Pressing and separating device, and system for converting a web-shaped starting material into packaging pouches

Abstract

The present invention relates to a pressing and separating device for a system for converting a web-shaped starting material into packaging pouches, said starting material defining a web longitudinal direction, extending between two longitudinal edges that are opposite one another in the web width direction, and being made in particular of paper, cardboard or paperboard. The system comprises: a forming device for continuously forming the web-shaped starting material into a material web having a V- or U-shaped cross-section; and a receiving space that extends in the web longitudinal direction and is delimited by opposing V- or U-limbs of the material web. The pressing and separating device comprises a pair of pressing jaws consisting of two pressing jaws associated with one another, of which at least one pressing jaw can be moved relative to the other pressing jaw in order to press leading transverse edge portions of the V- or U-limbs against one another and separate a packaging pouch from the material web in the region of the pressed transverse edge portions, at least one of the pressing jaws being spring-mounted in the direction of movement of the at least one movable pressing jaw.

Description

[0001] Pressing and separating device and system for converting a web-shaped starting material into packaging bags

[0002] The present invention relates to a pressing and separating device for a system for converting a web-shaped starting material into packaging bags, as well as to such a system. A web-shaped starting material defines a web longitudinal direction and extends between two opposite longitudinal edges. The web-shaped starting material preferably consists of paper, cardboard, or paperboard.

[0003] Packaging bags, a packaging material web, and packaging material blanks are known from DE io 2020 114211 Ai. Such packaging bags, etc., are used in the packaging industry to package objects, especially shipping items, especially to protect them from damage during shipping.

[0004] Various systems are known for forming packaging pockets from flat packaging material webs for holding objects such as shipping items, a formed packaging material web and packaging material blanks.

[0005] GB 1,067,166 describes a system for packaging objects in which a weldable starting web material such as polyethylene or polypropylene is processed and guided through an infeed channel defined by side walls transverse to the web's longitudinal direction. The infeed channel is dimensioned only for a specific type of similar shipping item. At the end of the infeed channel, the edges of the web material are folded inward by a pair of folding lips and sealed with a first die to form a packaging material tube. A second die, arranged further downstream and movable in the vertical direction, seals the front and rear edges of the tube in the web's longitudinal direction by clamping the edges between two sealing jaws.The system also includes a cutting device for separating the produced and filled packaging bags, which moves horizontally in a translatory manner, i.e., transversely, to the length of the tube, similar to a jigsaw. From an ecological perspective, it is desirable to avoid weldable plastic material webs. In the system according to GB 1,067,166, the complex design of the sealing device on the one hand and the cutting device on the other hand has proven to be particularly disadvantageous.

[0006] A simplified sealing and cutting unit for separating packaging pockets is known from EP 3168362 Ai. However, the sealing-cutting unit is very inflexible and comprises a protruding blade that moves into a recess of a counter-bearing to separate a packaging pocket. The applied pressing and cutting force is always constant and cannot be varied or adjusted, for example, to respond to different resistances of the web materials used. Furthermore, it has been found that the web material can stick in the recess of the counter-bearing, which can damage the packaging pockets and pose a risk of process jams.

[0007] It is an object of the invention to overcome the disadvantages of the prior art, in particular to provide a more flexibly usable pressing and separating device for a system for converting a web-shaped starting material into packaging bags and a more flexibly usable, wherein in particular the sealing and separating process is more reliable.

[0008] This problem is solved by the subject matter of the independent claims.

[0009] Accordingly, a pressing and separating device is provided for a system, in particular according to the invention, for converting a web-like starting material into packaging bags, wherein the starting material defines a web longitudinal direction and extends between two longitudinal edges opposite in the web width direction. In particular, the starting material comprises, in particular predominantly, i.e., at least 75%, in particular at least 80%, preferably at least 90%, paper, cardboard, or paperboard, or consists thereof. The pressing and separating device can also be referred to as a sealing unit and / or forms a functional combination of sealing and separating or singling.When the pressing and separating device according to the invention is incorporated into a system in particular according to the invention, the manufacturing advantages arise that during a separation or singling process of a packaging pocket running in the longitudinal direction of the web, both the trailing end of the packaging pocket to be separated and the leading end of the trailing, pre-formed material web, which in turn forms the leading end of the trailing, packaging pocket to be separated, are formed, i.e. separated and sealed, at the same time.

[0010] Web-shaped material or web material, like the starting material, has a longitudinal web direction. The web-shaped material preferably has a constant web / material thickness. Web-shaped material generally expands in the web width direction transversely to the longitudinal web direction and, viewed transversely to the web direction, in particular has a constant width. In the web width direction, the web-shaped material has opposite longitudinal edges. In the web width direction, the packaging material web ends at a respective longitudinal edge extending in the web longitudinal direction. For example, the web-shaped starting material has a width of at least 200 mm and in particular of at most 2000 mm. For example, the width is approximately 500 mm.Web-shaped material generally has much larger dimensions in the web longitudinal direction than in the web width direction, for example, the extent of the web material in the web longitudinal direction can be at least 20 times, at least 50 times, at least 100 times, or at least 1000 times greater than in the web width direction. Web-shaped material generally has much larger dimensions in the web width direction than in the thickness direction, for example, the extent of the web material in the web width direction can be at least 20 times, at least 50 times, at least 100 times, or at least 1000 times greater than the web / material thickness. Optionally, at least one longitudinal edge strip adjacent to a longitudinal edge is provided, at least in sections, with a cold-sealable adhesive. The adhesive width of the longitudinal edge strip provided with cold-sealable adhesive can be at least 10 mm and in particular at most 300 mm, 250 mm, or at most 200 mm.For example, both opposite longitudinal edges can be provided with cold-sealable adhesive.

[0011] The web-shaped material is preferably formed predominantly or entirely from a cellulose-based material. In particular, the web-shaped material can be formed from paper, such as recycled paper, and / or cardboard, in particular corrugated cardboard. Preferably, a web-shaped material is provided in particular from paper, cardboard, or paperboard, in particular corrugated cardboard. The material web can be made from paper, such as recycled paper, and / or 100% recyclable paper, which can be produced without chemical ingredients. Recycled paper is, in particular, paper materials with a low proportion (less than 50%) of paper material containing virgin fibers. For example, paper materials containing 70% to 100% recycled paper, in particular based on waste paper, are used.The recycled paper within the meaning of this invention can be paper material that can have a tensile strength index along 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 across the machine direction of at most 60 Nm / g, preferably a tensile strength of 5 Nm / g to 40 Nm / g. To determine the tensile strength or the tensile strength index, a standard such as DIN EN ISO 1924-2 or DIN EN ISO 1924-3 can be used. In addition, 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 bursting index of at most 3.0 kPa*m. A 2 / g, preferably with a burst index of 0.8 kPa*m A 2 / g to 2.5 kPa*m A2 / g. The bursting index is determined according to DIN EN ISO 2758. Furthermore, the packaging material has a mass per unit area of ​​40 g / m A 2 to max. 140 g / m A 2. The web-shaped starting material can be in the form of a roll of material or a zigzag-folded stack of packaging material, which is also called a Leporello stack.

[0012] The system comprises a forming device for continuously forming the web-shaped starting material into a material web with a receiving space extending in the longitudinal direction of the web. The forming device is preferably designed or configured to transform the, in particular originally flat or two-dimensional, web-shaped starting material into a, in particular, three-dimensional material web with a V-shaped or U-shaped cross-section. Furthermore, the forming device comprises a receiving space extending in the longitudinal direction of the web and delimited by opposite V-shaped or U-shaped legs of the material web. Preferably, the receiving space for the material web has an insertion opening extending in the longitudinal direction of the web. In particular, the receiving space is delimited by a pocket base formed opposite the insertion opening and laterally by protruding wings of the material web. The material web can, for example, be formed with a V-shaped cross-section.The forming device can, for example, be designed to form an originally flat, web-shaped starting material by bending or folding at least one wing extending along a first (for example, right-hand in the conveying direction) or second (for example, left-hand in the conveying direction) longitudinal edge towards the other wing. Alternatively, the material web can be formed with a U-shaped cross-section. The forming device can be designed to bend or fold opposing wings on both opposite longitudinal edges of the originally flat, web-shaped starting material towards one another, forming a spine extending along the center of the web material. In the system for converting the web-shaped starting material, the forming device is preferably arranged downstream of a feed device in the conveying direction.

[0013] In particular, the forming device comprises at least one folding means, such as a folding roller, which can be brought or is brought into contact with the material web, such as rolling contact, sliding contact or the like. The folding means can in particular be designed and configured to press against the material web. The folding means can be arranged relative to at least one other means determining the conveying path of the web-shaped starting material or the material web, in particular at least one upstream, downstream, to the right or left of the conveying direction relative to the folding means, in such a way that the folding means, together with the at least one other means, causes a deformation of an originally flat web-shaped extension. In particular, the at least one other means determining the conveying path of the web-shaped starting material or the material web can also be brought into contact with the starting material orthe material web. The forming device comprises at least one folding means, such as a folding roller, which presses against the material web transversely to the longitudinal direction of the web between the opposite longitudinal edges in order to introduce two wings protruding from a pocket base into the web-shaped starting material. The folding means preferably presses against the material web in the web width direction, in particular centrally between the opposite longitudinal edges. According to a first aspect of the present invention, which can be combined with the second aspect and / or the other aspects, the pressing and separating device comprises a pair of pressing jaws consisting of two mutually assigned pressing jaws, of which at least one pressing jaw is movable relative to the other pressing jaw for pressing leading transverse edge sections of the V- or U-shaped legs against one another and for separating a packaging pocket from the material web in the region of the pressed ortransverse edge sections to be pressed. For example, both pressing jaws can be mounted so as to be movable relative to the other pressing jaw, with their direction of movement being opposite and / or coordinated with one another. The functional integration of pressing or sealing and severing or separating makes it possible to design the device according to the invention and thus also the entire system or the entire machine in a particularly compact manner. The coordination of pressing and severing in such a way that the severing takes place in the area of ​​the pressed transverse edge sections has the further advantage that the pressing supports the severing. In the sense of this aspect, it should also be understood that the pressing and severing take place essentially simultaneously. The pressing of the material web supports the material web being held or fixed in a stationary manner, so that the severing process can take place reliably.

[0014] According to the first aspect of the present invention, at least one of the pressing jaws, in particular the movable one, is spring-loaded in the direction of movement of the at least one movable pressing jaw. In other words, the at least one spring-loaded pressing jaw, in particular the two spring-loaded pressing jaws, can be designed to deflect or yield in the direction of movement of the at least one movable pressing jaw. This makes it possible to adjust, limit, and / or cushion the pressing and separating force to be transmitted, or in particular to build it up continuously. For example, the spring-loading of the at least one pressing jaw is achieved via a spring, in particular a helical compression spring, a disc spring, a leaf spring, or the like, which can in particular be made of spring steel. According to further exemplary embodiments, a gas spring or a hydraulic unit, for example with a nitrogen buffer, can also be used.These can be particularly advantageous for very large pressing and separating devices.

[0015] According to an exemplary embodiment of the present invention, the at least one spring-loaded pressing jaw is supported on a particularly elastic spring arrangement. The spring arrangement can comprise a helical compression spring, a disc spring, a leaf spring, or the like. According to further exemplary embodiments, a gas spring or a hydraulic unit, for example, with a nitrogen buffer, can also be used.

[0016] According to another exemplary embodiment, the spring arrangement is supported on an unsprung support. The support can, for example, be rigidly connected to the press jaws. The type and design of the spring arrangement allows the transfer of pressing force and deflection force to the material web to be adjusted or varied, so that, for example, the optimal sealing—i.e., pressing and separation—can be achieved for different materials of the material web.

[0017] According to another exemplary embodiment, the springing of the at least one spring-loaded pressing jaw is achieved by forming the pressing jaw from a particularly elastically flexible material. Suitable materials for the pressing jaw include, for example, elastic plastics, such as rubber or polyamide, or foams. In the context of this aspect, it is to be understood that the pressing jaw at least partially contains, in particular, elastically flexible material, i.e., encompasses the flexible material, but in particular consists of it.

[0018] According to a further aspect of the present invention, which can be combined with the preceding aspects and exemplary embodiments, a pressing and separating device is provided for a system in particular according to the invention for converting a web-compatible starting material into packaging pockets, wherein the starting material defines a web longitudinal direction and extends between two longitudinal edges opposite in the web width direction.

[0019] The system comprises a forming device for continuously forming the web-shaped starting material into a material web with a receiving space extending in the longitudinal direction of the web. The forming device is preferably designed or configured to transform the, in particular originally flat or two-dimensional, web-shaped starting material into a, in particular, three-dimensional material web with a V-shaped or U-shaped cross-section. Furthermore, the forming device comprises a receiving space extending in the longitudinal direction of the web and delimited by opposite V-shaped or U-shaped legs of the material web. Preferably, the receiving space of the material web has an insertion opening extending in the longitudinal direction of the web. In particular, the receiving space is delimited by a pocket base formed opposite the insertion opening and laterally by protruding wings of the material web. The material web can, for example, be formed with a V-shaped cross-section.The forming device can, for example, be designed to form an originally flat, web-shaped starting material by bending or folding at least one wing extending along a first (for example, right-hand in the conveying direction) or second (for example, left-hand in the conveying direction) longitudinal edge towards the other wing. Alternatively, the material web can be formed with a U-shaped cross-section. The forming device can be designed to bend or fold opposing wings on both opposite longitudinal edges of the originally flat, web-shaped starting material towards one another, forming a spine extending along the center of the web material. In the system for converting the web-shaped starting material, the forming device is preferably arranged downstream of a feed device in the conveying direction.

[0020] In particular, the forming device comprises at least one folding means, such as a folding roller, which can be brought or is brought into contact with the material web, such as rolling contact, sliding contact or the like. The folding means can in particular be designed and configured to press against the material web. The folding means can be arranged relative to at least one other means determining the conveying path of the web-shaped starting material or the material web, in particular at least one upstream, downstream, to the right or left of the conveying direction relative to the folding means, in such a way that the folding means, together with the at least one other means, causes a deformation of an originally flat web-shaped extension. In particular, the at least one other means determining the conveying path of the web-shaped starting material or the material web can also be brought into contact with the starting material orThe forming device comprises at least one folding means, such as a folding roller, which presses against the material web transversely to the web's longitudinal direction between the opposite longitudinal edges to insert two wings protruding from a pocket base into the web-shaped starting material. Preferably, the folding means presses against the material web in the web width direction, particularly centrally between the opposite longitudinal edges.

[0021] The pressing and separating device comprises a pair of pressing jaws consisting of two mutually associated pressing jaws, of which at least one pressing jaw is movable relative to the other pressing jaw for pressing the leading transverse edge sections of the V- or U-shaped legs against each other. For example, both pressing jaws can also be mounted so that they can move relative to the other pressing jaw, with their directions of movement being opposite and / or coordinated with each other.

[0022] According to a further aspect of the present invention, a cutting device is arranged on at least one pressing jaw and / or at least one pressing jaw is configured such that the cutting device is released, in particular continuously, when the pressing jaws are pressed against one another to separate a packaging pocket from the material web, and is in particular continuously retracted relative to the associated pressing jaw when the pressing jaws move away from one another. For example, the cutting device can be arranged on at least one pressing jaw such that the cutting device is released, in particular becomes visible, only during a pressing or separating process and is otherwise inaccessible, thus creating a reliable device.This can be achieved by a specific arrangement of the cutting device in relation to the pressing jaw, in particular both pressing jaws, and / or by a specific design of the at least one pressing jaw. One advantage of this design according to the invention is the compactness of the pressing and separating device and its safety against injuries. A further significant advantage of releasing and resetting the cutting device in relation to the pressing jaw is that the relative movement of the pressing jaw and cutting device, in particular in a direction parallel to the direction of movement of the at least one movable pressing jaw, strips off any web material that may have become caught on the cutting device. This stripping function makes it possible to avoid process bottlenecks and / or damage to the packaging pockets to be separated and / or the trailing material web.

[0023] In an exemplary embodiment of the pressing and separating device according to the invention, the at least one pressing jaw comprises two parallel, in particular identically designed, pressing jaw segments, which are arranged at a distance from one another to form a gap in which the cutting device is arranged. For example, the gap can be matched to a dimension of the cutting device, in particular its cutting edge, in particular such that the cutting device is guided by the two pressing jaw segments during release and retraction, in particular during extension and retraction, so that a precise severing cut can be made. The gap is, for example, significantly smaller than the dimension of the cutting device or the pressing jaw segments transversely to the gap, in particular in the web width direction.For example, the pair of press jaws thus comprises two pairs of press jaw segments, with one press jaw segment of each pair being arranged opposite one another with a press jaw segment of the other pair and being associated with each other in such a way that the respective press jaw segments come into contact during the cutting and pressing process. All press jaw segments as well as the cutting device can be oriented substantially parallel to each other and / or perpendicular to the longitudinal direction of the web.

[0024] According to an exemplary development of the pressing and separating device according to the invention, the additional pressing jaw comprises two pressing jaw segments identical to the at least one pressing jaw, which are arranged at a distance from one another to form a gap in which the cutting device can engage when the pressing jaws are pressed against one another, in particular to perform the separating pass. The gap and the arrangement of the respective pressing jaw segments can be configured according to the previously described exemplary embodiment with respect to the at least one pressing jaw.

[0025] For example, the pressing jaw segments of a pressing jaw can be made from a single piece or can be separate components. For example, it can further be provided, in the embodiment in which the pressing jaw segments are each separate components, that these can be separately spring-loaded. Furthermore, it is also possible for the embodiment in which the pressing jaw segments of a pressing jaw are separate components for them to be mounted by a common spring system. In yet another exemplary embodiment, at least one pressing jaw segment of one of the two pressing jaws is spring-loaded, wherein the two pressing jaw segments, in particular at least one pressing jaw segment, of the opposite pressing jaw is rigid, in particular unsprung, and / or is firmly connected to a support of the pressing and / or separating device.According to a further exemplary development of the present invention, at least one pair of pressing jaw segments of a pressing jaw, in particular of the pressing jaw which has the cutting-to-length device, is arranged relative to one another such that, when pressed against one another with the opposite pressing jaw, which can for example be of identical design, they displace one another in a direction transverse, in particular substantially perpendicular, to the direction of movement or pressing direction, whereby a gap is created or enlarged between the pressing jaw segments, such that the cutting-to-length device is in particular continuously released in order to carry out the cutting process. In an embodiment of the pressing and cutting device according to the invention which is easy to realize and implement, the pair of pressing jaws can be arranged on a particularly immovable base plate, wherein one pressing jaw can be fixed in a stationary manner to the base plate.The other pressing jaw is movable, for example mounted via a crank drive and / or a connecting rod joint, whereby, for example, pressure lift cylinders can also be used to carry out the sealing, ie the pressing and separation.

[0026] In a further exemplary embodiment of the pressing and separating device according to the invention, it is characterized by a passive state in which the pressing jaws release the material web and the cutting device protrudes by a maximum of 5%, in particular by a maximum of 3 mm, in particular by a maximum of 4%, a maximum of 3%, or a maximum of 2%, of its longitudinal extent in the direction of movement of the movable pressing jaw beyond a pressing surface of the associated pressing jaw facing the further pressing jaw. The pressing and separating device can furthermore have a final pressing state in which the cutting device protrudes by at least 10%, in particular by at least 12.5%, at least 15%, or at least 17.5% of its longitudinal extent in the direction of movement of the movable pressing jaw beyond the pressing surface. According to an exemplary further development, the cutting device is adjustable with respect to the pressing jaw associated with the current device.Alternatively or additionally, the respective pressing jaw can also be adjustable in relation to the cutting device, so that in both designs, different projections of the cutting device in relation to the pressing surface can be realized. It has been discovered that this type of adjustability can be adapted to the dimensions of the mailing bags to be separated. For example, it has been found that the mailing bags slide more easily between the pressing jaws without scraping or getting caught on the cutting devices, such as the cutting teeth, of the cutting device. Alternatively or additionally, the cutting device can also spring back during a pressing and separating process to release the cutting device.

[0027] According to a further exemplary development, the cutting device is released in that, when the pressing jaws are pressed against one another, the pressing jaw assigned to the cutting device is displaced, in particular elastically displaced, by the opposite pressing jaw. This allows for a particularly simple pressing and separating device to be realized, since the displacement of the opposite pressing jaw by the other pressing jaw essentially automatically causes the pressing and separating device to take over both pressing and separating. Furthermore, the deformation restoring force, which is in particular elastic, can provide the stripping function, which makes it possible to strip off any web material that has become stuck or generally prevent web material from getting stuck.

[0028] According to a further aspect of the present invention, which can be combined with the preceding aspects and exemplary embodiments, a pressing and separating device is provided for a system, in particular according to the invention, for converting a web-shaped starting material into packaging bags, wherein the starting material defines a web longitudinal direction and extends between two longitudinal edges opposite in the web width direction. In particular, the starting material comprises, in particular predominantly, i.e. at least 75%, in particular at least 80%, preferably at least 90%, paper, cardboard or paperboard or consists thereof. The pressing and separating device can also be referred to as a sealing unit and / or forms a functional union of sealing and separating or singling.When the pressing and separating device according to the invention is incorporated into a system in particular according to the invention, the manufacturing advantages arise that during a separation or singling process of a packaging pocket running in the longitudinal direction of the web, both the trailing end of the packaging pocket to be separated and the leading end of the trailing, pre-formed material web, which in turn forms the leading end of the trailing, packaging pocket to be separated, are formed, i.e. separated and sealed, at the same time.

[0029] The system comprises a forming device for continuously forming the web-shaped starting material into a material web with a receiving space extending in the longitudinal direction of the web. The forming device is preferably designed or configured to transform the, in particular originally flat or two-dimensional, web-shaped starting material into a, in particular, three-dimensional material web with a V-shaped or U-shaped cross-section. Furthermore, the forming device comprises a receiving space extending in the longitudinal direction of the web and delimited by opposite V-shaped or U-shaped legs of the material web. Preferably, the receiving space of the material web has an insertion opening extending in the longitudinal direction of the web. In particular, the receiving space is delimited by a pocket base formed opposite the insertion opening and laterally by protruding wings of the material web. The material web can, for example, be formed with a V-shaped cross-section.The forming device can, for example, be designed to form an originally flat, web-shaped starting material by bending or folding at least one wing extending along a first (for example, right-hand in the conveying direction) or second (for example, left-hand in the conveying direction) longitudinal edge towards the other wing. Alternatively, the material web can be formed with a U-shaped cross-section. The forming device can be designed to bend or fold opposing wings on both opposite longitudinal edges of the originally flat, web-shaped starting material towards one another, forming a spine extending along the center of the web material. In the system for converting the web-shaped starting material, the forming device is preferably arranged downstream of a feed device in the conveying direction.

[0030] In particular, the forming device comprises at least one folding means, such as a folding roller, which can be brought or is brought into contact with the material web, such as rolling contact, sliding contact or the like. The folding means can in particular be designed and configured to press against the material web. The folding means can be arranged relative to at least one other means determining the conveying path of the web-shaped starting material or the material web, in particular at least one upstream, downstream, to the right or left of the conveying direction relative to the folding means, in such a way that the folding means, together with the at least one other means, causes a deformation of an originally flat web-shaped extension. In particular, the at least one other means determining the conveying path of the web-shaped starting material or the material web can also be brought into contact with the starting material orThe forming device comprises at least one folding means, such as a folding roller, which presses against the material web transversely to the web's longitudinal direction between the opposite longitudinal edges to insert two wings protruding from a pocket base into the web-shaped starting material. Preferably, the folding means presses against the material web in the web width direction, particularly centrally between the opposite longitudinal edges.

[0031] According to a further aspect of the present invention, the pressing and separating device comprises a pair of pressing jaws consisting of two mutually associated pressing jaws, of which at least one pressing jaw is movable relative to the other pressing jaw for pressing leading transverse edge sections of the V- or U-shaped legs against each other and for separating a packaging pocket from the material web in the region of the pressed or to-be-pressed transverse edge sections. For example, both pressing jaws can also be mounted so as to be movable relative to the other pressing jaw, with their direction of movement being opposite and / or coordinated with one another. The functional integration of pressing or sealing and separating or singling makes it possible to design the device according to the invention, and thus also the entire system or machine, in a particularly compact manner.The coordination of pressing and cutting such that the cutting occurs in the area of ​​the pressed transverse edge sections also has the advantage that the pressing supports the cutting process. In this context, it should also be understood that the pressing and cutting processes essentially occur simultaneously. The pressing of the material web helps to hold the material web in place or fix it in a stationary position, allowing the cutting process to proceed reliably.

[0032] According to a further aspect of the invention, the pressing and separating device comprises a gear mechanism assigned to at least one of the pressing jaws for providing a pressing force to the pair of pressing jaws. For example, the gear mechanism can be a linear actuator or at least part of a linear actuator, which has a component, in particular a linearly movable component, as its working element and thereby provides the separating and pressing force for the pair of pressing jaws. In the sense of this aspect, it can also be understood that the gear mechanism is implemented by a compressed air cylinder, in particular in order to be able to provide a cost-effective pressing and separating device. In general, by providing a gear mechanism, a desired force transmission can be reliably achieved and / or a desired level of the force to be transmitted can be adjusted and / or varied. The gear mechanism therefore supports the provision of a flexibly usable pressing and separating device.

[0033] According to a further exemplary embodiment of the pressing and separating device according to the invention, the at least one movable pressing jaw is movable along a linear pressing and release movement direction. The linear pressing and release movement direction can also be referred to as an opening and closing movement. For example, the movement of the at least one movable pressing jaw occurs in such a way that it can transmit different drive forces for the pressing jaw depending on the progress of the movement. For example, the force required for an opening movement, i.e., a movement away from each other of the two pressing jaws, is smaller than for a closing movement, i.e., a movement towards each other of the two pressing jaws, at least in the state of press contact between the two pressing jaws. For example, the gear can be coupled to a linear drive.According to a further exemplary development of the pressing and separating device according to the invention, the gear is designed to convert the mechanical work performed by a power source, such as a motor, in particular a rotary motor, into a particularly linear pressing and release movement direction of the at least one movable pressing jaw.

[0034] In a further exemplary embodiment of the present invention, the transmission has a non-linear force transmission function. For example, the transmission is configured to adjust the pressing force imparted to the pair of pressing jaws depending on the operating state, in particular the angular position of a transmission output shaft, of the pressing and separating device. By means of the non-linear force transmission function, the operating state-dependent force exerted by the pressing jaws can be adjusted and ensured. For example, the contact force is largely determined by the spring arrangement. The stroke of the transmission always remains the same or depends on the dimension of the eccentric / crank deflection. The contact force itself depends on the counter-force of the springs. The pressing force can be adjusted so that at the end of the pressing process, the pressing surfaces of the pressing jaws have a surface load of 100,000 N / m 2 experienced (or converted to 0.1 N / mm2 or i bar). Through the interaction of spring rate, spring preload, and spring travel, it is possible to set the desired pressing forces, for example, depending on the material of the web.

[0035] In another exemplary embodiment, the transmission comprises a coupling mechanism, in particular with a double, centrically acting slider crank, particularly similar to a boxer engine, a toggle joint, a cam plate, a plurality of cams, and / or a cam plate. In particular, the coupling mechanism based on a double, centrically acting slider crank has proven to be efficient and practical with regard to manufacturing costs, system complexity, and usability in a system based on two, particularly counter-rotating, press jaws.

[0036] In a further exemplary embodiment of the pressing and separating device according to the invention, the gear is coupled to a power source, such as a motor, in particular a rotary motor, via an intermediate gear, such as a worm gear, spur gear, planetary gear, or bevel gear, for the linear adjustment of the speed-torque ratio. The inventors of the present invention have discovered that, while accepting a slightly reduced efficiency, the provision of an intermediate gear can be advantageous in terms of installation space and costs. In principle, it is also conceivable to provide a direct drive, a so-called torque motor. According to a further exemplary embodiment, the pressing jaws comprise metal, in particular steel, aluminum, or bronze, or wood, plastics, or other materials; in particular, they are made of the respective materials.

[0037] According to a further aspect of the present invention, which can be combined with the preceding aspects and exemplary embodiments, a system is provided for converting a web-shaped starting material into packaging bags, wherein the starting material defines a web longitudinal direction and extends between two longitudinal edges opposite in the web width direction. In particular, the starting material comprises, in particular predominantly, i.e. at least 75%, in particular at least 80%, preferably at least 90%, paper, cardboard, or paperboard or consists thereof. The pressing and separating device can also be referred to as a sealing unit and / or forms a functional union of sealing and separating or singling.When the pressing and separating device according to the invention is incorporated into a system in particular according to the invention, the manufacturing advantages arise that during a separation or singling process of a packaging pocket running in the longitudinal direction of the web, both the trailing end of the packaging pocket to be separated and the leading end of the trailing, pre-formed material web, which in turn forms the leading end of the trailing, packaging pocket to be separated, are formed, i.e. separated and sealed, at the same time.

[0038] Web-shaped material or web material, like the starting material, has a longitudinal web direction. The web-shaped material preferably has a constant web / material thickness. Web-shaped material generally expands in the web width direction transversely to the longitudinal web direction and, viewed transversely to the web direction, in particular has a constant width. In the web width direction, the web-shaped material has opposite longitudinal edges. In the web width direction, the packaging material web ends at a respective longitudinal edge extending in the web longitudinal direction. For example, the web-shaped starting material has a width of at least 200 mm and in particular of at most 2000 mm. For example, the width is approximately 500 mm.Web-shaped material generally has much larger dimensions in the web longitudinal direction than in the web width direction, for example, the extent of the web material in the web longitudinal direction can be at least 20 times, at least 50 times, at least 100 times, or at least 1000 times greater than in the web width direction. Web-shaped material generally has much larger dimensions in the web width direction than in the thickness direction, for example, the extent of the web material in the web width direction can be at least 20 times, at least 50 times, at least 100 times, or at least 1000 times greater than the web / material thickness. Optionally, at least one longitudinal edge strip adjacent to a longitudinal edge is provided, at least in sections, with a cold-sealable adhesive. The adhesive width of the longitudinal edge strip provided with cold-sealable adhesive can be at least 10 mm and in particular at most 300 mm, 250 mm, or at most 200 mm.For example, both opposite longitudinal edges can be provided with cold-sealable adhesive.

[0039] The web-shaped material is preferably formed predominantly or entirely from a cellulose-based material. In particular, the web-shaped material can be formed from paper, such as recycled paper, and / or cardboard, in particular corrugated cardboard. Preferably, a web-shaped material is provided in particular from paper, cardboard, or paperboard, in particular corrugated cardboard. The material web can be made from paper, such as recycled paper, and / or 100% recyclable paper, which can be produced without chemical ingredients. Recycled paper is, in particular, paper materials with a low proportion (less than 50%) of paper material containing virgin fibers. For example, paper materials containing 70% to 100% recycled paper, in particular based on waste paper, are used.The recycled paper within the meaning of this invention can be paper material that can have a tensile strength index along 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 across the machine direction of at most 60 Nm / g, preferably a tensile strength of 5 Nm / g to 40 Nm / g. To determine the tensile strength or the tensile strength index, a standard such as DIN EN ISO 1924-2 or DIN EN ISO 1924-3 can be used. In addition, 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 bursting index of at most 3.0 kPa*m. A 2 / g, preferably with a burst index of 0.8 kPa*m A 2 / g to 2.5 kPa*m A2 / g. The bursting index is determined according to DIN EN ISO 2758. Furthermore, the packaging material has a mass per unit area of ​​40 g / m A 2 to max. 140 g / m A 2. The web-shaped starting material can be in the form of a roll of material or a zigzag-folded stack of packaging material, which is also called a Leporello stack.

[0040] The system comprises a forming device for continuously forming the web-shaped starting material into a material web with a receiving space extending in the longitudinal direction of the web. The forming device is preferably designed or configured to transform the, in particular originally flat or two-dimensional, web-shaped starting material into a, in particular, three-dimensional material web with a V-shaped or U-shaped cross-section. Furthermore, the forming device comprises a receiving space extending in the longitudinal direction of the web and delimited by opposite V-shaped or U-shaped legs of the material web. Preferably, the receiving space of the material web has an insertion opening extending in the longitudinal direction of the web. In particular, the receiving space is delimited by a pocket base formed opposite the insertion opening and laterally by protruding wings of the material web. The material web can, for example, be formed with a V-shaped cross-section.The forming device can, for example, be designed to form an originally flat, web-shaped starting material by bending or folding at least one wing extending along a first (for example, right-hand in the conveying direction) or second (for example, left-hand in the conveying direction) longitudinal edge towards the other wing. Alternatively, the material web can be formed with a U-shaped cross-section. The forming device can be designed to bend or fold opposing wings on both opposite longitudinal edges of the originally flat, web-shaped starting material towards one another, forming a spine extending along the center of the web material. In the system for converting the web-shaped starting material, the forming device is preferably arranged downstream of a feed device in the conveying direction.

[0041] In particular, the forming device comprises at least one folding means, such as a folding roller, which can be brought or is brought into contact with the material web, such as rolling contact, sliding contact or the like. The folding means can in particular be designed and configured to press against the material web. The folding means can be arranged relative to at least one other means determining the conveying path of the web-shaped starting material or the material web, in particular at least one upstream, downstream, to the right or left of the conveying direction relative to the folding means, in such a way that the folding means, together with the at least one other means, causes a deformation of an originally flat web-shaped extension. In particular, the at least one other means determining the conveying path of the web-shaped starting material or the material web can also be brought into contact with the starting material orThe forming device comprises at least one folding means, such as a folding roller, which presses against the material web transversely to the web's longitudinal direction between the opposite longitudinal edges to insert two wings protruding from a pocket base into the web-shaped starting material. Preferably, the folding means presses against the material web in the web width direction, particularly centrally between the opposite longitudinal edges.

[0042] The system according to the invention also comprises a pressing and separating device arranged downstream of the forming device and designed according to one of the aspects of the invention or exemplary embodiments for simultaneously pressing leading transverse edge sections of the V- or U-legs against one another and separating a packaging pocket from the material web in the region of the pressed transverse edge sections.

[0043] According to a further aspect of the present invention, which can be combined with the preceding aspects and exemplary embodiments, a packaging technology production station is provided comprising a system designed according to the invention and a supply of web-shaped starting material that defines a web longitudinal direction and extends between two longitudinal edges opposite one another in the web width direction, in particular made of paper, cardboard, or paperboard, such as corrugated cardboard, from which the system can withdraw the starting material. In other words, the system is configured to withdraw starting material from the supply of starting material.

[0044] Preferred embodiments are specified in the subclaims.

[0045] In the following, further properties, features and advantages of the invention will become clear from the description of preferred embodiments of the invention with reference to the accompanying exemplary drawings, in which:

[0046] Figure i shows an exemplary embodiment of a system according to the invention for converting a web-shaped starting material into packaging bags;

[0047] Figure 2 shows the system from Figure 1 in another view;

[0048] Figure 3 shows an exemplary embodiment of a pressing and separating device according to the invention;

[0049] Figures 4 and 5 show the pressing and separating device from Figure 3 in further operating states;

[0050] Figures 6 and 7 show further schematic diagrams of the functioning of an exemplary embodiment of the pressing and separating device according to the invention; and

[0051] Fig. 8-10 schematic principle sketches of an exemplary embodiment of a packaging bag produced by means of a system according to the invention.

[0052] To simplify readability, the following description of preferred embodiments of the various aspects of the invention, which can be implemented individually or combined, uses the same or similar reference numerals for the same or similar components of different embodiments of pressing and separating devices, as well as systems for converting a web-like starting material into packaging bags. Those skilled in the art will understand that, although the exemplary embodiments of a system described below sometimes embody several combined aspects of the invention, the various aspects can each be implemented individually or in any combination with one another.A system according to the invention for converting a web-shaped starting material, which defines a web longitudinal direction and extends between two longitudinal edges opposite in the web width direction, into packaging pockets is generally designated by the reference symbol too. The web-shaped starting material i is preferably formed from or consists of cardboard, paperboard, or paper. In addition to cardboard or paper, the starting material i may comprise an adhesive or the like for sealing the packaging pockets ii to be formed.

[0053] As shown in Figure 1 or 2, the web-shaped starting material i for the system 100 can be provided as a material web supply 2, for example in the form of a supply roll. The material web supply 2 is preferably arranged near the ground so that even heavy, large material web supplies 2 can be used without cranes or similar lifting aids. Instead, for example, a mobile support frame 20 can be used for a material web supply 2, as can be seen in Figure 2. The support frame 20 itself can be mechanically coupled to the system 100, for example, plugged on, snapped into, screwed into, or clipped into place, in order to establish an optimized alignment of the web-shaped starting material 1 relative to a feed device 110. The web-shaped starting material 1 rolled up to form the material web supply 2 has a web width direction B.The extension of the starting material 1 in the web width direction B corresponds to the cylinder height of the roll-shaped material web supply 2. The opposite, circular base surfaces of the roll-shaped or cylindrical material web supply 2 are formed by opposite longitudinal edges 6 of the starting material web 1. To form the roll-shaped material web supply 2, the starting material web 1 is wound in the direction of its web longitudinal direction L.

[0054] The system 100 and, if applicable, the support frame 20 stand on a surface, such as a hall floor, that extends essentially horizontally. A vertical direction V extends orthogonally across this surface in the direction of gravity.

[0055] To process the web-shaped starting material 1 into a plurality of packaging pockets 11 by the system 100, the starting material web 1 is guided through the system 100 in a conveying direction corresponding to its longitudinal direction L, and is pulled through it, thereby unwound from the roll-shaped material web supply 2. Within the various components of the system 100, the local conveying direction along which the web-shaped material 1 is moved can be variable with respect to the vertical direction V as well as with respect to a horizontal direction.The conveying path of the starting material web i through the system 100 according to the embodiments illustrated by way of example in Figure 1 or 2 generally runs (in successive order according to the following list of system components) from a material web supply 2 through a feed device no, along a tensioning means, such as a support roller, to a deflection, such as a deflection roller 120, and then to a forming device 130 and a subsequent feeding device 150 and further to a conveying device 170 and a pressing and separating device 180, in particular according to the invention.

[0056] In the embodiments illustrated here as examples, the web-shaped starting material 1 extends essentially flat, in particular in a horizontal direction, from the material web supply 2 to the deflection roller 120 in the web width direction B. Starting from the deflection, the web-shaped starting material 1 is formed in the forming device 130 into a material web with a V-shaped or U-shaped cross-section and a receiving space extending in the web longitudinal direction L. The receiving space is delimited on the one hand by a pocket base and on both sides thereof by wings protruding transversely to the conveying direction and / or web longitudinal direction L and extends in the web longitudinal direction L. From the forming device 130, the starting material web 1, pre-formed into a material web with a V-shaped or U-shaped cross-section, is transferred to the feeding device 150.The loading device 150 has a loading opening 151 opposite the pocket base, through which shipping items 21 can be inserted into the receiving space. By means of the conveying device 170, the material web, which is V-shaped or U-shaped in cross-section and is loaded with at least one shipping item 21, is pulled further out of the loading device 150 in the conveying direction. A pressing and separating device 180 serves to seal the packaging pockets and essentially simultaneously separate the sealed packaging pockets loaded with a shipping item 21 from the material web.

[0057] The feed device 110 is arranged in the vertical direction V above the material web supply 2. Downstream of the feed device 110, the web-shaped starting material 1, which may have been formed into a grooved material web in the feed device 110 by means of a grooving element 105, is guided along a support roller. The support roller can be referred to as an idler roller or dancer roller and can be capable of forming a web storage device. The support roller is mounted on the system 100, in the embodiment according to Figure 1 on the feed device 110, so that it can move transversely to the conveying direction. The support roller is held movable relative to the feed device 110 and / or a deflection device 120 to perform an evasive movement. As shown in Figure 1, the evasive movement can be oriented in the vertical direction V.The feed device no comprises pairs of conveyor rollers m and 112, between which the web-shaped starting material web can be conveyed, wherein at least one pair of conveyor rollers is driven.

[0058] In the feed section of the forming device 130, a deflection device is arranged, which in the exemplary embodiment shown here is implemented as a deflection roller 120. The web-shaped starting material 1 is supported along the deflection axis U on the deflection roller 120 before being conveyed through the forming device 130. The deflection roller 120 or deflection roller extends in the direction of the deflection axis U over more than the initial width b of the starting material web 1.

[0059] The deflection, implemented here as a deflection roller 120, is arranged vertically above the forming device 130 in the vertical direction V. The deflection roller 120 is also arranged above the feed device 110, which is located above the material web supply 2. In the embodiment according to Figure 1 or Figure 2, the deflection forms the uppermost component of the system 100. The arrangement of the deflection between the feed device 110 and the forming device 130 allows for a compact design in the horizontal direction, so that the system 100 can be installed with a particularly narrow footprint in a logistics hall.

[0060] An exemplary embodiment of a forming device 130 is described below. Starting from the deflection, the starting material web 1 is conveyed downwards in the conveying direction corresponding to the vertical direction V into and through the forming device 130. The longitudinal edges 6 of the material web can essentially remain in the plane determined by the deflection, which extends from the deflection roller 120 to the conveyor 170. The central region of the material web in the web width direction B is formed in the forming device 130 by folding means, which here are implemented by folding rollers 131, 132, into a pocket base 7 of a material web with a V- or U-shaped cross-section, which is framed on both sides by wings that extend up to the longitudinal edges 6.

[0061] The forming device 130 comprises a first folding roller 131, the roller axis W of which is aligned spatially parallel to the deflection axis U and offset from the deflection axis U. In the conveying direction, an axial distance is provided between the roller axis W of the first folding roller 131 and the deflection axis U. Transversely to the conveying direction, a turnover distance extends between the deflection axis U and the roller axis W of the first folding roller 131. A second folding roller 132 and optionally a third folding roller arranged between the first folding roller 131 and the second folding roller 132 define the path of the pocket base 7 through the forming device 130. The folding rollers 131, 132 are formed by a pair of roller disks 135, between which a spacer is arranged.The distance between the rolling disks 135 relative to each other in the direction of the roll axis W, defined by the spacer, can correspond to the distance between the creasing disks 107 of the creasing element 105 upstream of the forming device 130.

[0062] The forming device 130 has a guide surface 140, which is partially realized by counter-bearing rollers 141, 142, 143 assigned to the conveyor rollers 131, 132. The V- or U-shaped material web, in particular the pocket base 7, can be guided along the guide surface 140. Preferably, the guide surface 140 extends parallel to the plane spanned by the deflection 120 and the conveyor device 170. In the embodiment of the system 100 according to Figures 1 or 2, the guide surface 140 extends in a substantially vertical plane. The guide surface 140 extends through both the forming device 130 and the feeding device 150. Several sections of the guide surface 140 and counter-bearing rollers 141, 142, 143 and 145 arranged therein form a section surface for the outer side of the material web in the region of the pocket base 7.

[0063] The counter-bearing rollers 141, 142, 143, and 145 are arranged in the area of ​​the loading device 150 in the loading direction E opposite the loading opening 151. The counter-bearing rollers 141, 142, 143, and 145 limit the depth in the loading direction E to which a (not shown in detail) shipping article 21 can be inserted and brought into contact with the pocket base 7. The loading direction E is oriented horizontally. In the conveying direction, the loading opening 151 has a clear length f. Transverse to the conveying direction, the loading opening 151 has a clear width q. The clear length f and the clear width q of the loading opening 151 are defined by a frame 155 that completely surrounds the loading opening 151.

[0064] Downstream of the feeding device 150, a conveyor device 170 is arranged, which can grip the longitudinal edges 6 of the material web and convey them in the conveying direction. Following the conveyor 170, a pressing and separating device 180 is provided for forming and separating packaging pockets 11 from the web-shaped starting material 1.

[0065] With reference to Figures 3-7, exemplary embodiments of a pressing and separating device 180 according to the invention of a system for converting the web-shaped starting material 1 into packaging pockets 11, as shown, for example, in Figures 8-10, are explained.

[0066] The pressing and separating device 180 according to the invention comprises, according to the exemplary embodiments illustrated, as its main components a pair of pressing jaws 181 consisting of two mutually associated pressing jaws 183, 185, which, as shown in Figures 6 and 7, each comprise two mutually parallel pressing jaw segments 187, 189 and 191, 193, respectively. The pressing jaws 183, 185, in particular their pressing jaw segments 187-193, extend transversely to the web longitudinal direction L and transversely to the vertical direction V, essentially in the width direction B of the preformed packaging pocket 11 already filled with a shipping article 21.If the pressing and separating device 180 according to the invention is integrated into a system 100 according to the invention, for example, the pressing and separating device 180 serves to press and sever a trailing end, in particular transverse edge sections, of the packaging pocket 11 to be separated and sealed, and to press or seal a leading end, in particular transverse edge sections, of the pre-formed material web to be fed to the pressing and separating device 180.

[0067] As can be seen in Figures 3-7, the two pressing jaws 183, 185 are spring-loaded, in particular each mounted via a spring arrangement 195, 197, on a respective support 199, 201. Figures 3-5 show a pressing and separating process in three different operating positions, wherein Figure 3 represents the fully open position, Figure 4 represents an intermediate position in which the at least one movable pressing jaw 185 is displaced, and Figure 5 represents the fully closed position in which the separating and sealing process essentially takes place.

[0068] In the exemplary embodiment according to Figures 3-7, a cutting device 203, which is designed as a knife or cutting bar extending essentially over the entire width of the pressing jaws 183, 185, is assigned to the movably mounted pressing jaw 185. Referring to Figures 6 and 7, it can be seen that the cutting device 203 is arranged at a vertical distance a between the associated pressing jaw segments 193, 191. Furthermore, the cutting device is mounted in a fixed position. The two pressing jaws 183, 185 are essentially identical in construction, with mutually associated and facing pressing jaw segments 187, 191 and 189, 193 coming into press contact during a pressing process (see Figure 7).During the pressing process, the cutting device 203 engages in the gap a* existing between the pressing jaw segments 187, 189 of the opposite pressing jaw 183 and cuts the material web to separate a packaging pocket 11. Through the selected arrangement of pressing jaws 183, 185 and cutting device 203, as well as the interaction with the spring assemblies 195, 197 and, if appropriate, the particularly elastically flexible material, the present invention achieves a compact, easily implemented functional combination of sealing and separation. When the pressing jaw segments 187-193 are pressed against one another, the pressing jaw 185 associated with the cutting device 203 is displaced by the opposite pressing jaw 183, so that the cutting device 203 is released and the material web can be cut (Figure 7). After a separation and sealing process as shown in Figure 5 orAs indicated in Figure 7, the pressing jaws 183, 185 move back to their starting position shown in Figures 3 and 6, respectively. A further advantageous aspect comes to the fore in that when the spring force of the spring assemblies 195, 197 is released, the cutting device 203 springs back again with respect to the pressing jaws 183, 185 and any web material caught on the cutting device 203 is stripped off and removed, thus reducing the risk of a paper jam and damage to a packaging pocket 11.

[0069] Referring again to Figures 3-5, the activation of the pressing and separating device 180 and the displacement of the movable pressing jaw 185 are explained in more detail. A gear mechanism 205 is provided for applying the drive force provided by a motor, in particular a rotary motor, to the pressing jaw 185. According to the exemplary embodiments, the gear mechanism 205 is capable of converting the rotary drive force applied by the motor into a translational, linear movement, in particular an opening and closing movement, of the pressing jaw 185. A gear mechanism 205 is, for example, a coupling mechanism with a double, centrally acting slider crank 207.The gear 205 makes it possible, as can be seen from the sequence of Figures 3 - 5, to transfer a rotational movement initiated in the motor into a shaft 209 about a rotational axis R into a translational movement T, which corresponds to a linear pressing and release movement direction for pressing and re-releasing the two pressing jaws 183, 185.

[0070] Figure 8 shows a side view of a shipping bag or packaging bag 11. The packaging bag 11 is sealed by transverse strips 15 and, opposite the bag base 7, by a longitudinal strip 16. Inside the packaging bag 11 is a shipping item 21, shown in dashed lines. The shipping item 21 has a piece length SL and a piece height SH. The total length g of the packaging bag 11 corresponds to the sum of the piece length SL, the predetermined distance c, and the second distance d. Figures 9 and 10 show other views of the packaging bag 11 shown in Figure 8.

[0071] The features disclosed in the above description, the figures, and the claims may be important both individually and in any combination for the realization of the invention in its various embodiments. LIST OF REFERENCE SYMBOLS

[0072] 1 web-shaped starting material

[0073] 2 Material web supply

[0074] 6 Longitudinal edge

[0075] 7 Bag base ii Packaging bag

[0076] 15 horizontal stripes

[0077] 16 longitudinal stripes

[0078] 20 mobile support frame

[0079] 21 shipping items

[0080] 100 systems

[0081] 105 Creasing element

[0082] 107 Grooving disc

[0083] 110 Feeding device

[0084] 111, 112 conveyor roller

[0085] 120 pulley

[0086] 130 forming device

[0087] 131, 132 folding roller

[0088] 135 rolling disc

[0089] 140 guide surface

[0090] 141, 142, 143, 145 Counter bearing roller

[0091] 150 feeding device

[0092] 151 Loading opening

[0093] 155 frames

[0094] 170 Conveyor device

[0095] 180 pressing and separating device

[0096] 181 pair of pressing jaws

[0097] 183, 185 pressing jaw

[0098] 187,189,191,193 Press jaw segment

[0099] 195, 197 Spring arrangement

[0100] 199, 201 carriers

[0101] 203 Cutting device

[0102] 205 gearbox

[0103] 207 Slider crank

[0104] 209 Wave

[0105] R Rotation axis T Translation movement a Distance or gap a* Distance or gap b Initial width c Predetermined distance d Second distance f Clear length g Total length q Clear width SL Piece length

[0106] SH piece height

[0107] L web longitudinal direction

[0108] B Track width direction

[0109] E Feeding direction and deflection axis

[0110] V Vertical direction w Roller axis

Claims

REQUIREMENTS 1. Pressing and cutting device (180) for a system (100) for converting a web-shaped input material (i) defining a web longitudinal direction (L) and extending between two longitudinal edges (6) opposite each other in the web width direction (B), in particular made of paper, cardboard or paperboard, into packaging bags (n) with a forming device (130) for continuously forming the web-shaped input material (1) into a material web with a V- or U-shaped cross-section and a receiving space extending in the web longitudinal direction (L) and bounded by opposing V- or U-legs of the material web, comprising a pair of press jaws (181) of two mutually associated press jaws (183, 185), at least one of which is movable relative to the other press jaw for pressing forward transverse edge sections of the V- or U-legs against each other and cutting off a packaging bag (11) from the material web in the area of ​​the pressed transverse edge sections,characterized in that at least one of the press jaws (183, 185) is spring-loaded in the direction of movement of the at least one movable press jaw.

2. Pressing and separating device (180) according to claim 1, characterized in that the at least one spring-loaded press jaw is supported on a spring arrangement, in particular an elastic spring arrangement, wherein the spring arrangement is supported on an unsprung support.

3. Pressing and separating device (180) according to one of the preceding claims, characterized in that the spring action of the at least one press jaw is realized by the press jaw being made of a particularly elastically compliant material.

4. Pressing and cutting device (180), in particular according to one of the preceding claims, for a system (100) for converting a web-shaped input material which defines a web longitudinal direction (L) and extends between two longitudinal edges (6) opposite each other in the web width direction (B), in particular made of paper, cardboard or corrugated board, in packaging bags (n) with a forming device (130) for continuously forming the web-shaped starting material into a material web with a V- or U-shaped cross-section and a receiving space extending in the longitudinal direction (L) of the web and bounded by opposing V- or U-legs of the material web, comprising a pair of press jaws (181) consisting of two mutually associated press jaws (183, 185), at least one of which is movable relative to the other press jaw for pressing forward transverse edge sections of the V- or U-legs against each other, characterized in that a cutting device is arranged on at least one press jaw and / or at least one press jaw is designed such that the cutting device is pressed against each other when the press jaws (183,185) for separating a packaging bag (11) from the material web, in particular continuously, and is moved back, in particular continuously, when the press jaws (183, 185) are moved apart from each other with respect to the associated press jaw. Pressing and cutting device (180) according to claim 4, characterized in that the at least one press jaw comprises two parallel press jaw segments which are arranged at a distance from each other, forming a gap in which the cutting device is arranged. Pressing and cutting device (180) according to claim 5, characterized in that the further press jaw comprises two press jaw segments which are in particular identical to the at least one press jaw and which are arranged at a distance from each other, forming a gap in which the cutting device is arranged when the press jaws (183, 185) are pressed against each other.185) can intervene. Pressing and cutting device (180) according to one of claims 4 to 6, characterized by a passive state in which the press jaws (183, 185) release the material web and the cutting device projects by at most 5%, in particular by at most 4%, at most 3% or at most 2% of its longitudinal extension in the direction of movement of the movable press jaw beyond a pressing surface of the associated press jaw facing the further press jaw, and / or a press end state in which the cutting device projects by at least, 10%, in particular by at least 12.5%, at least 15%, or at least 17.5% of their longitudinal extent in the direction of movement of the movable press jaw, projecting beyond the pressing surface. Pressing and cutting device (180) according to one of claims 4 to 7, characterized in that the cutting device is released by the fact that, when the press jaws (183, 185) are pressed against each other, the press jaw associated with the cutting device is displaced by the opposing press jaw. Pressing and cutting device (180), in particular according to one of the preceding claims, for a system (100) for converting a web-shaped input material that defines a web longitudinal direction (L) and extends between two longitudinal edges (6) opposite each other in the web width direction (B), in particular made of paper, cardboard, or corrugated board.in packaging pockets (11) with a forming device (130) for continuously forming the web-shaped starting material into a material web with a V- or U-shaped cross-section and a receiving space extending in the longitudinal direction (L) of the web and bounded by opposing V- or U-legs of the material web, comprising a pair of press jaws (181) consisting of two mutually associated press jaws (183, 185), at least one of which is movable relative to the other press jaw for pressing forward transverse edge sections of the V- or U-legs against each other, and for separating a packaging pocket (11) from the material web in the area of ​​the pressed transverse edge sections, characterized by a gear unit assigned to at least one of the press jaws (183, 185) for providing a pressing force to the pair of press jaws (181). Pressing and separating device (180) according to one of the preceding claims, characterized in thatthat the at least one movable press jaw is movable along a linear pressing and release movement direction. Pressing and separating device (180) according to claim 9 or 10, characterized in that the transmission is configured to transmit the force performed by a power source, such as a motor, in particular a rotary motor, to convert mechanical work into a particularly linear pressing and releasing movement direction of at least one movable pressing jaw.

12. Pressing and separating device (180) according to one of claims 9 to 11, characterized in that the transmission has a non-linear power transmission function, wherein in particular the transmission is configured to adjust the pressing force transmitted to the press jaw pair (181) depending on the operating state of the pressing and separating device (180).

13. Pressing and separating device (180) according to one of claims 9 to 12, characterized in that the transmission comprises a linkage transmission, in particular with a double centrally acting push crank, a toggle joint, a cam disc, several cams and / or a cam disc.

14. Pressing and separating device (180) according to one of claims 9 to 13, characterized in that the transmission is coupled via an intermediate transmission, such as a worm, spur, planetary or bevel gear transmission, for the particularly linear adjustment of the speed-torque ratio to a power source, such as a motor, in particular a rotary motor.

15. System (100) for converting a web-shaped starting material, which defines a web longitudinal direction (L) and extends between two longitudinal edges (6) opposite each other in the web width direction (B), in particular made of paper, cardboard or corrugated board, into packaging bags (11), comprising a forming device (130) for continuously forming the web-shaped starting material into a material web with a V- or U-shaped cross-section and a receiving space extending in the web longitudinal direction (L) and bounded by opposing V- or U-legs of the material web, and a pressing and separating device (180) downstream of the forming device (130), designed according to one of the preceding claims, for simultaneously pressing leading transverse edge sections of the V- or U-legs against each other and separating a packaging bag (11) from the material web in the area of ​​the pressed transverse edge sections.

16. Packaging bag manufacturing station comprising a system (100) according to claim 15 and a supply of web-shaped starting material. (1) defining a web longitudinal direction (L) and extending between two longitudinal edges (6) opposite each other in the web width direction (B), in particular made of paper, cardboard or corrugated board, from which the system (too) can pull the starting material (i).

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