DE102021125142A1 - Forming station with adjustable boundary wall and/or with folding cheeks - Google Patents

Abstract

The invention relates to a device for mechanically producing a three-dimensional packaging product from a web-shaped starting material, in particular paper starting material, the device comprising a forming station with a convergence channel for transverse compression, in particular folding or rolling, of the starting material, with a boundary wall of the convergence channel between an operating position in which the starting material is transversely compressed as it is conveyed through, and can be adjusted, in particular pivoted, to a release position in which access to the convergence channel is released, the forming station having a conveyor device for removing the starting material from a starting material supply that can be arranged upstream of the forming station, the conveyor device having at least one has drive means rotatably mounted on the adjustable boundary wall, which in the operating position of the adjustable boundary wall can be moved transversely to the conveying direction, in particular in the direction of the thickness of the starting material.

Description

The present invention relates to a device for mechanically producing a three-dimensional packaging product from a web-like starting material, in particular paper starting material. Furthermore, the invention relates to a system with a device according to the invention and a web-shaped starting material. The invention also relates to a packaging product produced by means of a device or a system according to the invention.

Generic packaging products are flexible and shock absorbing and are used to be placed in shipping crates or cartons to protect items in transit. A packaging product can therefore also be referred to as a shock-absorbing filling material product. A three-dimensional packaging product is formed by deforming a two-dimensional starting material in a predetermined manner to produce the three-dimensional packaging product indefinitely.

Paper material, in particular, is used for the starting material in web form. Waste paper is being used more and more frequently for the paper material, primarily for ecological reasons. However, due to its inhomogeneity, it is difficult to reshape, especially if the three-dimensional packaging product can always be produced uniformly and as simply and economically as possible. The starting material in web form—which can also be referred to as packaging material web—can be made from paper, such as recycled paper, in particular waste paper and/or 100% recyclable paper, which can be produced without chemical ingredients. Recycled paper is, in particular, paper material with a small proportion (less than 50%) of paper material containing fresh fibers. For example, paper materials containing 70% to 100% waste paper are used. The recycled paper within the meaning of this invention can be paper material which can have a tensile strength index in the machine direction of at most 90 Nm/g, preferably a tensile strength of 15 Nm/g to 60 Nm/g, and a tensile strength index in the cross-machine direction of at most 60 Nm/g. g, preferably a tensile strength of 5 Nm/g to 40 Nm/g. A standard DIN EN ISO 1924-2 or DIN EN ISO 1924-3 can be used to determine the tensile strength or the tensile strength index. Additionally or alternatively, a recycled paper property or waste paper property can be characterized by the so-called bursting resistance. A material in this sense is recycled paper with a burst index of at most 3.0 kPa*m^2/g, preferably with a burst index of 0.8 kPa*m^2/g to 2.5 kPa*m^2/g. The DIN EN ISO 2758 standard is used to determine the bursting index. Furthermore, the packaging material has a mass per unit area of in particular 40 g/m2 to a maximum of 140 g/m2. The starting material can be in the form of a roll of web material or a zigzag-folded stack of packaging material, which is also referred to as a leporello stack.

An example of a generic packaging product is in EP 2 711 167 B1 specified. In a first forming step according to EP 2 711 167 B1 the longitudinal edge strips of the web of material are essentially loosely rolled inwards. In a central connecting section or middle area, which connects the two rolled-up longitudinal edge strips of the paper web section and which each create a crumple cavity, an embossing is introduced to stiffen and fix the longitudinal edge strips of the packaging product, which is formed by a sequence of valley and elevation sections. In this way, the laterally rolled cushion section, which delimits a cavity to form a crumple zone, should be significantly thicker than the embossed central area. In the embossed deformation or attachment zone in the central area, perforations can also be introduced, which cause the superimposed web layers to hook into one another.

A generic device for mechanically producing a three-dimensional packaging product is from GB 2 549 257 A known. This includes a forming station with a narrowing channel in the conveying direction for transverse compression of web-shaped starting material. Furthermore, a conveying and embossing station downstream of the forming station is provided, which pulls the starting material from a material web supply through the forming station and embosses the material transversely compressed by the forming station. To clear jams, a cover part of the conveying and embossing station and a cover part of the preforming station should be pivotable in opposite directions. In order to support the drawing in of the starting material, it should also be possible to provide a further conveyor device in the preforming station.

It has turned out, however, that the additional conveying device installed in the forming station GB 2 549 257 A does not allow reliable feeding of the starting material from the material web supply. In particular, when the starting material is pulled off the outside of a roll of web material, in particular a roll of web material lying flat, the combination of the two in GB 2 549 257 A conveyors used as not sufficient for a reliable deduction of the starting material proved. In addition, the threading of starting material into the device in particular has proven itself GB 2 549 257 A and clearing jams proved to be complicated. Another disadvantage consists in the large dimensions of the device GB 2 549 257 . Furthermore, the device tends GB 2 549 257 A for congestion.

The inventors of the present invention have also recognized that there is a need for small packaging products, i.e. packaging products that are reduced in their width dimension transversely to the longitudinal extent, because these can be integrated more easily in narrow volumes to be padded in packaging cartons or bags. In the past, packaging products of the generic form with a corrugated, longitudinally extending embossing section and laterally symmetrically adjoining, tubular crumple cavities, which were produced by integrally forming a web-shaped starting material, were always produced to a fairly uniform size, with the constraints of the starting material as well as the devices provided for the production did not allow a width of less than 15 cm. The inventors of the present invention have now succeeded in creating devices with which packaging products of the above-mentioned structure can be produced with a width of less than 15 cm. In addition, it has been possible to significantly reduce the dimensions of the device compared to previous devices.

The device can be omitted in particular because of the complicated structure with two embossing zones and two covers of the preforming station and embossing station that can be pivoted in opposite directions to one another GB 2 549 257 A not readily redesigned to meet the high demand for small paper packaging products and/or devices with limited installation space.

The object of the present invention is to overcome the disadvantages of the prior art, in particular to improve a device for producing a three-dimensional packaging product from a web-shaped starting material in such a way that it simplifies the threading of starting material into the forming station and the elimination of jams, a reliable Feeding of the web is made possible and / or the device is space-optimized.

The object is solved by the subject matter of the independent claims. Preferred developments are specified in the dependent claims.

Accordingly, a device is provided for producing a three-dimensional packaging product, such as a cushioning product, from a web-shaped starting material, such as a single- or multi-ply paper web, in particular paper. The production of a three-dimensional packaging product is to be understood in particular as the transfer of a web-like starting material into a state with a greater extent in the starting material thickness direction than the starting material. Waste paper is being used more and more frequently for the paper material, primarily for ecological reasons. However, due to its inhomogeneity, it is difficult to reshape, especially if the three-dimensional packaging product can always be produced uniformly and as simply and economically as possible. The web of starting material can be made from paper, such as recycled paper, in particular waste paper and/or 100% recyclable paper, which can be produced without chemical ingredients. Recycled paper is, in particular, paper material with a small proportion (less than 50%) of paper material containing fresh fibers. For example, paper materials containing 70% to 100% waste paper are used. The recycled paper within the meaning of this invention can be paper material which can have a tensile strength index in the machine direction of at most 90 Nm/g, preferably a tensile strength of 15 Nm/g to 60 Nm/g, and a tensile strength index in the cross-machine direction of at most 60 Nm/g. g, preferably a tensile strength of 5 Nm/g to 40 Nm/g. A standard DIN EN ISO 1924-2 or DIN EN ISO 1924-3 can be used to determine the tensile strength or the tensile strength index. Additionally or alternatively, a recycled paper property or waste paper property can be characterized by the so-called bursting resistance. A material in this sense is recycled paper with a burst index of at most 3.0 kPa*m^2/g, preferably with a burst index of 0.8 kPa*m^2/g to 2.5 kPa*m^2/g. The DIN EN ISO 2758 standard is used to determine the bursting index. Furthermore, the packaging material has a mass per unit area of in particular 40 g/m2 to a maximum of 140 g/m2. The starting material can be in the form of a roll of web material or a zigzag-folded stack of packaging material, which is also referred to as a leporello stack.

In principle, the device can be dimensioned and designed in such a way that it is miniaturized, ie dimensioned significantly smaller than corresponding devices from the prior art and/or is able to produce significantly smaller packaging products. This can satisfy the demand for small packaging products. On the other hand, inventive appropriate devices meet the demand for ever smaller available storage areas for such packaging product provision devices. For example, as a rule of thumb for the overall dimensions of generic devices, it was required that these should not exceed the external dimensions of a standard industrial pallet. For example, devices according to the invention have an overall dimension of less than 650 mm in length in the conveying device, less than 450 mm wide transversely to the conveying device and less than 300 mm high transversely to the conveying and width direction. The device according to the invention can be designed to produce small or miniature packaging products or cushions. Such small or miniature packaging products can have a length in the conveyor of less than 30 mm, a width of less than 120 mm, in particular in the range of 80 to 90 mm, and a height of less than 40 mm, in particular in the range of 20 to 30 mm.

A first aspect of the invention relates to a device for mechanically producing a three-dimensional packaging product from a web-like starting material, in particular paper starting material. The device comprises a forming station with a convergence channel for transverse compression, in particular folding or rolling, of the starting material, with a boundary wall of the convergence channel being adjustable, in particular pivotable, between an operating position in which the starting material is transversely compressed as it is conveyed through, and a release position in which access is released into the convergence channel, wherein the forming station has a conveyor device for removing the starting material from a starting material supply that can be arranged upstream of the forming station. The conveying devices have at least one drive means which is rotatably mounted on the adjustable boundary wall and which, in the operating position of the adjustable boundary wall, can be moved transversely to the conveying direction, in particular in the direction of the thickness of the starting material. If a movement, an extension or a direction is indicated above and below as “transverse” to a reference direction, here the conveying direction, this means in particular that the corresponding movement, extension or direction does not run parallel to the reference direction, but at an angle , in particular at an angle of at least 10°, 20°, 30°, 40%, 50°, 60°, 70° or 80°, preferably orthogonally, to the reference direction. For example, the above-described mobility of the drive means transversely to the conveying direction means that it is not movable parallel to the conveying direction, but is movable, for example, orthogonally to the conveying direction, in particular in the direction of the thickness of the starting material.

By attaching the rotatably mounted drive means to the adjustable boundary wall, the at least one drive means can be moved away from the convergence channel in the release position with the boundary wall, which facilitates both the elimination of jams and the threading of web-shaped starting material into the device. However, when attempting to attach rotatable drive means to adjustable boundary walls of conventional devices, it has been found that material jams occur more frequently and/or the reliability with which the material web is drawn in decreases. Without being bound to an explanation, this seems to be due to the fact that the adjustable, in particular movable, mounting of the boundary wall in generic devices has too much play for reasons of cost and space efficiency, so that the movable drive means after the adjustable boundary wall has been moved only once operating position to the release position and from the release position back to the operating position is no longer in the same position as before. This seems to affect the reliability of the feeder. Attempts to increase the reliability of the threading by increasing the force (force transmission contact) acting between the starting material and the driving means during operation have led to an increased incidence of material jamming. A reduction in the force acting in the power transmission contact led to a deterioration in the reliability of the feed. Choosing an adjustable bearing for the lid with less clearance has proven to be uneconomical and detrimental to the weight of the device. Surprisingly, it has been found that the fact causing the problem, namely the adjustability, in particular mobility, of the boundary wall with the drive means between the operating position and the release position can be compensated for by additional mobility, namely the mobility of the drive means in the operating position. It has been shown that the drive means has a kind of floating bearing in the operating position, which surprisingly can compensate for both incorrect positioning due to play in the adjustable bearing of the boundary wall and fluctuations in the web-shaped starting material in the direction of the starting material thickness in such a way that the risk of material jamming is reduced and the reliability of the feed is increased.

The adjustable boundary wall is preferably of trapezoidal design. in particular the adjustable boundary wall tapers in the conveying direction, in particular in a trapezoidal manner. The adjustable boundary wall is particularly preferably a boundary wall which upwardly bounds the convergence channel in the direction of gravity. In this way it can be ensured in particular that the weight of the adjustable boundary wall is used to reinforce a force acting between the starting material and the rotatably mounted drive means in the force transmission contact. As a result, the reliability of feeding in the starting material can be increased. In particular, the boundary wall can be pivoted between the operating position and the release position, in particular pivotable via a pivot axis extending transversely to the conveying direction, in particular in the width direction of the starting material.

The production of a three-dimensional packaging product is to be understood in particular as the transfer of a web-like starting material into a state with a greater extent in the starting material thickness direction than the starting material. This can be achieved, for example, by the transverse compression described above and below. The transverse compression is particularly preferably followed by a fastening of longitudinal strips folded in or rolled up during the transverse compression. For this purpose, the device has, in particular, an embossing and/or perforating station arranged downstream of the forming station in the conveying direction.

The conveying direction is to be understood in particular as the direction in which the starting material is withdrawn during operation from the starting material supply, such as a starting material roll, in particular in the form of a sleeveless roll, or a leporello stack, and conveyed through the device. This direction can also be referred to as the longitudinal direction of the starting material.

The width direction of the starting material is to be understood in particular as the direction in which the starting material extends between longitudinal edges of the web-shaped starting material. In particular, the longitudinal edges extend in the conveying direction. In particular, the starting material width direction is the direction in which the starting material is transversely compressed as it is conveyed through the forming station.

A web-like starting material is to be understood in particular as a starting material which extends in particular over a surface area along the longitudinal direction (conveying direction) of the starting material and the width direction of the starting material. In particular, orthogonally to an area defined by the longitudinal direction of the starting material and the direction of the width of the starting material, the web-shaped starting material extends in a starting material thickness direction. In particular, the extension, in particular strength or thickness, of the web-shaped starting material in the starting material thickness direction is significantly smaller than the extension, in particular width, of the web-shaped starting material in the starting material width direction. Significantly smaller is to be understood in particular as meaning an extent in the direction of the thickness of the starting material of at most 20%, 10%, 5%, 3%, 2%, 1% or 0.5% of the extent of the starting material in the direction of the width of the starting material.

In particular, the longitudinal direction of the starting material, the direction of width of the starting material and the direction of thickness of the starting material define a coordinate system with three mutually orthogonal directions, also known as a Cartesian coordinate system. In particular in embodiments in which the starting material is deflected, the coordinate system migrates with the starting material. For example, in one embodiment, the feedstock may be conveyed horizontally from the feedstock supply to the apparatus. At the device, the starting material can then be deflected in a horizontal direction in which it runs through the device. In this case, prior to entry into the forming station, the conveying direction corresponds to a vertical direction and the starting material thickness and width directions each correspond to horizontal directions. Within the device, the conveying direction and the starting material width direction each correspond to a horizontal direction and the starting material thickness direction to a vertical direction.

Information on features of the device and its components, such as the forming station, which is made in relation to the conveying direction, starting material thickness direction and/or starting material width direction, therefore always refers to the coordinate system as it is aligned with the height of the corresponding component or a section of the component in the conveying direction .

Since the directions in which the stock material extends in terms of width and thickness change and can partially overlap during and after transverse compression, the co-migrating coordinate system in the state of the stock material before its transverse compression, particularly in the stock material supply, between the stock material supply and the apparatus or immediately before the first lateral compression. In particular, the coordinate sys tem when entering the forming station. In an example where the raw material enters the apparatus horizontally, the conveyance direction and the raw material width direction correspond to horizontal directions orthogonal to each other, respectively, and the raw material thickness direction correspond to a vertical direction. If, in this example, the starting material were then deflected in the vertical direction, the coordinate system would move along with the starting material or the transversely compressed material, so that the starting material thickness direction and the starting material width direction would then correspond to mutually orthogonal horizontal directions and the conveying direction would correspond to a vertical direction.

In particular, within the forming station, the starting material width direction can alternatively be referred to as the convergence direction. The convergence direction runs in particular orthogonally to the conveying direction and describes the direction in which the extent of the convergence channel decreases in the conveying direction, in particular due to the channel tapering in the conveying direction. Alternatively or additionally, the starting material thickness direction can be referred to as the normal direction, in particular within the forming station. The normal direction is the direction that describes a normal to a plane defined by the conveying direction and the direction of convergence. It should be clear that all information given above and below about the starting material width direction and the starting material thickness direction within the device, in particular the forming station, can also be made using the convergence direction and the normal direction.

The convergence channel is to be understood in particular as a channel that tapers in the conveying direction. In particular, the convergence channel tapers in a funnel shape in the conveying direction. In particular, the convergence channel is delimited at least on one side in the direction of the thickness of the starting material by at least one delimiting wall. In particular, the at least one boundary wall is designed in a funnel shape and/or tapers in a funnel shape, in particular in the conveying direction. In particular, the at least one boundary wall extends flatly in the conveying direction and in the direction of the thickness of the starting material, particularly in the operating state. The at least one boundary wall is preferably designed as an adjustable boundary wall according to the first aspect of the invention and/or as a pivotable boundary wall according to the second aspect of the invention.

In particular, the at least one boundary wall has two boundary walls which lie opposite one another, in particular in the operating state in the direction of the thickness of the starting material, and in particular extend parallel to one another. In particular, both boundary walls are trapezoidal and/or taper in a trapezoidal manner in the conveying direction. In particular, the convergence channel is bounded on both sides by the two boundary walls, particularly in the operating state in the direction of the thickness of the starting material. One of the two boundary walls is preferably designed as an adjustable boundary wall according to the first aspect of the invention and/or as a pivotable boundary wall according to the second aspect of the invention. The second boundary wall is preferably designed as a guide wall. A guide wall is to be understood in particular as a boundary wall on which the starting material entering the forming station is guided, in particular supported during transverse compression in the direction of the thickness of the starting material. The guide wall is particularly preferably designed as a mounting plate, on whose guide side facing the convergence channel starting material entering the forming station is guided and on which at least one drive means of the conveyor device is rotatably mounted and a motor driving the at least one drive means is fastened. In the following, the adjustable boundary wall is also referred to as the cover for easier readability. In the following, the guide wall is also referred to as the bottom for easier legibility. However, it is clear that these terms (lid and base) are only intended to simplify readability and should not entail any mandatory restrictions.

Alternatively or additionally, the forming station has at least two side walls that delimit the convergence channel in the width direction of the starting material. In particular, the at least one side wall has two side walls that converge in the conveying direction. In particular, the two side walls delimit the convergence channel on both sides in the starting material width direction. In particular, the convergence channel tapers due to the side walls running towards one another in the conveying direction, so that the extent of the convergence channel in the width direction of the starting material is greater at the upstream end of the forming station in the conveying direction, in particular at least 100%, 150%, 200% or 300% larger than at the downstream end of the conveying direction forming station.

The forming station preferably has a starting material inlet, via which the starting material can be drawn into the forming station, and a starting material outlet via which the transversely compressed starting material can be removed from the forming station. In particular, the forming station is delimited between the starting material input and the starting material output by one or more of the boundary walls and/or side walls described above in the direction of the width of the starting material and/or in the direction of the thickness of the starting material. In particular, the at least two side walls, together with the trapezoidal boundary walls, delimit the circumference of the convergence channel in the operating position between the starting material inlet and the starting material outlet. The side walls, the adjustable boundary wall and/or the guide wall preferably delimit the convergence channel up to the channel outlet. The channel outlet is preferably at a maximum distance of 200 mm, 150 mm, 100 mm, 75 mm, 50 mm, 30 mm, 15 mm or 5 mm from an embossing and/or perforation zone of an embossing and/or perforation station following the forming station in the conveying direction . As a result, in particular the transversely compressed starting material can be kept straight up to the embossing and/or perforation zone, which in particular prevents the tearing of laterally folded longitudinal edge strips and thus the occurrence of tears and paper jams.

As described above and below, the starting material is preferably transversely compressed when passing through the convergence channel. Transverse compression is preferably understood to mean folding or rolling in longitudinal edge strips of the web of starting material, in particular in order to form crumple cavities on the outside in the width direction of the starting material.

For this purpose, the starting material is preferably picked up and guided in the operating position via a boundary wall, in particular one of the trapezoidal boundary walls described above, in particular supported in the direction of the thickness of the starting material. This boundary wall is preferably the previously described guide wall, particularly preferably a mounting plate. When the starting material is conveyed further through the convergence channel in the conveying direction, the longitudinal edge strips of the starting material on the outside in the starting material width direction preferably abut the side walls and are deflected by them in the starting material thickness direction, in particular folded in. Due to the side walls running towards one another in the conveying direction, the longitudinal edge strips are deflected further in the direction of the thickness of the starting material as they are conveyed further through the convergence channel until they are preferably transferred to folding cheeks, on which the deflected longitudinal edge strips are deflected back, in particular rolled up, as they are conveyed further through in the direction of the thickness of the starting material. Alternatively or additionally, the rolling can take place in that the longitudinal edge strips butt against a further boundary wall, in particular the second trapezoidal boundary wall described above, at which the deflected longitudinal edge strips are deflected back, in particular rolled up, as they are conveyed further through in the direction of the thickness of the starting material.

Preferably, the boundary wall that guides back the longitudinal edge strips and/or the boundary wall that carries the fold-over cheeks forms the adjustable boundary wall described above. When the adjustable boundary wall is moved into the release position, the area of the convergence channel previously covered by the adjustable boundary wall is released, so that intervention in the convergence channel is made possible.

Alternatively or additionally, transverse compression can also be understood as simple compression, in particular accordion-like compression, of the starting material in the direction of the width of the starting material.

The at least one drive means can preferably be moved in the operating position relative to the adjustable boundary wall. This can be ensured, for example, by a translational mounting of the rotatably mounted drive means transversely to the conveying direction, in particular in the direction of the thickness of the starting material. The translatory bearing is preferably designed as a spring bearing. For this purpose, the translational bearing preferably has a spring, in particular a compression spring and/or spiral spring. The spring is preferably compressible and/or stretchable transversely to the conveying direction, in particular in the direction of the thickness of the starting material. In particular, the spring is arranged transversely to the conveying direction, in particular in the direction of the thickness of the starting material, between two support points. In particular, the spring is guided between the support points by a spring guide. In the case of a spiral spring, the spring guide can be a guide rod which guides the spiral spring on the inside. A support point can be formed by the adjustable boundary wall itself or by a web of the translatory bearing, for example a U-shaped bearing. The other support point can be a shaft, in particular a wheel shaft, carrying the at least one means of rotation.

In a preferred embodiment, the at least one drive means rotatably mounted on the adjustable boundary wall has at least two drive means, both of which are transverse to the conveying direction, in particular in the starting material thickness direction, are movably mounted, in particular via the above-described mounting or spring mounting, to the adjustable boundary wall. The two drive means are particularly preferably coupled to one another via a common rotary shaft. Preferably, the two driving means are spaced from each other along the rotary shaft in the stock width direction. A spring, in particular a compression spring and/or spiral spring, is preferably fastened, in particular supported, on an end of the rotary shaft which faces the respective drive means. In this case, the rotary shaft forms in particular one of the support points described above. In this way, it can be ensured in particular that thicknesses of the starting material that vary in the width direction of the starting material are compensated for by individual compensating movements of the individual drive means. In the operating position, the at least one spring is preferably prestressed, in particular compressed or stretched, between the at least one drive means and the adjustable boundary wall.

In particular, this prestressing of the at least one spring is brought about by a relative movement between the at least one drive means and the boundary wall transversely to the conveying direction. The relative movement between the at least one drive means and the adjustable boundary wall is particularly preferably brought about by moving the boundary wall into the operating position, in particular by the at least one drive means moving transversely to the conveying direction when it encounters a resistance, such as a corresponding drive means or a boundary wall , in particular in the direction of the thickness of the starting material, deviates towards the adjustable boundary wall.

Alternatively or additionally, the boundary wall and the at least one drive means have a further degree of freedom of movement within the operating position in addition to the adjustability, in particular pivotability, between the operating position and the release position, and can also be moved purely translationally in particular within the operating position. The additional mobility in the operating position is particularly preferably realized via a link guide of the adjustable boundary wall. In particular, the link guide allows a movement, in particular a pivoting movement, of the boundary wall from the release position to the operating position and vice versa, and in the operating position a translational movement transverse to the conveying direction, in particular in the direction of the thickness of the starting material.

The link guide is preferably formed by at least one pin on one wall of the forming station and a link recess on another wall of the forming station. The at least one pin is preferably attached to the cover, in particular to a section of the cover extending in the direction of the thickness of the starting material, and/or the connecting link recess is attached to the base, in particular to a section of the base extending in the direction of the thickness of the starting material, or vice versa. The link cutout is preferably designed as a curved link, in particular as a U-shaped or J-shaped link cutout. A U-shaped or J-shaped link recess is to be understood, for example, as a recess in a wall that first extends in a starting material thickness direction, for example in the gravitational direction, then in the conveying direction and finally in the opposite starting material thickness direction, for example opposite to the gravitational direction.

In embodiments in which the cover can be moved not only between the operating position and the release position but also within the operating position, the at least one drive means can be immovable with respect to the cover, apart from its rotatable mounting.

The forming station preferably has a pressing device which forces the at least one rotatably mounted drive means against the base material in the operating position of the adjustable boundary wall to form a force-transmitting contact between the drive means and the base material. In embodiments in which the mobility of the at least one drive means in the operating position is brought about by a spring system, in particular a spring bearing, this spring system can simultaneously function as a pressing device. In embodiments in which the mobility of the at least one drive means in the operating position is implemented via additional mobility of the cover within the operating position, the pressing device can be implemented, for example, via a drive that presses the drive means against the starting material.

It is clear that a pressing device is to be understood as an active element, such as a spring or a drive. Passive elements, such as an adjustable cover, which only transfer their weight to the drive means, should not be understood as a pressing device. In particular with the miniaturization of the device, it has been found that the dead weight of components, such as the cover, no longer sufficient to provide a particularly reliable power transmission contact. In this respect, it is particularly advantageous for miniaturized devices to use a pressing device. Nevertheless, it has proven to be advantageous for at least one drive means to be attached to a boundary wall that bounds the convergence channel at the top in the gravitational direction and/or can be adjusted upwards in the gravitational direction in order to use the weight of the boundary wall for the power transmission contact.

The force transmission contact is preferably provided by a spring force acting on the starting material from the at least one drive means, in particular of at least 50 Newtons, 75 Newtons, 100 Newtons or 125 Newtons and/or at most 175 Newtons, 200 Newtons, 250 Newtons or 300 Newtons.

In particular, the spring force is provided by at least one spring system, in particular a spring bearing, which is prestressed in the operating position. The suspension is preferably provided by the spring bearing described above. In particular, the at least one spring system can have at least one spring that pretensions the rotatable drive means in the operating position against the starting material. The at least one spring can be designed as a spiral spring and/or compression spring. The at least one spring can be resiliently mounted transversely to the conveying direction, in particular in the starting material thickness direction, so that it is compressed and/or stretched transversely to the conveying direction, in particular orthogonally to the conveying direction, when the adjustable boundary wall is moved into the operating position. As described below, the at least one drive means preferably has two drive means rotatably mounted on the adjustable boundary wall or a drive roller. In the case of at least two drive means, in the operating position these are preferably acted upon in each case by a spring with a corresponding spring force. In the case of a drive roller, this is preferably flanked by two springs in the direction of the width of the starting material. For the springs, springs have proven to be advantageous which provide an average spring force of between 2 and 6 N/mm during compression or expansion and/or are prestressed and/or stretched between 10 mm and 30 mm in the operating position. The at least two springs are particularly preferably supported on one side on the adjustable boundary wall or on a support point attached thereto and on the other side on a drive means shaft, in particular a wheel shaft or roller shaft, supporting the at least one rotatable drive means.

Alternatively or additionally, the spring force is provided by bracing the adjustable boundary wall against a further boundary wall of the convergence channel, in particular by means of connecting elements such as clamps, screws or a link guide. Clamps can be realized in particular via at least one lug, which engages around a lug in the operating position. A slotted guide can be realized in particular via a slotted slot in which a bolt is guided. The spring force can be built up in that the spring described above is compressed as a result of the bracing and a spring force is thereby provided.

In the operating position, the spring force preferably acts essentially in the direction of the thickness of the starting material. In this context, essentially means a deviation of at most 45°, 30°, 15°, 10°, 5°, 3° or 1° from the starting material thickness direction.

Alternatively, the spring force can also be realized in that the at least one drive means has an elastically definable rolling area, which deforms when the adjustable boundary wall is braced against another boundary wall, forming an elastic restoring force that acts as a spring force from the drive means on the starting material. Particularly preferably, the at least one drive means rotatably mounted on the adjustable boundary wall is a drive means of a pair of drive means, of which both drive means each have an elastically definable rolling region, which are pressed against one another in the operating position, forming an elastic deformation restoring force.

As an alternative to the embodiment with springs, the force transmission contact can be provided via an electric, pneumatic or hydraulic drive in particular. In particular, the drive is designed not only to provide a power transmission contact but also to move the adjustable boundary wall from the operating position to the release position and vice versa.

The at least one drive means rotatably mounted on the adjustable boundary wall is preferably at least one conveyor wheel and/or at least one conveyor roller. A conveyor roller is to be understood in particular as a rotatably mounted drive means whose axial extension is greater, preferably at least 10%, 30%, 50%, 70%, 100%, 150%, 200%, 300%, 350%, 400%, 500% %, 600%, 700%, 800%, 900% or 1000% is greater than that radial extent. The axis of rotation of the at least one rotatably mounted drive means preferably extends in the width direction of the starting material. In the operating state, the at least one rotatably mounted drive means is preferably in engagement with the starting material drawn into the forming station and/or is spaced apart from the starting material drawn into the forming station in the release position.

The at least one drive means rotatably mounted on the adjustable boundary wall preferably has at least two drive means rotatably mounted on the adjustable boundary wall, which are preferably movable in the operating position of the adjustable boundary wall transversely to the conveying direction, in particular in the direction of starting material thickness. As described above, it has turned out that the mobility of the drive means in the operating position, transversely to the conveying direction, surprisingly compensates for the problems caused by the movable mounting of the boundary wall. Mobility in the direction of the thickness of the starting material has proven to be particularly advantageous, since this contributes in particular to compensating for fluctuations in the thickness of the starting material.

The conveyor device preferably has at least one pair of rotatably mounted drive means, in particular at least one pair of conveyor wheels or one pair of conveyor rollers, which are braced against one another in the operating position to form force-transmitting contact with the starting material and are spaced apart from one another in the release position. In particular, the at least one drive means mounted on the adjustable boundary wall forms a drive means of the at least one pair of drive means, with the other drive means of the at least one pair of drive means preferably being rotatably mounted on a boundary wall opposite the adjustable boundary wall in the direction of the starting material thickness. It has been found to be particularly preferred to design the drive means fastened to the adjustable boundary wall as a conveyor wheel or conveyor roller, the radius of which is smaller than the radius of the drive means mounted on the opposite boundary wall and designed as a conveyor wheel or conveyor roller.

The conveying devices particularly preferably have at least two of the above-described pairs of drive means, in particular pairs of conveying wheels, which are spaced apart from one another in particular in the width direction of the starting material and/or are arranged at the same height in the conveying direction.

Especially in embodiments with at least one pair of rotatably mounted drive means, the mobility of the at least one drive means mounted on the adjustable boundary wall has proven to be advantageous. It was found that incorrect positioning of the drive means in a pair relative to one another, which was caused, for example, by too much play in the cover, can be compensated for by the mobility of the drive means attached to the cover within the operating state. Furthermore, a simplified intervention in the convergence channel can thereby be provided in particular. Furthermore, in the release position, the insertion of starting material into the forming station can be simplified by spacing the drive means from one another.

A second aspect of the invention also relates to a device for mechanically producing a three-dimensional packaging product from a web-like starting material, in particular paper starting material. The device comprises a forming station with a convergence channel for transverse compression, in particular folding or rolling, of the starting material, with a boundary wall of the convergence channel being pivotable between an operating position in which the starting material is transversely compressed as it is conveyed through, and a release position in which access to the convergence channel is possible is released. The forming station comprises a conveyor device with at least one rotatably mounted drive means for drawing off the starting material from a starting material supply that can be arranged upstream of the forming station. The pivot axis of the boundary wall extends at an end section of the boundary wall downstream in the conveying direction transversely to the conveying direction, in particular in the width direction of the starting material.

The pivotable boundary wall is preferably designed in a trapezoidal manner. In particular, the trapezoidal boundary wall tapers in the conveying direction. The end section of the boundary wall downstream in the conveying direction is to be understood in particular as a section of the adjustable boundary wall which, starting from the end of the boundary wall downstream in the conveying direction, extends upwards in the conveying direction by less than 30%, 20%, 10% or 5% of the extension of the boundary wall in the conveying direction. Particularly preferably, the pivot axis of the boundary wall is arranged outside of the convergence channel, in particular spaced apart in the direction of the starting material thickness from the side of the pivotable boundary wall that faces the convergence channel. In particular, the pivot axis is so positio ned that the weight of the pivotable boundary wall pushes it down in the gravitational direction and in particular in the conveying direction.

By positioning the pivot axis on the end section of the boundary wall downstream in the conveying direction, it is pivoted away from an upstream end of the forming station in the release position, which facilitates access to the convergence channel via the upstream end of the forming station. Furthermore, this facilitates the insertion of the starting material into the forming station from the end of the forming station upstream in the conveying direction. As a result, the supply of starting material can advantageously be positioned at an end of the forming station that is upstream in the conveying direction, and at the same time the insertion of the starting material into the forming station can be made easier. Furthermore, the positioning of the pivot axis according to the invention makes it possible for embodiments with pairs of drive means to be arranged in an end region of the forming station upstream in the conveying direction and at the same time to be separated from one another by moving the boundary wall into the release position. Reliable threading can thus be provided on the one hand, in particular by positioning the drive means in the area of the forming station upstream in the conveying direction, and on the other hand simplified insertion of starting material and simplified jam clearance can be provided by the possibility of moving the drive means of a pair of drive means away from one another in the release position to move.

It has proven particularly advantageous to attach at least the at least one rotatable drive means to the pivotable boundary wall, in particular to attach it to an end section of the boundary wall that is upstream in the conveying direction. The end section of the boundary wall upstream in the conveying direction is to be understood in particular as a section of the boundary wall which, starting from the end of the boundary wall upstream in the conveying direction, extends downstream by at most 30%, 25%, 20%, 15%, 10% or 5% of the extension of the pivotable boundary wall in the conveying direction extends. Surprisingly, it has been found that the influence of the weight of the pivotable boundary wall and the drive means attached to it can be used to advantage via the correspondingly long lever between the pivot axis and the power transmission contact in order to improve the reliability of feeding in the starting material.

The device according to the second aspect of the invention can be designed according to the device of the first aspect of the invention and vice versa. Furthermore, preferred embodiments of individual components of the device that are described in connection with the first aspect of the invention can advantageously also be configured in the device according to the second aspect of the invention and vice versa.

The conveying devices preferably have a motor and at least one pair of rotatably mounted drive means, one drive means of the at least one drive means pair being coupled to the motor and the other drive means of the at least one drive means pair being freely rotatably mounted. In particular, the at least one drive means mounted on the adjustable, in particular pivotable, boundary wall forms the freely rotatable drive means of the at least one pair of drive means. Alternatively or additionally, the drive means of the at least one pair of drive means coupled to the motor is mounted on a boundary wall opposite the adjustable boundary wall in the direction of the thickness of the starting material.

By mounting the motor on the guide wall, the weight of the adjustable boundary wall and thus the weight force acting on the rotatable drive means via the adjustable boundary wall can be better adjusted, which has a positive effect on the risk of material jamming.

The forming station preferably has at least one guide device, such as a slide bar or a deflection roller, for feeding the starting material into the forming station in an aligned manner. The guide device is preferably attached to the adjustable, in particular pivotable, boundary wall of the convergence funnel or decoupled from it. In particular, the forming station has a further guide device for the aligned feeding of the starting material into the forming station via a gap formed between the two guide devices. This further guide device is preferably decoupled from the adjustable, in particular pivotable, boundary wall. In particular, the further guide device is fastened to a boundary wall lying opposite the adjustable boundary wall in the direction of the thickness of the starting material.

Particularly in the case of embodiments in which one of the guide devices is attached to the adjustable boundary wall, by offsetting the boundary wall in the release position, the small gap between the two guide devices in the operating position can be converted into a large engagement opening. This makes it easier to insert the starting material between the two guide devices. Furthermore, a material jam that occurs between the two guide devices can be eliminated more easily as a result.

The device preferably has a removal device downstream of the forming station in the conveying direction, in particular a stamping and/or perforation station, for removing the transversely compressed starting material from the forming station. The downstream removal device is particularly preferably decoupled from the adjustable, in particular pivotable, boundary wall. This means in particular that the displacement of the adjustable boundary wall between the operating position and the release position has no influence on the downstream discharge device. Particularly in embodiments of the downstream conveying devices with a pair of wheels for embossing and/or perforating the previously transversely compressed starting material, the pairs of wheels are not moved relative to one another during the movement of the boundary wall between the release position and the operating position. This decoupling of the downstream conveying devices from the adjustable boundary wall of the forming station has proven to be particularly advantageous for eliminating jams, since the downstream conveying device is still ready for operation even when the forming station is in the release position. Thus, for example, by driving the drive means of the downstream removal device in the opposite direction to the conveying direction, material causing jams can be conveyed out of the conveyor device, which can be manually gripped and pulled out at the same time through the release position of the boundary wall.

Alternatively, at least one drive means, in particular an embossing and/or perforation wheel, of the downstream removal device can be attached to the movable boundary wall. As a result, when the adjustable boundary wall is moved into the release position, the drive means can be moved away from another drive means of the downstream removal device, in particular to enable intervention in the contact area of a downstream removal device configured as a pair of drive means, in particular a pair of embossing and/or perforating wheels. In this way, in particular, material that is accumulating in the downstream removal device can be made more easily accessible and removable.

A third aspect of the invention also relates to a device for mechanically producing a three-dimensional packaging product from a web-shaped starting material, in particular paper starting material. The device comprises a forming station with a convergence channel, which has two folding cheeks running towards one another in the conveying direction for transverse compression, in particular folding or rolling, of the starting material, around which longitudinal edge strips of the starting material running through the device are folded. Furthermore, the device comprises an embossing and/or perforation station which is downstream of the forming station in the conveying direction and has an embossing and/or perforation zone in which the folded-over longitudinal edge strips are connected to a central region of the starting material. The cover cheeks are aligned with one another in such a way that an imaginary crossing point of the two cover cheeks is a maximum of 30 mm away from the embossing and/or perforation zone upstream in the conveying direction. The crossing point is preferably a maximum of 25 mm, 20 mm, 15 mm, 10 mm or 5 mm upstream in the conveying direction and/or a maximum of 30 mm, 25 mm, 20 mm, 15 mm, 10 mm or 5 mm downstream from the embossing and/or perforation zone spaced.

The inventors of the present invention have recognized the following conflict of objectives when positioning the crossing point of the two folding walls. On the one hand, it should be ensured that the longitudinal edge strips are sufficiently turned inwards before entering the embossing and/or perforation zone in order to be connected to the central area of the starting material in the embossing and/or perforation station. This is important to ensure that the folded-over longitudinal margins are actually connected and to avoid longitudinal margins that are not completely folded over being pulled past the embossing and/or perforation zone and thereby causing a risk of jamming. On the other hand, the dimensioning of the device should be kept as small as possible. If the crossing point is too far away from the embossing and/or perforation zone upstream in the conveying direction, this leads to an unnecessarily large dimensioning of the device. However, if the crossing point is positioned too far away from the embossing and/or perforation zone downstream of the conveying direction, this can lead to insufficient bonding of the folded-over longitudinal edge strips in the central region. With the above-described positioning of the crossing point relative to the embossing and/or perforation zone, the inventors of the present invention have surprisingly found a compromise that meets both the requirements for reliable attachment of the folded longitudinal edge strips at the central area as well as the need for a device that is as small as possible.

The folding cheeks are preferably designed as tubes. The folding cheeks preferably have a diameter of at least 10 mm and/or at most 24 mm, in particular at least 12 mm and/or 20 mm, preferably at least 14 and/or at most 18 mm. It has been found that the diameters of the flaps affect the size of the crush voids of the packaging product. In this respect, the above preferred diameter range has turned out to be particularly preferred for the production of miniaturized packaging products. Folding cheeks are to be understood in particular as rods, in particular cylinders. In particular, the envelope cheeks run towards one another in the conveying direction. In particular, the envelope cheeks run towards one another in the conveying direction at essentially the same angle as the convergence channel tapers in the conveying direction. Substantially means in particular a deviation of at most 20°, 15°, 10°, 5°, 30 or 1°. Preferably, the folding walls are spaced apart from side walls in the width direction of the starting material, which delimit the convergence channel in the width direction of the starting material, in particular such that longitudinal edge strips of starting material conveyed through the convergence channel can be folded between the side walls and the folding walls. In particular, in each case one folding cheek extends parallel to the side wall adjacent to it. Preferably, the folded edges are spaced in the direction of the thickness of the starting material from at least one boundary wall that delimits the convergence channel in the direction of the thickness of the starting material, in particular spaced on both sides from a boundary wall that delimits the convergence channel in the direction of the thickness of the starting material. In particular, the turn-up cheeks extend inside the convergence channel between the two boundary walls.

The embossing and/or perforation station can in particular have deformation wheels that mesh with one another, in particular deformation gear wheels, in order to emboss and/or perforate the folded longitudinal edge strips with a central area of the starting material. The embossing and/or perforation zone is to be understood in particular as the area of the device in which the longitudinal edge strips are embossed with the central area. In the case of an embossing and/or perforation zone which has deformation wheels that mesh with one another, the embossing and/or perforation zone lies in particular in the area in which the wheels mesh with one another. Alternatively, the embossing and/or perforation zone can be defined by the height in the conveying direction at which the transversely compressed material traverses a deformation plane which is defined by the axes of rotation of the embossing and/or deformation wheels that mesh with one another.

The imaginary crossing point of the two folding walls is to be understood in particular as the crossing point of two lines that extend long through the folding walls. In the case of an embodiment of the folding cheeks as tubes, the crossing point is the point at which the longitudinal axis, in particular the rotation axis of symmetry, of the tubes intersect. In a preferred embodiment, the crossing point represents an intersection. However, the crossing point does not have to be an intersection. Thus, in a less preferred embodiment, the fold-over cheeks can be offset from one another in the direction of the thickness of the starting material, so that the lines intersect at a distance from one another in the direction of the thickness of the starting material. In such an embodiment, the crossing point would be the point at which the lines intersect when viewed in the stock gauge direction.

The device according to the third aspect of the invention can be designed according to the device of the first and/or second aspect of the invention and vice versa. Furthermore, preferred embodiments of individual components of the device that are described in connection with the first and/or second aspect of the invention can advantageously also be configured in the device according to the third aspect of the invention and vice versa.

The folding cheeks preferably run at an angle of at least 40°, 50°, 60°, 70°, 80° or 90° and/or at most 170°, 150°, 130°, 110°, 90° or 80°, particularly preferred of 70° ± 10 or 70° ± 20 towards each other. It has been found that the extent of the device in the conveying direction can be reduced as the angle increases, which is advantageous for the miniaturization of the device. On the other hand, an angle that is too large leads to greater transverse compression of the starting material in a small space, which is associated with an increased risk of tearing and thus the risk of jamming. The area described above has turned out to be a surprisingly good compromise for solving this conflict of objectives. The side walls particularly preferably run at an angle of at least 40°, 50°, 60°, 70°, 80° or 90° and/or at most 170°, 150°, 130°, 110°, 90° or 80° preferably of 70° ± 10 or 70° ± 20 towards each other, in particular the convergence channel tapers at a corresponding angle.

Alternatively or additionally, the fold-over cheeks are spaced apart from one another by at least 5 mm, 10 mm or 15 mm and/or at most 40 mm, 30 mm or 25 mm at their end downstream in the direction of the width of the starting material. This distance has proven to be particularly advantageous, on the one hand to enable the starting material to be turned over into a three-dimensional packaging product that is as small as possible and on the other hand to keep the dimensions of the device as small as possible.

In the direction of the thickness of the starting material, the folded edges are preferably spaced at least 4 mm and/or at most 20 mm, in particular at least 6 mm and/or at most 16 mm, preferably between 8 mm and 12 mm, from a boundary wall, in particular guide wall, of the convergence channel. It has been found that this distance should preferably not be too small or large, so that the longitudinal edge strips can still be pulled around the edge of the cover. In this respect, the above range has proven to be particularly preferred. The boundary wall is preferably a boundary wall which bounds the convergence channel in the direction of the thickness of the starting material. In particular, such a positioning of the folding cheeks relative to the guide wall described above and below has proven to be advantageous for wrapping and rolling the starting material onto a packaging product with a small width extension.

The folding cheeks are preferably fastened to a boundary wall of the convergence channel, which can be adjusted between an operating position in which the starting material is transversely compressed as it is conveyed through, and a release position in which access to the convergence channel is released. The boundary wall is particularly preferably the adjustable boundary wall described above in connection with the first aspect of the invention with the rotatably mounted drive means attached thereto and/or the pivotable boundary wall described in connection with the second aspect of the invention, the pivot axis of which is on a downstream end portion of the boundary wall extends transversely to the conveying direction.

The device according to the first, second and/or third aspect of the invention preferably has an embossing and/or perforating station arranged downstream of the forming station. Alternatively or additionally, downstream of the forming station, the device has a severing station, in particular with a translationally guided blade for severing a packaging product of a desired length from the starting material. The device particularly preferably has both an embossing and/or perforation station and a separating device, with the separating device being arranged downstream of the embossing and/or perforation station in the conveying direction. Furthermore, the device preferably has an output device for conveying away the separated packaging product.

The invention also relates to a system comprising a device according to one or more of the aspects of the invention described above and a supply of starting material arranged in particular upstream of the device in the conveying direction, in particular a roll of starting material, in particular in the form of a sleeveless roll, or a leporello stack, with preferably a web-shaped Starting material extends from the starting material supply, in particular from the outer periphery of the starting material roll, into the preforming station.

Furthermore, the invention relates to the use of a device according to one or more of the aspects described above for producing a three-dimensional packaging product from a web-shaped starting material, in particular paper starting material, wherein the web-shaped starting material is pulled off the outer circumference of the starting material roll, in particular in the form of a coreless roll.

The inventors of the present invention have found that the first and second aspects of the present invention in particular make it possible to increase the reliability of feeding in the starting material in such a way that the starting material is reliably drawn off even from a horizontal roll of starting material, in particular in the form of a coreless roll can be.

The invention also relates to a packaging product which is produced from a web-shaped starting material, in particular paper starting material, by means of a device according to one or more of the aspects described above or in the system described above and/or whose width measured transversely to the longitudinal direction of the web is less than 12 cm and/or or whose length in the longitudinal direction of the web is less than 30 cm. It has been found in the prior art that there is a great need for miniature packaging products, which can be satisfied by the packaging products of the present invention.

• 1: eine Seitenansicht einer Vorrichtung zum maschinellen Erzeugen eines dreidimensionalen Verpackungserzeugnisses aus in einer Materialbahnrolle bereitgestelltem bahnförmigen Ausgangsmaterial;
• 2: eine Seitenansicht einer Vorrichtung zum maschinellen Erzeugen eines dreidimensionalen Verpackungserzeugnisses aus in einem Leporellostapel bereitgestelltem bahnförmigen Ausgangsmaterial;
• 3: eine schematische Darstellung einer beispielhaften Ausführung eines erfindungsgemäßen Verpackungserzeugnisses;
• 4: eine perspektivische Schnitt-Seitenansicht einer Vorrichtung mit Umformstation in Betriebsstellung;
• 5: eine weitere Schnitt-Seitenansicht der Umformstation aus 4 in Betriebsstellung;
• 6: eine perspektivische Seitenansicht auf die Umformstation aus 4 in Betriebsstellung;
• 7: eine Seitenansicht auf die Umformstation aus 4 in Freigabestellung;
• 8a: eine Ansicht von hinten in die Umformstation in Freigabestellung aus 7;
• 8b: eine perspektivische Ansicht von de Seite auf eine gegenüber 8a alternative Umformstation in Freigabestellung;
• 9: eine perspektivische Ansicht von der Seite auf die Umformstation aus 8a in einer weniger weit geöffneten Freigabestellung;
• 10: eine perspektivische Ansicht von der Seite auf eine gegenüber 6 alternative Umformstation in Schließstellung;
• 11: eine perspektivische Schnitt-Ansicht von hinten in die Umformstation aus 6 in Betriebsstellung;
• 12: eine Detailansicht einer Anpresseinrichtung aus 11;
• 13: eine perspektivische Schnitt-Ansicht von hinten in eine gegenüber 10 alternative Umformstation in Betriebsstellung;
• 14: eine weitere perspektivische Schnitt-Ansicht in die Umformstation aus 13 in Betriebsstellung;
• 15a: eine Draufsicht auf eine schematisch dargestellte Vorrichtung mit Förderrollen;
• 15b: eine Draufsicht auf eine schematisch dargestellte Vorrichtung mit Förderwalzen; und
• 16 bis 20: Alternative Ausführungsformen von Fördereinrichtungen der Umformstation.

Further features, properties and advantages of the invention become clear from the following description of preferred embodiments of the invention with reference to the accompanying drawings, in which:

• 1 : a side view of a device for mechanically producing a three-dimensional packaging product from web-like starting material provided in a roll of web material;
• 2 : a side view of a device for mechanically producing a three-dimensional packaging product from web-shaped starting material provided in a leporello stack;
• 3 : a schematic representation of an exemplary embodiment of a packaging product according to the invention;
• 4 : a perspective sectional side view of a device with a forming station in the operating position;
• 5 : another sectional side view of the forming station 4 in operating position;
• 6 : a perspective side view of the forming station 4 in operating position;
• 7 : a side view of the forming station 4 in release position;
• 8a : a rear view of the forming station in the release position 7 ;
• 8b : a perspective view from the side to one opposite 8a alternative forming station in release position;
• 9 : a perspective view of the forming station from the side 8a in a less open release position;
• 10 : a perspective view from the side to one opposite 6 alternative forming station in closed position;
• 11 : a perspective sectional view from behind into the forming station 6 in operating position;
• 12 : a detailed view of a pressing device 11 ;
• 13 : a perspective sectional view from behind in a opposite 10 alternative forming station in operational position;
• 14 : another perspective sectional view of the forming station 13 in operating position;
• 15a 1: a plan view of a schematically illustrated device with conveyor rollers;
• 15b 1: a plan view of a device with conveying rollers shown schematically; and
• 16 until 20 : Alternative embodiments of conveying devices of the forming station.

In the following description of exemplary embodiments of the present invention, a device according to the invention for producing a three-dimensional packaging product from a web-shaped starting material, in particular paper starting material, is generally provided with the reference number 1 . For the description of the following exemplary embodiments with reference to the attached figures, it should be assumed that the overall dimensions of the device 1 shown are dimensioned such that the device 1 can be placed on a standard industrial pallet and does not exceed its dimensions. For example, the overall length of the device is less than 650 mm, the overall width is less than 450 mm, and the overall height is less than 300 mm. The device 1 of the exemplary embodiments shown in the figures is set up to produce small or so-called miniature packaging cushions, the length of which in the web direction of the starting material is less than 120 mm, in particular in the range of 80 mm to 90 mm, measured transversely to the longitudinal direction Width be less than 120 mm, in particular in the range of 80 mm to 90 mm, and their height are less than 40 mm, in particular in the range of 20 mm to 30 mm.

In the 1 and 2 are schematic basic sketches of exemplary embodiments of systems according to the invention, each with a device 1 according to the invention and a starting material supply 3 arranged upstream of the device 1, which is for example in the form of a leporello stack ( 2 ) or in the form of a starting material roll, in particular in the form of a coreless roll, ( 1 ) can exist.

In 1 1 is shown how a web-like starting material 5 extends into the device 1 from the outer periphery of the starting material roll 3, in particular in the form of a coreless roll. In 2 the kinked course of a web-like starting material 5 is shown, which extends from a leporello stack into the device 1. In the 1 and 2 the forming station for transverse compression of the starting material is indicated with the reference number 7 .

The device 1 can also be provided with a stand 9 with which the device 1 can be set down on the ground and with respect to which the device 1 can be adjusted in its orientation and on which the device 1 is adjustable in height.

In 3 a schematic representation of a packaging product 100 according to the invention is shown, which is produced from a web-shaped starting material 2 by means of a device 1 according to the invention and/or whose width a measured transversely to the longitudinal direction of the web is less than 12 cm, whose length c in the longitudinal direction of the web is less than 30 cm, whose vertical extent b is in the range from 2 cm to 3 cm. The packaging products 100 according to the invention comprise two lateral crumple cavities 103, 105 extending in the longitudinal direction of the web, which are formed by radially inward folding or inward rolling of lateral web sections of the web of starting material, which are also referred to above and below as longitudinal edge strips, of the starting material. Furthermore, the packaging product 100 according to the invention comprises a central fastening and/or deformation zone 107, which is also referred to above and below as the middle region of the starting material, in which the folded starting material web sections overlap and are bonded to one another. A width d of the attachment and/or deformation zone, measured in the width direction, can be in the range from 2 cm to 2.5 cm, the vertical extent e of which is less than 1.5 cm or less than 1 cm.

• eine Umformstation 7, die auch Vorformstation 7 genannt werden kann, mit einem Konvergenzkanal zum Querkomprimierung des bahnförmigen Ausgangsmaterials 5, insbesondere zum Einschlagen und Einrollen des bahnförmigen Ausgangsmaterials 5 zu einem dreidimensionalen Zwischenprodukt mit wenigstens einem sich in Bahnrichtung erstreckenden Knautsch-Hohlraum 103, 105;
• eine in Förderrichtung F an die Umformstation 7 anschließende Präge- und/oder Perforationsstation 13 mit einem Paar kämmender Präge- und/oder Perforationsräder 15, 17, die dazu eingerichtet sind, Längsrandstreifen des Ausgangsmaterials längs mit dem sich in Bahnrichtung erstreckenden Mittelberiech des Ausgangsmaterials zu verbinden;
• eine in Förderrichtung F an die Präge- und/oder Perforationsstation 7 anschließende Abtrennstation 19 mit einer translatorisch geführten Schneide 21 zum Abtrennen eines Verpackungserzeugnisses 100 einer gewünschten Länge von der Ausgangsmaterialbahn 5; und
• eine in Förderrichtung F an die Abtrennstation 19 anschließende Ausgabevorrichtung 23 mit einem Paar einander gegenüberliegenden Stetigförderern 25, 27 zum Abfördern des abgetrennten Verpackungserzeugnisses 100.

A device 1 according to the invention ( 4 and 5 ) can be divided into the following main components in the conveying direction, indicated by the arrow with the reference character F in 4 and 5 is indicated, divided:

• a forming station 7, which can also be called a preforming station 7, with a convergence channel for transverse compression of the web-shaped starting material 5, in particular for wrapping and rolling up the web-shaped starting material 5 to form a three-dimensional intermediate product with at least one crumple cavity 103, 105 extending in the direction of the web;
• an embossing and/or perforating station 13 following the forming station 7 in the conveying direction F and having a pair of intermeshing embossing and/or perforating wheels 15, 17, which are set up to join longitudinal edge strips of the starting material longitudinally to the central region of the starting material extending in the direction of the web ;
• a separating station 19 following the embossing and/or perforation station 7 in the conveying direction F and having a translationally guided cutting edge 21 for separating a packaging product 100 of a desired length from the starting material web 5; and
• an output device 23 following the separating station 19 in the conveying direction F and having a pair of mutually opposite continuous conveyors 25, 27 for conveying away the separated packaging product 100.

Different designs and views of the forming station 7 are discussed in detail below.

The starting material thickness direction S is indicated in the figures with the arrow S and the starting material width direction with the arrow B.

The forming station 7 has a convergence channel 11 for transverse compression, in particular wrapping or rolling, of the starting material (not shown). Best is the convergence channel 11 in 13 to recognize. The convergence channel 11 is delimited in the starting material thickness direction S by two delimiting walls 29, 65 lying opposite one another. The boundary walls 29, 65 are trapezoidal and taper in the conveying direction F. The convergence channel 11 is bounded by side walls 67 in the width direction of the starting material. The side walls 67 run towards one another in the conveying direction F. The boundary walls 29, 65 and the side walls 67 bound the convergence channel 11 in the operating position. As a result, starting material entering the forming station 7 in the conveying direction F is initially received via a boundary wall 65 on which the starting material is guided, in particular supported in the direction S of starting material thickness. This boundary wall 65 can also be referred to as a guide wall 65 or mounting plate 65 . Due to the course of the convergence channel, which tapers in the conveying direction F, longitudinal edge strips of the starting material are folded in on the side walls 67 in the direction S of the thickness of the starting material. To support this turning, the side walls 67 are concavely curved on their side facing the convergence channel 11 . The radius of curvature is indicated with the arrow r. As they continue through the convergence channel, the tucked-in longitudinal edge strips may, in less preferred embodiments, abut the boundary wall 29 where they are rolled back in the opposite direction of starting material thickness, so that crumple cavities form. In the embodiment shown here, this bumping is avoided by sections 99 of the side walls protruding into the guide channel, which guide the longitudinal edge strips directly to folding cheeks 73, on which the longitudinal edge strips then move in the opposite direction of the starting material thickness S be rolled back. In particular, the side walls 67 are designed in the form of sections of a hollow cylinder. The casing section 99 of the side walls 67 in the form of a hollow cylinder section protrudes inward in the starting material width direction B beyond the outer edge 113 of the adjustable boundary wall 29 and into the convergence channel 11 .

In the embossing and/or perforation station 13 following the forming station, the folded longitudinal edge strips are then connected to a central area of the starting material.

The first aspect of the present invention can be based in particular on the 4 until 14 be clarified. Therein, the forming stations 7 each have a boundary wall 29 that extends from an operating position ( 4 , 5 , 6 , 10 , 11 , 13 and 14 ), in which the starting material is transversely compressed as it is conveyed through, as described above, and a release position ( 7 , 8A , 8B and 9 ) is adjustable. As can be seen from the figures, it is preferably a pivotable boundary wall 29, which can also be referred to as a cover. The forming station 7 has a conveyor device in order to withdraw the starting material from the starting material supply 3 . The conveying device has at least one drive means 31, 35 which is rotatably mounted on the adjustable boundary wall 29 and can be moved transversely to the conveying direction F, in particular in the direction S of the thickness of the starting material, when the boundary wall 29 is in the operating position.

In 5 the mobility of the at least one drive means 31, 35 attached to the adjustable boundary wall 29 is realized by a relative mobility to the boundary wall 29 (indicated by arrow 89). This is ensured by a spring 41 between the at least one drive means 31, 35 and the boundary wall 29. A detailed view of the suspension 41 is den 11 and 12 removable. Therein, the at least one rotatably mounted drive means 31, 35 has two drive wheels 31 which are connected to one another via a wheel shaft 43. The wheel shaft 43 is supported in a translatory manner in the direction S of the starting material thickness. In 11 the translational mounting is realized via two U-shaped bearings 45, between the legs of which the wheel shaft 43 is translationally movable. As a result, the feed wheels 31 are also movable in the direction S of the starting material thickness in the operating position.

How in particular 12 can be removed, a spring 47 is arranged between the U-shaped bearings 45 and the wheel shaft 43, which is compressed as a result of a displacement of the wheel shaft 43 in the starting material thickness direction S and thereby provides a spring force. How in particular 11 can be removed, the springs 41 are preferably spaced apart from one another in the direction of the width of the starting material and/or spaced less than 20 mm, 15 mm, 10 mm, 5 mm, 3 mm or 1 mm from a feed wheel 31 in the direction of the width of the starting material. As a result, the wheel shaft 43 can assume an inclined position when the starting material thickness varies in the starting material width direction. As a result, the fluctuation in the starting material thickness can be compensated for and, in particular, the risk of material blockages can be reduced.

As an alternative to the mobility of the at least one rotatably mounted drive means 31, 35 by means of suspension 41, this could be implemented via a slotted guide of the adjustable boundary wall, which allows a movement, in particular a pivoting movement, of the boundary wall from the release position to the operating position and vice versa and in the operating position a translational movement allowed transverse to the conveying direction.

As described above, the forming station 7 can have a pressing device which presses the at least one rotatably mounted drive means 31, 35 against the starting material in the operating position of the adjustable boundary wall 29 to form a force-transmitting contact with the starting material. The force transmission contact can be provided by a spring force acting on the starting material from the at least one drive means. This can be done, for example, via the suspension 41 described above. The at least one rotatably mounted drive means 31 can be movably mounted such that when the adjustable boundary wall 29 is moved into the operating position, it executes a relative movement 89 that tensions the at least one spring 47 in the direction S of the starting material thickness, so that the at least one spring 47 generates a spring force via the drive means 31 exerted on the starting material. For this purpose, the adjustable boundary wall 29 can first be moved into the operating position, for example by a person by pressing in the direction of the guide wall 65, against a restoring force provided by the at least one spring 47 and then in the operating position via a connecting element 49, 51, 53, 55 be fixed.

As an alternative to a spring 47, the force transmission contact can also be provided by deformation restoring forces from conveyor wheels 31, 33 or conveyor rollers 35, 37 braced against one another in the operating position.

An example of connecting elements 49, 51 is in 5 shown. Therein, a tab 49 of the adjustable boundary wall 29 encompasses a nose 51 of a fastening section 91 on the guide wall side, which extends in the direction S of the starting material thickness, so that the adjustable boundary wall 29 is held in the operating position.

Alternative connecting elements 53, 55 are in 10 shown. Therein, a bolt 53 is attached to a fastening section 93 extending in the starting material thickness direction S, in particular fastening section 93 on the cover side, of the adjustable boundary wall 29 . When the adjustable boundary wall 29 is moved from the release position into the operating position, the bolt 53 engages in a connecting link recess 55 of a fastening section 93 on the guide wall side. In the present case, the link recess 55 is designed as a curved link, in particular as a J-shaped link 55 . This initially extends back in the starting material thickness direction S, then in the conveying direction F and finally in the opposite starting material thickness direction S. As a result, the adjustable boundary wall 29 can first be displaced in the starting material thickness direction S and then in the conveying direction F along the connecting link recess 55 . In the conveying direction F, the movement is then limited by the connecting link running in the opposite direction S of the starting material thickness, which enables the bolt 53 to catch. In particular, the bolt 53 is pushed by the restoring force of the spring 47 into the section of the link recess 55 running in the opposite direction S of the starting material thickness. This can prevent the adjustable boundary wall from moving from the operating position to the release position on its own. To move into the release position, the boundary wall 29 must first be pressed down against the restoring force of the spring and then moved in the opposite direction to the conveying direction F, where the spring force then supports the displacement of the boundary wall 29 into the release position.

The at least one drive means 31, 35 rotatably mounted on the adjustable boundary wall can have, for example, two drive means, in particular drive wheels 31, which are at the same height in the conveying direction F and spaced apart from one another in the width direction B of the starting material ( 8a , 8a , 11 and 15a) . Alternatively, the at least one rotatably mounted drive means 31, 35 can be designed as a conveyor roller 35 ( 13 , 14 and 15b) .

In all of the figures shown, the at least one drive means 31, 35 rotatably mounted on the adjustable boundary wall 29 can be rotated freely, in particular when idling. In order to pull off the starting material, the conveyor device in the illustrated embodiments therefore additionally has at least one drive means 33, 37 driven by a motor 39. The at least one driven drive means can also have at least two drive wheels 33 which, in the operating state, are arranged opposite the at least two drive means 31 in the direction of the thickness of the starting material ( 11 ). Alternatively, the at least one driven drive means 33, 37 can be a feed roller 37 which, in the operating state, is arranged opposite the freely rotatable feed roller 35 in the starting material thickness direction S ( 13 and 14 ). Two rotatable drive means lying opposite one another in the operating position form a pair of rotatably mounted drive means.

Like the 11 , 13 and 14 can be removed, when there are pairs of rotatable drive means, the at least one drive means 31, 35 attached to the adjustable boundary wall 29 preferably has a smaller radius than the drive means 30, 37, which is mounted on the opposite boundary wall 65 in the starting material thickness direction S.

The second aspect of the present is particularly when comparing the 6 and 7 evident. Therein, the pivot axis 57 of the boundary wall 29 is arranged on an end portion 95 of the boundary wall 29 downstream in the conveying direction, where it extends in the direction B of the thickness of the starting material. How in particular 7 can be removed, an intervention into the convergence channel 11 from the conveying direction upstream end of the boundary wall 29 can thereby be guaranteed.

The pivotable mounting of the boundary wall 29 is implemented here via a hinge 59 . The hinge 59 has two hinge members 61, 63 which can be pivoted relative to one another. A hinge member 61 is attached to the boundary wall 29, in particular screwed. The other hinge member 63 is attached to the embossing and/or perforation station 13, in particular screwed. The hinge 59 , in particular the hinge members 61 , 63 , is preferably attached to the side of the boundary wall 29 facing away from the convergence channel 11 .

How in particular 11 can be removed, the conveyor preferably has a motor 39, via which the drive means attached to the guide wall 65, here two conveyor wheels 33, are driven. A transmission 97 is provided between the motor 39 and the conveyor wheels 33 . In contrast, the drive means attached to the boundary wall 29, here conveyor wheels 31, are freely rotatably mounted. In the operating position, the feed wheels 31 and 33 are braced against one another to form a power transmission contact. As in 11 indicated, the feed wheels 31, 33 are deformed in the process, as a result of which an elastic restoring force is provided, which increases the reliability of the intake of starting material.

As for example in 11 shown, the device 1, in particular the forming station 7, has two screens 111 running towards one another in the conveying direction F, which together with the guide wall 65 form a housing for the at least one drive means 33 and the motor 43 as well as the gear 97. in the in 11 illustrated embodiment, the panels 111 and the guide wall 65 are formed in one piece, in particular bent.

Like for example 4 and 5 can be removed, the forming station 7 preferably has two guide devices 69, 71 in the form of deflection rollers 69, 71 for the aligned feeding of the starting material into the forming station 7. In the operating position, a narrow gap can be formed between the two deflection rollers 69, 71, through which the starting material can be introduced into the forming station 7. The deflection rollers can in particular be freely rotatably mounted. 8th 12 shows an embodiment in which both deflection rollers 69, 71 are fastened to a fastening section 91 on the side of the guide wall. As a result, the deflection rollers 69, 71 remain close to one another, regardless of the position of the adjustable boundary wall 29. 9 12 shows an alternative embodiment in which one of the deflection rollers 69 is attached to the adjustable boundary wall 29. This allows the idler roller 69 to be spaced apart from the other idler roller 71 in the release position, facilitating both loading of stock material and clearing of jammed material.

Like the one in particular 8a , 8b and 13 can be removed, the forming station 72 has folding cheeks 73 running toward one another in the conveying direction F, around which longitudinal edge strips of the starting material that runs through the device 1 are folded. The folding cheeks 73 are tubular. How in particular 13 can be seen, the fold-over cheeks 73 preferably run parallel to the side walls 67. A distance is provided between the fold-over cheeks 73 and the side walls 67 in the starting material width direction B, which enables the longitudinal edge strips to be folded over between the fold-over cheeks 73 and the side walls 67. Like the one in particular 8a and 8b can be removed, the folding cheeks 73 are attached to the adjustable boundary wall 29 .

The third aspect of the present invention is based in particular on the 15a and 15b clarified, which differ only in that in 15a Conveyor wheels 31, 33 and in 15b Conveyor rollers 35, 37 are used. In the 15a and 15b the cover cheeks 73 are aligned with one another in such a way that an imaginary crossing point is a maximum of 30 mm away from the embossing and/or perforation zone in the upstream direction. The imaginary crossing point is indicated by the point of intersection 75 of the dashed lines. The embossing and/or perforation zone is indicated by the indicated axis of rotation 77 of two embossing and/or perforation wheels mounted at the same height in the conveying direction. The maximum distance, according to the invention, of the crossing point from the embossing and/or perforation zone 77 upstream in the conveying direction is identified by the letter f. According to a preferred embodiment, the maximum downstream distance of the crossing point from the embossing and/or perforation zone 77 is identified by the letter g. Furthermore, the angle at which the envelope cheeks 73 converge in the conveying direction F is identified by the reference symbol α. The distance in the stock width direction B between the turn-up flanges 73 at their downstream end is denoted by the letter h. The distance between the folding cheeks 73 and the guide wall 65 is in 5 marked with the letter i. The wall thickness of the guide wall is in 5 denoted by the reference symbol m and is preferably between 1 mm and 12 mm, more preferably between 2 mm and 8 mm, most preferably between 2.5 mm and 3.5 mm.

Like the one in particular 8a and 8b can be removed, preferably at least one, in particular two, recesses 79 are made in the guide wall 65, through which the drive means 33 protrude in sections into the convergence channel 11. As a result, the axes of rotation, in particular the drive shaft 81, of the drive means 33 can be arranged outside the convergence channel. In particular, this can prevent the starting material from getting caught up in the rotating part, such as the drive shaft 81 and the drive means 33, thus reducing the risk of material jamming. In particular, the drive shaft 81 of the at least one Fastened to the guide wall 65 by drive means 33 via two pivot bearings 109 .

Alternatively or additionally, as in the 8a and 8b shown an intermediate wall 83 between the adjustable boundary wall 29 and the guide wall 65 may be provided. The partition wall can form a limiting gap with a defined extent in the direction of the thickness of the starting material S, via which the extent of upset, in particular corrugated, starting material transverse to the conveying direction F, in particular in the direction of the thickness of the starting material S, can be limited between the partition wall 83 and the guide wall 65. The intermediate wall 83 can therefore also be referred to as a wave limiter 83 . The distance transverse to the conveying direction, in particular in the starting material thickness direction S, between the wave limiter 83 and the guide wall 79 is preferably 0.1 mm and at most 20 mm, particularly preferably at least 0.2 mm, 0.3 mm, 0.5 mm, 0. 7mm or 1.0mm and/or no more than 20mm, 15mm, 10mm, 8mm, 5mm, 3mm or 2mm, and is in 5 indicated by the reference k. Recesses 85 are made in the shaft limiter 83, via which the drive means 31 can extend into the limitation channel described above. At the in the 13 and 14 In the illustrated embodiments with drive rollers 35, 37, the recesses 79, 85 are adapted to the axial extension of the conveyor roller 35. How in particular 8b can be removed, the wave limiter 83 can be attached to the adjustable boundary wall 29 via spacers 41 in order to provide a mounting space for the drive means 31, 35 between the adjustable boundary wall 29 and the wave limiter. In the embodiment shown here, the spacers 41 act simultaneously as a rotary bearing and spring bearing for the drive means 31, 35. However, the function of the shaft limitation can alternatively or in addition to the partition 83 also be carried out by rods 87 extending in the conveying direction F, as in 8b indicated to be provided.

The length of the convergence channel 11 in the conveying direction F between the channel inlet, via which the starting material is drawn into the convergence channel 11, and the channel outlet, via which the transversely compressed starting material leaves the convergence channel 11, is in 5 indicated with the reference sign n and can also be referred to as the convergence channel length n. The extension of the wave limiter in the conveying direction F is in 5 indicated with the reference number o and can also be referred to as the wave limiter length. The wave limiter length o is preferably at least 10%, 20%, 30%, 40%, 50% or 60% and/or at most 70%, 80% or 90% of the convergence channel length n by at least 10%, 20% or 25% and/or at most 30%, 40% or 50% of the convergence channel length n in the opposite direction to the conveying direction F in 5 indicated by the reference p. As described above, the output area is preferably free of the wave limiter 83. In other words, the wave limiter 83 in the conveying direction F preferably extends at most to the upstream end of the output area in the conveying direction.

In 8a is the angle at which the side walls 67 run towards one another in the conveying direction F, indicated by the reference symbol β. How 8a can be inferred, the angle β at which the side walls 67 converge in the conveying direction essentially corresponds to the angle α at which the envelope cheeks 73 converge and/or the angle at which the convergence channel 11, the guide wall 65 and /or taper the adjustable boundary wall 29 in the conveying direction F in a trapezoidal manner.

In the 16 until 20 are different embodiments of the conveyor indicated schematically.

16 shows an embodiment in which at least one drive means is designed as a conveyor roller 35, 37. A conveyor roller 35, 37 is to be understood in particular as a drive means whose axial extent is greater than its radial extent. The jacket of the conveyor roller 35, 37 preferably extends in the starting material width direction B by at least 20%, 30%, 40%, 50%, 60%, 70% or 80% of the width extension of the convergence channel 11 at the height of the conveyor roller 35, 37 in the conveying direction.

17 shows an embodiment with two conveyor rollers 35, 37. Preferably, the added width extension of the shells of the two conveyor rollers in the starting material width direction B is at least 20%, 30%, 40%, 50%, 60%, 70% or 80% of the extension of the convergence channel in the conveying direction of the two conveyor rollers 35, 37.

18 shows an embodiment with at least three conveyor wheels 31, 33 which extend at the same height in the conveying direction and are spaced apart from one another in the direction B of the width of the starting material.

19 shows an embodiment with four conveyor wheels 31, 33, which form at least two conveyor double wheels, the distance in the starting material width direction B of the conveyor double wheels from each other is greater than the distance in the starting material width direction B between the feed wheels of each double feed wheel.

20 shows an embodiment with two conveyor wheels 31, 33, which are aligned with each other in the conveying direction F.

The features disclosed in the above description, the figures and the claims can be important both individually and in any combination for the implementation of the invention in the various configurations.

Reference List

1

contraption

3

stock of feedstock

5

sheet-like starting material

7

forming station

9

stand

11

convergence channel

13

Embossing and/or perforating station

15, 17

Embossing and/or perforating wheels

19

cutting station

21

cutting edge

23

dispenser

25, 27

continuous conveyor

29

adjustable / swiveling boundary wall / cover

31

Conveyor wheel on adjustable boundary wall

33

Impeller on guide wall

35

Conveyor roller on adjustable boundary wall

37

Conveyor roller on guide wall

39

engine

41

Suspension/Bearing/Spacers

43

wheel shaft

45

U-shaped bearing

47

Feather

49

tab

51

Nose

53

bolt

55

backdrop recess

57

pivot axis

59

hinge

61, 63

hinge link

65

Boundary wall / guide wall / base / mounting plate

67

sidewalls

69, 71

pulleys

73

envelope cheeks

75

crossing point

77

Axis of rotation of the embossing and/or perforating wheels

79

Recesses guide wall

81

drive shaft

83

Wave limiter / partition

85

Recesses in the partition wall

87

Rod

89

Mobility of the drive means

91

guide wall-side attachment section

93

cover-side fastening section

95

downstream end section of the boundary wall 29

97

transmission

99

Side wall section

100

packaging product

103, 105

crumple cavity

107

Central area / central zone of attachment and/or deformation

109

pivot bearing

111

bezels

113

outer edge of the lid

a

width of the packaging product

b

Vertical extension of the packaging product

c

length of the packaging product

i.e

Width of attachment and/or deformation zone

e

Vertical extension of the attachment and/or deformation zone

f

upstream distance of the crossing point

G

downstream distance of the crossing point

H

Downstream distance between the envelope cheeks

i

Distance between fold-over cheeks and guide wall

k

Distance between wave limiter and mounting plate

m

Wall thickness mounting plate

n

convergence channel length

O

wave limiter length

p

output area

right

Radius of curvature sidewall

a

Angle at which the folds of the folds converge

β

Angle at which the side walls converge

f

conveying direction

S

Feedstock Thickness Direction

B

feedstock width direction

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• EP 2711167 B1 [0004]
• GB 2549257 A [0005, 0006, 0008]
• GB2549257 [0006]

Claims (18)

Device (1) for mechanically producing a three-dimensional packaging product (100) from a web-like starting material (5), in particular paper starting material, comprising: a reshaping station (7) with a convergence channel (11) for transverse compression, in particular wrapping or rolling, of the starting material (5) wherein a boundary wall (29) of the convergence channel (11) can be adjusted, in particular pivoted, between an operating position in which the starting material (5) is transversely compressed as it is conveyed through, and a release position in which access to the convergence channel (11) is released , wherein the forming station (7) has a conveyor device for removing the starting material (5) from a starting material supply (3) that can be arranged upstream of the forming station, in particular a sleeveless starting material roll, characterized in that the conveyor device rotates at least one on the adjustable boundary wall (29). bar-mounted drive means (31, 35) which, in the operating position of the adjustable boundary wall (29), can be moved transversely to the conveying direction, in particular in the direction (S) of the thickness of the starting material. Device (1) after claim 1 , characterized in that the at least one drive means (31, 35) can be moved in the operating position relative to the adjustable boundary wall (29), in particular the mobility of the at least one drive means (31, 35) in the operating position being ensured by springing, in particular spring mounting, between the at least one drive means (31, 35) and the adjustable boundary wall (29). Device (1) after claim 1 or 2 , characterized in that the adjustable boundary wall (29) and the at least one drive means (31, 35) in addition to the adjustability, in particular pivotability, between the operating position and the release position has a further degree of freedom of movement within the operating position, in particular can be moved purely translationally, in particular wherein the mobility of the at least one drive means (31, 35) in the operating position is realized by a link guide of the adjustable boundary wall, which allows a movement, in particular a pivoting movement, of the adjustable boundary wall (29) from the release position to the operating position and vice versa and in the operating position a Translational movement transverse to the conveying direction (F) permitted. Device (1) according to one of Claims 1 until 3 , characterized in that the forming station (7) has a pressing device (41) which, in the operating position of the adjustable boundary wall (29), presses the at least one rotatably mounted drive means (31, 35) to form a force-transmitting contact with the starting material (5) against the Starting material (5) presses. Device (1) after claim 4 , characterized in that the force transmission contact is provided by a spring force acting on the starting material (5) from the at least one drive means (31, 35), in particular the spring force being provided by at least one spring system (41), in particular a spring bearing, which is prestressed in the operating position and/or by bracing the adjustable boundary wall (29) against another boundary wall of the convergence channel, in particular by means of connecting elements (49, 51, 53, 55), such as clamps (49, 51), screws or a link guide (53, 55), provided. Device (1) after claim 4 or 5 , characterized in that the power transmission contact is provided via an in particular electric, pneumatic or hydraulic drive, in particular the drive being designed in addition to moving the adjustable boundary wall (29) from the operating position to the release position and vice versa. Device (1) according to one of the preceding claims, characterized in that the conveyor device has at least one pair of rotatably mounted drive means (31, 33, 35, 37), in particular at least one pair of conveyor wheels (31, 33) or a pair of conveyor rollers (35, 37), which are braced against one another in the operating position to form a force transmission contact with the starting material (5) and are spaced apart from one another in the release position, the at least one drive means (31, 35) mounted on the adjustable boundary wall (29) being a drive means for the at least one drive means pair and preferably the other drive means (33, 37) of the at least one drive means pair is rotatably mounted on a boundary wall (65) lying opposite the adjustable boundary wall (29) in the direction of the thickness of the starting material. Device (1), in particular according to one of the preceding claims, for mechanically producing a three-dimensional packaging product (100) from a web-shaped starting material (5), in particular paper starting material, comprising: a forming station (7) with a convergence channel (11) for transversely compressing, in particular wrapping or rolling, the starting material (5), a boundary wall (29) of the convergence channel (11) being pivotable between an operating position in which the starting material (5) is transversely compressed as it is conveyed through, and a release position, in which access to the convergence channel is enabled, with the forming station (7) having a conveyor device with at least one rotatably mounted drive means (31, 33, 35, 37) for removing the starting material (5) from a starting material supply that can be arranged upstream of the forming station (7) in the conveying direction (3), in particular a sleeveless roll of starting material, characterized in that the pivot axis (57) of the boundary wall (29) is located at an end section (95) of the boundary wall (29) downstream in the conveying direction, transversely to the conveying direction (F), in particular in the width direction of the starting material (B ), extends. Device (1) according to one of the preceding claims, characterized in that the conveyor device has a motor (39) and at least one pair of rotatably mounted drive means (31, 33, 35, 37), wherein a drive means (33, 37) of the at least one pair of drive means is coupled to the motor (39) and the other drive means (31, 35) of the at least one pair of drive means is mounted so that it can rotate freely, in particular wherein the at least one drive means (31, 35) mounted on the adjustable, in particular pivotable, boundary wall (29) forms the freely rotatable drive means of the at least one pair of drive means and/or the drive means of the at least one pair of drive means coupled to the motor (39) is mounted on a boundary wall (65) opposite the adjustable boundary wall (29) in the starting material thickness direction (S). Device (1) according to one of the preceding claims, characterized in that the forming station (7) has at least one guide device (69), such as a slide bar or a deflection roller, for the aligned feeding of the starting material (5) into the forming station (7), which attached to the adjustable, in particular pivotable, boundary wall (29) of the forming station (7), in particular wherein the forming station (7) has a further guide device (71) for the aligned feeding of the starting material (5) via a guide device (69, 71 ) formed gap in the forming station (7), which is decoupled from the adjustable, in particular pivotable, boundary wall (29), in particular attached to a boundary wall (65) opposite the adjustable boundary wall (29) in the starting material thickness direction (S). Device (1) according to one of the preceding claims, characterized by a removal device (13) downstream of the forming station (7) in the conveying direction (F), in particular a stamping and/or perforation station (13), for removing the transversely compressed starting material (5) from the Forming station (7), in particular wherein the downstream conveyor device (13) is decoupled from the adjustable, in particular pivotable, boundary wall (29) or at least one drive means, in particular embossing and/or perforating wheel, of the downstream removal device is fastened to the adjustable boundary wall. Device (1), in particular according to one of the preceding claims, for mechanically producing a three-dimensional packaging product (100) from a web-shaped starting material (5), in particular paper starting material, comprising: - a forming station (7) with a convergence channel (11) for transverse compression , in particular wrapping or rolling, of the starting material (5) has two folding cheeks (73) running towards one another in the conveying direction (F), around which longitudinal edge strips of the starting material (5) running through the device can be folded, and - one of the forming station ( 7) embossing and/or perforation station (13) downstream in the conveying direction (F) with an embossing and/or perforation zone (77) in which the folded-over longitudinal edge strips are connected to a central area of the starting material (5), characterized in that - the envelope cheeks (73) are aligned with each other such that an imaginary crossing point (75) of the two envelope cheeks (73) is a maximum of 30 mm away from the embossing and/or perforation zone (77) upstream in the conveying direction. Device (1) after claim 12 , characterized in that the crossing point (75) upstream of the conveying direction at most 25 mm, 20 mm, 15 mm, 10 mm or 5 mm and/or downstream of the conveying direction at most 30 mm, 25 mm, 20 mm, 15 mm, 10 mm or 5 mm from the Embossing and / or perforation zone (77) is spaced. Device (1) after claim 12 or 13 , characterized in that the envelope cheeks (73) at an angle of at least 60 °, 70 °, 80 0 or 90 ° and / or at most 170 °, 150 °, 130 ° or 110 ° to run towards each other, and / or that the folding cheeks (73) at its downstream end in the stock width direction (B) are spaced from each other by at least 5 mm, 10 mm or 15 mm and/or at most 40 mm, 30 mm or 25 mm. Device (1) according to one of Claims 12 until 14 , characterized in that the folding cheeks (73) in the starting material thickness direction (S) by at least 4 mm and/or at most 20 mm, in particular by at least 6 mm and/or at most 16 mm, preferably between 8 mm and 12 mm, from a boundary wall ( 65), in particular the guide wall, of the convergence channel (11) are spaced apart. Device (1) according to one of Claims 12 or 15 , characterized in that the folding cheeks (73) are attached to a boundary wall (29) of the convergence channel (11) which can be adjusted between an operating position in which the starting material (5) is transversely compressed as it is conveyed through, and a release position in which a Access to the convergence channel is released. System, comprising a device (1) according to one of the preceding claims and a supply of starting material (3) arranged in particular upstream of the device in the conveying direction, in particular a roll of starting material, in particular in the form of a sleeveless roll, or a leporello stack, with preferably a web-like starting material ( 5) extends from the supply of starting material, in particular from the outer circumference of the roll of starting material, into the forming station (7). Packaging product (100) made from a web-shaped starting material (5), in particular paper starting material, by means of one of Claims 1 until 16 trained device (1) or after Claim 17 formed system and/or whose width (a) measured transversely to the longitudinal direction of the web is less than 12 cm and/or whose length (c) in the longitudinal direction of the web is less than 30 cm.

Images