NL2027754B1

NL2027754B1 - Cutting device configured to cut a pliable object

Info

Publication number: NL2027754B1
Application number: NL2027754A
Authority: NL
Inventors: Cornelis Johannes Verbraak Ronaldus
Original assignee: Cologic B V
Priority date: 2021-03-15
Filing date: 2021-03-15
Publication date: 2022-09-27
Also published as: EP4308302A1; WO2022197179A1

Abstract

The present invention relates to a cutting device configured to cut a pliable object, such as an offcut, comprising: - a cutter comprising a cutting edge; - a contra-element comprising a recess that is configured to receive the cutting edge; and - wherein the cutter and the contra-element are moveable relative to each other to thereby interactively cut the pliable object.

Description

Cutting device configured to cut a pliable object The present invention relates to cutting device configured to cut a pliable object, such as an offcut.

Various machines, such as cutting presses and sheeters, are used in the paper processing industry.

In (flatbed) die-cutters, hereafter referred to as cutting presses, , pieces of paper, cardboard and corrugated board, are punched to obtain a predetermined form and then for instance folded into a packaging such as a cardboard box. The residual material produced in such punching operations usually has irregular shapes, whereby this residual material will frequently hook behind something during discharge thereof, and result in malfunction and interruption of the discharge multiple times per hour. Solving these malfunctions is labour-intensive and time-consuming.

A sheeter is a machine with which rolls of paper or thin cardboard are cut into sheets. In order to give the sheets right angles, a ribbon-like strip of paper or cardboard is cut off on the side of the roll during this cutting process. Such a ribbon is from several centimetres to about 10 cm in width and can be up to 1500 m in length, and is thereby very difficult to handle. Such a ribbon is thin and very flexible, and therefore it is able to get stuck into small gaps. Paper which is compressed forms a very rigid build-up. Besides such extreme long ribbons, a sheeter also produces smaller pieces of residual material, for example unusable parts at the start or the end of a roll, or when sheets are to be rejected because they do not meet the requirements. For example, sheets may have a deviation in the desired dimensions, which may lead to the specific sheet to be rejected.

Residual material of a cutting press or a sheeter, referred to as an offcut, normally consists of pliable objects, often having large dimensions. An offcut can vary in size and shape for standards, e.g. A4, A3, A2, Al, AO or other sizes (also in the B Series or C Series) up to the above mentioned ribbons from e.g. 10 cm in width up to many hundreds of metres long.

In order to allow efficient handling and transport of such offcuts for disposal or recycling thereof, it is desired to reduce the size of the offcuts to small pieces, for example in the range of a width of 10 cm and a length of 20 cm. This size of residual material can be easily handled during transport, e.g. with a dust and waste extraction system.

There is a need for a cutting device that is capable of reducing pliable objects, such as offcuts, in size to allow easy further handling of said offcuts.

An objective of the present invention is to provide a cutting device that is improved relative to the prior art and wherein at least one of the above stated problems is obviated or alleviated.

Said objective is achieved with the cutting device configured to cut a pliable object, such as an offcat, according to claim 1, comprising: - a cutter comprising a cutting edge; - a contra-element comprising a recess that is configured to receive the cutting edge; and - wherein the cutter and the contra-element are moveable relative to each other to thereby interactively cut the pliable object.

If the cutting edge enters the recess of the contra-element, most objects will be effectively cut, because the objects will be forced to bend or fold into the recess. The resistance of the object against this bending causes the cutting edge to cut through most objects, especially for relatively stiff objects, for example cardboard offcuts. In order to also cut most very pliable objects, including thin paper sheets, the recess may only be slightly oversized relative to the cutting edge. In this way, the pliable object will have to make sharp bends, leading to an increased resistance that allows the cutting edge to cut through the pliable object, even if it is a thin and very {5 pliable paper sheet.

According to a preferred embodiment, the cutting device further comprises a retainer that is configured to press the pliable object against the contra-element and thereby hold the pliable object in place during cutting thereof. Using a retainer, the pliable object is hold in place during cutting, providing additional resistance of said pliable object against bending into the recess of the contra-element. In this way, the retainer further improves cutting of pliable objects, especially for very pliable objects, such as thin paper (sheets). Moreover, the retainer does not require the recess to be only slightly oversized relative to the cutting edge, but allows the recess to be wider while still providing a reliable cutting of very pliable objects. A wider recess has the advantage that wear of the cutting edge, that may result from the cutting edge contacting side walls of the recess when the cutter and the contra-element move relative to each other, may be prevented, thereby improving the lifetime of the cutting edge of the cutter. Moreover, a wider recess has less risk of (cut) objects getting stuck in the recess.

According to further preferred embodiments of the cutting device, the retainer extends on a first side adjacent the cutter, and preferably, the retainer further extends on a second side adjacent the cutter, wherein said first side and said second side are opposite sides relative to the cutting edge of the cutter. If the retainer is arranged on one side of the cutter, it already provides some resistance against the pliable object folding into the recess of the contra-element by preventing the pliable object to slide and be pulled into the recess at the respective side of the cutter where the retainer is arranged. However, if a retainer is arranged on both opposite sides adjacent the cutter, the pliable object is hold on both opposite sides relative to the recess, effectively preventing the pliable object to be forced into the recess from either side thereof. The retainer thus holds, i.e. retains, the pliable object extended over the recess, allowing the cutting edge of the cutter to cut through the pliable object.

According to an even further preferred embodiment, the retainer is compressible and configured to compress at an interface between the contra-element and the retainer and thereby press the pliable object against the contra-element. A compressible retainer is simple, reliable and durable, and may for example comprise a rubber element. The rubber element is for example relatively firm, but still compressible. Moreover, a rubber element also provides sufficient grip to hold the pliable object.

According to an even further preferred embodiment, an outer surface of the contra- element defines a retaining surface of the contra-element, and an outer surface of the retainer defines a retaining surface of the retainer that is configured to compress and deform at the interface between the contra-element and the retainer to thereby hold the pliable object in place between the retaining surface of the contra-element and the retaining surface of the retainer during cutting thereof.

Preferred embodiments are the subject of the dependent claims.

The various aspects and features described and shown in the specification can be applied, individually, wherever possible. These individual aspects, and in particular the aspects and features described in the attached. dependent claims, may be an invention in its own right that is related to a different problem relative to the prior art.

In the following description preferred embodiments of the present invention are further elucidated with reference to the drawing, in which: Figure 1 is a perspective view of a cutting device according to the invention Figure 2 is a perspective view of the cutting device of Figure 1, seen from the other side; Figure 3 is a top view of a plurality of cutters and associated contra-elements of the cutting device of Figures 1 and 2; Figure 4 is a detailed top view of Figure 3, showing a single cutter and associated contra-element; Figure 5 is a further detailed top view of Figure 4, focussing on the interaction of a scraper that is configured to clean the recess; Figure 6 is a further detailed top view of Figure 4, focussing on the interaction of the cutter and the contra-element; Figure 7 is a cross-sectional view along the line indicated in Figure 3; Figure 8 is a cross-sectional view along the line indicated in Figure 3; Figure 9 is a cross-sectional view along the arrows indicated in Figures 3 and 4;

Figure 10 is a perspective view of Figure 9, as also indicated by the arrow in Figure 3; Figure 11 is a detailed top view at the level indicated in Figure 10; Figure 12 is a detailed top view at the level indicated in Figure 10; Figure 13 is a perspective view of a further preferred embodiment comprising a further rotatable cylinder for successive cutting of pliable objects that have already been cut by the cutter as described in the first preferred embodiment; and Figures 14-17 are perspective views of four even further preferred embodiments. A cutting device 1, as shown in Figures 1 and 2 from different viewpoints, is configured to cut a pliable object 2, such as an offcut. It comprises one or more than one cutter 3 that comprises a cutting edge 4, and one or more than one contra-element 5 that comprises a recess 6 that is configured to receive the cutting edge 4 of the one or more than one cutter 3. The cutter(s) 3 and the contra-element(s) 5 are moveable relative to each other to thereby interactively cut the pliable object 2.

In the shown embodiment, the cutting edge 4 of the cutter 3 is a circamferential cutting edge arranged at an outer circumference 26 of the cutter 3, and the contra-element 5 is a contra-cylinder 8 comprising the recess 6 at an outer circumference 9 thereof. The cutter 3 and the contra-cylinder 8 are counter-rotatable relative to each other (Figures 7 and 8) to thereby cut the pliable object 2 there between.

Each cutter 3 may comprise a round knife. Round is interpreted as shaped like or approximately like a circle. More in particular, the round knife may be a substantially circular knife, wherein the wording “substantially” is here intended to cover small deviations of a perfect circular shape, which will be acknowledged by the skilled person to only exist in theory. In view of the invention, a round knife or a substantially circular knife also comprises knives having elliptical shapes that wherein a dimension of both a semi-minor axis and of a semi-major axis of the ellipse shape allows the cutting edge 4 to extend into the recess 6 during cutting of the elongate pliable object 2.

In Figure 1. the cutting device 1 comprises an input guide 7 configured to guide residual material, hereafter referred to as pliable object(s) 2 or simply as offcut(s) 2. In Figure 2, the same cutting device 1 is shown from the other side, and the input guide 7 is not shown to provide an unobstructed view on the contra-element 5, that is a contra-cylinder 8 that comprises a plurality of integrated contra-elements 5. In the shown embodiment, the contra-cylinder 8 integrates eleven contra-elements 5, wherein each contra-element 5 comprises a recess 6 at the outer circumference 9 thereof.

As can be best seen in Figure 2, a fork-shaped guide 10 is arranged over the plurality of cutters 3, also eleven in total, and corresponding to the eleven contra-elements 5. This fork shaped guide 10 guides the pliable object(s) 2 in between the cutter 3 and the contra-element 5, which are shown in more detail in Figures 3-6.

In Figure 3, the plurality, i.e. eleven in total, cutters 3 are arranged on a rotatable shaft 11 that defines the rotation axis R, thereof. Thus, the cutting device 1 comprises one or more 5 than one further cutter 3 that is arranged on the rotatable shaft 11, and the contra-cylinder 8 comprises one or more than one further recess 6 at the outer circumference 9 thereof that is associated with the one or more than one further cutter 3.

The contra-cylinder 8 is also rotatable around a rotation axis R‚. thereof, and comprises a rotatable shaft 12, and the rotation axis R, of the cutter(s) 3 and the rotation axis R‚ of the contra-cylinder 8 extend substantially parallel relative to each other at a radial offset AR (Figures 3 and 4).

At least one of the rotatable shaft 11 that comprises the cutter(s) 3 and the contra- cylinder 8 is drivable via a drive 14. Drive 14 of the shown embodiment drives the rotatable shaft

11. The contra-cylinder 8 is drivable via a gear transmission 15, preferably comprising two toothed gear wheels 16, 17 having an equal number of gear teeth, to thereby synchronize the rotation speed of the cutter(s) 3 and the contra-cylinder 8, of which the advantages will be discussed in more detail below.

If the cutting edge 4 enters into the recess 6 of the contra-element 5, most objects 2 will be effectively cut, because the objects 2 will be forced to bend or fold into the recess 6. The resistance of the object 2 against this bending causes the cutting edge 4 to cut through most objects 2, especially for relatively stuff objects, for example cardboard offcuts. In order to also cut most very pliable objects 2, including thin paper sheets, the recess 6 may only be slightly oversized relative to the cutting edge 4. In this way, the pliable object 2 will have to make sharp bends, leading to an increased resistance that allows the cutting edge 4 to cut through the pliable object 2, even if it is a thin and very pliable paper sheet.

In the shown embodiments, the cutting device 1 further comprises a retainer 18 that is configured to press the pliable object 2 against the contra-clement 5 and thereby hold the pliable object 2 in place during cutting thereof. Using the retainer 18, the pliable object 2 is hold in place during cutting, providing additional resistance of said pliable object 2 against bending into the recess 6 of the contra-element 5. In this way, the retainer 18 further improves cutting of pliable objects 2, especially for very pliable objects 2, such as thin paper. Moreover, the retainer 18 does not require the recess 6 to be only slightly oversized relative to the cutter 3 and the cutting edge 4, but the use of a retainer 18 guarantees a reliable cutting of very pliable objects 2, even if the recess 6 is relatively wide. A wider recess 6 has the advantage that wear of the cutting edge 4, that may result from the cutting edge 3 contacting side walls of the recess 6 when the cutter 3 and the contra-element 5 move relative to each other, may be prevented, thereby improving the lifetime of the cutting edge 4 of the cutter 3. Moreover, a wider recess 6 has less risk of (cut) objects 2 getting stuck in the recess 6.

In order to remove any (cut) objects 2, that may accidentally got stuck in the recess 6, out of the recess 6, a scraper 19 may be provided (Figure 4). This scraper 19, which is shown in more detail in Figure 5, comprises protrusions 20 scraping through the recess 6.

Although it is conceivable that the retainer 18 extends only on a first side adjacent the cutter 3, said retainer 18 preferably further extends on a second side adjacent the cutter 3, wherein said first side and said second side are opposite sides relative to the cutting edge 4 of the cutter 3. If the retainer 18 is arranged on one side of the cutter 3 only, it already provides some resistance against the pliable object 2 folding into the recess 6 of the contra-element 5 by preventing the pliable object 2 to slide and be pulled into the recess 6 at the respective first side of the cutter 3 where the retainer 18 is arranged. However, if the retainer 18 is arranged on both opposite sides adjacent the cutter 3, as shown in the preferred embodiment and especially in the detailed views of Figures 4, 10, 11 and 12, the pliable object 2 is hold on both opposite sides relative to the recess 6, effectively preventing the pliable object 2 to be forced into the recess 6 from either side thereof. The retainer 18 thus holds, i.e. retains, the pliable object 2 extended over the recess 6, allowing the cutting edge 4 of the cutter 3 to cut through the pliable object 2.

According to an even further preferred embodiment, the retainer 18 is compressible and configured to compress at an interface 21 between the contra-element 5 and the retainer 18 and thereby press the pliable object 2 against the contra-element 5. A compressible retainer 18 is simple, reliable and durable, and may for example comprise a rubber element. The rubber element is for example relatively firm, but still compressible, and may for example have a Shore A hardness in the range of 30A — 60A, and more preferably in the range of 35A — 55A. In comparison, a mouse pad has a Shore A hardness of about 30A, and a pencil eraser has a Shore A hardness of about 50A. Moreover, a rubber element also provides sufficient grip to hold the pliable object.

According to an even further preferred embodiment, an outer surface 21 of the contra-element 5 defines a retaining surface 22 of the contra-element 5, and an outer surface 23 of the retainer 18 defines a retaining surface 24 of the retainer 18 that is configured to compress and deform at the interface 25 between the contra-element 5 and the retainer 18 to thereby hold the pliable object 2 in place between the retaining surface 22 of the contra-element 5 and the retaining surface 24 of the retainer 18 during cutting thereof (Figure 12).

An outer surface of the cutting edge 4 of the cutter 3 defines a cutting radius, “re” relative to a rotation axis R, of the cutter 3 (Figure 8). The retaining surface 22 of the contra- cylinder 8 is defined by the outer circumference 9 of the contra-cylinder 8, and the cutting radius “tr.” and a radius of the retaining surface 22 of the contra-cylinder 8 relative to a rotation axis R,. of the contra-cylinder 8, “r..”, overlap at the interface 25 between the contra-cylinder 8 and the retainer 18 to thereby allow the cutting edge 4 to extend into the recess 6 of the contra-cylinder 8 (Figure 7). This overlap at the interface 25 may be set via the radial offset AR (Figures 3 and 4). Moreover, the radial offset AR may be chosen to reduce shear forces to occur at the interface 25 if the retaining surface 24 of the retainer 18 defines, at the interface 25 where the retainer 18 is maximally compressed, a compressed retainer radius, “r..”, relative to the rotation axis R, of the retainer 18 that coincides with the rotation axis R, of the cutter 3, and the radial offset AR between the rotation axis R, of the cutter 3 and the rotation axis R‚ of the contra- cylinder 8 is set to fulfill the condition that |r. — Tel < 0.1 * 1, meaning that the absolute value of a difference in radii is less than 10% of the radius Tr of the retaining surface 22 of the contra- cylinder 8. Preferably, |r. — 1] < 0.05 * r, meaning that the absolute value of the difference in radii is less than 5% of the radius 1 of the retaining surface 22 of the contra-cylinder 8. If the rotation speed of the rotatable shaft 11 that comprises the cutter(s) 3 and the rotatable shaft 12 associated with the contra-cylinder 8 is identical and synchronized, as discussed above, equal or almost equal dimensions of the radii r. and r‚ results in a substantially equal peripheral speed at the interface 25 of the retaining surfaces 22, 24 of the contra-cylinder 8 and the retainer 18, respectively. Consequently, there will be no or minimal shear force between the retaining surfaces 22, 24, reducing wear thereof and causing the retainer 18 to mainly perform a compressive action to hold the pliable object 2 in place.

The radial offset AR between the rotation axis R, of the cutter(s) 3 and the rotation axis R, of the contra-cylinder 8 may be adjustable to thereby allow the cutter(s) 3 and the contra- cylinder 8 to be temporarily spaced apart for maintenance thereof. The adjustment mechanism 13 for setting the radial offset AR is shown in Figure 2.

In a preferred embodiment, the retainer 18 extends further towards the contra- element 5 than the cutting edge 4 of the cutter 3, which is apparent from the Figures wherein the retainer 18 shields the cutting edge 4 from view when the retainer 18 is uncompressed. First of all, this guarantees that the retainer 18 will come into contact with a pliable object 2 before the cutting edge 4 contacts said pliable object 2 (as shown in Figure 11). In this way, the retainer 18 may already securely hold the pliable object 2 in place at the moment the cutting edge 4 contacts the pliable object 2, to allow a reliable cutting thereof (as shown in Figure 12). Secondly, this adds to the safety of the cutting device 1, because the cutting edge 4 is for example not exposed on an upper side thereof. Thirdly, it provides a cleaning effect for the cutting edge 4. This can be best understood when looking at the cross-sectional view of Figure 7, wherein the cutting edge 4 is exposed at the interface 25 between the contra-element 5 and the retainer 18, as a result of the compression of the retainer 18 at said interface 25. However, below the interface 25, the retainer 18 bounces back to its uncompressed shape, again shielding the cutting edge 4 from view and exposure, and pushing any stuck (parts of) cut objects 2 off from the cutting edge 4, and thereby cleaning said cutting edge 4.

The retainer 18 is preferably arranged between the cutter 3 and one or more than one support plate 27. If retainer 18 is arranged on both sides relative to the cutter 3, it is preferably arranged between two support plates 27 arranged on either side of the cutter 3. The retainer 18 is preferably loosely arranged between the cutter 3 and the one or more than one support plate 27 to prevent sideward pre-stress of the retainer 18. In this way, the compressibility of the retainer 18 is maintained and fully available for holding the pliable object(s) 2 in place at the interface 25 during cutting thereof.

The retainer 18 comprises a height H in a direction orthogonal to the outer surface of the contra-element 5, i.e. the contra-cylinder 8, and the support plate 27 extends along at least 50%, and preferably at least 60%, of the height H of the retainer 18 to provide sideward support to the retainer 18 when it is compressed due to contact with the contra-element 5. Figure 12 shows only a minimal sideward bulging out of the retainer 18 due to the sideward support provided by the support plates 27.

The embodiment described above may cut a sheet of paper of a typical standardized size of e.g. Ad, A3, A2, etc. into small ribbons having a width of e.g. 10 cm, i.e. the axial offset between to adjacent cutters 3. However, for some applications, it may be desired to further reduces said ribbons into smaller pieced by cutting the ribbons in a further step. For these applications, further preferred embodiments are proposed and shown in Figures 13-17. According to these further preferred embodiments, the contra-cylinder 8 comprises a further recess 28 that extends in a longitudinal direction of the contra-cylinder 8, and said cutting device | comprises a further rotatable member 29 comprising one or more than one longitudinal knife 30 that is arranged at an outer circumference 31 of the farther rotatable member 29, and that extends in a longitudinal direction of the further rotatable member 29. Similar reference numbers apply to the similar features throughout the different preferred embodiments.

In Figure 13, the further rotatable member 29 comprises four longitudinal knives

30. Thus, if the circumference of the further rotatable member 29 is 72 cm, it will cut of ribbons at a length of 18 cm. If the ribbons have been previously cut at a width of 10 cm each, a maximum total size of 10 x 18 cm is obtained, which may be conveniently handled for disposal or recycling, also with dust and waste extraction systems.

A rotation speed of the contra-cylinder 8 and a rotation speed of the further rotatable member 29 are preferably synchronized, to thereby guarantee that the further recess 28 and the longitudinal knife 30 remain aligned relative to each other.

In the further preferred embodiment shown in Figure 14, the further recess 28 of the contra-cylinder 8 and the longitudinal knife 30 of the further rotatable member 29 both describe an identical angle relative to the longitudinal direction of the contra-cylinder 8 to thereby define at least a part of a spiral shape. This angle is preferably in the range of 5° — 45°. The spiral shape may cause a more gradual load distribution, since a retainer 18 extending in radial direction outward relative to the outer circumference 31 of the further rotatable member 29 may cause a bump when arranged in the configuration shown in Figure 13.

An alternative way of preventing such bump loads is proposed in Figure 15, wherein a damping layer 32 is arranged around the outer circamference 31 of the further rotatable member 29. This damping layer 32 is arranged substantially flush with the retainer 33 of the further rotatable member 29, to thereby provide a smooth transition from the damping layer 32 IO onto the retainer 33 of the further rotatable member 29. It is mentioned here that the retainer 33 of the further rotatable member 29 functions exactly the same as the retainer 18 described for the first preferred embodiment when it holds the pliable objects 2 in place during cutting thereof.

The further preferred embodiment shown in Figure 16 integrates the retainer 33 and the damping layer 32 of the embodiment shown in Figure 15. In this case, a relative thick damping layer 32, for example having a radial thickness of 10 mm, may be applied. This damping layer 32 / retainer 33, is compressed at an interface where it contacts the contra-element 5, i.e. contra-cylinder 8.

An alternative rotatable member 29, that is not a cylinder, is shown in Figure 17.

This preferred embodiment further simplifies assembly of the rotatable member 29 itself, that now comprises a plurality of arms 34. In Figure 17, four such arms 34 are shown. Each of the arms 34 comprises a knife 30. A retainer 33 is arranged on opposite sides of said knife 30, and supported by support plates 27°, similar to the configuration of the cutter(s) described for the first embodiment. Due to the tapered shape of the recesses 28, cut objects are easily and automatically released.

Although they show preferred embodiments of the invention, the above described embodiments are intended only to illustrate the invention and not to limit in any way the scope of the invention. Accordingly, it should be understood that where features mentioned in the appended claims are followed by reference signs, such signs are included solely for the purpose of enhancing the intelligibility of the claims and are in no way limiting on the scope of the claims. Furthermore, it is particularly noted that the skilled person can combine technical measures of the different embodiments. The scope of protection is defined solely by the following claims.

Claims

ConclusiesConclusions

1. Snij-inrichting die is ingericht voor het snijden van een plooibaar object, zoals een afgesneden deel, omvattende: - een snijder omvattende een snijrand; - een tegen-element omvattende een uitsparing die is ingericht om de snijrand te ontvangen; en - waarbij de snijder en het contra-clement ten opzichte van elkaar beweegbaar zijn om zo op interactieve wijze het plooibare object te snijden.A cutting device adapted for cutting a pliable object, such as a cut-off part, comprising: - a cutter comprising a cutting edge; - a counter element comprising a recess adapted to receive the cutting edge; and - wherein the cutter and the counter-part are movable relative to each other so as to interactively cut the pliable object.

2. Snij-inrichting volgens conclusie 1, verder omvattende een houder die is ingericht om het plooibaar object tegen het contra-element te drukken en zo het plooibaar object tijdens het snijden daarvan op zijn plaats te houden.Cutting device according to claim 1, further comprising a holder which is adapted to press the pliable object against the counter-element and thus keep the pliable object in place during the cutting thereof.

3. Snij-inrichting volgens conclusie 2, waarbij de houder zich aan een eerste zijde naast de snijder uitstrekt.3. Cutting device according to claim 2, wherein the holder extends on a first side next to the cutter.

4. Snij-inrichting volgens conclusie 3, waarbij de houder zich verder aan een tweede zijde naast de snijder uitstrekt, waarbij de eerste zijde en de tweede zijde tegenovergelegen zijden ten opzichte van de snijrand van de snijder zijn.The cutting device of claim 3, wherein the holder further extends on a second side adjacent to the cutter, the first side and the second side being opposite sides to the cutting edge of the cutter.

5. Snij-inrichting volgens ten minste één van de conclusies 2-4, waarbij de houder compressibel is en is ingericht om bij een raakvlak tussen het contra-element en de houder te comprimeren en daardoor het plooibaar object tegen het contra-element te drukken.Cutting device according to at least one of claims 2-4, wherein the holder is compressible and is adapted to compress at an interface between the counter-element and the holder and thereby press the pliable object against the counter-element .

6. Snij-inrichting volgens ten minste één van de conclusies 2-5, waarbij: - een buitenoppervlak van het contra-element een vasthoudoppervak van het contra-element definieert; - een buitenoppervlak van de houder een vasthoudoppervlak van de houder definieert dat is ingericht om te comprimeren en te deformeren bij het raakvlak tussen het contra- element en de houder en zo het plooibaar object tijdens het snijden daarvan op zijn plaats te houden tussen het vasthoudoppervak van het contra-element en het vasthoudoppervak van de houder.Cutting device according to at least one of claims 2-5, wherein: - an outer surface of the counter-element defines a holding surface of the counter-element; - an outer surface of the container defines a holding surface of the container adapted to compress and deform at the interface between the counter-element and the container and thus hold the pliable object in place between the holding surface of the container during cutting thereof the counter element and the holding surface of the container.

7. Snij-inrichting volgens ten minste één van de conclusies 2-6, waarbij de houder zich verder dan de snijrand van de snijder naar het contra-element toe uitstrekt.Cutting device according to at least one of claims 2-6, wherein the holder extends further than the cutting edge of the cutter towards the counter element.

8. Snij-inrichting volgens ten minste één van de conclusies 5-7, waarbij de houder is aangebracht tussen de snijder en één of meer dan één steunplaat.Cutting device according to at least one of claims 5-7, wherein the holder is arranged between the cutter and one or more support plate.

9. Snij-inrichting volgens conclusie 8, waarbij de houder losjes tussen de snijder en de één of meer dan één steunplaat is aangebracht om een zijdelingse voorspanning van de houder te voorkomen.The cutting device of claim 8, wherein the container is loosely mounted between the cutter and the one or more support plate to prevent lateral biasing of the container.

10. Snij-inrichting volgens ten minste één van de conclusies 6-9, waarbij: - de houder een hoogte omvat die zich in een richting loodrecht op het buitenoppervlak van het contra-element uitstrekt; en - de steunplaat zich langs ten minste 50%, en bij voorkeur ten minste 60%, van de hoogte van de houder uitstrekt om zijdelingse steun aan de houder te verschaffen wanneer deze ten gevolge van contact met het contra-element wordt gecomprimeerd.Cutting device according to at least one of claims 6-9, wherein: - the holder has a height extending in a direction perpendicular to the outer surface of the counter element; and - the support plate extends along at least 50%, and preferably at least 60%, of the height of the container to provide lateral support to the container when it is compressed due to contact with the counter element.

11. Snij-inrichting volgens ten minste één van de voorgaande conclusies, waarbij: - de snijrand van de snijder een omtreks-snijrand is die aan een buitenomtrek van de snijder is aangebracht; - het contra-element een contra-cilinder is die de uitsparing aan een buitenomtrek daarvan omvat; en - de snijder en de contra-cilinder tegengesteld ten opzichte van elkaar roteerbaar zijn om het plooibaar object daartussen te snijden.Cutting device according to at least one of the preceding claims, wherein: - the cutting edge of the cutter is a circumferential cutting edge arranged on an outer circumference of the cutter; - the counter-element is a counter-cylinder which comprises the recess on an outer periphery thereof; and - the cutter and the counter-cylinder are rotatable in opposite directions to cut the pliable object therebetween.

12. Snij-inrichting volgens conclusie 11, waarbij de snijder een rond mes omvat.The cutting device of claim 11, wherein the cutter comprises a circular blade.

13. Snij-inrichting volgens conclusie 11 of 12, in afhankelijkheid van ten minste conclusie 6, waarbij: - een buitenoppervlak van de snijrand van de snijder een snijradius, “T.”, ten opzichte van een rotaticas van de snijder definieert; - het vasthoudoppervlak van de contra-cilinder wordt gedefinieerd door een buitenomtrek van de contra-cilinder; en - de snijradius “r,” en een radius van het vasthoudoppervlak van de contra-cilinder ten opzichte van een rotatieas van de contra-cilinder, “r..”, overlappen bij het raakvlak tussen de contra-cilinder en de houder om het toe te staan dat de snijrand zich tot in de uitsparing van de contra-cilinder uitstrekt.A cutting device according to claim 11 or 12, when dependent on at least claim 6, wherein: - an outer surface of the cutting edge of the cutter defines a cutting radius, "T.", with respect to a rotary axis of the cutter; - the holding surface of the counter-cylinder is defined by an outer circumference of the counter-cylinder; and - the cutting radius "r," and a radius of the retaining surface of the counter-cylinder with respect to an axis of rotation of the counter-cylinder, "r..", overlap at the interface between the counter-cylinder and the holder to form the allowing the cutting edge to extend into the recess of the counter-cylinder.

14. Snij-inrichting volgens ten minste één van de conclusies 11-13, waarbij: - de snijder is aangebracht op een roteerbare as die de rotatie-as daarvan definieert; - de contra-cilinder roteerbaar is rondom een rotatie-as daarvan; en - de rotatie-as van de snijder en de rotatie-as van de contra-cilinder zich op een radiale tussenafstand in hoofdzaak parallel ten opzichte van elkaar uitstrekken.Cutting device according to at least one of claims 11-13, wherein: - the cutter is mounted on a rotatable shaft defining its rotational axis; - the counter-cylinder is rotatable about an axis of rotation thereof; and - the axis of rotation of the cutter and the axis of rotation of the counter-cylinder extend substantially parallel to each other at a radial spacing.

15. Snij-inrichting volgens conclusie 14 in afhankelijkheid van ten minste conclusie 6, waarbij: - het vasthoudoppervlak van de houder, bij het raakvlak waar de houder maximaal is gecomprimeerd, ten opzichte van de rotatie-as van de houder die samenvalt met een rotatie-as van de snijder, een gecomprimeerde-houder-radius, “r,”, definieert; en - de radiale tussenafstand tussen de rotatie-as van de snijder en de rotatie-as van de contra-cilinder is ingesteld om te voldoen aan de conditie dat |r. Tel < 0.1 * 1, en bij voorkeur dat |r. ~ tel < 0.05 * rg.Cutting device according to claim 14 when dependent on at least claim 6, wherein: - the holding surface of the container, at the interface where the container is maximally compressed, with respect to the rotation axis of the container which coincides with a rotation -axis of the cutter, defines a compressed-holder radius, “r,”; and - the radial spacing between the axis of rotation of the cutter and the axis of rotation of the counter-cylinder is set to satisfy the condition that |r. Count < 0.1 * 1, and preferably that |r. ~ count < 0.05 * rg.

16. Snij-inrichting volgens conclusie 14 of 15, waarbij de radiale tussenafstand tussen de rotatie-as van de snijder en de rotatie-as van de contra-cilinder instelbaar is om het mogelijk te maken dat de snijder en de contra-cilinder tijdelijk ten behoeve van onderhoudswerkzaamheden op een afstand van elkaar kunnen worden gebracht.The cutting device of claim 14 or 15, wherein the radial spacing between the cutter rotational axis and the counter-cylinder rotational axis is adjustable to allow the cutter and the counter-cylinder to momentarily can be separated from each other for maintenance work.

17. Snij-inrichting volgens ten minste één van de conclusies 14-16, waarbij een rotatiesnelheid van de snijder en een rotatiesnelheid van de contra-cilinder gesynchroniseerd zijn.A cutting device according to at least one of claims 14-16, wherein a rotational speed of the cutter and a rotational speed of the counter-cylinder are synchronized.

18. Snij-inrichting volgens ten minste één van de conclusies 14-17, waarbij: - één of meer dan één verdere snijder aan de roteerbase as is aangebracht; en - de contra-cilinder één of meer dan één verdere uitsparing, die behoort bij de één of meer dan één verdere snijder, aan de buitenomtrek daarvan omvat.Cutting device according to at least one of claims 14-17, wherein: - one or more than one further cutter is arranged on the rotary base shaft; and - the counter-cylinder comprises one or more than one further recess, associated with the one or more than one further cutter, on the outer periphery thereof.

19. Snij-inrichting volgens conclusie 18 in afhankelijkheid van ten minste conclusie 11, waarbij: - de contra-cilinder een verdere uitsparing omvat die zich in een langsrichting van de contra-cilinder uitstrekt; en - de snij-inrichting een verder roteerbaar orgaan omvat dat een langsmes omvat dat aan een buitenomtrek van het verder roteerbaar orgaan is aangebracht en dat zich in een langrichting daarvan uitstrekt.19. Cutting device according to claim 18 when dependent on at least claim 11, wherein: - the counter-cylinder comprises a further recess which extends in a longitudinal direction of the counter-cylinder; and - the cutting device comprises a further rotatable member which comprises a longitudinal blade which is arranged on an outer circumference of the further rotatable member and which extends in a longitudinal direction thereof.

20. Snij-inrichting volgens conclusie 19, waarbij de verdere uitsparing van de contra-cilinder en het langsmes van het verder roteerbaar orgaan beiden een gelijke hoek ten opzichte van de langsrichting van de contra-cilinder beschrijven en daardoor ten minste een deel van een spiraalvorm definiëren.A cutting device according to claim 19, wherein the further recess of the counter-cylinder and the longitudinal blade of the further rotatable member both describe an equal angle with respect to the longitudinal direction of the counter-cylinder and thereby at least part of a spiral shape. to define.

21. Snij-inrichting volgens conclusie 20, waarbij de hoek zich bevindt in het bereik van 5° - 45°.The cutting device of claim 20, wherein the angle is in the range of 5°-45°.

22. Snij-inrichting volgens één of meer dan één van de conclusies 19-21, waarbij een rotatiesnelheid van de contra-cilinder en een rotatie-snelheid van het verder roteerbaar orgaan zijn gesynchroniseerd.22. Cutting device according to one or more of the claims 19-21, wherein a rotational speed of the counter-cylinder and a rotational speed of the further rotatable member are synchronized.