CH716982A1 - Apparatus and method for cutting circular filter elements from a strip of material. - Google Patents

Abstract

The present application relates to a device (1) for cutting circular filter elements from a strip material. The device (1) has a support surface (5) on which the strip material can lie flat. The device (1) also has a hold-down device (7) which can be moved linearly in a first direction perpendicular to the support surface (5). In a first, open position, the hold-down device (7) is at a distance from the support surface (5). In a second, closed position, the hold-down device (7) is lowered onto the support surface (5) so that a strip material lying on the support surface (5) is clamped between the hold-down device (7) and the support surface (5). The device (1) also has a cutting element (8) which can be moved linearly in the first direction (8) and which has at least one blade (9) for cutting the circular filter elements. The at least one blade (9) can be moved by the linearly movable cutting element (8) between a first position in which the at least one blade (9) is spaced from the support surface (5) and a second position in which the at least one blade ( 9) is lowered onto the support surface (5). In the second position, the at least one blade (9) rests on the strip material lying on the support surface (5). The at least one blade (9) is rotatably mounted about a first axis (A) which is perpendicular to the support surface (5). The device (1) has a first drive (19) with which the at least one blade (9) can be set in rotation in order to cut the circular filter elements from the strip material lying on the support surface (5). The present application also relates to a method for producing circular filter elements and an arrangement with a device as described above.

Description

Technical area

The present application relates to a device and a method for cutting circular filter elements, in particular filter elements for beverage capsules, from a strip material, in particular from a strip of a fleece. The present application also relates to an arrangement of such a device and a conveyor for beverage capsules, which enables a circular filter element to be cut, inserted and sealed in a beverage capsule.

State of the art

Devices and methods for producing circular filter elements, in particular for beverage capsules, are known to a person skilled in the art. Such filter elements are usually punched from a strip of material. When using a nonwoven material, however, problems arise during punching because the material has a rubber-like consistency, as a result of which the punching dies usually become blunt after less than a dozen punching operations.

Presentation of the invention

The object of the invention is to create a device belonging to the technical field mentioned at the outset, with which filter elements can be cut from a strip material in a reliable manner, in particular from a strip of a fleece. Furthermore, the device should have a high clock frequency when cutting and be constructed as simply as possible.

The solution to the problem is defined by the features of claim 1. According to the invention, the device for cutting circular filter elements has a support surface on which the strip material can lie flat. Furthermore, the device has a hold-down device that can be moved linearly in a first direction perpendicular to the support surface. In a first, open position, the hold-down device is spaced from the support surface. In a second, closed position, the hold-down device is lowered onto the support surface, so that a strip material lying on the support surface is clamped between the hold-down device and the support surface. Furthermore, the device has a cutting element which can be moved linearly in the first direction and which has at least one blade for cutting the circular filter elements. The at least one blade can be moved by the linearly movable cutting element between a first position in which the at least one blade is spaced from the support surface and a second position in which the at least one blade is lowered onto the support surface. In the second position, the at least one blade rests on the support surface or on the strip material resting on the support surface. The at least one blade is rotatably mounted about a first axis which is perpendicular to the support surface. The device has a first drive with which the at least one blade can be set in rotation in order to cut the circular filter elements from the strip material lying on the support surface.

By using at least one rotating blade, filter elements can be cut reliably and quickly even from nonwoven materials, which are very difficult and unreliable to punch.

The filter elements are then preferably used in beverage capsules, in particular in coffee capsules. The beverage capsules preferably contain, in a known manner, a powder for preparing a beverage, in particular a hot beverage such as coffee or tea. The beverage can be produced by passing water and / or wet steam through the capsule, the powder being extracted by the water and / or by the wet steam.

The device preferably has at least one holder on which a roll of the strip material can be attached. Alternatively, the at least one holder can also be present independently of the device. The holder or the device also preferably has a feed unit which feeds the strip material step by step to the support surface, so that new strip material can be pushed in after each production cycle of a filter element. Such feed units are known in the art.

In the context of the present application, the term “fleece” is understood to mean a structure made of fibers or filaments which are interconnected without being crossed or intertwined, as is the case, for example, when weaving, knitting, knitting or the like is. The term "nonwoven" is also used in this field for fleece. The tape material is preferably a fleece made of cellulosic fibers and / or filaments. Alternatively, however, the tape material can also be a fleece made of polymer fibers and / or polymer filaments.

When the device is used as intended, the support surface is preferably essentially parallel to a floor on which the device stands. Accordingly, the first direction is essentially vertical to the ground, that is to say in the perpendicular direction of gravity. In this case, the hold-down device moves from the first, open position at the top to the second, closed position at the bottom, and then back again.

The hold-down device is preferably moved along at least one linear guide from the first position to the second position and back again to the first position. Linear guides suitable for this purpose are known to those skilled in the art, such as a rail guide or the like, for example.

Preferably, the hold-down device is heavy enough or is pressed onto the support surface with sufficient force that the strip material resting on the support surface is clamped in a non-slip manner between the support surface and the hold-down device.

The cutting element preferably has a circular blade which has a diameter which corresponds to the diameter of the circular filter elements to be cut with the device.

Alternatively, the at least one blade can also be designed as a round blade whose axis of rotation is parallel to the support surface and which can be rotated around the first axis at a distance corresponding to half the diameter of the circular filter element to be cut out, so that the round blade can roll in a circle in the second position on the support surface or on a strip material lying on it.

The at least one blade can be fixedly or alternatively releasably connected to the cutting element. The advantage of a detachable connection is that circular filter elements with different diameters can be cut with the device without the need for a time-consuming conversion of the device.

The first distance and the second distance can be the same size. However, the first and the second spacing are preferably of different sizes. This means that in the first position the at least one blade and the hold-down device are present at a distance from one another.

The hold-down device preferably has an opening through which the cutting element can be passed. With this configuration, the strip material lying on the support surface can be clamped around the at least one blade between the hold-down device and the support surface.

The first drive is preferably designed in such a way that it allows the rotational speed of the at least one blade to be varied. As a result, depending on the type and nature of the strip material resting on the support surface, a speed of rotation and / or an angle of rotation can be set with which the most optimal cutting result can be achieved. The rotational speed can preferably be set by an operator on a control of the device.

The movement of the hold-down and the cutting element is preferably carried out via a corresponding drive, the cutting element and the hold-down can each have their own drive or, alternatively, can also be moved via the same drive.

The device preferably has more than one cutting element. If the device has several cutting elements, these are preferably arranged next to one another in such a way that the area of the strip material is used as efficiently as possible when the circular filter elements are cut. If the device has more than one cutting element, the device preferably has one hold-down device per cutting element. Alternatively, however, the device can have a single hold-down device for several or all of the cutting elements.

Preferably, the device has a second drive with which the cutting element can be moved linearly along the first direction, wherein the second drive is designed such that the at least one blade with a predefined force against the support surface or on it overlying tape material can be pressed.

By pressing with a predefined force it is achieved that an optimal cutting result can be achieved depending on the type and nature of the strip material resting on the support surface and depending on the rotational speed and / or rotational angle of the at least one blade.

The predefined force can preferably be set by an operator on a control of the device. The predefined force can be constant. Alternatively, however, the predefined force can also be a force curve, that is to say a force that changes over time.

Preferably, the cutting element and the hold-down are attached to a frame which can be moved in the first direction by the second drive.

Since the same second drive can be used for both components of the device, the structure of the device is simplified.

The support surface preferably has a circular opening with a cutting edge, wherein the circular opening is positioned and dimensioned such that the at least one blade in the second position at least partially engages in the circular opening.

The interaction of the at least one blade and the circular opening enable the strip material to be sheared.

Preferably, the hold-down device can be moved linearly in the first direction relative to the frame, the hold-down device being pretensioned in the direction of the support surface by means of a spring force. As a result of this bias, the hold-down device is closer to the support surface in the first position relative to the at least one blade.

With this configuration, the hold-down strikes when the hold-down and cutting element moves into the second position in front of the at least one blade on the strip material lying on the support surface, whereby this is already clamped between the hold-down and the support surface before the at least one The blade hits the tape material lying on the support surface. Due to the movable arrangement of the hold-down relative to the frame, despite the hold-down already resting on the strip material, the cutting element with the at least one blade can be moved further in the direction of the support surface or, if there is a circular opening, the at least one blade can be partially moved further into it.

With the spring element, the necessary force can be generated with which the hold-down device is pressed onto the strip material lying on the support surface. For example, at least one spiral or helical spring or a gas pressure spring can be used as the spring element.

Preferably, the cutting element is rotatably attached to the frame by a roller bearing. The roller bearing is preferably a ball bearing. By using a roller bearing, a smooth and low-maintenance rotatable fastening between the cutting element and the frame can be achieved. Alternatively, the cutting element is preferably rotatably attached to the frame via a slide bearing.

The first drive and / or the second drive are preferably designed as a pneumatic drive, hydraulic drive, as an electromechanical drive and / or as a servo motor.

Preferably, the device has a plunger which runs centrally through the cutting element and which is linearly movable in the first direction relative to this, wherein the plunger can be moved into the circular opening to a circular filter element after cutting through ejecting the at least one blade through the circular opening.

As a result, a circular filter element that has been cut ready for use can be removed from the strip material in a simple and quick manner. After moving the plunger out of the circular opening and moving the hold-down device and the cutting element back into the first position, the strip material can be moved further on the support surface so that a circular filter element can then be cut again.

The plunger preferably has at least one nozzle at one end facing the support surface, to which a negative pressure can be applied. In this embodiment, the device has a source of negative pressure, such as an air pump. By applying a negative pressure, a circular filter element resting on the plunger can briefly hold onto the plunger centrally, so that the circular filter element does not slip away from the plunger or maintains its position and orientation on the plunger during ejection through the at least one circular opening.

The plunger is preferably moved by its own drive, in particular by a pneumatic, hydraulic or electromechanical drive. In a preferred embodiment, the ram is moved by a servomotor.

The device preferably has a shaped ring which lies below the circular opening in the direction of movement of the plunger when the circular filter element is ejected. By means of this shaped ring, the circular filter element can be pressed through the plunger and shaped in such a way, wherein in particular an edge of the circular filter element can be bent over.

The frame is preferably movably attached to a holder in the first direction, the frame being biased away from the holder in the direction of the support surface by a spring force and the holder being able to be moved linearly along the first direction by the second drive.

In particular in combination with the hold-down device, which is linearly movable relative to the frame, the movement of the hold-down device and of the cutting element with the at least one blade in the first direction can be realized by means of a single drive with this embodiment. On the one hand, this simplifies the construction and maintenance of the device. On the other hand, this configuration also enables a higher clock frequency when cutting circular filter elements, since only the inertia of the single second drive is significant when moving the two components.

The present application also relates to a method for cutting circular filter elements, in particular filter elements for beverage capsules, from a strip material, in particular from a strip of fleece. In a first step, the method comprises placing a strip material on a support surface, in particular on a support surface of a device as described above. In a second step, a hold-down device is moved in a first direction, which is perpendicular to the support surface, from a first, open position, in which the hold-down device is spaced from the support surface at a first distance, into a second, closed position. In the second position, the hold-down device is lowered onto the support surface, so that the strip material is clamped between the hold-down device and the support surface. In a further step, a cutting element with at least one blade is moved in the first direction from a first position, in which the at least one blade is spaced from the support surface at a second distance, into a second position, in which the at least one blade is on the support surface is lowered, moved so that the at least one blade rests on the strip material. The at least one blade is then rotated by a first drive about a first axis which is parallel to the first direction in order to cut the circular filter elements from the strip material lying on the support surface.

In a preferred embodiment, the movements of the hold-down device and of the cutting element take place at least partially simultaneously.

The cutting element is preferably moved by a second drive, the at least one blade being pressed onto the strip material with a predefined force during the rotation.

To cut a circular filter element, the at least one blade preferably rotates 360 ° around the first axis. More preferably, however, the at least one blade rotates from 20 ° to 50 °, in particular from 30 ° to 40 °, about the first axis in order to cut a circular filter element. Cutting the circular filter elements by means of such a rotation angle can be achieved by optimally setting the force with which the at least one blade presses on the strip material. By using a first and second drive with the lowest possible inertia in conjunction with the smallest possible angle of rotation that is required for cutting, a very short clock frequency for producing a circular filter element can be achieved, in particular a clock frequency of 1/60 second.

After cutting, the circular filter element is preferably ejected into a circular opening in the support surface by a ram which runs centrally through the cutting element and which is moved along the first direction.

[0044] The circular filter element is preferably pressed through a shaped ring when it is ejected by the plunger, so that the circular filter element, which is essentially flat after being cut from the strip material, can be shaped or bent. In particular, an edge of the circular filter element can be bent over in this way.

The present application also relates to an arrangement with a device according to the above description and a conveying means for beverage capsules, in particular coffee capsules. The arrangement also has transfer means with which circular filter elements cut by the device can be transferred from the device into the beverage capsules.

The conveying means is preferably a conveyor belt or a link conveyor. Alternatively, the conveyor can also be designed as a circular conveyor plate or as a rotary indexing table. The conveying means has in particular openings or depressions, in each of which a beverage capsule can be inserted.

The transfer means preferably comprise a circular opening in the support surface and a ram of the device, the conveying means being arranged in such a way that the beverage capsules are moved through under the circular opening. The transfer means further comprise a lifting device for a beverage capsule, which is arranged below the circular opening and concentrically therewith, wherein the lifting device lifts a beverage capsule out of the conveying means essentially up to the circular opening, so that a cut circular filter element by means of the plunger through the circular Opening can be pushed into the beverage capsule.

The plunger preferably has at least one sealing means with which a circular filter element can be sealed with a beverage capsule. The at least one sealing means is preferably designed as an ultrasonic sonotrode, which makes it possible to seal the circular filter element to the beverage capsule by means of ultrasonic welding. Alternatively, the at least one sealing element can also be a heating element with which the circular filter element can be heat-sealed with the beverage capsule.

The arrangement preferably also has a shaped ring, which is arranged below the circular opening in such a way that a circular filter element ejected by the plunger is pressed through this shaped ring, so that the circular element which is essentially flat after cutting is at least partially is shaped. For example, an edge of the circular filter element can be bent upward through the shaped ring.

Further advantageous embodiments and combinations of features of the invention emerge from the following detailed description and the entirety of the patent claims.

Brief description of the drawings

The drawings used to explain the exemplary embodiment show: FIG. 1 shows an embodiment of a device according to the invention for cutting circular filter elements as a sectional drawing; 2 shows an embodiment of an arrangement according to the invention as a side elevation in a first situation, which corresponds to the first step of the method according to the invention; 3 shows the arrangement according to FIG. 2 in a second situation, which corresponds to the last step of the method according to the invention.

In principle, the same parts are provided with the same reference symbols in the figures.

Ways of Carrying Out the Invention

1 shows an embodiment of a device 1 according to the invention for cutting circular filter elements as a sectional drawing. The device 1 comprises a support surface 5 on which a strip material can rest (see FIGS. 2 & 3). The device 1 further comprises a hold-down 7 and a cutting element 8. The cutting element 8 has a blade 9 which is directed towards the support surface 5 and which is circular in the embodiment shown.

The hold-down device 7 can be moved in a first direction X, which is at right angles to the support surface 5. 1 shows the hold-down 7 in a first, open position, in which the hold-down is spaced apart from the support surface 5 at a first distance. The hold-down 7 can be moved into a second, closed position (see FIG. 3), in which the hold-down 7 rests on the support surface 5, so that a strip material, which rests on the support surface 5, is between the hold-down 7 and the support surface 5 is jammed. In the embodiment shown, the hold-down 7 is movably attached in the first direction X to a frame 11 via a first linear guide 17. The first linear guide 17 has a spring element which biases the hold-down 7 in the shown first, open position in the direction of the support surface 5.

The cutting element 8 is connected to the frame 11 via a roller bearing 10, which is designed as a ball bearing in the embodiment shown, so that the cutting element 8 is relative to the frame 11 about a first axis A, which is parallel to the first direction X. , is rotatable. The rotary movement of the cutting element 8 and with it also the blade 9 takes place by means of a first drive 19. The cutting element 8 is arranged centrally in a recess of the hold-down 7, so that the hold-down 7 extends around the cutting element 8.

The frame 11 is connected to a holder 12 so as to be linearly displaceable in the first direction X. In the embodiment shown, the frame 11 is connected to the holder 12 via two pneumatic cylinders 18.1, 18.2. With these pneumatic cylinders 18.1, 18.2, the frame 11 can be moved back and forth in the first direction X to the support surface 5 away from the latter. Simultaneously with the movement of the frame 11, the hold-down device 7 and the cutting element 8 with the blade 9 move.

In the first position, the first distance between the support surface 5 and the hold-down 7 is smaller than a second distance between the support surface 5 and the blade 9. This means that when the frame 11 moves towards the support surface 5, the hold-down 7 before the blade 9 strikes the support surface 5 or a strip material lying thereon. Because the hold-down 7 is movably attached relative to the frame 11, after the hold-down 7 strikes the support surface 5 or a strip material resting on it, the frame 11 and with it the cutting element 8 with the blade 9 can continue in the direction of the support surface 5 are moved until the blade 9 also rests on the support surface 5.

The support surface 5 has a circular opening 13 which is arranged concentrically to the blade 9, which is circular in this embodiment. The circular opening 13 has on its edge, which is directed towards the frame 11, a cutting edge 14 which is plane with the surface of the support surface 5. The cutting edge 14 and the blade 9 are designed in such a way that the blade 9 can partially move into the circular opening 13 so that a strip material lying on the support surface 5 is sheared between the blade 9 and the cutting edge 14.

The device further comprises a ram 16 which is arranged centrally within the cutting element 8 and this hold-down device 7. The plunger 16 has a drive with which it can be moved linearly in the first direction X. In the embodiment shown, the ram 16 is driven by a third drive (not shown). By moving the plunger 16 through the circular opening 13, a circular filter element cut by the device 1 can be ejected through the circular opening 13 (see FIG. 3). The circular opening 13 also has a shaped ring 15 with which a circular filter element can be shaped in combination with the plunger 16 or a punch 20 arranged at its end.

In order to prevent a circular filter element from slipping off the plunger 20 of the plunger 16, the plunger 16 and the plunger 20 have a nozzle 21 which is connected to a fluid channel 22 which is guided within the plunger 16 and the plunger 20, is connected so that a negative pressure can be applied to the nozzle 21. As a result of this negative pressure, a circular filter element resting on the plunger 22 of the plunger 16 is sucked onto the plunger 22, with which this can be secured against slipping or slipping.

FIG. 2 shows an embodiment of an arrangement 2 according to the invention, which comprises a device 1 according to FIG. 1, in a side elevation. The arrangement 2 also has a conveyor 3. In the embodiment shown, the conveying means 3 is designed as a segment conveyor in which a plurality of segments 23.1, 23.2, 23.2, three of which can be seen in FIG. 2, are joined together to form an endless belt. Each segment 23.1, 23.2, 23.2 has two openings 25.1-25.4, in each of which a beverage capsule 24.1, 24.2, 24.3 can be inserted. In the embodiment shown, the beverage capsules 24.1, 24.2, 24.3 are coffee capsules which are filled with coffee powder in a later production step. The conveyor 3 is arranged in such a way that the beverage capsules 24.1, 24.2, 24.3 are passed below the support surface 5 of the device 1, the conveyor 3 being positioned in such a way that when the beverage capsules 24.1, 24.2, 24.3 are conveyed, one capsule each time is concentrically below the circular opening 13 is located.

The arrangement 2 also has a lifting device 4 which has a recess 26 in which a beverage capsule 24.1, 24.2, 24.3 can be received. The lifting device 4 is arranged in such a way that the recess 26 is concentric with the circular opening 13. The lifting device 4 can lift a beverage capsule 24.1, 24.2, 24.3 from the opening 25.1-25.4 of the conveyor 3 in which it is located in the direction of the circular opening 13 (see FIG. 3).

In FIG. 2 it can also be seen that a strip material 6, which in particular consists of a fleece, is placed on the support surface 5. The hold-down 7 and the cutting element 8 with the blade 9 are in the first, open position.

The situation of the arrangement according to FIG. 2 corresponds to the first step of the method according to the invention.

3 shows the arrangement 2 of FIG. 2 in a situation in which the hold-down 7 and the cutting element 8 with the blade 9 are in the second, closed position, with the band material 6 between the support surface 5 and the hold-down device 7 is clamped. Compared to the situation according to FIG. 2, the conveying means 3 has moved so that a first beverage capsule 24.2 is located in a recess 26 in the lifting device 4 and in the circular opening 13.

Furthermore, the circular filter element 27 cut from the strip material 6 has been pushed through the circular opening 13 and into the first beverage capsule 24.2, which has been raised by the lifting device 4 in the direction of the circular opening 13, by a movement of the plunger 16. The circular element was pressed through the form ring 15 and thereby additionally shaped. In the embodiment shown, the edge of the circular filter element 27 has been bent upwards so that it can be more easily attached to the wall of the first beverage capsule 24.2 along its circumference.

Furthermore, in the situation shown in FIG. 3, the circular filter element 27 was sealed with the first beverage capsule 24.2 by ultrasonic welding. For this purpose, the plunger 16 is designed as an ultrasonic sonotrode.

This situation corresponds to a last step of the method according to the invention. The ram 16 is then withdrawn and the hold-down 7 and the cutting element 8 with the blade 9 are moved into the first position. The strip material 6 is then moved a predefined distance over the support surface 5 and the conveying means 3, so that a second capsule 24.1 is concentric to the circular opening 13 and to the recess 26 of the lifting device 4. Then the process goes back to the first step.

Claims (16)

1. Device for cutting circular filter elements, in particular filter elements for beverage capsules, from a strip material, in particular from a strip of fleece, with: a) a support surface on which the strip material can lie flat; b) a hold-down device which is linearly movable in a first direction perpendicular to the support surface and is spaced a first distance from the support surface in a first, open position and is lowered onto the support surface in a second, closed position, so that a The strip material lying on the support surface is clamped between the hold-down device and the support surface; c) a cutting element which is linearly movable in the first direction and which has at least one blade for cutting the circular filter elements, the at least one blade by the linearly movable cutting element between a first position in which the at least one blade is removed from the support surface in a second Is spaced apart and a second position, in which the at least one blade is lowered onto the support surface, so that the at least one blade rests on the support surface or the strip material resting on the support surface, can be moved, characterized in that the at least one blade is rotatably mounted about a first axis, which is perpendicular to the support surface, and the device has a first drive with which the at least one blade can be set in rotation, around the circular filter elements from the strip material resting on the support surface to cut. 2. Device according to claim 1, characterized in that the device has a second drive with which the cutting element can be moved linearly along the first direction, the second drive being designed such that the at least one blade counteracts with a predefined force the support surface or the strip material lying on it can be pressed. 3. Device according to one of claims 1 or 2, characterized in that the cutting element and the hold-down device are attached to a frame which can be moved in the first direction by the second drive. 4. Device according to one of claims 1 to 3, characterized in that the support surface has a circular opening with a cutting edge, wherein the circular opening is positioned and dimensioned such that the at least one blade in the second position at least partially into the circular Opening engages. 5. Device according to one of claims 3 or 4, characterized in that the hold-down device can be moved linearly in the first direction relative to the frame, the hold-down device being pretensioned by means of a spring force in the direction of the support surface, and the hold-down device in the first position relative to the at least one blade is closer to the support surface. 6. Device according to one of claims 3 to 6, characterized in that the cutting element is rotatably attached to the frame by a roller bearing. 7. Device according to one of claims 1 to 6, characterized in that the first drive and / or the second drive is designed as a pneumatic drive, hydraulic drive, as an electromechanical drive and / or as a servomotor. 8. Device according to one of claims 4 to 7, characterized in that the device has a plunger which runs centrally through the cutting element and which is linearly movable in the first direction relative to this, the plunger moving into the circular opening can be to eject a circular filter element after cutting by the at least one blade through the circular opening. 9. Device according to one of claims 3-8, characterized in that the frame is movably attached to a holder in the first direction, the frame being biased by a spring force away from the holder in the direction of the support surface, and the holder by the second drive can be moved linearly along the first direction. 10. A method for cutting circular filter elements, in particular filter elements for beverage capsules, from a strip material, in particular from a strip of fleece, comprising the steps: a) placing the strip material on a support surface, in particular a device according to one of claims 1 to 9; b) Moving a hold-down device in a first direction, which is perpendicular to the support surface, from a first, open position, in which the hold-down device is spaced apart from the support surface at a first distance, into a second, closed position, in which the hold-down device hits the The support surface is lowered so that the strip material is clamped between the hold-down device and the support surface; c) Moving a cutting element with at least one blade in the first direction from a first position in which the at least one blade is spaced from the support surface at a second distance to a second position in which the at least one blade is lowered onto the support surface so that the at least one blade rests on the strip material; d) rotating the at least one blade about a first axis, which is parallel to the first direction, by a first drive in order to cut the circular filter elements from the strip material lying on the support surface. 11. The method according to claim 10, characterized in that the cutting element is moved by a second drive, the at least one blade being pressed onto the strip material with a predefined force during the rotation. 12. The method according to any one of claims 10 or 11, characterized in that after the cutting, the circular filter element is ejected into a circular opening in the support surface by a plunger which runs centrally through the cutting element and which is moved along the first direction. 13. The method according to claim 12, characterized in that the circular filter element is pushed through the plunger through a shaped ring which is arranged below the circular opening in the direction of movement of the plunger during ejection, in order to form the circular element. 14. Arrangement with a device according to one of claims 1 to 9 and a conveyor for beverage capsules, in particular coffee capsules, the arrangement having transfer means with which circular filter elements cut by the device can be transferred from the device into the beverage capsules. 15. The arrangement according to claim 14, characterized in that the transfer means comprise a circular opening in the support surface and a ram of the device, the conveying means being arranged such that the beverage capsules are moved under the circular opening, the transfer means being a lifting device for comprises a beverage capsule which is arranged below the circular opening and concentrically therewith, wherein the lifting device lifts a beverage capsule out of the conveying means essentially up to the circular opening, so that a cut circular filter element is pushed through the circular opening into the beverage capsule by means of the pusher can. 16. The arrangement according to claim 15, characterized in that the plunger has at least one sealing means with which a circular filter element can be sealed with the beverage capsule.