EP2714343B1 - Cutting device for plates, like floor tiles or shingles made of plastic, rubber or another flexible material - Google Patents

Description

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

Cutting devices in which the gap distance between the carrier beam edge and cutting blade is adjustable by changing the position of the support beam, describe the GB 2 200 070 A . US 2,643,720 . US 2,789,642 and DE 20 2008 015 612 U1 ,

The invention relates to a cutting device with a pivotally mounted on a frame cutting blade, the cutting edge dips when cutting into a dip slot between two beams with a two-sided gap distance between Schneidmesserbreitseite and Tragholmkante to push out of a resting on the support bars plate-shaped workpiece a strip of material.

A cutting device, as used by the DE 10 2009 043 992 A1 respectively.
DE 10 2009 003 490 A1 is described, has a frame which consists of two mutually parallel support beams, which are connected at both ends with feet. Between the two beams extends a dip slot. A pivotally mounted between the two support bars cutting blade whose cutting edge has teeth can dip into the immersion slot. It remains between the broad sides of the cutting blade and the slot walls of the immersion slot a gap distance. A cutting blade which dives freely into the slot somewhat eccentrically also centers itself under cutting load as a result of a deformation of the workpiece into the slot, so that the gap spacing on both sides of the cutting blade is approximately the same.

Cutting devices of the aforementioned type are also known from the FR 575749 , of the FR 612747 A and the FR 847014 A ,

The above-mentioned cutter is provided for dividing laminate floor panels. For laminate flooring slabs on the market, the gap distance between the cutting blade broad side and the spar rail edge is about 2mm to 2.5mm. Such a large gap is required in order to minimize the forces that arise when pushing out a strip of material from the laminate floor panel into the immersion slot.

The invention has the object of developing the cutting device to the effect that can be cut on their plates, especially floor coverings or shingles made of plastic, rubber or other tough or elastic material with sufficiently high quality cut.

The problem is solved by the invention defined in claim 1. The subclaims represent advantageous developments of the invention. The gap width adjustment is carried out according to the invention by using exchangeable strips.

It has been found that the cutting devices of the prior art due to the large gap distance between the Schneidmesserbreitseite and the spar beam edge for dividing plates, for example. Floor coverings made of plastic, such as vinyl floor tiles are unsuitable. The cut edges fray when using the known cutting device. This applies not only to vinyl floor coverings with a low material thickness, for example 2.5mm, but also for vinyl floor coverings with 5mm material thickness and especially for PVC tiles, which are only 1.8mm thick. In test series it has been found that a reduction of the gap distance, at least in the region of the cutting edge to values below 2 mm, in particular to values between 0.2 mm and 2 mm, leads to significantly improved results. In areas away from the cutting edge, the gap distance may be greater. Especially for vinyl coverings with a high material thickness, a reduction of the gap distance between the cutting blade broad side and the supporting beam edge or diaphragm wall to values below 2 mm leads to significantly improved cutting edge qualities. The cut edge quality of thinner material can be further improved if the gap distance is limited to 1.6 mm or 1.4 mm. Very thin PVC tiles can be cut optimally if the gap distance is slightly larger than 0.2 mm. However, the forces to be expended are quite high, especially for vinyl tiles with a slightly higher material thickness. According to the invention it is provided that the size of the gap distance is adjustable. The gap distance can be adjusted during assembly of the cutting device. However, measures may also be taken to adjust the gap distance during operation so that, for example, a cutting device designed to cut laminate plates may be modified to cut vinyl or PVC tiles. For this purpose, strips are provided, which are each connected to one of the support beams. There are provided differently shaped strips, with which the distance between the Tragholmkanten or the immersion slot walls can be adjusted during manufacture. These strips can be fastened with suitable fastening means in each case on one of the support beams. Thus, it is for example possible to provide the pointing in the direction of the immersion slot wall of the support beam with a profiling, for example, a profile rib, which engages in a counter-profiling, for example, a profile groove of a bar. The profiling may have a dovetail shape in cross section, so that a gap reduction strip can be pushed onto a profile projection. Such a bar is then fixed with connected to the spar and can only be removed after disassembly of the frame. Such a gap width adjustment takes place during the production of the cutting device. But it is also possible to design the fasteners so that they can be solved in the ready-mounted device, so that the width of the immersion slot can be changed as needed. If the material thickness of the cutting blade or the material thickness of the cutting blade is not changed in the region of the cutting edge, the gap distance is changed solely by this measure. But it is also possible to change the gap distance by changing the thickness of the cutting blade, at least in the region of the cutting edge. For example, that can Cutting blade received an additional sheet, so that the material thickness is increased. A measure increasing the variation spectrum of the cutting device provides that a depression open towards the immersion slot is incorporated in the upward-pointing side of the carrier beam. In this recess, a bar can be inserted, which is fastened for example with a screw on the spar. In this case, this clamping screw can pass through an oblong hole of the strip, so that the strip can be displaced transversely to the extension direction of the immersion slot and can be set in the individual displacement positions. According to this measure, the gap distance on each side of the cutting blade can be universally adapted to the particular situation. If laminate panels are to be cut, the gap spacing may be 2 mm or more. If, on the other hand, vinyl floor coverings are to be cut, the gap distance can be reduced to 1.4 mm or even 0.7 mm. If thin PVC tiles, for example 1.8 mm thick, are to be cut, the gap distance can be further reduced, for example to values below 0.7 mm, ie to values of 0.4 mm or 0.2 mm.

Overall, it is provided that by means of suitable measures, so strips or the like, the gap distance can be adjusted in a range between 0.2 mm and 2.5 mm. But it is sufficient if the lower limit is 0.4 mm.

It is of particular advantage if the cutting edge is provided with a toothing. The distance between the tooth ridges lies in the order of magnitude of the material thickness of the coverings to be cut, ie between 1 mm and 5 mm. Preferably, however, the distance of the tooth ridge is greater than 2mm. The teeth have tooth ridges which extend parallel to the axis of rotation of the cutting blade, that is perpendicular to the surface normal of the broad side surfaces. The tooth ridges preferably extend over the entire thickness of the material Cutting blade and thus form a dull cutting edge. The tooth ridges can also be ground so that they run obliquely with alternating oblique direction, so that they enter reinforced at the edge of the cutting strip in the surface of the workpiece. When cut, these teeth dig into the surface of the workpiece to be cut to push the strip of material out of the workpiece plate. It is important if the workpiece is supported on both supporting beams.

A preferred embodiment of the invention relates to a support and / or stop element, which can be attached to one of the support beams. The element extends substantially over the entire length of the supporting beam, in which the cutting blade can dip. It has a bearing surface on which a portion of the workpiece to be cut can be placed. The support surface extends flush to the top of the support beam or lying on the support rail bar. At the edge of the support and / or stop element has a stop bar, which extends parallel to the slot wall. The distance between the slot wall and stop bar corresponds to the typical width dimension of a baseboard, which can be cut out of the plate material. In this respect, a plurality of equal width strips of material can be cut with the help of this stop element in a simple manner, with which a baseboard can be formed. It is further contemplated that the broad sides of the blade and / or the strips are provided with a non-stick coating. In particular, the slot walls are provided with an adhesive coating. The adhesive coating may be a silicone coating or a PTFE (Teflon coating). The coating can be applied as a varnish. It is a coating, as it is in principle already known, for example, from baking pans. With a device designed in this way, adhesive-coated tiles can also be cut. Due to the non-stick coating of the blade and the strips, adhesion of the adhesive is reduced there. Also the toothing of the cutting knife can be provided with a non-stick coating. In particular, with very narrow slot widths unwanted bonding between the slot wall and Schneidmesserbreitseite or cutting blade teeth is prevented. The device is also suitable for cutting slate slabs.

Fig. 1

in einer perspektivischen Darstellung eine Schneidevorrichtung beim Schnitt durch eine 5mm starke Vinyl-Fußbodenplatte;

Fig. 2

einen Schnitt gemäß der Linie II - II in Figur 1;

Fig. 3

den vergrößerten Ausschnitt III aus Fig. 2;

Fig. 4

einen Schnitt gemäß der Linie IV - IV in Fig. 2;

Fig. 5

eine perspektivische Darstellung eines zweiten Ausführungsbeispiel mit halb geöffnetem Schneidmesser;

Fig. 6

eine Draufsicht auf die in Fig. 5 dargestellte Schneidevorrichtung in Blickrichtung des Pfeiles VI in Fig. 5;

Fig. 7

einen Schnitt gemäß der Linie VII - VII in Fig. 6;

Fig. 8

eine perspektivische Draufsicht auf eine Leiste 5;

Fig. 9

eine perspektivische Unteransicht auf die Leiste 5;

Fig. 10

den vergrößerten Ausschnitt X in Fig. 9;

Fig. 11

ein drittes Ausführungsbeispiel der Erfindung in einer Darstellung gemäß Fig. 5;

Fig. 12

einen vergrößerten Ausschnitt eines Tragholmes des in Fig. 11 dargestellten Ausführungsbeispiels;

Fig. 13

einen Schnitt wie Fig. 7 eines vierten Ausführungsbeispiels;

Fig. 14

den Schnitt gemäß Fig. 13, jedoch mit verstellter Leiste;

Fig. 15

ein fünftes Ausführungsbeispiel der Erfindung, bei dem jeder der beiden Tragholme 2 auf seiner Oberseite eine Leiste 31 trägt, die die Weite des Eintauschlitzes 6 definiert und

Fig. 16

eine perspektivische Darstellung des fünften Ausführungsbeispiels, wobei zusätzlich ein Anschlagelement 24 dargestellt ist.

Embodiments of the invention are explained below with reference to accompanying drawings. Show it:

Fig. 1

in a perspective view of a cutting device when cut through a 5mm thick vinyl floorboard;

Fig. 2

a section along the line II - II in FIG. 1 ;

Fig. 3

the enlarged section III Fig. 2 ;

Fig. 4

a section along the line IV - IV in Fig. 2 ;

Fig. 5

a perspective view of a second embodiment with half-opened cutting blade;

Fig. 6

a top view of the in Fig. 5 shown cutting device in the direction of arrow VI in Fig. 5 ;

Fig. 7

a section along the line VII - VII in Fig. 6 ;

Fig. 8

a top perspective view of a bar 5;

Fig. 9

a perspective bottom view of the bar 5;

Fig. 10

the enlarged section X in Fig. 9 ;

Fig. 11

A third embodiment of the invention in a representation according to Fig. 5 ;

Fig. 12

an enlarged section of a support Holmes of Fig. 11 illustrated embodiment;

Fig. 13

a cut like Fig. 7 a fourth embodiment;

Fig. 14

the cut according to Fig. 13 , but with an adjusted bar;

Fig. 15

a fifth embodiment of the invention, in which each of the two supporting beams 2 carries on its upper side a strip 31 which defines the width of the Einteschitzes 6 and

Fig. 16

a perspective view of the fifth embodiment, wherein additionally a stop element 24 is shown.

The cutting devices shown in the figures correspond essentially to those shown in the DE 10 2009 003 490 A1 are described, which is why reference is made to this document with respect to the particular embodiment of the frame, the cutting blade and in particular its storage on the two support beams.

The drawings show a frame 1, which has two feet 3, which are respectively arranged at the end of two mutually parallel support beams 2 and hold the support beams 2 at a distance from each other. The distance between the two supporting beams 2 defines a submerged slot 6.

At one end of the two support beams 2, a cutting blade 10, which consists of a steel blade, pivotally articulated about a pivot point 15. The cutting blade 10 has an arcuate cutting edge 12 provided with a plurality of teeth 13. The teeth 13 have tooth ridges which run parallel to the surface normal of the broad side surfaces 11 of the cutting blade 10 and extend over the entire material thickness of the cutting blade 10.

The material thickness of the cutting blade 10 is greater than half the distance between the two slot walls 4, which define the width of the immersion slot 6. At first, in the FIGS. 1 to 4 illustrated embodiment, the slot walls 4 are formed by strips 5, which are plugged onto dovetail-shaped profiled ribs 7 of the existing aluminum supporting beams 2.

The FIG. 3 shows that the strips form 5 edges 4 '. These are Tragholmkanten 4 ', where the workpiece to be cut 9 can be supported. From the FIG. 3 Furthermore, it can be seen that each of the two broad sides 11 of the cutting blade 10 immersed in the immersion slot 6 has a gap distance from the supporting beam edge 4 '. Since the slot walls 4 are parallel to each other, the slot walls 4 have the same gap distance to the broad side 11 of the cutting blade 10, which also has the carrier beam edge 4 '.

The strips 5 can be pushed or clipped on the profile rib 7 of the supporting beam 2 during assembly of the cutting device. The tread rib 7 has a dovetail shape, so that the existing metal strip 5 is held positively on the support beam 2. For the manufacture of cutting devices for different materials differently shaped strips 5 can be used. The strips differ essentially by their wall thickness, so that with different ledges different gap distances between the slot walls 4 and the respective broad side 11 of the cutting blade 10 can be adjusted. If the cutting device is to be designed for cutting laminate plates, then a correspondingly thin-walled strip 5 is used, so that a large distance is provided between the slot walls 4 or the end faces of the strips 5. On the other hand, if the cutting device is to be designed for vinyl floor coverings, thicker strips 5 are used, so that the slot walls 4 have a smaller distance from one another. The same applies mutatis mutandis to cutting devices for PVC tiles, in which the associated strips 5 are formed even thicker material, so that the slot walls 4 have an even smaller distance from each other.

It is further provided that the strips are designed so that they can be changed in an assembled cutting device. For example, the captive means with which the strips 5 are fastened to the support bars 2, can be designed so that they are detachable. But it is also intended to make the strips 5 so that they are adjustable relative to the supporting bars 2.

It can also be seen from the drawings that a rotatable stop 8 is arranged on the supporting bars 2. This stop 8 is essentially an adjustment aid. Because of the toothing of the cutting edge 12, the teeth 13 dive when cutting into the workpiece 9, the workpiece 9 is hardly moved over the support beams 2 during the cut. The joint 15 may be formed as shown in the DE 10 2009 043 992 A1 is described. Then a displacement of the workpiece 9 during the cut is completely prevented. The DE 10 2009 043 992 A1 Therefore, in terms of the design of the pivot bearing 15 is fully included in this application.

Using differently shaped strips 5 the optimum gap distance was determined in experiments. There were used strips 5, which have mutually different material thicknesses. From Table 1 it can be seen that 5mm thick vinyl coverings can be cut with high quality at gap widths of 0.45 mm, 0.7 mm, 0.85 mm, 1.1 mm and 1.35 mm. There are always smooth cutting edges at the cutting edge. However, with small gap widths, a very high force must be exerted on the handle 14 of the cutting blade 10. <u> Table 1 </ u> Gap width [mm] Vinyl flooring 5mm Vinyl flooring 4mm Vinyl covering 2,5mm PVC tile 1,8mm 0.45 smooth edge smooth edge smooth edge smooth edge very high power very high power high power moderate power 0.70 smooth edge smooth edge smooth edge smooth edge high power high power moderate power moderate power 0.85 smooth edge smooth edge smooth edge slightly frayed edge moderate power moderate power moderate power moderate power 1.10 smooth edge smooth edge slightly frayed edge Frayed edge moderate power moderate power moderate power light power 1.35 smooth edge slightly frayed edge slightly frayed edge heavily frayed edge moderate power moderate power moderate power light power

In tests carried out with 4mm thick vinyl flooring, it was found that with large gap widths slightly frayed cut edges occur. This effect was seen in vinyl coverings with a material thickness of 2.5mm already at gap widths of 1.1mm. For PVC tiles with a material thickness of 1.8mm, gap widths of 0.85mm already led to slightly frayed edges. However, the results with slightly frayed edges were overall usable. Optimum results are achieved if the gap width between the cutting blade broad side 11 and the supporting beam edge 4 'or the slot wall 4 lies in a range of 0.4 to 0.7 mm. Then the cutting device is not only suitable to clean vinyl flooring with a thickness between 2.5mm and 5mm clean. With the device also PVC tiles with a thickness of only 1.8mm can be cut clean. When cutting material-rich vinyl coverings, a slightly higher force is required. However, this is because of the lever arm with which the handle 14 is attached to the cutting blade 10, acceptable.

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

Basically, smaller gap distances down to 0.2mm are possible. But then the effort increases.

Like from the FIG. 4 As can be seen, the teeth 13 dig into the workpiece 9, so that the material strip 9 'pushed out of the workpiece 9 receives a notch on its upward-facing side. This notch reduces the cutting force.

With the cutting device according to the invention, the gap distance can be adjusted to the particular material to be cut, so that no compromises have to be made with regard to the quality with regard to the cutting edge, especially with thin materials.

In a further development of the invention, it is provided that the size of the gap spacing can not only be adjusted by the choice of the strip 5 from a number of differently shaped strips 5. Rather, it is provided that the bar 5 can be displaced or offset relative to the carrier beam 2. In the in the FIGS. 5 to 10 illustrated embodiment, the two supporting beams 2 each have an open on its upper side to the gap 6 recess 17. In each of the two wells is a bar 5 a. The recess 17 has a parallel to the slot 6 extending, recessed area which is bounded by a shoulder 23 to the slot 6 out.

The strip 5 has a step 20 which is supported on the shoulder 23 and a portion which engages in the recess.

The bottom of the recess has parallel to the extension direction of the bar 5 extending notches 22, in the tooth ribs 21 of the back of the bar 5 can dip. The spacing of the toothed ribs 21 and the notches 22 defines a grid dimension within which the distance of the slot wall 4 from the broad side 11 of the cutting blade 10 can be adjusted. The slot wall 4 is in this case formed by a side wall of the strip 5.

In the bar 5 a total of three slots are arranged, which extend transversely to the extension direction of the bar 5. Through the slots 18 grab fastening screws 16 which are screwed into threaded holes of the recess 17. By loosening this, the position of the bar 5 fixing screws 16, the gap width, so the distance between the two slot walls 4 are each set by a broadside 11. In the FIG. 7 are dash-dotted lines indicated different layers of the strips 5, to each of which a different distance measure of the slot walls 4 belongs.

On the upwardly facing surface of the bar 5 teeth 19 are arranged, which serve to fix the workpiece.

Of the FIG. 7 It can also be seen that the cutting blade 10 consists of two sheets which lie flat on each other.

The Figures 11 and 12 It can be seen that the support beams 2 on its outer side two undercut grooves 27, 28 have. A support and / or stop element 24 has a hook 26, which is designed as a hook strip. This hook 26 can be hooked into one of the two grooves 27, 28. The support and / or stop element 24 has a bearing surface 29 and a stop strip 25 running at a right angle to the bearing surface.

If the element 24 is fastened in the uppermost groove 27, then the support surface 29 is flush with the upper side of the strip 5 and thus forms an extension to the workpiece support.

The stop bar 25 extends at a constant distance from the slot wall 4 parallel to the bar 5 and is located at a distance of about 5 cm from the slot wall 4. With this stop element can be cut strips of uniform strip width. The width is dimensioned so that these strips can be used as baseboards.

If the stop element 24 is suspended in the lower groove 28, which in the FIG. 12 dash-dotted lines, so is the stop element 24 in a non-use position. In this position, the cutting of floor tile or the like with freely selectable cutting position is not affected.

In the in the FIGS. 13 and 14 illustrated embodiment, the slot wall 4 is also formed in each case by a bar 5. Again, this is the Strip 5 is fastened with a fastening screw 16 at the top of the support Holmes 2. With an adjusting screw 30, the gap distance 4 can be adjusted with the screw 16 released. For this purpose, the head portion of the screw 30 is mounted axially fixed. The threaded portion of the screw 30 engages in an internal thread of the bar 5, so that the bar 5 can be displaced by turning the screw 30.

In the in the FIGS. 15 and 16 illustrated fifth, the bar 5, which is clipped or pushed onto the tread rib 7, the largest possible width of the immersion slit 6. In order to reduce the width of the immersion slit 6, a separate strip pair 31 is provided. On the top of each support Holmes 2 extend two upwardly open recesses 17, whose two longitudinal walls are undercut. In cross section, the recesses 17 have a dovetail shape.

If no additional strips 31 are clipped into the two recesses 17, then the upper splitting edge is formed by the upper edge of the strip 5 which is clipped onto the profiled rib 7. In this state can be cut with the cutting device, for example, a laminate plate.

If a vinyl plate or a PVC plate is to be cut with the same cutting device but with a further reduced immersion slot 6, then the strips 31 which reduce the width of the immersion slit 6 are fastened to the supporting bars 2. For this purpose, the strips have 31 profile projections, which can be introduced into the recesses 17. Preferably, the profile projections are clipped into the recesses 17. For this purpose, the strip 31 has an elastic web 32 which can rest on a side wall of the slot 17.

The strips 31 are on top of the support Holmes 2 and on the upward facing wall of the bar 5. The strips 31 project beyond the upper peripheral edge of the strip 5 and thus form the slot walls or Tragholmkanten 4 ', so that a weitverminderter immersion slot 6 is formed.

The FIG. 16 shows that this variant can also be combined with a stop element 24. The stop member 24 has a cavity 33, in which the strips 31 find in a non-use position recording. Again, a groove 28 is provided to secure the stop element 24 in a non-use position on the support beam 2.

The two broad sides 11 of the cutting blade 10 are provided with a non-stick coating. Also, the cutting edge 12 and the teeth 13 may be provided with such a non-stick coating. The strips 5 are provided with a non-stick coating. At least the slot walls 4 and the strips in the region of the upper edge 4 'are provided with a non-stick coating. In the in the FIGS. 15 and 16 illustrated embodiment, the bar 31 is provided with a non-stick coating. The non-stick coating may be a silicone coating or a PTFE coating.

All disclosed features are essential to the invention. The disclosure of the associated / attached priority documents (copy of the prior application) is hereby also incorporated in full in the disclosure of the application, also for the purpose of including features of these documents in claims of the present application. The subclaims characterize in their optional sibling version independent inventive development of the prior art, in particular to make on the basis of these claims divisional applications. <B> LIST OF REFERENCES </ b> 1 frame 25 stop bar 2 spar 26 hook 3 foot 27 groove 4 diaphragm wall 28 groove 4 ' Spar edge 29 bearing surface 5 strip 30 screw 6 Plunge slot 31 strip 7 profile rib 32 web 8th attack 33 cavity 9 workpiece 9 ' strips of material 10 cutting blade 11 broadside 12 cutting edge 13 tooth 14 Handle 15 articulation 16 screw 17 deepening 18 Long hole 19 tooth 20 step 21 toothed rib 22 score 23 shoulder 24 stop element

Claims (11)

1. Cutting device comprising a blade (10) that is pivotably fastened to a base (1), the cutting edge (12) of which blade moves into an insertion slot (6) between two supporting struts (2) when cutting, in order to press a strip of material (9') out from a planar workpiece (9) resting on the supporting struts (2), the width of the insertion slot (6) being matched to the material thickness of the blade such that, when the blade (10) is in the centre of the insertion slot (6), a gap spacing remains between each of the two supporting strut edges (4') and/or slot walls (4) and the wide faces (11) of the blade (10) opposite said edges and/or walls, at least in the region of the cutting edge (12), the size of the gap spacing (11, 4') being adjustable, characterised in that the gap spacing (11, 4') can be adjusted by means of exchangeable strips (5, 31).
2. Cutting device according to claim 1, characterised in that the strips (5, 31) that form the supporting strut edges (4') and/or the slot wall (4) are fastened to the supporting strut (2).
3. Cutting device according to either of the preceding claims, characterised by slot walls (4) that are formed by the strips (5, 31), adjoin each supporting strut edge (4') and extend in parallel with one another, the spacing of which walls is defined by the size of the strips (5, 31).
4. Cutting device according to any of the preceding claims, characterised in that the strips (5, 31) are each inserted in a recess (17) on the upper face of the support (2), and an adjustment of the gap spacing is possible by exchanging the strips (31).
5. Cutting device according to any of the preceding claims, characterised in that the gap spacing (11, 4') can be adjusted by selecting a strip pair (5, 31) from a group of different strip pairs (5, 31).
6. Cutting device according to any of the preceding claims, characterised in that each strip (5) is supported by profiled ribs (7) of the supporting struts (2).
7. Cutting device according to any of the preceding claims, characterised in that the gap width adjustment is possible during production or use.
8. Cutting device according to any of the preceding claims, characterised in that the thickness of the blade (10) is adjustable at least in the region of the cutting edge (12), for example by means of thickening elements.
9. Cutting device according to any of the preceding claims, characterised in that the cutting edge (12) is equipped with teeth (13) comprising tooth ridges that preferably extend in parallel with the pivot axis and extend substantially over the entire material thickness of the blade (10).
10. Cutting device according to any of the preceding claims, characterised by an element (24) that can be fastened to the supporting strut (2) and comprises a bearing surface (29) and/or a stop bar (25).
11. Cutting device according to any of the preceding claims, characterised in that at least the wide faces (11) of the strips (5) that form the blade (12) and/or the slot wall (4) are provided with a non-stick coating.

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