ES2650978T3 - Cutting device for plates, such as floor coverings or roof shingles made of plastic, rubber or other tough or elastic material - Google Patents

Abstract

Cutting device with a cutting blade (10) fixed in a tiltable way on a frame (1), whose edge (12) penetrates during the cut in a penetration slit (6) formed between two support stringers (2) to eject a strip of material (9 ') of a workpiece (9) in the form of a plate resting on the support stringers (2), in which the width of the penetration groove (6) is accommodated to the thickness of the material of the cutting blade so that, while the cutting blade (10) is centered in the penetration groove (6), it is between each of the two edges (4 ') of the cutting stringers or the two walls (4 ) of the slit and the wide sides (11) of the cutting blade (10) opposite them, at least in the area of the cutting edge (12), a slit distance, and in which the magnitude of the slit distance (11, 4 '), characterized in that the slit distance (11, 4') can be adjusted by means of replaceable slats (5, 31).

Description

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DESCRIPTION

Cutting device for plates, such as floor coverings or roof shingles made of plastic, rubber or other tough or elastic material.

The invention concerns a cutting device according to the preamble of claim 1.

GB 2 200 070 A, US 2,643,720, US 2,789,642 and DE 20 2008 015 612 U1 describe cutting devices in which the slit distance between the edge of the support member and the cutting blade can be adjusted by variation of the position of the support stringer.

The invention concerns a cutting device comprising a cutting blade fixed in a tiltable manner on a frame, whose edge penetrates during the cut into a penetration groove between two support stringers with a gap distance on both sides between the wide side of the cutting blade and the edge of the support stringers to eject a strip of material from a workpiece in the form of a plate deposited on the support stringers.

A cutting device such as the one described in documents DE 10 2009 043 992 A1 or DE 10 2009 003 490 A1 has a frame consisting of two support stringers that run parallel to each other and that are joined with feet on their two extremes A penetration groove extends between the two support stringers. A cutting blade mounted in a tiltable manner between the two support stringers and whose cutting edge has teeth can penetrate the penetration groove. There is then a gap distance between the wide sides of the cutting blade and the walls of the penetration groove. A cutter blade that penetrates freely and somewhat off-center in the groove is centered inside the groove under a cutting load as a result of the deformation of the workpiece, with the slit distance on both sides being approximately equal of the cutting blade.

Cutting devices of the class defined above are also known from FR 575749, FR 612747 A and FR 847014 A.

The cutting apparatus mentioned at the beginning is intended for the cutting of laminated floor plates. In the cutting devices present in the market for laminated floor plates the gap distance between the wide side of the cutting blade and the edge of the stringers is approximately 2 mm to 2.5 mm. Such a large slit is necessary to keep the forces that originate from expelling a strip of material from the laminated floor plate into the penetration groove.

The invention is based on the problem of perfecting the cutting device in the sense that plates, especially floor coverings or roof shingles of plastic, rubber or other tough or elastic material with a sufficiently high cutting quality can be cut on it .

The problem is solved with the invention indicated in claim 1. The dependent claims represent advantageous improvements of the invention. The width of the slit is adjusted according to the invention using replaceable slats.

It has been found that the cutting devices of the prior art are inadequate, as a result of the large gap between the wide side of the cutting blade and the edge of the support stringers, for cutting plates, for example coatings of plastic floor, verbigracia vinyl floor tiles. The edges of the cut are deflected when the known cutting device is used. This applies not only for vinyl floor coverings with a small thickness of the material, for example 2.5 mm, but also for vinyl coverings with a material thickness of 5 mm and much more for PVC tiles that have only a thickness of 1.8 mm. In series of tests it has been proven that a reduction in the slit distance at least in the area of the edge to values below 2 mm, that is, especially up to values between 0.2 mm and 2 mm, leads to clearly improved results . In areas far from the edge, the slit distance may be longer. Particularly in vinyl coverings with a high thickness of the material, a reduction of the gap distance between the wide side of the cutting blade and the edge of the support stringers or the wall of the slit until values less than 2 mm lead to clearly improved qualities of the cutting edge. The quality of the cutting edge of thinner material can be further improved when the slit distance is limited to 1.6 mm or 1.4 mm. Very thin PVC tiles can be optimally cut when the slit distance is somewhat greater than 0.2 mm. However, the forces to be applied for this, especially on vinyl tiles with a somewhat greater thickness of the material, are quite large. According to the invention, it is provided that the magnitude of the slit distance is adjustable. The slit distance can be adjusted during the assembly of the cutting device. However, measures can also be taken with which the slit distance can be adjusted during operation so that, for example, a cutting device designed to cut laminated plates can be modified so as to cut vinyl plates or PVC tiles. To this end, slats can be provided that join each of them with one of the support stringers. Slats of different configuration can be provided with which the distance between the edges of the beams of the beams can be adjusted during production

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support or penetration slit walls. These slats can each be fixed with suitable fixing means to one of the support stringers. Thus, for example, it is possible that the wall of the support stringer facing the penetration groove is provided with a profile, for example a profiled rib, which fits into a counter-profile, for example a profiled groove of a ribbon. The profiling can have a shape of dovetail in cross-section, whereby a slit reduction strip can be plugged onto a profiled projection. This strip is then fixedly connected to the support beam and can only be removed again after disassembly of the frame. This slit width adjustment is made during the manufacture of the cutting device. However, it is also possible to configure the fixing means so that they can be released in the finished assembly apparatus, whereby the width of the penetration slit can be varied as necessary. If the thickness of the material of the cutting blade or the thickness of the material of the cutting blade in the area of the cutting edge is not varied, then only the gap distance is varied by this measure. However, it is also possible to vary the slit distance by varying the thickness of the cutting blade at least in the area of the cutting edge. For example, the cutting blade can carry an additional blade so that the thickness of the material is increased. A measure of increasing the variation spectrum of the cutting device provides that an open cavity towards the penetration groove is made on the side of the support beam facing upwards. In this cavity a slat can be placed that is fixed to the support stringer, for example with a screw. This tightening screw can then pass through an elongated hole of the slat, whereby the slat can be displaced transversely to the direction of extension of the penetration groove and can be fixed in the different travel positions. As a consequence of this measure, the slit distance on each side of the cutting blade can be universally adapted to the respective circumstances. If laminated plates must be cut, the gap distance can then be 2 mm or more. On the contrary, if vinyl floor coverings must be cut, the gap distance can then be reduced to 1.4 mm or even 0.7 mm. If thin PVC tiles, for example 1.8 mm thick, must be cut, the slit distance can then be further reduced, for example to values less than 0.7 mm, that is, to values of 0.4 mm or 0.2 mm.

As a whole, it is envisaged that the slit distance can be adjusted in a range between 0.2 mm and 2.5 mm with the aid of suitable measures, ie slats or the like. However, it is sufficient that the lower limit is 0.4 mm.

It is especially advantageous if the cutting edge is provided with a teeth. The distance of the ridges of the teeth is then of the order of magnitude of the thickness of the material of the coatings to be cut, that is to say between 1 mm and 5 mm. However, the distance of the ridges of the teeth is preferably greater than 2 mm. The teeth have ridges that extend parallel to the axis of rotation of the cutting blade, that is to say that they run perpendicularly to normal to the surfaces of the wide sides. The ridges of the teeth preferably extend over the entire thickness of the material of the cutting blade and thus form a blunt edge. However, the ridges of the teeth can also be sharpened so that they run obliquely with a direction of changing obliqueness, whereby said ridges penetrate in a reinforced manner, next to the edge of the cutting strip, on the surface of the workpiece. job. During cutting, these teeth are driven into the surface of the workpiece to be cut to eject the strip of material from the workpiece plate. In this case, it is important that the work piece rests on both support stringers.

A preferred refinement of the invention concerns a seat and / or abutment element that can be fixed to one of the support stringers. The element extends substantially over the entire length of the support beam into which the cutting blade can penetrate. This element has a seating surface on which a partial section of the workpiece to be cut can be deposited. The seating surface extends to beams with the upper side of the support stringer or the slat located on the support stringer. The support and / or stop member has a stop strip at the edge that extends parallel to the groove wall. The distance between the wall of the slit and the slat corresponds to the measure of the typical width of a slat that can be cut in the plate material. Therefore, with the aid of this stop element, a large number of strips of material of the same width can be cut in a simple manner with which a floor strip can be formed. It is also provided that the wide sides of the cutting blade and / or the slats are provided with a non-stick coating. In particular, the walls of the groove are provided with an adherent coating. The non-stick coating may consist of a silicone coating or a PTFE coating (Teflon coating). The coating can be applied as a varnish. It is a coating like what is already known in principle, for example, for bakery molds. With a configured device of this class, adhesive coated tiles can also be cut. As a consequence of the non-stick coating of the cutting blade and the slats there is reduced the production of an adhesive bond. The teeth of the cutting blade can also be provided with a non-stick coating. Particularly in very small slit widths, involuntary bonding between the wall of the slit and the wide side of the cutting blade or the teeth of the cutting blade is prevented. The device is also suitable for cutting slate plates.

Next, examples of embodiment of the invention will be explained using the accompanying drawings. They show:

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Figure 1, in a perspective representation, a cutting device during cutting through a 5 mm thick vinyl floor plate;

Figure 2, a section according to line II-II of Figure 1;

Figure 3, the enlarged detail III of Figure 2;

Figure 4, a section according to line IV-IV of Figure 2;

Figure 5, a perspective representation of a second embodiment with the semi-open cutting blade;

Figure 6, a plan view of the cutting device shown in Figure 5 looking in the direction of arrow VI of Figure 5;

Figure 7, a section according to line VII-VII of Figure 6;

Figure 8, a perspective plan view of a ribbon 5;

Figure 9, a bottom perspective view of the ribbon 5;

Figure 10, the enlarged detail X of Figure 9;

Figure 11, a third embodiment of the invention in a representation according to Figure 5;

Figure 12, an enlarged detail of a support beam of the embodiment shown in Figure 11; Figure 13, a section like that of Figure 7 through a fourth embodiment;

Figure 14, the section according to Figure 13, but with offset slat;

Figure 15, a fifth embodiment of the invention, in which each of the two support stringers 2 has a slat 31 on its upper side defining the width of the penetration slit 6; Y

Figure 16, a perspective representation of the fifth embodiment, a stopper element 24 being further represented.

The cutting devices shown in the figures correspond substantially to those described in DE 10 2009 003 490 A1, so reference is made to this document as regards the special configuration of the frame, the cutting blade and especially its support in the two support stringers.

The drawings show a frame 1 that has two feet 3 that are each arranged at the end of two support beams 2 parallel to each other and that keep the support beams 2 at a certain distance from each other. The distance of the two support stringers 2 defines a penetration groove 6.

At one end of the two support stringers 2, a cutting blade 10 consisting of a steel blade is pivotably articulated around an articulation point 15. The cutting blade 10 has a cutting edge 12 that runs over an arc and is provided with a large number of teeth 13. The teeth 13 have ridges that run parallel to the surfaces normal to the surfaces 11 of the wide sides of the cutting blade 10 and which extend over the entire thickness of the material of the cutting blade 10.

The thickness of the material of the cutting blade 10 is greater than half the distance between the two walls 4 defining the width of the penetration groove 6. In the first embodiment shown in Figures 1 to 4, the walls 4 of the slit are formed by slats 5 that are connected on ribs 7 shaped in the form of a dovetail of the support stringers 2 consisting of aluminum.

Figure 3 shows that the slats 5 form edges 4 '. It is a question of support stringers 4 'on which the workpiece 9 to be cut can be supported. Likewise, it can be seen in Figure 3 that each of the two wide sides 11 of the cutting blade 10 inserted in the penetration groove 6 has a gap distance with respect to the edge 4 'of the support stringers. Since the walls 4 of the groove run parallel to each other, said walls 4 have with respect to the wide side 11 of the cutting blade 10 the same distance that the edge 4 'of the support stringers also has.

The slats 5 can be plugged or crimped onto the profiled rib 7 of the support member 2 during the assembly of the cutting device. The profiled rib 7 has a shape of a dovetail, whereby the slat 5 consisting of metal is attached to the support member 2 by means of a joint of form. To make cutting devices for different materials, slats 5 configured in different ways can be used. The slats differ substantially by their wall thickness, so with slats

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different slit distances can be adjusted between the walls 4 of the slit and the respective wide side 11 of the cutting blade 10. If the cutting device is designed to cut laminated plates, then a strip 5 of correspondingly thin wall is used , thereby providing a large distance between the walls 4 of the groove or the front surfaces of the slats 5. On the contrary, if the cutting device must be designed for vinyl floor coverings, then slats 5 of material are used thicker, so that the walls 4 of the groove have a smaller distance from one to the other. This is similarly true for cutting devices intended for PVC tiles, in which the corresponding slats 5 are made with an even greater thickness of the material, whereby the walls 4 of the slit have an even smaller distance between them.

It is also planned to configure the slats so that they can be varied in a completely mounted cutting device. For example, the tie-up means with which the slats 5 are attached to the support stringers 2 can be designed so that they are releasable. However, it is also planned to configure the slats 5 so that they can move with respect to the support stringers 2.

It can also be deduced from the drawings that a rotating stop 8 is arranged on the support stringers 2. This stop 8 is substantially an adjustment aid. Because of the cutting edge of the cutting edge 12, whose teeth 13 penetrate the workpiece 9 during the cutting, this workpiece 9 is barely displaced on the support stringers 2 during the cutting. The articulation 15 may be configured in the manner described in DE 10 2009 043 992 A1. A movement of the workpiece 9 during cutting is then completely prevented. For this reason, document DE 10 2009 043 992 A1 is also incorporated with all its contents in this application with regard to the configuration of the tilt bearing 15.

Using slats 5 of different configurations the optimum slit distance has been obtained in tests. Then slats 5 have been used that have different thicknesses of material from one another. In Table 1 it can be seen that 5 mm thick vinyl coatings with slit widths of 0.45 mm, 0.7 mm, 0.85 mm, 1.1 mm and 1.35 can be cut with high quality mm Always smooth cutting edges are presented at the edge of the cut. However, with small slit widths, a very large force must be applied to the handle 14 of the cutting blade 10.

 Slit Width [mm]

 Vinyl siding 5 mm Vinyl siding 4 mm Vinyl siding 2.5 mm PVC slabs 1.8 mm

 0.45

 smooth edge smooth edge smooth edge smooth edge

 very large force very large force large force moderate force

 0.70

 smooth edge smooth edge smooth edge smooth edge

 large force large force moderate force moderate force

 0.85

 smooth singing moderate strength smooth singing moderate strength smooth singing moderate strength slightly deflected singing

 moderate strength

 1.10

 smooth edge moderate force smooth edge moderate force slightly deflected edge moderate force deflected edge light force

 1.35

 smooth singing moderate force slightly singing deflected moderate strength slightly singing deflected moderate strength strong singing deflected light force

Table 1

In tests carried out with 4 mm thick vinyl coverings, it has been seen that with large slit widths, slightly deflected cutting edges are produced. In the case of vinyl coverings with a material thickness of 2.5 mm, this effect was already manifested with slit widths of 1.1 mm. In PVC tiles with a

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material thickness of 1.8 mm slit widths of 0.85 mm already led to slightly deflected edges. However, the results with slightly deflected edges were altogether profitable. Optimum results are obtained when the slit width between a wide side 11 of the cutting blade and a edge 4 'of the support stringer or the wall 4 of the groove is always in a range of 0.4 to 0.7 mm . The cutting device is then not only suitable for cleanly cutting vinyl coatings with a thickness of the material between 2.5 mm and 5 mm. With the device you can also cleanly cut PVC tiles with a material thickness of only 1.8 mm. A somewhat greater force consumption is certainly necessary for the cutting of thick material vinyl coatings. However, this is acceptable because of the lever arm with which the handle 14 is fixed to the cutting blade 10.

If the cutting device should be used only for vinyl coverings with a thickness of the material between 2.5 mm and 5 mm, then the useful gap distance range is then between 0.5 mm and 1.4 mm.

In principle, smaller slit distances are also possible up to 0.2 mm. However, then the force consumption increases.

As can be seen from Figure 4, the teeth 13 are driven into the workpiece 9, whereby the strip of material 9 'ejected from the workpiece 9 receives a notch in its side facing upwards. This notch acts by reducing the cutting force.

With the cutting device according to the invention, the slit distance can be adjusted to the respective material to be cut, so that precisely in thin materials, quality commitments do not have to be established as regards the edge of the cut.

In an improvement of the invention it is provided that the magnitude of the slit distance is not only adjustable by the choice of the slat 5 from a plurality of slats 5 of different configurations. On the contrary, it is provided that the slat 5 can be displaced or relocated with respect to the support beam 2. In the exemplary embodiment shown in Figures 5 to 10, the two support stringers 2 each have a cavity 17 open on its upper side towards the slit 6. In each of the two cavities a ribbon 5 is placed. The cavity 17 has a recessed area that runs parallel to the groove 6 and is limited by a shoulder 23 towards the slit 6.

The slat 5 has a step 20, which rests on the shoulder 23, and a section that fits into the cavity.

The bottom of the cavity has notches 22 that run parallel to the direction of extension of the slat 5 and into which toothed ribs 21 can penetrate from the back side of the slat 5. The distance of the serrated nerves 21 or the notches 22 defines a weft measure within which the distance of the wall 4 of the groove to the wide side 11 of the cutting blade 10 can be adjusted. The wall 4 of the groove is formed here by a side wall of the slat 5.

A total of three elongated holes are arranged on the slat 5 which extend transversely to the extension direction of the slat 5. Fixing screws 16 pass through the elongated holes 16 which are screwed into threaded holes of the cavity 17. Loosening these fixing screws 16 that immobilize the position of the slat 5, the slit width can be adjusted, that is, the distance between the two walls 4 of the slit, always taken from a wide side 11. In Figure 7 they have been hinted with dashed lines and points different positions of the slats 5, to which a measure of distance different from the walls 4 of the slit always belongs.

On the surface of the slat 5 that faces upwards, teeth 19 are arranged that immobilize the workpiece.

In Figure 7 it can also be seen that the cutting blade 10 is constituted by two blades resting flat on one another.

In Figures 11 and 12 it can be seen that the support stringers 2 have on their outer side two grooved grooves 27, 28. A seat and / or stop element 24 has a hook 26 which is configured as a hook strip. This hook 26 can be engaged in one of the two grooves 27, 28. The seat and / or stop member 24 has a seat surface 29 and a stop strip 25 which runs at a right angle to the seat surface.

When the element 24 is fixed in the uppermost groove 27, the seating surface 29 is bundled with the upper side of the slat 5 and thus forms an extension of the workpiece seat.

The slat 25 runs at a constant distance from the wall 4 of the groove parallel to the slat 5 and is located at a distance of approximately 5 cm from the wall 4 of the groove. With this stop element, strips of material of constant width can be cut. The width is sized in this case so that

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These strips can be used as foot slats.

If the stopper element 24 is engaged in the lower groove 28, which is represented by dashed and dotted lines in figure 12, the stopper element 24 is then in a position of non-use. In this position the cutting of floor tiles or the like with a freely selectable position of the cut is not impaired.

In the embodiment shown in Figures 13 and 14, the wall 4 of the groove is also always formed by a slat 5. The slat 5 is also fixed here with a fixing screw 16 to the upper side of the support beam 2. With An adjusting screw 30 can be adjusted by the slit distance 4 once the screw 16 has been released. To this end, the head section of the screw 30 is mounted in an axially fixed position. The threaded section of the screw 30 meshes with an internal thread of the slat 5, whereby the slat 5 can be displaced by turning the screw 30.

In the fifth embodiment shown in Figures 15 and 16, the slat 5, which is hooked or plugged on the profiled rib 7, defines the maximum possible width of the penetration groove 6. To reduce the width of the penetration groove 6 a pair of separate slats 31 are provided. On the upper side of each support beam 2, two open cavities 17 extend upward, the two longitudinal walls of which are offset. Seen in cross-section, the cavities 17 have a dovetail shape.

If additional slats 31 are not crimped in the two cavities 17, the upper edge of the slit is then formed by the upper edge of the slat 5 crimped on the profiled rib 7. In this state, for example, a laminated plate can be cut with The cutting device.

If a vinyl plate or PVC plate must be cut with the same cutting device, but with a penetration groove 6 of reduced width, the slats 31 which reduce the width of the slit are then fixed on the support stringers 2 of penetration 6. For this purpose, the slats 31 have profiled projections that can be inserted into the cavities 17. Preferably, the profiled projections are crimped into the cavities 17. The lath 31 for this purpose has an elastic core 32 which can be applied to a side wall of the groove 17.

The slats 31 rest on the upper side of the support beam 2 and on the slat wall 5 facing upwards. The slats 31 protrude from the upper edge edge of the slat 5 and thus form the walls of the groove or the edges 4 'of the support stringers, thereby forming a penetration groove 6 of reduced width.

Figure 16 shows that this variant can also be combined with a stop element 24. The stop element 24 has a recess 33 in which the slats 31 are housed in a position of non-use. A slot 28 is also provided here to fix the stop member 24 to the support member 2 in a position of non-use.

The two wide sides 11 of the cutting blade 10 are provided with a non-stick coating. Edge 12 or teeth 13 may also be provided with a non-stick coating of this kind. The slats 5 are also provided with a non-stick coating. At least the walls 4 of the groove or the slats in the area of the upper edge 4 'are provided with a non-stick coating. In the embodiment shown in Figures 15 and 16, the strip 31 is also provided with a non-stick coating. The non-stick coating may consist of a silicone coating or a PTFE coating.

All revealed features are (by themselves) essential to the invention. In the dissemination of the content of the application, the informative content of the corresponding / attached priority documents (copy of the previous application) is also fully incorporated with this mention, and also with the purpose of accepting characteristics of these documents in claims of the present request The subordinate claims characterize in their wording optionally juxtaposed an autonomous inventive refinement of the state of the art, especially for making partial applications on the basis of these claims.

List of reference symbols

 one

 Frame

 2

 Support beam

 3

 Foot

 4

 Slit wall

 4'

 Support stringer edge

 5

 Ribbon

6

7

8

9

9 '

10

eleven

12

13

14

fifteen

16

17

18

19

twenty

twenty-one

22

2. 3

24

25

26

27

28

29

30

31

32

33

Penetration slit

Profiled nerve

Stop, top, maximum as a noun, top as an adverb

Workpiece

Material strip

Cutting blade

Wide side

Edge

Tooth

Mango

Articulation point

Screw

Cavity

Elongated hole

Tooth

Step

Serrated nerve

Notch

Shoulder

Stop element Stop strip Hook Slot Slot

Seating surface

Screw

Ribbon

soul

Cavity

Claims (11)

5 10 fifteen twenty 25 30 35 1. Cutting device with a cutting blade (10) fixed in a tiltable manner on a frame (1), whose edge (12) penetrates during the cut into a penetration slit (6) formed between two support stringers (2) to eject a strip of material (9 ') from a workpiece (9) in the form of a plate resting on the support stringers (2), in which the width of the penetration groove (6) is accommodated to the thickness of the material of the cutting blade so that, when the cutting blade (10) is centered in the penetration groove (6), it is between each of the two edges (4 ') of the cutting stringers or the two walls (4) of the slit and wide sides (11) of the cutting blade (10) opposite them, at least in the area of the cutting edge (12), a slit distance, and in which the magnitude can be adjusted of the slit distance (11, 4 '), characterized in that the slit distance (11, 4') can be adjusted by means of replaceable slats (5, 31 ). 2. Cutting device according to claim 1, characterized in that the slats (5, 31) that form the edge (4 ') of the support stringer or the wall (4) of the groove are fixed to the support stringer (2) . 3. Cutting device according to any of the preceding claims, characterized by walls (4) of the groove adjacent to the respective edge (4 ') of the support member, which run parallel to each other and are formed by the slats (5 , 31), and the distance of which is defined by the size of the ribbon (5, 31). 4. Cutting device according to any of the preceding claims, characterized in that the slats (5, 31) are each placed in a cavity (17) of the upper side of the support (2) and a distance adjustment is possible slit by changing the slats (31). 5. Cutting device according to any of the preceding claims, characterized in that the slit distance (11, 4 ') can be adjusted by selecting a pair of slats (5, 31) within a group of different pairs of slats ( 5, 31). 6. Cutting device according to any of the preceding claims, characterized in that the slats (5) are each supported by profiled ribs (7) of the support stringers (2). 7. Cutting device according to any of the preceding claims, characterized in that the adjustment of the width of the slit is possible during manufacturing or during use. 8. Cutting device according to any of the preceding claims, characterized in that the thickness of the cutting blade (10) can be adjusted at least in the area of the cutting edge (12), for example, by thickening elements. 9. Cutting device according to any of the preceding claims, characterized in that the cutting edge (12) is provided with teeth (13) having ridges that run preferably parallel to the tilt axis and which extend substantially throughout the thickness of the material of the cutting blade (10). 10. Cutting device according to any one of the preceding claims, characterized by an element (24) that can be fixed to the support beam (2) and has a seating surface (29) and / or a slat (25). 11. Cutting device according to any of the preceding claims, characterized in that at least the wide sides (11) of the cutting blade (12) and / or the slats (5) that form the wall (4) of the slit are provided with a non-stick coating.