EP3202564B1 - Device and method for rapid production of a three-dimensional packaging product - Google Patents

Description

The invention relates to a device for the machine production of a three-dimensional packaging product from a section of a single-ply or multi-ply paper web that is shaped in a predetermined manner.

In the case of a device of the generic type, as for example from DE 10 2005 053 319 A1 is known, the paper web is peeled off from a paper web source, such as a rolled paper web. In this case, the paper web is reshaped into a three-dimensional paper web section, for example by pulling the paper web off the inside of a roll, as a result of which a spiral tube is formed. The three-dimensional paper web section can additionally be further preformed by means of a deformation device which is formed by a pair of opposing embossing wheels. The embossing teeth of the embossing wheel work a sequence of embossing valleys and peaks essentially in the central area of the spiral tube, so that the paper web section has two cushion cavities lying on the left and right side next to the longitudinally extending embossing deformation zone. A knife for tearing off the preformed paper web section is arranged on a tubular housing discharge opening of the production device. The knife is fixedly attached to the tubular inside of the housing of the manufacturing device.

So that an operator can create the prefabricated packaging product in a predetermined length, the conveyor drive device formed by the embossing gears must be stopped in order to properly carry out the tear-off process by the operator. In this way, a discontinuous method for producing pre-assembled packaging products is provided.

US 2003/0087741 A1 discloses a method and a system for producing packaging material.

US2010 / 0041534A1 discloses a cushioning conversion system.

The object of the invention is to overcome the disadvantages of the prior art, in particular to provide a device for the machine production of a three-dimensional packaging product with which a fast and qualitatively equivalent packaging product can be produced quickly and economically.

This object is achieved by the features of claim 1. According to this, a device is provided for the machine production of a three-dimensional packaging product from a section of a single-ply or multi-ply paper web that has been shaped in a predetermined manner. Waste paper, in particular, can be used for the paper web, but due to its composition it forms an inhomogeneous structure and does not have a very uniform deformation behavior. The paper web can be pulled off a paper web roll or a paper web leporello stack. From the paper web source, the paper web passes into the manufacturing device. The production device comprises a preforming station which preforms the paper web to form the three-dimensional packaging product with a crumple cavity extending in the web direction. The preform is formed in that the paper web can be pulled off from the inside of a paper web roll, whereby a spiral-shaped paper tube is formed. In the

In the spiral shape of the paper tube, adjacent spiral sections partially overlap, the degree of overlap depending on how great the pull-off force is with which the paper web is pulled off the inside of the paper web roll. According to the invention, the paper web is preformed in the preforming station so that a two-dimensional paper web section can be pulled off a paper web source and at least one longitudinal edge strip of the

Paper web section can be turned over or rolled up to a central region of the paper web section, with the central region then being able to be plastically deformed by means of a pair of embossing wheels, so that a sequence of embossing valleys and embossing peaks can also be introduced in the longitudinal direction of the paper web section. In the preforming station, the paper web is thus brought into the three-dimensional cushion shape which has at least one crumple cavity in order to provide the desired cushioning and cushioning function.

The preform station is followed by a separation station in the conveying direction of the paper web, which separates the paper web section from the preformed leading paper web to the desired length of the packaging product. According to the invention, the severing station has a rotary cutter, the cutting edge of which lies transversely to the conveying direction of the paper web section. The cutting edge extends transversely to the conveying direction of the paper web. The cutting edge extends especially straight forward. The cutting edge lies parallel to the axis of rotation of the rotary cutter and rotates on a cylindrical orbit, which the conveying path of the paper web crosses essentially tangentially or slightly according to the edges, so that the paper web is at the point of contact of the cutting edge at the tangential point or in the secant area is cut off with one cut. The peripheral speed of the cutting edge during the cut preferably corresponds essentially to the conveying speed of the paper web, is slightly higher or slightly lower than the paper web conveying speed. The cutting edge is preferably perpendicular to the conveying direction, the paper web section leaving the preforming station in the conveying direction. A particularly circular orbit of the cutting edge is defined in such a way that the cutting edge crosses a conveying path of the paper web section as it rotates and thus completely intersects the paper web section in the transverse direction.

The cutting edge preferably runs in a circle around an axis of rotation of the rotary cutter, which is essentially parallel to the cutting edge and / or perpendicular to the conveying direction.

The length of the cutting edge preferably corresponds at least to the width of the conveying path and is in particular longer than the width of the conveying path, so that by engaging the cutting edge in the conveying path, a complete severing of the paper web can be ensured with simultaneous movement of the paper web. The cutting edge can be arranged on an elongated, in particular rectangular, cutting blade.

The entry of the cutting edge into the conveying path as well as the exit from it when crossing the paper web section should be realized in the course of a few degrees of rotary movement of the cutting edge, so that almost no tangential contact of the conveying path is made by the cutting edge, but an intersection. In a preferred embodiment of the invention, a drive for conveying the paper web section and a drive for the rotary cutter are provided. The drive for conveying the paper web section can be formed, for example, by a pair of embossing wheels, the embossing teeth of which plastically deform the paper web section prior to the engagement of the rotary cutter in order to increase the rigidity of the packaging product. The embossing teeth form a sequence of embossed valleys and mountains that define a deformation zone of the packaging product. The deformation zone extends continuously in the longitudinal direction essentially in the central region of the packaging product from a leading short edge to the trailing short edge.

The conveying speed is mainly achieved by the peripheral speed of the embossing wheels. The conveyor drive and the drive of the rotary cutter are coordinated with one another in such a way that the conveyor movement of the paper web section and the rotary movement of the cutting edge run continuously without interruption. According to the invention, the deformation process of the embossing wheels, that is to say the conveyance of the preformed paper web section through the production device, can take place continuously and without interruption, even if the paper web section is cut off by the rotary cutter. The peripheral speed of the cutting edge is preferably adapted to the peripheral speed of the embossing wheels in such a way that the conveying speed of the paper web section through the production device is essentially equal to the peripheral speed of the cutting edge.

In particular, the drives can be controlled in such a way that the conveying speed is slightly lower than the circumferential speed, in particular of the outer edge of the cutter, when the paper web section is in cutting engagement. This ensures that, at least during the cutting process, the paper web section is slightly tensioned in order to facilitate cutting, and that after cutting the separated paper web section leaves the production device faster than the next paper web section enters the rotary cutter.

In a preferred embodiment of the invention, the rotary cutter has a cutting pad which also executes a rotary movement, but on an orbital mating path that rotates in the opposite direction to the orbit of the cutting edges. The rotary movement of the cutting pad is synchronized with the rotary movement of the cutting edge in such a way that at the point in time at which the conveying path is crossed by the cutting edge, the cutting pad is also directly opposite the cutting edge and engages with the cutting edge. When the cutting edge engages in the cutting pad, the edge of the cutting edge protrudes into the cutting pad. In this way it is ensured that the paper web section lying on the cutting pad, which is formed by several paper layers, is completely and cleanly severed.

The cushion is preferably formed from an elastic rubber material, which withstands the penetration of the sharp cutting edge, preferably without injury. However, other soft and flexible materials can also be used for the cutting pad. The cutting pad must, however, be able to generate opposing forces for the complete severing of the paper web section by means of the cutting edge. The cutting edge is preferably serrated.

In a preferred embodiment of the invention, the rotary cutter has a driver which, in particular, describes the same orbit as the cutting edge, the driver coming into driving engagement with the paper web section before the cutting engagement of the cutting edge. The driver can be connected upstream of the cutting edge in its direction of movement in such a way that a section of the preformed paper web located downstream from the driver is tensioned, with the driver in particular maintaining the tensile stress until the cutting edge separates the paper web section.

The driver or a driver counterpart can also be formed on the cutting pad, among other things.

It is clear that a further driver can also be arranged in such a way that it comes into driving engagement with the paper web section after the cutting engagement of the cutting edge. In this way it is ensured that the following paper web section arrives in a guided manner in the severing station, the risk of incorrect conveyance in the severing station being reduced.

In a preferred embodiment of the invention, the driver is formed by a perforation and / or embossing station. In a preferred embodiment of the perforation and / or embossing station, a punch is arranged on a carrier of the cutting edge, while a punch receiving part is provided on a carrier of the cutting cushion.

In a further development of the invention, a circumferential speed, in particular of the outer edge of the cutting edge, is greater than the conveying speed of the paper web section, at least precisely during the severing process. The higher peripheral speed of the blade has the effect that, after the cutting engagement, the severed paper web section is ejected from an intersection area of the cutter with the conveying path of the paper web section away from the subsequent paper web section before the subsequent paper web section reaches the severing area.

In a preferred embodiment of the invention, the rotary cutter is combined with a perforation and / or embossing station which carries out the same rotary movement as the cutter and is at least adjacent to a severing edge of the packaging product introduces a perforation and / or embossing point extending through overlapping paper web section layers.

In a further development of the invention, the perforation and / or embossing station is a punching station. In addition, the perforation and / or embossing station can include one or more punching dies and one or more punching receptacles. The punch is assigned to a respective punch holder, the punch and the respective punch holder being rotatably mounted in such a way that the punch rotates into the respective punch holder like a gear wheel and leaves the punch holder unscrewing to form the respective perforation. The driver identified above is preferably formed by the arrangement of the punch holder and punch.

In a further development of the invention, several pairs of a punch and an associated punch holder are mounted on two shafts, in particular the axial spacings of the pairs being equal and / or several pairs perforating at the same time. It is clear that a shaft carrying a punch and / or a punch receiver can also carry the cutting edge or the cutting pad. Preferably, all of the punches are arranged on one shaft, while the punch receptacles are fastened on the opposite shaft.

In a preferred embodiment of the invention, one and the same drive is provided for the rotary cutter and the perforation and / or embossing station so that the rotary cutter rotates at the same angular speed as the perforation and / or embossing station. At least one embossing or punching die or at least one embossing or punching receptacle can be arranged upstream and downstream of the cutting edge of the rotary cutter in the direction of rotation, around at least one first embossing or perforation at the cutting end of the packaging product leading in the conveying direction of the paper web and optionally at least one to introduce a second embossing or perforation at the cutting end of a subsequent packaging product that traces in the conveying direction of the paper web.

The invention also relates to a method for the machine production of a three-dimensional packaging product from a section of a single-layer or multi-layer paper web that is deformed in a predetermined manner. First, the paper web is pulled from a paper web source and fed to a forming station as a two-dimensional product. There the paper web is preformed into a three-dimensional packaging product, see above that a crumple cavity extending in the web direction is formed. The preformed paper web section is then fed to a severing station in which the paper web section is severed to the desired length of the packaging product. According to the invention, the paper web section is separated from the paper web without having to interrupt the conveyance of the paper web section to the preforming station. Preferably, it is not even necessary to reduce the conveying speed to the preforming station and within the preforming station. The conveying speed can be kept constant throughout the entire production device.

It should be clear that the method according to the invention can be designed in accordance with the mode of operation of the device according to the invention. In addition, the device according to the invention can be designed in such a way that the method according to the invention can be carried out.

Further features and aspects of the invention are specified in the subclaims.

Figur 1

eine perspektivische Ansicht eines Teils einer erfindungsgemäßen Fertigungsvorrichtung;

Figur 2

eine Draufsicht auf das Teil der erfindungsgemäße Fertigungsvorrichtung nach Figur 1;

Figur 3

eine teilweise aufgebrochene Seitenansicht des Teils der erfindungsgemäßen Fertigungsvorrichtung nach den Figuren 1 und 2;

Figur 4a bis 4e

mehrere vergrößerte Seitenansichten einer Stanz- und Abschneidstation der erfindungsgemäßen Fertigungsvorrichtung nach den Figuren 1 bis 3 in unterschiedlichen Betriebspositionen; und

Figur 5

eine perspektivische Ansicht eines erfindungsgemäß hergestellten Verpackungserzeugnisses.

In den Figuren 1 bis 3 ist die erfindungsgemäße Vorrichtung zum maschinellen Fertigen des in der Figur 5 gezeigten erfindungsgemäßen Verpackungserzeugnisses zum Teil dargestellt. Die erfindungsgemäße Fertigungsvorrichtung ist im allgemeinen mit der Bezugsziffer 101 versehen, wobei eine Umschlagstation nicht dargestellt ist, an der die Längsrandstreifen 13, 15 des von der Papierbahnrolle abgewickelten Papierbahnabschnitts über den sich in Längsrichtung L erstreckenden Mittelbereich 17 umgelegt werden, so dass sich die übereinander liegenden Papierbahnlagen verdoppeln. Es sei klar, dass die Längsrandstreifen 13, 15 entweder eingerollt sind oder der freie Längsrand auf dem Mittelbereich 17 aufliegt. An der nicht dargestellten Umschlagstation, die beispielsweise in Form eines in Förderrichtung (entspricht der Längsrichtung L) sich verjüngenden flachen Trichters gebildet sein kann, schließt eine Befestigungs- und/oder Deformationsstation 103 an, deren Hauptbestandteil durch ein Paar sich gegenüber liegender Prägeräder 105, 107 beispielsweise aus Polyethylen gebildet ist. Die Prägeräder 105, 107 sind derart gelagert, dass deren Zähne zahnradartig ineinander greifen, so dass der dazwischen gelangende Papierbahnabschnitt unter Ausbildung von Prägebergen und Prägetälern deformiert wird.Further properties, advantages and features of the invention will become clear from the following description of the preferred embodiments of the invention with reference to the accompanying drawings, in which:

Figure 1

a perspective view of part of a manufacturing device according to the invention;

Figure 2

a plan view of the part of the manufacturing device according to the invention Figure 1 ;

Figure 3

a partially broken side view of the part of the manufacturing device according to the invention according to the Figures 1 and 2 ;

Figures 4a to 4e

several enlarged side views of a punching and cutting station of the manufacturing device according to the invention according to the Figures 1 to 3 in different operating positions; and

Figure 5

a perspective view of a packaging product produced according to the invention.

In the Figures 1 to 3 is the inventive device for the machine production of the Figure 5 shown packaging product according to the invention is shown in part. The production device according to the invention is generally provided with the reference numeral 101, a transfer station not being shown at which the longitudinal edge strips 13, 15 of the paper web section unwound from the paper web roll are folded over the central region 17 extending in the longitudinal direction L so that the one above the other Double the paper web layers. It is clear that the longitudinal edge strips 13, 15 are either rolled up or the free longitudinal edge rests on the central region 17. A fastening and / or deformation station 103, the main component of which consists of a pair of opposing embossing wheels 105, 107, is attached to the transfer station (not shown), which can be formed, for example, in the form of a flat funnel tapering in the conveying direction (corresponds to the longitudinal direction L) is formed for example from polyethylene. The embossing wheels 105, 107 are mounted in such a way that their teeth mesh with one another in the manner of a toothed wheel, so that the paper web section that comes in between is deformed with the formation of embossing peaks and embossing valleys.

The embossing wheels 105, 107 are mounted on a frame (not shown in more detail), the bearing axes extending perpendicular to the conveying direction F, so that the embossing wheels 105, 107 run against one another in the conveying direction F like a toothed wheel.

Leaving the transfer station (not shown), the reshaped paper web section (not shown) arrives at the deformation station 103, to be precise via a housing shaft 111 which defines a rectangular access opening 113. The housing shaft 111 has a correspondingly dimensioned passage 115 on the side of the stamping wheel wall, through which the respective stamping wheel 105, 107 can grip. The dimensions of the passage 115 are adapted to the dimensions of the penetrating stamping wheel 105, 107 in such a way that a gap of a few millimeters is formed. In this way, unwanted paper web jams at the deformation station 103 are avoided.

The housing shaft 111 defines an inner channel 121 which has no protrusions, so that the rectangular opening cross-section at 113 continues continuously up to a station exit 123, at which the housing shaft has outwardly curved end edges. A perforation station 131, which is essentially formed from a rotating perforation punch arrangement 133 and a receiving arrangement 135, is then arranged in the conveying direction F.

The perforation punch arrangement 133 and the receiving arrangement 135 are fastened to drive shafts 137, 141 extending parallel to the bearing axes of the gear wheels 105, 107. The drive shafts 137, 141 are driven independently of one another via a drive pinion 143 and 145, respectively. The drives are synchronized in such a way that the perforation punch arrangement 133 comes into engagement with the receiving arrangement 135 with an exact angular position.

Both the perforation stamp arrangement 133 and the receiving arrangement 135 each have five working disks 151 and 153, which are offset in the transverse direction Q perpendicular to the conveying direction F, so that in each case one stamping disk (151) lies between two receiving disks (153) and vice versa.

In the Figure 3 Counterclockwise rotating punch disc (151) of the perforation punch arrangement 133 comprises two perforation noses 155, 157 which are arranged at a circumferential distance and are rounded radially on the outside and have cutting edges running in the circumferential direction.

The receiving disks (153) of the receiving arrangement 135 carry two receiving plates 161 and 163 extending in the transverse direction, the radial outer edge 165 and 167 of which, running in the transverse direction Q, with recesses 179 ( Figure 1 ) is provided, in which the perforation noses 155 and 157 engage to perforate the paper web section (not shown).

A rotary cutter 173 is integrated in the perforation station 131, it being clear that the rotary cutter 173 can also be implemented separately without the respective components of the perforation station 131. The rotary cutter 173 serves to cut the paper web section from the paper web and to form its trailing short edge 7, 11. The rotary cutter 173 comprises a cutting knife which is fastened to the drive shaft 137 and has a cutting edge 175 protruding between the perforation noses 155, 157. The cutting edge 175 extends transversely, in particular perpendicular, and / or in a straight line to the conveying direction. The cutting edge 175 preferably protrudes approximately as far in the radial direction as the perforation lugs 155, 157.

Furthermore, the rotary cutter 173 has a soft cutting pad 177, which completely fills the space between the receiving plates 161, 163. The radial outside of the cutting pad 177 essentially ends at the radial outside of the radial outside edges 165, 167 of the perforation receiving plates 161, 163.

The perforation station 131 and the rotary cutter 173 have the following function:
As in the drawing sequence of the Figure 4a to e As can be seen, the punch assembly 133 rotates clockwise while the receptacle assembly 135 is rotated counterclockwise. As in Figure 4a As can be seen, the working disks 151, 153, which have recesses to reduce weight, are designed in a straight line radially on the inside to form a through-channel 181. In the Figure 4a the through-channel 181 is shown with its greatest clear width.

The in Figure 4a The straight disk edge 183, 185 lying radially on the inside lies opposite a curved disk edge 187, 191, with further rotation of the respective arrangement (starting from Figure 4a ) the clear width of the passage 181 decreases steadily. In Figure 4b the smallest clear width of the through-channel 181 up to that point can be seen when the curved edge sections 187, 191 lie opposite one another for the first time during the rotary movement.

The narrowing of the through-channel 181 causes the disks 153, 156 to engage with the paper web section, with further rotation to the position according to FIG Figure 4c entrainment forces are communicated to the paper web section in the conveying direction F.

The circumferential speed of the disks 153, 156 at the disk edge 187, 191 is selected such that the entrainment speed is slightly greater than or equal to the conveying speed of the conveying speed of the paper web section determined by the gears 105, 107.

As in the Figures 4c As can be seen, the leading perforation nose 155 first engages in the recess 171 of the perforation receiving plate 161. The row 25 of perforation slots 27 is thus worked into the paper web section that has just passed through. At the same time, the paper web section is due to the engagement of the perforation nose 155 in the perforation receptacle 171 entrained, so that the paper web section is placed under tension before the cutting edge 175 comes into engagement with the paper section.

When the respective arrangements 133, 135 are rotated further, the blade 175 engages in the cutting pad 177 and completely briefly closes the passage 181, whereby the paper web section which has just passed the rotary cutter 173 is separated from the paper web. The trailing perforation nose 157 enters the respective recess 179 of the receiving plate 161, 163, as a result of which the row 25 of perforations 27 is already incorporated in the area in the leading short edge 7, 11 of the packaging product 1.

Due to the engagement of the perforation lugs 155, 157 in the respective receptacle 171 of the perforation receiving plate 161 and the engagement of the cutting edge 175 in the cutting cushion 175, the paper web section just cut is removed from the machine by means of a higher peripheral speed of the perforation station and of the rotary cutter compared to the conveying speed of the embossing gears 105, 107 Through channel 181 ejected.

As in Figure 4e As can be seen, the radius of the disks 153, 156 decreases continuously from the perforation noses or the perforation receptacles, so that during the rotary movement of the working disks 151 the distance between a guide funnel 193 following the perforation station and the rotary cutter 173 in the conveying direction F decreases. The guide funnel 193, which tapers in the conveying direction F, serves to reliably guide the cut-off paper web section, which now forms the finished packaging product, to the output 195 of the production device 101.

The manufacturing device 101 can have a control and / or regulating device, not shown, which synchronizes the rotary movements of the deformation station 103 and the perforation station. For this purpose, for example, a speed sensor can be provided both at the deformation station and at the perforation station. The conveying speed should be constant during the entire conveying, deformation and separation process. The peripheral speed of the perforation punch assembly 133 and the receiving assembly 135 can vary, but be slightly greater than the conveying speed during the cutting process.

In Figure 5 an embodiment of the prefabricated packaging product according to the invention is generally provided with the reference number 1. The packaging product 1 consists exclusively of paper, in particular waste paper, and is made into a predetermined cushion shape. The packaging product 1 has two opposite, more or less rectilinear long sides 3, 5 extending along the web or longitudinal direction L and two diametrically opposite short sides 7, 11 which are essentially perpendicular to the longitudinal direction L. To manufacture the packaging product 1 according to the invention, a longitudinal edge strip 13, 15 is turned over to a central region 17 extending in the longitudinal direction L in a first reshaping step, which results in random folds near the long side 3, 5.

The longitudinal edge strip 13, 15 can either be rolled up or simply turned over in such a way that the longitudinal edge lies freely on the central region 17. After the turning-over process, the turned-over paper web section arrives at an embossing station in which a sequence of embossing valleys and embossing mountains is embossed in the course of the central region 17. In this way, on the one hand, the packaging product 1 is stiffened and, on the other hand, unrolled longitudinal edges that are exposed under certain circumstances are embossed to fasten the central area. After the embossing along the central region 17, lateral cavity cushions 21, 23 are created which extend in the longitudinal direction L. The cavity cushions 21, 23 provide the cushioning property of the packaging product 1.

In order to prevent the packaging product 1 from unfolding starting from the short sides 7, 11, a row 25 of slot perforations 27 is provided adjacent to the respective short edge 7, 11, essentially at a constant distance therefrom. The slot perforation 27 forms slot edges which interlock with one another under the different paper web section layers.

List of reference symbols

1

Packaging product

3.5

Long sides

7, 11

Short pages

13, 15

Longitudinal margins

17th

Midrange

19th

Attachment or deformation zone

21, 23

Cavity pad

25, 33

line

27

Slot perforations

101

Manufacturing device

103

Fastening and / or deformation station

105, 107

Embossing wheels

111

Housing slot

113

Access opening

115

Passage

121

Inner channel

131

Perforation station

133

Perforation punch assembly

135

Recording arrangement

137, 141

Drive shafts

143, 145

Drive pinion

151, 153

Working disks

155, 157

Perforation noses

161, 163

Mounting plates

165, 167

radial outer edge

173

Rotary cutter

175

Cutting edge

177

Cutting pad

179

Recesses

181

Passage channel

183, 185, 187, 191

Pane edge

193

Leadership funnel

195

exit

F.

Conveying direction

L.

Web or length direction

Q

Transverse direction

Claims (15)

1. Device for the production by machine of a three dimensional packaging product (1) from a section of a single or multiple layer paper web reshaped in a predetermined manner, comprising a pre-shaping station which can reshape the paper web into a three-dimensional packaging product (1) with at least one hollow crumple space extending in the direction of the web, and a separating station which adjoins the pre-shaping station in the direction of travel of the paper web and can cut a paper web section to the required length of the packaging product (1) from the pre-shaped paper web, wherein the pre-shaping is formed in that the paper web can be drawn from the inside of a paper web roll whereby a spiral paper tube is formed or in that the paper web can be pre-shaped in that a two dimensional paper web section can be drawn from a paper web source in form of a paper web roll or a zig-zag folded paper web stack and at least one longitudinal edge strip can be folded or rolled up characterised in that subsequently the middle section can be deformed plastically by a pair of embossing wheels in a manner that in addition a sequence of embossing valleys and embossing mountains can be produced in longitudinal direction of the paper web section and that the separating station comprises a rotary cutter (173), the blade (175) of which is positioned transverse to the direction of travel (F) in which the paper web section leaves the pre-shaping station, wherein a rotational path of the blade (175) is arranged in such a way that during rotation the blade crosses a travel path of the paper web section.
2. Device according to claim 1 characterized in that the pre-shaping station is formed as a flat funnel tapering in the direction of travel (F).
3. Device according to claim 1 or 2 characterised in that a drive for the rotary cutter (173) is adjusted independently from a drive for the travel of the paper web section in such a way that the blade (175) separates the paper web section during the interruption-free, continuous travel of the paper web section.
4. Device according to claim 1, 2 or 3 characterised in that the blade (175) is assigned to a cutting pad (177) which particularly describes a rotational path contrary to the rotational movement of the blade (175), wherein the rotary movements of the blade (175) and the cutting pad (177) are matched in such a way that on separating the paper web section the blade (175) engages with the cutting pad (177).
5. Device according to one of the preceding claims characterised in that the rotary cutter (173) comprises a drive catch, which particularly describes the same rotational path as the blade (175), wherein the drive catch comes into a driving engagement with the paper web section before the cutting engagement of the blade (175), so that particularly a partial section of the pre-shaped paper web section upstream of the drive catch is pre-tensioned, wherein the drive catch preferably maintains the tension until the blade (175) separates the paper web section.
6. Device according to one of the preceding claims characterised in that at least during the separating procedure the circumferential speed of the blade (175) is greater than the speed of travel of the paper web section so that, in particular after the cutting engagement, the separated paper web section is ejected from an area in which the blade (175) crosses the travel path of the paper web section.
7. Device according one of the preceding claims characterized in that the rotary cutter (173) is combined with a perforation and/or embossing station (131) which carries out the same rotational movement as the blade (175) and produces a perforation and/or embossing point through overlapping paper web section layers adjacent to the separation edge of the packaging product.
8. Device according to claim 7 characterised in that the perforation and/or embossing station (131) is a punching station and/or comprises one or more punches as well as one or more dies, wherein the punch is assigned to a respective die and/or wherein the punch and the respective die are rotationally mounted in such a way that the punch rotates into the respective die in the manner of a toothed wheel and rotates out of the die in order to form the respective perforation.
9. Device according to claim 8 characterised in that several pairs of a punch and a corresponding die are arranged on two shafts, wherein in particular the axial distances between the pairs are of equal size and/or several pairs perforate simultaneously.
10. Device according to one of the preceding claims 7 to 9 characterised in that the rotatory cutter (173) is rotated at the same angular velocity as the perforation and/or embossing station (131), wherein in particular with regard to the blade (175) of the rotary cutter (173) in the direction of rotation at least one punch or at least one die is arranged in a leading and trailing manner, respectively, in order to produce at least a first perforation on the cutting end of the packaging product (1) which is leading in the direction of travel (F) of the paper web and, if required, at least one second perforation at the incision end of a following packaging product (1) which is trailing in the direction of travel (F) of the paper web.
11. Device according to one of the preceding claims characterised in that the pre-shaping station reshapes the paper web into a three-dimensional packaging product (1) with two lateral hollow crumple spaces extending in the direction of the web.
12. Device according to one of the preceding claims characterised in that the pre-shaping station comprises a folding station that folds at least one, particularly both longitudinal edge strips towards the middle section and/or an embossing station, particularly arranged downstream of the folding station, with a pair of embossing wheels that produces a sequence of embossing valleys and embossing mountains in the middle section of the paper web section.
13. Device according to one of the preceding claims characterised in that the pre-shaping station comprises a folding section that folds at least one, particularly both longitudinal edge strips towards the middle section and a downstream mounting and/or deformation station (103), wherein the paper web section travels from the folding station through a housing shaft (111) into the mounting and/or deformation station (103), that comprises an accordingly dimensioned passage (115) on the wall adjacent to the embossing wheels, through which the respective embossing wheel can engage.
14. Device according to claim 8 characterised in that the dimension of the passage (115) is adapted to the dimension of the pair of embossing wheels engaging through it in such a way that a gap of a few millimeters is formed.
15. Method for the production by machine of a three-dimensional packaging product from a section of a single or multiple layer paper web reshaped in a predetermined manner, wherein the paper web is drawn from a paper web source in form of a paper web roll or a zig-zag folded paper web stack and the paper web is reshaped into a three-dimensional packaging product in order to form a hollow crumple space extending in the direction of the web and the pre-shaped paper web section is cut from the pre-shaped paper web to the required length of the packaging product, wherein the paper web section is separated from the paper web without interrupting the travel of the paper web during reshaping, characterised in that the paper web is pre-shaped in that the paper web is drawn from the inside of paper web roll, whereby a spiral paper tube is formed, or that the paper web is pre-shaped in that a two-dimensional paper web section is drawn from a paper web source and at least one longitudinal edge strip is folded or rolled up towards the middle section of the paper web section and that subsequently the middle section is plastically deformed in such a way that in addition a sequence of embossing valleys and embossing mountains is produced in longitudinal direction of the paper web section.

Images