 1 and the counter drum 2 to continue rotating just as in the following operation until the same cutting knife 3 or the following cutting knife 3 comes into contact with the following counter knife 4 for the first time.

[0067] In this way, the first contact point and the drive torque of the first drive 100 for the corresponding blade contact force to be achieved are measured individually for each of the counter knives 4. From this, a data item is compiled for the predetermined blade contact force: at what rotation angle the cutting drum 1 must be oriented relative to the counter drum 2 in a counter-knife-individual manner for each cutting process, so that the cutting knife 3 of the cutting drum 1 abuts at the predetermined first contact point of the corresponding counter knife 4 at the beginning of the cutting process. The data item can also include data on how the drive torque of the first drive 100 and thus the rotation angle of the cutting drum 1 and the position of the cutting knife 3 must be adjusted and controlled during the cutting process, so that the cutting knife 3 abuts against the corresponding counter knife 4 with the desired blade contact force. The data here include in particular the rotational angle positions of the cutting drum 3 and the counter drum 4 and a change in the relative rotational angle for each of the counter knives 4, wherein the change in the relative rotational angle can be achieved in the following manner: the cutting knife 3 of the cutting drum 1 is deliberately slightly slowed down or accelerated in its rotational movement by adjusting the drive torque of the first drive mechanism 100 and / or rests on the counter knife 4 of the counter drum 2 with a higher or lower blade contact force.

[0068] Since the number of cutting knives 3 is significantly smaller than the number of counter knives 4 , the cutting knives perform multiple cutting operations on different counter knives 4 during one rotation of the counter drum 2 , wherein the arrangement and / or orientation of the cutting knives is adjusted individually for each counter knife 4 during each cutting operation by adjusting the torque of the first drive 100 .

[0069] The drive torque of the first drive 100 can be adjusted in such a way that the blade contact pressure and the overpressure calculated back taking into account the mechanical laws do not exceed a maximum value and the overpressure does not fall below a minimum value.

[0070] To operate the cutting device, the swivel mechanism 500 is first activated and the cutting drum 3 is brought with its cutting knife 3 close to the counter knife 4 so that the blade 9 of the cutting knife 3 is arranged on a defined cutting circle in the cutting position. The operator then sets a predetermined target value for the blade contact force on a corresponding input mechanism. The corresponding sub-data item is then called from the storage mechanism 400 and the cutting device is regulated and controlled according to this sub-data item after initialization.

[0071] After the cutting drum 1 has been pivoted into the cutting position, the first drive 100 and thus the rotational movement of the cutting drum 1 are controlled in such a way according to the retrieved data item that the first cutting knife 3 comes into contact with the next mating cutting knife 4 at a defined first contact point, wherein the mating knife 4 of the mating drum 2 is identified based on the rotational angle position of the mating drum 2 and the first contact point of the mating cutting knife 4 assigned thereto is retrieved in advance. After the first approach of the cutting knife 3 to the mating knife 4, the drive torque of the first drive 100 is adjusted in such a way that a predetermined blade contact force is maintained while taking into account predetermined tolerances. Since the drive torque of the first drive 100 and the blade contact force are directly related except for negligible bearing friction, the blade contact force can be adjusted directly by changing the drive torque of the first drive 100, without requiring an additional pressure sensor for this purpose.

[0072] Here, the position and / or positional progression of the cutting blade 3 relative to the individual counter blade 4 is the setpoint variable to be achieved in the control loop, and the drive torque of the first drive mechanism 100 is the controlled variable in the control loop. If the first drive mechanism 100 is implemented in the form of a servomotor, the drive torque of the first drive mechanism 100 can be achieved, for example, by current intensity control.

[0073] In addition, the arrangement and / or orientation of the cutting blade 3 and / or the cutting drum 1 can also be additionally adjusted according to the signals of the pressure sensor and / or the optical sensor or the rotation angle sensor assigned to the counter blade 4 and / or the cutting blade 3, so that the wear and geometric changes of the cutting blade 3 and / or the counter blade 4 can be additionally taken into account. In addition, extreme situations in which the cutting device needs to be cut off can be identified thereby. For this purpose, an acoustic, optical or tactile signal that can be perceived by the operator can be generated, so that the operator can deactivate the cutting device before serious damage occurs. If a fault is detected in the upper-level mechanism of the device and the current is interrupted as a whole, such a cut-off or deactivation of the cutting device can also be performed.

[0074] Here, the cutting device can be deactivated very easily in a very short time interval for this purpose by activating a swivel mechanism 500 with a corresponding swivel mechanism, for example in the form of two pneumatic cylinders, and the cutting drum 1 is deflected from the counter drum 4 in an impact manner and independently of its rotation angle position into an inactive position, so that the cutting knife 3 no longer contacts the counter drum 4 or the contact is cancelled. This can actively prevent a collision between the cutting knife 3 and the counter knife 4. The same activation of the swivel mechanism 500 can also be carried out in order to maintain the cutting device and the upper-level equipment. In addition, if the cutting process of the continuous web 5 should be interrupted for other reasons, the cutting drum 1 can also be deflected away from the counter drum 2. Here, the deactivation of the cutting device can be preferably carried out automatically by deflecting the cutting drum 1 into the inactive position.

Claims

1. A cutting device for cutting segments (7) for energy cells from a continuous web (5), the continuous web being fed into a gap (6) in a cutting plane (I), the cutting device comprising: - a cutting rotary mechanism arranged on one side of the gap (6) and driven by means of a first drive mechanism (100) for rotational movement about a rotation axis, the cutting rotary mechanism having at least one cutting blade (3) projecting radially outwards from a boundary surface of the cutting rotary mechanism, in particular a cutting drum (1), the cutting drum having at least one cutting blade (3) projecting radially outwards from a circumferential surface of the cutting drum (2), and - at least one counter blade (4) arranged on the other side of the gap (6), wherein - the cutting knife (3) and the counter knife (4) each have a cutting edge (8, 9), It is characterized in that - the blade (9) of the cutting knife (3) slides over the blade (8) of the counter knife (4) in point contact (S) during the rotary movement of the cutting rotary mechanism, in particular the cutting drum (1), during the cutting of the continuous web (5), and The first drive mechanism (100) is torque-regulated at least during the period when the blade (9) of the cutting knife (3) slides on the blade (8) of the counter knife (4).

2. The cutting device according to claim 1, characterized in that: - the drive torque of the first drive mechanism (100) is adjusted or controlled or can be adjusted or controlled as a function of the position of the cutting knife (3) relative to the counter knife (4).

3. The cutting device according to claim 2, characterized in that: The position of the cutting knife (3) is controlled or regulated or can be regulated or controlled by means of the first drive (100) as a function of the position of a predetermined first contact point of the counter knife (4).

4. The cutting device according to any one of claims 1 to 3, characterized in that The drive torque of the first drive mechanism (100) is adjusted or can be adjusted in such a way that during cutting, no over-pressing of the cutting knife (3) relative to the counter knife (4) is exceeded. The maximum value of .

5. The cutting device according to any one of claims 1 to 3, characterized in that - The drive torque of the first drive mechanism (100) is adjusted according to a predetermined blade contact force to be applied by the cutting knife (3) to the counter knife (4).

6. The cutting device according to claim 5, characterized in that The blade contact force is between 5 and 100 N.

7. The cutting device according to any one of claims 1 to 6, characterized in that - at least two matching knives (4) are provided, and - adjusting or controlling or being able to adjust or control the driving torque of the first drive mechanism (100) in a counter-knife-only manner according to the position of the cutting knife (3) relative to the counter-knife (4) which subsequently abuts against the cutting knife in point contact (S) and / or adjusting or controlling or being able to adjust or control the driving torque of the first drive mechanism according to the posture of a predetermined first contact point of the counter-knife (4) which subsequently abuts against the cutting knife.

8. The cutting device according to claim 7, characterized in that - a storage device (400) is provided with data items representing the individual variation curve of the drive torque with respect to the cutting movement of one or more cutting knives (3) relative to one or more counter knives (2) and / or a predetermined first contact point of the counter knife (2), and - the driving torque of the first drive mechanism (100) is regulated or controlled or can be controlled or regulated according to the torque variation curve of the data item.

9. The cutting device according to any one of claims 1 to 8, characterized in that - an alarm device is provided, which emits or displays an alarm signal when a predetermined tolerance of the orientation and / or shape of the one or more cutting knives (3) relative to the one or more counter knives (4) is exceeded and / or when the counter knife (4) is incorrectly oriented and / or when a predetermined tolerance of the shape of the one or more cutting knives and / or the one or more counter knives is exceeded.

10. The cutting device according to any one of claims 1 to 9, characterized in that A pivoting mechanism (500) or a displacement mechanism is provided, by means of which the cutting drum (1) can be deflected or displaced from the cutting position into an inactive position spaced apart from one or more counter knives (4).

11. The cutting device according to any one of claims 1 to 10, characterized in that A counter-rotating body, in particular a counter-cylinder (2) is provided, and the counter-knife or counter-knives (4) are formed by one or more cutting edges (8) arranged on the counter-rotating body, in particular on the counter-cylinder (2).

12. The cutting device according to claim 11, characterized in that A second drive mechanism (200) is provided, which drives the mating rotating body, in particular the mating roller (2), to perform a rotational movement around the rotation axis, wherein - the rotation axis of the counter-rotating body, in particular the counter-rotating drum (2), is oriented parallel to the rotation axis of the cutting rotary mechanism, in particular the cutting drum (1), and The direction of rotation of the rotary movement of the counter-rotating body, in particular the counter-drum (2), is oriented opposite to the direction of rotation of the cutting rotor, in particular the cutting drum (1).

13. The cutting device according to claim 12, characterized in that The first and / or second drive (100, 200) of the cutting rotary mechanism, in particular the cutting drum (1), and / or the counter-rotating body, in particular the counter-rotating drum (2) are formed by servomotors.

14. Cutting device according to claims 11 to 13, characterized in that The moment of inertia of the cutting rotor, in particular the cutting drum (1), is preferably at least 100 times smaller than the moment of inertia of the counter-rotating body, in particular the counter-drum (2).

15. Method for controlling a cutting device according to any one of claims 11 to 14, characterized in that - in a calibration method, generating data items of a variation curve of the drive torque of the first drive mechanism (100) and / or of one or more first contact points of the one or more mating knives (2) as a function of the rotation angle of the mating rotating body, in particular the mating roller (2), and - the drive torque of the first drive mechanism (100) is adjusted or can be adjusted or controlled or can be controlled as a function of the data item.

16. The method according to claim 15, characterized in that - Different sub-data items are provided in the data item, which define drive torques for different predetermined blade contact forces to be applied by one or more cutting knives (3) to one or more counter knives (4) and / or define predetermined contact points of different counter knives (2).

17. The method according to any one of claims 15 or 16, characterized in that - Exceeding of predetermined tolerances and / or incorrect orientation is detected by means of optical sensors or pressure sensors assigned to one or more cutting knives (3) and / or one or more counter knives (4).

18. The method according to any one of claims 15 to 17, characterized in that - constructing a cutting device according to claim 11, and - controlling the swivel mechanism (500) and / or the moving mechanism according to the signal of an optical sensor or a pressure sensor assigned to one or more cutting knives (3) and / or one or more matching knives (4) and / or the situation where a predetermined blade pressure force between the cutting knife (3) and the matching knife (4) is exceeded and / or according to the operating state of the superior device.

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