DE102018009679A1 - Multi-drive device for manufacturing a packaging material product from a fiber raw material, method for manufacturing a packaging material product and method for removing packaging material blockages - Google Patents

Abstract

Device for providing packaging material, such as a corrugated cardboard web section or a strand of paper cushioning material, by manipulation, in particular shaping, conveying and / or severing, of a fiber starting material, such as a single or multi-layer paper web or a corrugated cardboard web, comprising at least one mechanically driven working device, such as a deformation device, in particular a pair of deformation wheels, a conveyor device, in particular a pair of conveyor wheels, or a cutting device, in particular a rotary cutter or a translation cutter; at least one electric motor driving the working device with a stationary stator, a rotor movably mounted therefor and a coil arrangement of the rotor or the stator which is supplied with an excitation current, the electric motor being free of an electrical contact coupling for transmitting the excitation current between the stator and the rotor and a device for detecting the position of the rotor.

Description

The invention relates to a device for producing a packaging material product from a fiber starting material, such as a single or multi-layer paper web or a corrugated cardboard web, in particular from recycled paper. The invention also relates to a method for manufacturing a packaging material product and a method for removing packaging material blockages in an apparatus for manufacturing a packaging material product. Generic devices are set up, for example, in logistics centers as a portable, mobile unit in order to provide length-made packaging material products when packaging an object. A packaging material strand can in particular mean a paper cushion strand which is obtained from a space-saving single or multi-layer paper web compared to the paper cushion strand, in particular from recycled paper, in the form of a roll of material web or a zigzag-folded stack of packaging material, which is also referred to as a fanfold stack becomes. To manufacture the paper cushion strand, the paper web is pulled off a roll or a stack of leporello and shaped in such a way that air pockets form, which cause damping between the object to be packaged and the outer packaging. A packaging material product can in particular be understood to mean a paper cushion product, in particular of a certain length, that has been separated from a paper cushion strand. A packaging material strand can also be understood to mean, in particular, a corrugated cardboard web. In the case of the corrugated cardboard web, the packaging material product can be a corrugated cardboard web section that has been separated from the corrugated cardboard web. Corrugated cardboard web sections are also preferably made from recycled paper for sustainability reasons.

A device for manufacturing a packaging material product is, for example, from DE 697 35 564 T2 known. In it, a paper web is formed into a three-dimensional packaging material strand via a forming station, and the packaging material strand is given a certain dimensional stability via a pair of deformation wheels. Then, with a scissor-cut arrangement, packaging material products are separated from the pair of deformation wheels, which are then removed from the device via a safety delivery chute. Conveyor wheels can be provided in the safety slide for the removal of the packaging material products.

A disadvantage of such devices is that the scissor-cut arrangement is, on the one hand, susceptible to wear and, on the other hand, causes the formation of cutting chips. Furthermore, it has been shown that the packaging material strand and the packaging material product can be clamped between the cooperating cutting edges of the scissor cutting arrangement and can thereby cause the device to become blocked. Another disadvantage is that the wear of the scissor-cut arrangement requires high exchange rates of the cutting edges in order to ensure a reliable separation of the packaging material.

To counter these problems, strikes DE 10 2014 016 874 A1 a generic device for manufacturing a packaging material product. This comprises a rotary cutter and in each case a pair of feed wheel upstream and downstream of the rotary cutter. To increase the precision when cutting off the upholstery material and to reduce wear on the rotary cutter, it is proposed to match the two pairs of feed wheels in such a way that the upholstery material is under tension before the cut. This is achieved in particular by different conveying speeds of the two pairs of conveying wheels or by temporarily increasing the distance between the two pairs of conveying wheels. Furthermore, the risk of blockages occurring in the device could be reduced, in particular by a higher conveying speed of the pair of feed wheels downstream of the rotary cutter in the conveying direction and by a rotary cutter with a stripping device.

The complexity of the generic device is disadvantageous. On the one hand, the use of a rotary cutter with a stripping device entails great manufacturing and maintenance costs. On the other hand, the known concept involves an increased development effort in the development of new devices for certain paper materials and certain forms of a packaging material product. For example, the forces required to drive the rotary cutter and the conveyor must be taken into account when designing the device. Furthermore, the rotating parts of the scraper and rotary cutter offer dust-collecting surfaces on the one hand and are susceptible to blockages due to dust deposits on the other. The elastic scraper also threatens to become porous or lose elasticity if there is too much dust, which can have a negative impact on the risk of dust formation. A further disadvantage is that if paper jam occurs despite the proposed measures, this can only be removed by manual intervention by an operator, which on the one hand can increase the time required for removing jams and on the other hand increases the requirements for safety regulations for the device brings itself.

It is an object of the invention to overcome the disadvantages of the prior art, in particular to provide an apparatus for producing a packaging material product from a fiber starting material and a method for producing a packaging material product as well as a method for eliminating packaging material blockages in a device, the development, production - And / or maintenance work for the device should be reduced and the risk of dust formation and / or dust deposition in the device should not be increased, in particular reduced, and / or the removal of jams should be made easier, in particular made safer.

This object is achieved by the subject matter of the independent claims.

According to a first aspect of the present invention, the device for producing a packaging material product from a fiber starting material, such as a single or multi-ply paper web or a corrugated cardboard web, in particular from recycled paper, comprises a cutting device for separating the packaging material product from a packaging material line, such as a corrugated cardboard web or in the Device made of three-dimensional paper cushion strand formed from the fiber starting material. Furthermore, the device according to the invention comprises a feed wheel pair assigned upstream of the cutting device in the conveying direction F for conveying the strand of packaging material and a pair of discharge wheels arranged downstream in the conveying direction for conveying the strand of packaging material. According to the first aspect of the present invention, the feed wheel pair and the discharge wheel pair are each assigned a separate drive for independently driving and / or braking at least one wheel of the respective wheel pair.

The packaging material product is made in particular from recycled paper. Recycled paper is, in particular, paper materials with a low proportion (less than 50%) of fresh fiber paper material. In particular, paper materials containing 70% to 100% waste paper are preferred. The recycled paper in the sense of this invention should be paper material which 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 can have, preferably a tensile strength of 5 Nm / g to 40 Nm / g. A can be used to determine the tensile strength or the tensile strength index Standard DIN EN ISO 1924-2 or DIN EN ISO 1924-3 be used. Additionally or alternatively, a recycled paper property or waste paper property can be characterized by the so-called burst 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. To determine the burst index, the Standard DIN EN ISO 2758 used. Furthermore, the packaging material has a mass per unit area of in particular 40 g / m 2 to max. 140 g / m ^ 2. The fiber starting material can in particular be a single or multi-layer paper web or a corrugated cardboard web. Furthermore, the fiber starting material can be present as a roll of material web or as a zigzag-folded stack of packaging material, which is also referred to as a fanfold stack.

Assigning a separate drive means in particular that at least two drives, in particular in the form of electric motors, are provided, one of which drives the feed wheel pair and the other drives the discharge wheel pair. The presence of one drive each for the feed wheel pair and the discharge wheel pair enables one wheel of a feed wheel pair to be driven while the other wheel is braked, in particular stopped. In addition, the conveyor wheel pairs can thereby preferably be driven at different speeds, torques and / or directions of rotation. It is particularly sufficient that one wheel of a pair of wheels is driven and the other pair of wheels is driven indirectly via the driven pair of wheels.

The device is preferably a device for producing a packaging material product in the form of a three-dimensional paper cushion product. A single or multi-layer paper web is preferably formed into a paper cushion strand and the paper cushion product is then separated from the paper cushion strand via the cutting device. A forming device is preferably provided for the forming into the paper cushion strand, which is preferably arranged upstream of the pair of feed wheels in the conveying direction. The shaping device can, for example, be a funnel-shaped wall section of the device, which tapers in the conveying direction towards the pair of feed wheels. Alternatively or additionally, a separate shaping device, such as a shaping hopper in the conveying direction upstream of the feed wheel pair, can be attached to the device and / or to the funnel-shaped wall section of the device. Alternatively or additionally, a shaping device can be provided downstream of the cutting device in the conveying direction. Such a shaping device arranged downstream of the cutting device can, for example, by a funnel-shaped wall section of the device, which tapers in the conveying direction. A shaping device arranged downstream of the cutting device is preferably arranged between the cutting device and the discharge wheel pair, in particular adjoins the discharge wheel pair in the conveying direction.

In an advantageous embodiment of the present invention, the pair of feed wheels and / or the pair of discharge wheels detects the strand of packaging material between two conveyor wheels and conveys the strand of packaging material along or against the conveying direction. As an alternative or in addition, the pair of feed wheels and / or the pair of discharge wheels conveys the strand of packaging material along or counter to a passage direction defined by a common tangent to a respective outer circumference of the conveyor wheels.

In a further advantageous embodiment of the present invention, the feed wheels of the feed wheel pair and / or the discharge wheel pair are braced against one another. The feed wheels of the feed wheel pair and / or the feed wheel pair are preferably opposed to one another with a force of at least 1 Newton, 50 Newton, 100 Newton or 150 Newton, of at least 250 Newton, 350 Newton or 450 Newton or of at least 550 Newton, 700 Newton or 900 Newton tense. As an alternative or in addition, the distance between the wheel axles of the feed wheels of one pair of wheels is undersized such that the wheels are elastically preloaded against one another.

In a preferred embodiment, the wheel axes of at least one, preferably both pairs of feed wheels each run parallel to one another. Alternatively or additionally, the wheel axles run at least one, preferably both pairs of conveyor wheels, each transversely, preferably orthogonally, to the direction of conveyance or a direction of passage defined by a common tangent to a respective outer circumference of the conveyor wheels and / or along a plane which is transversely, preferably orthogonally, to Direction of conveyance or a through direction defined by a common tangent in a respective outer circumference of the conveying wheels.

In a preferred embodiment, the feed wheel pairs are in particular aligned with one another along a plane which has a wheel axis of a feed wheel pair, preferably both wheel axes of both feed wheel pairs, as a normal vector.

In a particularly preferred embodiment of the present invention, at least one wheel of at least one pair of front wheels comprises an elastically deformable pick-up area, the wheel preferably being formed by an elastomer body, such as a PU foam body, or having a corresponding outer coating

In a preferred embodiment, at least one feed wheel of the feed wheel pair and / or of the discharge wheel pair is coupled via a gear, preferably via a worm gear, to the drive assigned to the at least one feed wheel. The transmission preferably reduces a movement amplitude of the drive to a movement amplitude of the at least one feed wheel, in particular with a reduction ratio of 3 to 1 to 25 to 1, preferably of approximately 5 to 1.

In a preferred embodiment of the present invention, the drives are driven and / or braked independently of one another, in particular via a higher-level control unit, in such a way that the pair of feed wheels and the pair of discharge wheels tension the packaging material strand before the packaging material product is separated. In a particularly advantageous embodiment, the device has a control unit which drives the two drives, in particular in the form of electric motors, independently of one another. It is particularly preferred to remove the packaging material certificate before
the tensioning can be realized, for example, in that the pair of discharge wheels drives the packaging material strand more strongly than the pair of feed wheels prior to separation. For example, the greater drive can be due to a higher conveying speed, which the conveying wheel pair communicates to the strand of packaging material. As an alternative or in addition, the stronger drive can be due to a greater conveying force which is communicated to the packaging material strand and / or a greater rotational movement of at least one driven feed wheel of the feed wheel pair compared to the rotational movement of at least one driven feed wheel of the feed wheel pair. The pairs of conveyor wheels are particularly preferably braked, in particular stopped, before the packaging material strand is tensioned. In particular, excessive slippage and the associated dust formation can thereby be avoided.

The use of conveyor wheel pairs is particularly advantageous for the present invention because it can reduce the friction between the packaging material strand and the conveyor, in particular slippage, and in particular can reduce the dust formation when manufacturing packaging material products. Another advantage when using conveyor wheel pairs is that the tensioning of the packaging material strand is less via the conveyor wheel pairs Dust formation can occur because the conveyor wheels that hold the packaging material strand can move with the packaging material strand so that abrasion can be reduced.

Alternatively or additionally, in a preferred embodiment of the present invention, the drives are driven and / or braked independently of one another, in particular via a higher-level control unit, in such a way that the pair of discharge wheels is driven in the opposite direction to the conveying direction when packaging material becomes blocked.

In a preferred embodiment of the present invention, a cutting edge of the cutting device is guided such that it cuts through the packaging material strand translationally in the cutting engagement transversely to the conveying direction.

Furthermore, the cutting device preferably comprises a guide which guides the cutting edge in such a way that it translationally cuts through the material cushion strand in the cutting engagement. The cutting intervention is to be understood in particular as the point in time at which the cutting edge dips into the strand of material. The cutting edge particularly preferably plunges into the material strand over its entire depth. This is to be understood in particular to mean that the cutting edge runs straight in depth, in particular the tip of the cutting edge extends in depth at a cutting direction height. By immersing the cutting edge over its entire depth in the cutting engagement, it can in particular be ensured that the packaging material strand is cut as evenly as possible, in particular at the same time, over the entire extent of the packaging material strand in the depth direction. As a result, in particular the tearing of the paper cushion strand when being cut is reduced, preferably avoided.

The depth direction is to be understood in particular as the direction which runs transversely, in particular orthogonally, to the cutting direction and to the conveying direction.

Tearing occurs in particular when a tension is applied to the strand of material before it is cut. For example, the separation can be achieved simply by applying a high voltage, due to which the strand of material is severed. However, compared to cutting with one cutting edge, there is an increased amount of dust when tearing, which should be avoided in particular for reasons of safety and maintenance. But even when cutting with one cutting edge, the packaging material strand can tear to a certain extent. For example, tearing occurs if the strand of packaging material is put under tension before being cut off and the cutting edge, such as in the case of scissors cutting, plunges into the strand of material from one side and cuts the material in the depth direction via the cutting process. From a certain progress in the severing, in particular in the depth direction, the tension in the strand of packaging material can lead to tearing of the section that has not yet been cut. Because the cutting edge plunges into the depth direction of the material strand in the depth direction of the material strand as far as possible, the formation of dust in particular can be reduced.

Due to the translational severing of the packaging material strand in a cutting engagement transverse to the conveying direction, the material strand is subjected in particular to a cutting force transversely to the conveying direction. This cutting force can preferably, particularly before the actual severing, cause the strand of packaging material to be stretched between the pairs of conveyor wheels. In an embodiment in which the cutting edge is designed and / or guided in such a way that it penetrates uniformly, in particular at the same time, over the entire depth of the paper cushioning strand, the cutting force applied to the paper cushioning strand before actually severing it, and thus in particular the tension of the Packaging material strand can be increased. Compared to rotary cutters or scissor-like cooperating cutters, a translationally guided cutting edge transversely to the conveying direction has the advantage that the force applied acts transversely to the conveying direction, preferably orthogonally to the conveying direction, on the packaging material strand and clamps it between the pairs of conveying wheels.

In a further preferred embodiment of the present invention, the device comprises a conveying channel which extends at least at the conveying direction height of the cutting device in the conveying direction and is delimited by a boundary wall. Furthermore, the device comprises a gap formed in the boundary wall, which is designed such that a cutting edge of the cutting device can move into and out of the gap without contact.

The gap is preferably formed at the conveying direction level of the cutting device. The gap is particularly preferably designed such that the cutting edge can translationally cut the packaging material strand in the cutting engagement, in particular purely translationally from a cutting start position into a cutting end position method, and can move into and out of the gap contactlessly, in particular the cutting tip of the cutting edge can leave the conveying channel without contact can.

The conveying direction height of the cutting device means in particular the height in the conveying direction at which the cutting edge, in particular the cutting tip, of the cutting device is in cutting engagement with the strand of packaging material. The cutting edge preferably moves purely translationally in the cutting direction at the conveying direction height of the cutting device, the cutting direction preferably running transversely, in particular orthogonally, to the conveying direction. The conveying channel at the conveying direction level of the cutting device extends in the conveying direction, in particular downstream and upstream of the cutting edge, particularly preferably at least up to the pairs of conveying wheels. The feed channel is delimited in particular by the boundary wall. The boundary wall preferably surrounds the conveying channel upstream and / or downstream of the cutting device. This means in particular that the conveying channel is open in the conveying direction and delimited, in particular enclosed, by the boundary wall in the cutting direction and in the depth of the device. For example, the boundary wall can have opposite wall sections in the cutting direction and / or in the depth direction, which delimit the conveying channel. However, the delivery channel does not necessarily have to be enclosed by the boundary wall. It can, for example, also be formed by two mutually opposite, in particular parallel, changes in the cutting direction or in the depth direction, while the conveying channel is open in the other direction. The conveying duct is particularly preferably delimited by opposing, preferably parallel, upper and lower wall sections which delimit the conveying duct in the depth direction. Particularly preferably, the upper and lower wall sections extend in the conveying direction between the pairs of feed wheels, in particular at least from the pair of feed wheels to the pair of discharge wheels. The cutting edge 605 is preferably guided in the conveying direction over the upper and lower wall sections, in particular at the height of the cutting device, in particular when moving from a cutting start position to a cutting end position.

According to an advantageous embodiment, the conveying channel in the conveying direction upstream of the gap is delimited by an upstream wall section which has an upstream counter edge delimiting the gap in the conveying direction upstream.

The upstream counter edge has a minimum distance of at least 0.1 mm, 0.3 mm, 0.5 mm, 0.7 mm, 1.0 mm, 2 mm, 3 mm or 5 when the cutting edge is extended and retracted mm on. Depending on the tension under which the packaging material strand stands during cutting and / or the sharpness of the cutting edge and / or the configuration of the conveying channel, the packaging material strand remains contact-free with respect to the upstream counter edge when the packaging material product is separated. In the case of blunt cutting edges in particular, however, the upstream counter edge can preferably also form an abutting edge which supports the severing.

The cutting edge can preferably be spaced apart from the upstream counter edge in the conveying direction when entering and exiting the gap. The distance is preferably 0.1 mm to 50 mm, 0.5 mm to 30 mm or 1.0 mm to 15 mm. The distance between the cutting edge and the upstream counter edge in the conveying direction when entering and exiting the gap is particularly preferably constant, in particular over the entire travel path from a cutting start position to a cutting end position.

It is further preferred that the cutting edge extends beyond the upstream counter edge when entering and leaving the gap, in particular in the cutting direction. The cutting edge preferably extends 0.1 to 200 mm, 0.5 to 100 mm or 5.0 to 50 mm beyond the upstream counter edge.

Furthermore, the conveying channel is preferably delimited in the conveying direction downstream of the gap by a downstream wall section. The downstream wall section preferably has a downstream counter edge delimiting the gap downstream in the conveying direction.

It is also advantageous that the cutting edge is spaced apart from the downstream counter edge in the conveying direction when entering and leaving the gap. The distance is particularly preferably 0.1 mm to 200 mm, 0.5 mm to 100 mm or 5.0 mm to 50 mm. The distance between the cutting edge and the upstream counter edge in the conveying direction when entering and exiting the gap is particularly preferably constant, in particular over the entire travel path from a cutting start position to a cutting end position.

In an advantageous embodiment, the cutting edge travels in the cutting direction beyond the downstream counter edge when entering and exiting the gap. The cutting edge preferably extends 0.1 to 150 mm, 0.5 to 70 mm or 5.0 to 30 mm beyond the downstream counter edge.

It has proven to be advantageous that the downstream counter edge is offset in the cutting direction with respect to the upstream counter edge. The offset is preferably 0.1 mm to 200 mm, 0.1 mm to 100 mm, 0.1 mm to 50 mm, 0.5 mm to 30 mm or 5 mm to 10 mm. Alternatively or additionally, the downstream counter edge and the upstream counter edge are offset from one another in such a way that the packaging material strand and / or the packaging material product remain contact-free with respect to the downstream wall section, in particular the downstream counter edge, when the packaging material product is separated.

It has turned out to be particularly preferred if the cutting edge moves out of the conveying channel when entering and exiting the gap. In this case, the cutting edge preferably moves out of the conveying channel in such a way that dust and / or snippets which arise when being cut off are thrown out of the conveying channel. Alternatively or additionally, the cutting edge can protrude from the conveying channel into a cutting end position by 0.1 to 150 mm, 0.5 to 70 mm or 5.0 to 30 mm.

With the design of the gap described above, it can in particular be brought about that dust and snippets which arise during separation are largely conveyed out of the conveying channel and, at the same time, cutting residues and snippets adhering to the cutting edge when retracting into the gap, in particular into the conveying channel, on the boundary wall, in particular on at least one counter edge.

In a preferred embodiment, at least one, preferably two, particularly preferably three, of the drives is controlled by a higher-level control unit, the higher-level control unit preferably exchanging data with drive-specific control subunits. The data exchange between the drive-specific control subunits and the higher-level control unit preferably takes place via a communication link, in particular by means of bus technology, such as CAN bus technology.

In one embodiment of the present invention, the drives are electric motors, each with a stationary stator and a rotor movably mounted to it and a coil arrangement of the rotor or the stator which is supplied with an excitation current, the electric motor being free of an electrical contact coupling for transmitting the excitation current between the stator and the Is rotor and comprises a device for detecting the position of the rotor.

A second aspect of the present invention relates to a method for producing a packaging material product, in which a strand of packaging material, such as a corrugated cardboard web or a three-dimensional packaging material strand formed from a single or multi-layer paper web, in particular from recycled paper, is fed to a cutting device via a feed device. The packaging material product is separated from the packaging material strand with the cutting device and conveyed away via a removal device. According to the second aspect of the present invention, before the packaging material product is separated, the feed device and the removal device are driven and / or braked independently of one another in such a way that the packaging material strand is stretched between the conveyor devices. The conveyor wheel pairs described above are particularly preferably used as conveyor devices.

In a preferred embodiment of the present invention, before the packaging material product is cut off, the feed device is braked, in particular stopped, and the removal device is driven in the conveying direction via a predetermined path. As an alternative or in addition, preferably before the packaging material product is separated off, the feed device is driven in a direction opposite to the conveying direction and the feed device is braked, in particular stopped, before the removal of the packaging material product. Overall, the driving of the feed device and / or the removal device takes place before the separation of the packaging material product, preferably slower, in particular at least 50%, 60%, 70%, 80%, 90% or 95% slower than the conveying to and / or removing from the Cutting device.

In a preferred embodiment of the method according to the invention, the conveying device each has a driven conveying wheel, preferably a respective pair of conveying wheels, the driving over a predetermined path by rotating the conveying wheel over a predetermined angle, preferably between 1 ° and 720 °, particularly preferably between 10 ° and 60 °.

In a further preferred embodiment of the method according to the invention, the rotary movement of the conveying wheel takes place by driving the conveying wheel with a torque over a desired angle, preferably between 1 ° and 720 °, particularly preferably between 20 ° and 60 °, the desired angle being greater than the predetermined one Angle so that the feed wheel exerts a tensile force on the packaging material strand via the torque. The desired angle is preferably established as a result of the severing of the packaging material product, the packaging material product preferably being conveyed upstream of the cutting device in the conveying direction and / or the remaining strand of packaging material being conveyed upstream of the cutting device in the conveying direction.

Furthermore, it is preferred that the conveying devices each have a driven feed wheel, preferably a respective pair of feed wheels, braking being effected by reducing the speed of the feed wheel and / or stopping by stopping the feed wheel. As an alternative or in addition, the braked conveyor device is braked to such an extent that it pulls tensile forces of at least 10 Newton, 50 Newton or 150 Newton, preferably of at least 250 Newton, 350 Newton or 450 Newton, particularly preferably of at least 550 Newton, 700 Newton or 900 Newtons can be exposed without being moved over the entire, in particular without over 75%, 50% or 25% of the predetermined path of the driven device.

According to an advantageous embodiment of the method according to the invention, the packaging material strand is held so firmly by the conveying devices, in particular by two mutually braced conveyor wheels which clamp the packaging material strand, that the packaging material strand has tensile forces of at least 10 Newton, 50 Newton, 100 Newton or 150 Newton, preferably of at least 250 Newton, 350 Newton or 450 Newton, particularly preferably of at least 550 Newton, 700 Newton or 900 Newton, can be suspended without being pulled out of the conveying devices.

The tension acting on the packaging material strand is preferably adapted to the strength of the packaging material strand in such a way that the packaging material product is only separated as a result of a cutting intervention with a cutting edge of the cutting device of the packaging material strand. In particular, the tension is preferably matched to the cutting edge and the packaging material strand used in such a way that when cutting with a sharp cutting edge, the cutting is essentially carried out by cutting the packaging material strand, and / or when cutting with a blunt cutting edge, the cutting is carried out essentially by tearing . The strand of packaging material is preferably subjected to a tensile stress index of 0.04 to 35 Nm / g, particularly preferably 0.75 to 6 Nm / g. For the calculation of the tension index the Standards DIN EN ISO 1924-2 or the Standard DIN EN ISO 1924-3 are used, in particular based on the tensile strength index.

The preferred tension index can be achieved in particular when the packaging material strand is subjected to a preferred force between 1 Newton and 900 Newton, in particular between 20 Newton and 150 Newton. The preferred tensile stress index is achieved in particular under a force in this area, in particular with a width of the material of 36 cm and a mass per unit area of the paper cushion strand of 70 g / m ² . It is clear that depending on the area-related mass and width of the material, the force can be adjusted to achieve the preferred tension index. With the range specified for the tensile stress index, it was possible in particular to significantly reduce the risk of the packaging material becoming blocked, because, due to the tension applied, the packaging material strand and / or the packaging material product are pulled away from the cutting edge of the cutting device after being cut off, and thus in particular also from possible ones Crevices in which the material can get caught, which could cause clogging. Furthermore, the tension applied to the material is small enough with such a tensile stress index in order to keep the formation of dust as small as possible during separation. In particular, in combination with the advantageous embodiments of the feed wheel pairs and the cutting device described above, the risk of dust formation and dust generation can be reduced at the same time.

A third aspect of the present invention relates to a method for removing packaging material blockages which arise during the manufacture of a packaging material product, wherein a packaging material strand, such as a corrugated cardboard web or a three-dimensional packaging material strand formed from a single or multi-layer paper web, in particular from recycled paper, via a feed device is conveyed to a cutting device in the conveying direction. According to the invention, when a blockage of packaging material occurs, the feed device is driven in the opposite direction to the conveying direction.

In the method according to the invention, it is particularly preferably checked before driving the feed device in a direction opposite to the conveying direction whether a cutting edge of the cutting device is in a cutting start position or in a cutting end position, the cutting edge, if it is in the cutting end position, in the cutting start position is proceeded. Alternatively or additionally, before driving the feed device in a direction opposite to the conveying direction, it is checked whether there is a cutting edge in the conveying channel and, if it is in the conveying channel, the cutting edge is also moved out of the conveying channel.

In a further preferred embodiment of the present invention, a discharge device arranged downstream in the conveying direction is driven to remove the packaging material strand in the conveying direction in order to remove jam, so that in the case of a previous successful separation of the packaging material product from the packaging material strand, the packaging material product is removed and in the case of a non-separation, the packaging material strand is tensioned so that the separation can be initiated.

In a preferred embodiment of the method according to the invention for removing blockages in packaging material, driving the feed device, the discharge device and / or the cutting device when removing jams is preferably slower, in particular at least 50%, 60%, 70%, 80%, 90% or 95% slower , as conveying and / or separating in the manufacture of the packaging material product.

Furthermore, the present invention relates to a method for producing a packaging material product from a fiber starting material, such as a single or multi-layer paper web or a corrugated cardboard web, in particular from recycled paper, which is carried out with the device according to the invention described above.

• 1 eine Ansicht von unten in eine erfindungsgemäße Vorrichtung, wobei die untere und obere Begrenzungswandung zur Veranschaulichung der einzelnen Bestandteile entfernt ist und die Schneide sich in einer Schneidstartstellung befindet;
• 2 die Vorrichtung aus 1, wobei sich die Schneide in einer Schneidmittelstellung befindet;
• 3A die Vorrichtung aus 1, wobei sich die Schneide in einer Schneidendstellung befindet;
• 3B einen vergrößerter Ausschnitt des Bereiches A aus 3A; und
• 4 eine perspektivische Ansicht der Vorrichtung aus 1.
• 5 eine schematische Darstellung einer Vorrichtung zum Fertigen von Verpackungsmaterial;
• 6 eine schematische Darstellung der Förderung eines Verpackungsmaterialstrangs zwischen zwei Förderradpaaren;
• 7 eine schematische Darstellung des Spannens eines Verpackungsmaterialstrangs zwischen zwei Förderradpaaren;
• 8 eine schematische Darstellung des Abtrennens eines Verpackungsmaterialerzeugnisses von einem Verpackungsmaterialstrang durch Verfahren einer Schneide zwischen zwei Förderradpaaren;
• 9 eine schematische Darstellung des Verpackungsmaterialerzeugnisses und des Verpackungsmaterialstrangs unmittelbar nach dem Abtrennen des Verpackungsmaterialerzeugnisses;
• 10 eine Steuerabfolge für die Antriebe der Förderradpaare und der Ablängvorrichtung bei einem Verfahren zum Fertigen eines Verpackungsmaterialerzeugnisses;
• 11 eine alternative Steuerabfolge zum Fertigen eines Verpackungsmaterialerzeugnisses;
• 12 eine schematische Darstellung einer Schneide 605 im Schnitteingriff mit einem Verpackungsmaterialstrang 611;
• 13 eine schematische Darstellung des Auftretens einer Verpackungsmaterialverstopfung beim Abtrennvorgang;
• 14 eine schematische Darstellung der Beseitigung einer Verpackungsmaterialverstopfung; und
• 15 eine exemplarische Steuerabfolge der Antriebe der Förderradpaare und der Schneide beim Beseitigen einer Verpackungsmaterialverstopfung

Further advantages, effects and embodiments of the present invention are evident from the figures shown below. It shows:

• 1 a bottom view of a device according to the invention, wherein the lower and upper boundary wall is removed to illustrate the individual components and the cutting edge is in a cutting start position;
• 2nd the device 1 , wherein the cutting edge is in a cutting medium position;
• 3A the device 1 , with the cutting edge in a cutting end position;
• 3B an enlarged section of area A. 3A ; and
• 4th a perspective view of the device 1 .
• 5 a schematic representation of a device for manufacturing packaging material;
• 6 a schematic representation of the promotion of a strand of packaging material between two pairs of conveyor wheels;
• 7 a schematic representation of the tensioning of a packaging material strand between two pairs of conveyor wheels;
• 8th a schematic representation of the separation of a packaging material product from a packaging material strand by moving a cutting edge between two pairs of conveyor wheels;
• 9 a schematic representation of the packaging material product and the packaging material strand immediately after the separation of the packaging material product;
• 10th a control sequence for the drives of the conveyor wheel pairs and the cutting device in a method for producing a packaging material product;
• 11 an alternative control sequence for manufacturing a packaging material product;
• 12 a schematic representation of a cutting edge 605 in a cut with a strand of packaging material 611 ;
• 13 a schematic representation of the occurrence of a blockage of packaging material during the separation process;
• 14 a schematic representation of the removal of a clogging of packaging material; and
• 15 an exemplary control sequence of the drives of the conveyor wheel pairs and the cutting edge when removing a packaging material blockage

1 shows a bottom view of a preferred embodiment of a device 601 for the manufacture of packaging material products with a lower and upper boundary wall, especially the conveyor channel 619 , is hidden to the individual components of the device 601 to show. 1 shows the device 601 with the cutting edge 605 a cutting device 603 in a preferred cutting start position. 2nd shows the device 1 with the cutting edge 605 in a middle position between a preferred cutting start position and a preferred cutting end position. 3A shows the device 601 out 1 with the cutting edge 605 in a preferred cutting end position. 3B shows an enlarged view of area A. 3A . 4th shows a perspective view of 3A

The device 601 comprises a cutting device 603 to separate the packaging material product (in the 1 to 4th not shown) from a three-dimensional packaging material strand 611 like one in the device 601 made from a single or multi-ply paper web. In the conveying direction F upstream of the cutting device 603 is a pair of feed wheels 613 to promote the Packaging material strand (in the 1 to 4th not shown) arranged. In the conveying direction F downstream of the cutting device 603 is a pair of discharge wheels 615 arranged to remove the strand of packaging material. The feed wheel pair 613 is powered by a drive 635 , in particular in the form of an electric motor. The output of the drive 635 of the feed wheel pair 613 is about a gearbox 637 , in particular a worm gear, with the feed wheel pair 613 , especially with a drive shaft 639 of a feed wheel, in particular the driven feed wheel 641 , coupled.

The conveying direction F preferably means the direction in which the packaging material strand 611 from the feed wheel pair 613 to the discharge wheel pair 615 is promoted. In the preferred embodiment shown here, the packaging material strand 611 directly, ie without deflecting the same, from the feed wheel pair 613 to the discharge wheel pair 615 promoted. However, it should be understood that in a less preferred embodiment, the packaging material strand 611 between the conveyor wheel pairs 613 , 615 can also be redirected. In the broader sense, the direction of conveyance F is therefore to be understood as the direction in which the packaging material strand 611 upstream and downstream of the conveyor, in particular the cutting edge 605 is promoted. For example, there would be several deflection devices between the pairs of feed wheels 613 , 615 the conveying direction F is defined by the direction in which the packaging material strand 611 from that of the cutting edge 605 close upstream and that of the cutting edge 605 downstream deflection device is promoted. With the previous and following information on the arrangement in the conveying direction F upstream and downstream of the cutting device or the cutting edge 605 the condition of the cutting in which the cutting edge is present should always be taken into account 605 in cut engagement with the packaging material strand 611 device. In the preferred embodiment, in which the cutting edge 605 Moving in a translatory manner, a straight line extending along the cutting direction S can thus be regarded as a reference for the upstream and downstream arrangement of components. In embodiments in which the cutting edge moves translationally only in cutting engagement or also moves purely rotationally, it is necessary to assess the upstream and downstream positioning of components relative to the cutting edge 605 to take into account a line extending in the cutting direction S at the time of the cutting intervention. The cutting direction S is the direction in which the cutting edge 605 in cut engagement with the packaging material strand 611 penetrates into this. With a purely rotary cutting edge 605 the tangent in the cutting engagement would therefore have to be taken into account as the cutting direction S.

The discharge wheel pair is driven by its own drive 643 , in particular electric motor, driven. The output of the drive 643 is about a gearbox 645 with the pair of driven wheels 615 , especially with a drive shaft 647 a driven discharge wheel 649 , coupled.

The cutting device 603 is about a drive 651 , in particular in the form of an electric motor. In the 1 to 3rd extends the electric motor 651 the cutting device 603 in the drawing plane and in the cutting direction S. The output of the drive 651 the cutting device 603 is about a gearbox 653 , in particular a cross-cutting gear, with the cutting device 603 coupled. In the embodiment shown here, the transmission comprises 653 the cutting device 603 a transmission gear 655 , for translating or reducing the output movement of the drive 651 . Furthermore, the cutting device's own transmission 653 a conversion gear 657 for converting a rotary movement into a translatory movement, in particular in the cutting direction S.

Preferably, at least one, preferably two, particularly preferably all three, of the drives 635 , 643 and 651 an electric motor with a stationary stator, a rotor movably mounted therefor and a coil arrangement of the rotor or the stator which is supplied with an excitation current, the at least one electric motor being free of an electrical contact coupling for transmitting the excitation current between the stator and the rotor and a device for detecting the position of the rotor. In the embodiments shown here, the device for detecting the position of the rotor, the rotor, the stator and the coil arrangement is within the respective electric motor 635 , 643 and 651 trained and therefore in the 1 to 4th not to be seen. These are in particular brushless DC motors with Hall sensors for the position detection device.

Particularly preferably, at least one, preferably two, particularly preferably all three, of the drives 635 , 643 and 651 an electric motor control unit. In 4th is the subordinate control unit that drives the 643 is assigned to which the Abförderradpaar 613 drives the reference number 21st assigned. A superordinate control unit is preferably provided for controlling at least one, preferably two, particularly preferably all three, of the control subunits. The communication connection for data exchange between the at least one electric motor control subunit and the higher-level control unit with the bus technology is shown in FIGS 1 to 3rd not shown. However, each is connections 27th and 29 shown, via which in particular those with the communication link, in particular with a communication bus, such as a CAN bus, can be connected. The subordinate control units are each on mounting plates on the device, 601 , especially on the electric motors 635 , 643 , 651 appropriate. The mounting plate for the control subunit assigned to the discharge wheel pair is in the 1 to 4th with the reference number 35 Mistake.

The output area is with the reference 39 provided and extends in particular from the Abförderradpaar 615 in the conveying direction F via the device 601 out. The dispensing area within the device is in particular by a dispensing funnel widening in the conveying direction F. 41 limited. Furthermore, there is preferably a power supply unit 43 for the power supply of at least one of the control units and provided.

The cutting edge preferably has 605 several cutting teeth 663 on. The cutting edge preferably has 605 seven cutting teeth 663 on. The cutting tines adjoin one another in particular in a direction transverse to the conveying direction F, in particular orthogonally thereto, and in a direction transverse to the cutting direction S, in particular orthogonal to it. The spikes can cover the entire depth T the cutting edge 605 extend. The depth T the paper cushion making machine is the direction out of the drawing plane in the drawings. The depth T preferably runs transversely, in particular orthogonally, to the cutting direction S and to the conveying direction F.

The tines extend particularly preferably 663 essentially across the entire depth T of the conveyor channel 619 . Under the entire depth T is not to understand that the cutting edge 605 Grind along the upper and lower boundary wall, not shown. Rather, a corresponding gap is preferably provided in the transition area between the upper and lower boundary walls and the cutting edge, so that the cutting edge 605 moved in a contact-free manner with respect to the upper and lower boundary walls. Cutting teeth 605 are preferably formed as triangles tapering in the cutting direction S, which preferably taper pyramid-shaped in the conveying direction F over the thickness of the cutting edge. The in depth T cutting teeth adjoining the upper and lower boundary walls 663 go in the opposite direction to the cutting direction S in particular in alignment in an assembly section 665 the cutting edge 605 over. The cutting edge 605 is, especially about the assembly section 665 with a sledge 667 the cutting device 603 connected, especially screwed. For attaching the cutting edge 605 on the sled 667 are preferably holes 669 in the assembly section 665 the cutting edge 605 intended. Over the holes 669 the cutting edge is preferably with screws or rivets with the slide 667 connected to the cutting edge. The carriage moves in particular in the cutting direction S.

The conversion gear 657 the cutting device 603 preferably comprises two rotatable, in particular around an axis of rotation extending in the conveying direction F. D1 , interconnected joint sections 671 , 673 . The joint sections 671 , 673 are each preferably connected to one another via one end. A joint section 673 is the carriage in the conveying direction 667 facing. The other drive 651 is in particular the transmission gear 655 of the drive 651 facing. The sledge 667 facing joint section 673 is on its axis of rotation D1 end facing away from an axis of rotation extending in particular in the conveying direction F. D2 movable on the sled 667 articulated. The drive 651 , especially the transmission gear 655 facing joint section 671 is about an axis of rotation extending in particular in the conveying direction F. D3 to the transmission gear 655 articulated. Furthermore, the cutting device 603 preferably a tour 675 in cutting direction S. The guide preferably comprises a cylinder, which extends in particular in the cutting direction S. 677 and one in the cutting direction S along the cylinder 677 movable sled shoe 679 . The sledge shoe 679 is preferably fixed to the sled 667 connected. The guidance of the cutting edge is particularly preferred 605 in the conveying direction F downstream of the cutting edge 605 and the gear 653 , especially the conversion gear 657 , in the conveying direction F upstream of the cutting edge 605 arranged. In the embodiment shown is between the axis of rotation D3 and the drive 651 a transmission gear 655 provided to translate the drive rotation. The transmission gear is preferably 655 a worm gear. Furthermore, the transmission 655 in addition to be designed the axis of rotation of the drive 651 to be moved, in particular by 90 ° to the axis of rotation D3 to move.

In the conveying direction F at the level of the cutting device 603 a conveyor channel extends 619 by a boundary wall 617 is limited. The delivery channel preferably extends 619 in the conveying direction upstream and downstream of the cutting device up to the pair of feed wheels 613 and the discharge wheel pair 615 , preferably beyond the conveyor wheel pairs. In the boundary wall 617 is a crack 629 designed such that the cutting edge 605 into the gap without contact 629 can retract and extend.

Before disconnecting the packaging material product 609 from the packaging material strand 611 the packaging material strand extends 611 between the conveyor wheel pairs 613 , 615 . As compared to the 1 to 3rd to see the cutting edge 605 the delivery channel 619 preferably purely translational. The cutting edge moves in particular 605 transverse, preferably orthogonal to the direction of conveyance. The device is preferably oriented such that the cutting edge 605 the delivery channel 619 passes horizontally. Passing through here is to be understood in particular to mean that the cutting edge from one side into the conveying channel during the movement from the cutting start position into the cutting end position in the cutting direction S. 619 retracts and on the opposite side in the cutting direction S from the conveyor channel 619 extends. Entry into the conveyor channel 619 takes place in particular via a withdrawal gap 633 that in the boundary wall 617 is introduced. Extending from the conveyor channel 619 takes place in particular through a gap 629 that in the boundary wall 617 is introduced.

The configurations of the gap 629 and the retreat gap 633 are in detail in connection with the schematic representation in 5 described.

The boundary wall preferably has 617 in the conveying direction F upstream of the feed wheel pair 613 and / or the Abförderradpaars 615 a funnel-shaped section 659 , 661 on, which tapers in the direction of conveyance F. The tapering of the funnel-shaped section preferably occurs 659 , 661 in cutting direction S. Alternatively or additionally, the taper can be formed in a direction orthogonal to the conveying direction and the cutting direction. The funnel-shaped section 659 , 661 can be round or angular. In the embodiment shown here, the funnel-shaped section is angular and only has a taper in the cutting direction S. The tapering of the delivery channel 619 is preferably in the area of the conveyor channel 619 trained in which the packaging material strand 611 with the feed wheel pair 613 and / or the pair of discharge wheels 615 comes into engagement. By tapering the delivery channel 619 On the one hand, the degree of deformation of the essentially two-dimensional paper web in the three-dimensional packaging material strand and the engagement with the pairs of feed wheels can be increased 613 , 615 be relieved.

5 shows a schematic representation of a device 601 to manufacture a packaging material product 609 (in 5 not shown) from a fiber starting material, in particular from a paper cushion strand formed in the device from a single or multi-layer paper web (in 5 not shown). The device has a cutting edge 605 a cutting device for separating the packaging material product 609 from a packaging material strand 611 on. Upstream of the cutting edge 605 in the conveying direction F is a pair of feed wheels 613 to convey the strand of packaging material 611 arranged. Furthermore, the cutting edge is in the direction of flow F downstream 605 a pair of discharge wheels 615 to remove the strand of packaging material 611 arranged.

In the 5 shown position of the cutting edge 605 is a schematic representation of the preferred cutting end position. The cutting edge preferably moves 605 purely translationally from a cutting start position in the cutting direction S to the cutting end position. The cutting direction S is particularly preferably transverse or orthogonal to the conveying direction F. The cutting edge can also be guided in such a way that at least the strand of packaging material 611 when separating the packaging material product 609 translatory, in particular in the cutting direction S, passes through. The cutting edge 605 can also be performed at least in such a way that it cuts the packaging material strand 611 cut translationally across the conveying direction. The cutting edge does not necessarily have to be translatory through the entire packaging material strand 611 process, but in particular can also only be cut with the packaging material strand 611 proceed translationally. It is preferred that the cutting direction S is transverse, particularly preferably orthogonal, to the conveying direction F and / or horizontal.

The device 601 has a delivery channel 619 on by a boundary wall 617 is limited. The delivery channel extends particularly preferably 619 in the conveying direction F at least between the two pairs of conveyor wheels 613 , 615 . In a less preferred embodiment, the conveying channel extends at least at the conveying direction height of the cutting device or of the cutting edge 605 . It is particularly important that the delivery channel 619 especially immediately upstream and downstream of the cutting edge 605 to limit. The conveyor channel 619 is through a boundary wall 617 limited. In the boundary wall 617 is a crack 629 designed such that the cutting edge 605 into the gap without contact 627 can retract and extend. In the conveying direction F upstream of the gap 629 is the delivery channel through a wall section 621 limited, the upstream counter edge delimiting the gap in the conveying direction F upstream 623 having. In the direction of flow downstream of the gap 629 is the delivery channel 619 through a downstream wall section 625 limited, the one the gap 629 downstream counter edge delimiting downstream in the conveying direction F. 627 having.

The cutting edge is preferred 605 when entering and exiting the gap 629 in the conveying direction F from the downstream counter edge 627 and from the upstream counter edge 623 spaced. In 5 the particularly preferred embodiment is shown in which the cutting edge 605 when moving from the cutting start position into the cutting end position is carried out purely translationally and orthogonally to the conveying direction F, so that the spacing of the counter edges 623 , 627 to the cutting edge 605 are constant in the conveying direction F. In less advantageous embodiments, however, the cutting edge can also move transversely to the conveying direction F at an obtuse or acute angle, or can move in part in a rotary manner.

The device 601 can also have one in the boundary wall 617 trained retreat gap 633 have, which is designed such that the cutting edge, in particular contact-free, in the feed channel 619 can retract and extend. The retreat gap 633 is preferably on a section of the boundary wall opposite the gap in the cutting direction S. 617 educated. The withdrawal gap is particularly preferred 633 and / or the gap 629 opposite section of the boundary wall 617 like the gap 629 and / or how the wall sections surrounding the gap are formed. This means in particular that the conveyor channel 619 in the conveying direction F upstream of the withdrawal gap 633 from an upstream wall section 621 ' is limited, the one of the retreat gap 633 upstream counter edge delimiting upstream in the conveying direction 623 ' having. As an alternative or in addition, this means that the delivery channel 619 in the direction of flow F downstream of the withdrawal gap 633 from a downstream wall section 625 ' is limited, the one the withdrawal gap 633 downstream counter edge delimiting downstream in the conveying direction F. 627 ' having. The cutting edge is preferred 605 when moving in and out of the gap in the conveying direction F from the upstream counter edge 623 ' spaced and / or in the conveying direction F from the downstream counter edge 627 ' spaced.

In the conveying direction F at the level of the cutting device 603 a conveyor channel extends 619 by a boundary wall 617 is limited. The delivery channel preferably extends 619 in the conveying direction upstream and downstream of the cutting device up to the pair of feed wheels 613 and the discharge wheel pair 615 , preferably beyond the conveyor wheel pairs. In the boundary wall 617 is a crack 629 designed such that the cutting edge 605 into the gap without contact 629 can retract and extend.

As previously described, the delivery channel 619 in the conveying direction F upstream of the gap 605 through an upstream wall section 621 and downstream of the gap 629 through a downstream wall section 625 limited. If before or after a passage through the conveyor channel 619 in the cutting direction S, this means in particular that the cutting edge passes through the upstream wall section 621 limited section of the production channel 619 drives through. In particular, the cutting edge should be in the cutting start position in the cutting direction S outside the conveying channel 619 in order to convey the strand of packaging material 611 between the conveyor wheel pairs 613 , 615 a snag on the cutting edge 605 , especially at the cutting tip 631 to avoid.

According to the first aspect of the present invention, the feed wheel pair is 613 and the discharge wheel pair 615 each with its own drive 635 , 643 assigned. Also preferred is the cutting device 603 its own drive 651 for independently driving the cutting device 603 of the conveyor wheel pairs 613 , 615 assigned. Own drive is preferably to be understood to mean that the respective drive 635 , 643 , 651 preferably only the respective cutting device 603 or the respective conveyor wheel pair 613 , 615 drives. In principle, the drives can also use the cutting device 603 and the conveyor wheel pairs 613 , 615 drive outgoing work equipment. By independently driving the feed wheel pair 613 and the discharge wheel pair 615 and preferably by independently driving the cutting device 603 there is the particular advantage that the production of the packaging material product with an existing device 601 can be individually adjusted to the paper material to be processed and the desired shape of the packaging material product. In the case of particularly strong paper, for example, the tension of the packaging material strand can 611 before cutting or increase the traversing speed when moving the cutting edge 605 be increased from a cutting start position to a cutting end position. As an alternative or in addition, these measures can be used to continue to ensure adequate cutting despite the wear of the cutting edge occurring over time by adapting the tension or the cutting speed. Furthermore, depending on the material used and the associated increase in dust and cutting chips when cutting, as described above, the tension of the packaging material strand 611 before separating the packaging material product 609 be adjusted. In addition, the independent driving of the wheel pairs ensures that Possibility to drive the pairs of wheels in opposite directions for removing jams and / or to drive the pair of feed wheels in the opposite direction to the conveying direction F.

The above advantages result in particular from the assignment of a separate drive to the conveyor wheel pairs 613 , 615 and preferably to the cutting device 603 . Thus, the risk of dust formation can be reduced, the dust deposit in the device can be reduced and / or the dust removal can be facilitated, while at the same time the maintenance effort for the device can be reduced and, due to the adaptability of the device to different materials and packaging material geometries, the development and manufacturing effort the same can be reduced.

Preferably, one of the feed wheels of the feed wheel pair is not directly from the drive 635 driven. The not directly driven feed wheel 301 is preferably indirectly via the driven feed wheel 641 driven. This is particularly preferably achieved in that the non-driven feed wheel 301 against the driven feed wheel 641 is biased. As especially in the 1 to 3a can be seen, the preload is particularly by undersizing the distance between the wheel axles 303 , 305 realized to each other. By undersizing the feed wheel center distance ZA the conveyor wheels are elastically biased against each other. For setting the feed wheel center distance ZA can preferably at least one of the feed wheels 641 , 301 be moved relative to the other feed wheel or braced with this. A tensioning device is preferred for this 607 provided with one of the feed wheels 641 , 301 over wall sections of the device 601 with the other feed wheel 301 , 641 be tense. The tensioning device preferably comprises a feed wheel 301 with the not shown lower and upper boundary wall connecting wheel mount 309 and at least one, preferably two, the wheel shaft 311 of the feed wheel 301 with the wheel mount 309 connecting fastener 313 like a screw 313 (only for the discharge wheel pair 615 shown). As in 1 shown is the jig 307 preferably on the non-driven feed wheel 301 appropriate. Thus, the feed wheel center distance ZA , for example by operating the fastener 313 be adjusted while the driven feed wheel 641 versus the drive 635 remains in a constant position. Thus, in particular, the tension between the feed wheels can be adapted, in particular depending on the fiber starting material to be processed or the desired packaging material product geometry, in particular without the development effort of the device 601 to increase significantly.

Alternatively or additionally, the discharge wheels 649 , 315 braced against each other. The tension between the removal wheels is particularly preferred 315 , 649 over an undersized conveyor wheel center distance AA between the wheel axle 317 of the driven discharge wheel 649 and the wheel axle 319 the unpowered discharge wheel 315 set. The discharge wheel center distance AA can as for the feed wheel pair 613 described about a jig 321 can be set. The jig 321 of the discharge wheel pair 615 preferably also has a wheel holder 323 with which the output shaft 325 an output gear 315 , 649 on the device 601 is attached and a lanyard 313 for connecting the wheel shaft 325 with the wheel mount 323 the tensioning device 321 .

An under-dimensioned wheel axle distance is to be understood in particular to mean that the distance between the wheel axles 303 , 305 , 317 , 319 of a pair of wheels is smaller than the sum of the radii of both wheels, especially when disassembled. This can be ensured in particular by a certain elasticity of the feed wheels. It is therefore preferred to design the feed wheels from an elastomer body, such as a PU foam body, or to provide them with an elastically deformable rolling area on their outer circumference. The elasticity of the feed wheels can also be increased in that several, in particular between six and fourteen, recesses 327 , In particular, evenly distributed recesses in the circumferential direction 327 are introduced. The recesses are to ensure that the elasticity of the conveyor wheels is largely independent of the rotational position 327 preferably introduced evenly in the circumferential direction in the conveyor wheels.

The in the 1 to 4th shown device 601 shows the state in which there is no strand of packaging material 611 in engagement with the feed wheel pairs 613 , 615 located. In this state, the wheels of the pairs of feed wheels contact each other preferably by the mutual bracing in a particularly circular or elliptical contact surface. Are the conveyor wheel pairs 613 , 615 however, in engagement with the strand of packaging material, the respective conveyor wheels are preferably separated from one another by the strand of packaging material. In a less preferred embodiment, the feed wheels only touch or are spaced apart, so that a power transmission between the feed wheels of a pair of feed wheels 613 , 615 only arises when the packaging material strand 611 engages with the respective pair of feed wheels. Preferably, the Wheel axles 317 , 319 of the discharge wheel pair and / or the wheel axles 303 , 305 of the feed wheel pair aligned in such a way that the tangent TAZ of the feed wheel pair and / or the tangent of the feed wheel pair TAA run parallel to the conveying direction F. In this context, tangent should in particular not exclusively be understood to mean that the conveying wheels only tangent, but rather, in the preferred embodiment in which a contact surface is created between the conveying wheels, a line extending in the conveying direction between the first contact point and the last contact point be considered as tangent.

In less preferred embodiments, the wheel axles 303 , 305 , 317 , 319 one pair of wheels each 615 , 613 be offset from each other in such a way that the tangent TAZ of the feed wheel pair and / or the tangent TAA of the discharge wheel pair are inclined with respect to the conveying direction F. The wheel axles of a feed wheel pair are particularly preferably arranged relative to one another such that the tangents TAZ and TAA run parallel to one another and are particularly preferably identical. This can be achieved in particular in that the wheel axles 303 , 305 , 317 , 319 one pair of wheels each 613 , 615 are arranged one above the other, in particular in the cutting direction S.

At least one drive is preferred 643 , 635 of the conveyor wheel pairs 613 , 615 , particularly preferably both drives 635 , 643 , each via a gear 637 , 645 coupled to at least one feed wheel of the respective feed wheel pair. The coupling is in particular designed such that the output axis of the drive is transverse, in particular orthogonal to the drive axis 305 , 317 of the respective drive wheel runs. A worm gear is particularly preferably used for this.

The 6 to 9 schematically show the flow of a preferred method for manufacturing a packaging material product 609 . In 6 is the conveying of the packaging material strand between two conveying devices in the form of pairs of conveying wheels 613 , 615 shown. This is the packaging material strand 611 via a pair of feed wheels 613 a cutting device 603 fed. In the 6 to 9 is just a cutting edge 605 the cutting device 603 indicated in the form of an arrow. As in 6 to see is the packaging material strand 611 in the conveying direction F over the cutting edge 605 the cutting device is also promoted to a removal device. The discharge device is here in the preferred embodiment of a pair of discharge wheel described above 615 shown. Preferably, the packaging material strand 611 conveyed in the conveying direction until it engages with the pair of discharge wheels 615 device. When conveying the packaging material strand 611 the feed wheel pair and the discharge wheel pair are each at a feed speed n _too and a discharge speed n _down driven. By independently driving the feed wheel pair 613 and the discharge wheel pair 615 , the speeds n _too and n _down both in height and in relation to each other can be set arbitrarily. Depending on the material of the packaging material strand, the speed may be advantageous n _too and n _down to coordinate with each other so that the packaging material strand 611 is already under tension during conveying.

The 6 to 9 show a preferred embodiment of the method according to the invention according to the second aspect of the present invention. This process concerns the manufacture of a packaging material product 609 , in which a strand of packaging material 611 via a feed device 613 , fed to a cutting device, the packaging material product 609 with the cutting device 603 from the packaging material strand 611 separated and the packaging material product 609 via the discharge device 615 is promoted. The feed device 613 and the discharge device 615 before separating the packaging material product 609 as particularly related to 7 described, independently driven and / or braked in such a way that the packaging material strand 611 between the conveyors 613 , 615 is excited.

7 shows a preferred embodiment of the tensioning of the packaging material strand 611 , where the feed wheel pair 613 slowed down, in particular stopped, and the pair of discharge wheels 615 over a predetermined angle φ _{is, from} is driven. Preferably the predetermined angle φ _{is, from} around which the driven discharge wheel 649 rotated, is smaller than a target angle φ _should with which the discharge wheel pair 615 , especially the driven discharge wheel 649 , is driven. The difference between the predetermined angle φ _{is, from} and the target angle φ _should arises in particular from the fact that the feed wheel pair 613 decelerated in such a way, in particular stopped, that the wheels 641 , 301 of the feed wheel pair of the rotational movement of the wheels 649 , 315 at least not completely follow the discharge wheel pair. As in 7 can be seen, the wheels of the feed wheel pair 613 through the over the packaging material strand 611 on the feed wheel pair 613 transmitting voltage also rotated, in particular by an angle φ _{is, too} be rotated. However, the drive wheels 641 , 301 braked or stopped in such a way that the predetermined angle φ _{is, too} the feed wheels are smaller than the predetermined angle φ _{is, from} the discharge wheels so that a tension in the packaging material strand 611 arises. Braking can take place, for example, in that the feed wheel pair 613 driving drive the feed wheel pair 613 communicates a braking torque opposite to the direction of conveyance F. Alternatively or additionally, the braking of the feed wheel pair can 613 also by stopping the feed wheel pair 613 respectively. For example, the feed wheels 301 , 641 of the feed wheel pair must be braced against one another in such a way that even with a feed wheel pair that is not driven at the time of tensioning, there is resistance to a rotational movement of the feed wheels, so that the feed wheels 641 , 301 do not move along the entire path that the discharge wheel pair 615 pretends.

Alternatively to that in 7 Embodiment shown can the tension of the packaging material strand 611 also by braking, in particular stopping, the pair of discharge wheels 615 and by driving the feed wheel pair 613 in the direction opposite to the conveying direction F in an analogous manner. In addition, the clamping can also be carried out by driving both pairs of feed wheels at different speeds, or by driving the pairs of feed wheels in different directions, in particular the pair of feed wheels in the opposite direction to the direction of conveyance F and the pair of discharge wheels 615 in conveying direction F.

8th shows the severing of the packaging material product 609 from the packaging material strand 611 . The position in which the cutting edge is shown is shown 605 already in the packaging material strand 611 has penetrated, but has not yet completely severed it. The cutting edge divides when the cutting edge penetrates the packaging material strand 605 the packaging material strand 611 a force in the cutting direction S with the feed wheels of the feed wheel pair 613 and the discharge wheel pair 615 communicates a torque. Depending on the sharpness of the cutting edge 605 , possibly braking torque of the stopped or braked feed wheel pair and / or the force with which the feed wheel pairs are braced against each other, the cutting edge can retract 605 in the packaging material strand 611 likewise a rotary movement of the feed wheel pair by a difference angle Δφ _{S, too} and / or the Abförderradpaares 615 around a difference angle Δφ _{S, from} cause. As by comparing through 7 and 8th becomes clear, the separation can thereby increase the difference between the desired angles Δφ _{S, too} , Δφ _{S, from} and the predetermined actual angles φ _{is, too} and φ _{is, from} cause.

9 shows a preferred state after the separation process in which the packaging material strand 611 and the packaging material product 609 preferably in the middle of the delivery channel, in particular outside the gap 629 are located. This state can be achieved in particular in that the target angle φ _{should, too} and φ _should occur as a result of the separation of the packaging material product and thereby the packaging material product 609 in the direction of conveyance F and / or the packaging material strand 611 Convey in the direction opposite to the conveying direction F, especially from the gap 629 pull out. Thus, by tuning the predetermined angles φ _{is, too} and φ _{is, from} the feed wheel pair 613 and the discharge wheel pair 615 and the target angle φ _{should, too} and φ _should of the conveyor wheel pairs 613 , 615 a, in particular automatic, mechanism for avoiding clogging of packaging material can be integrated into a method and / or into a device for manufacturing packaging material. In particular, by independently driving the pairs of conveyor wheels, this mechanism can be individually adjusted depending on the fiber starting material to be processed and the desired packaging material product to be produced by adapting the desired angles and, if necessary, the braking torques.

In 10th is the speed curve n and the rotation angle curve φ a method of manufacturing a packaging material product 609 shown. Opposite the in the 6 to 9 The methods shown differ from the courses shown here in particular in that the braked, in particular stopped, feed device 613 , 615 is stopped in such a way that when the packaging material strand is tensioned 611 not moved, especially the drive wheels are not turned. Furthermore, the in 10th represented courses thereby from the in the 6-9 depicted courses that the penetration of the cutting edge 605 in the packaging material strand 611 no movement, in particular no rotational movement through a difference angle Δφ _{S, too} , Δφ _{S, from} , evokes.

In 10th becomes the angle of rotation φ of the drives 635 , 643 , 651 with dashed lines and the speed of the drives 635 , 643 , 651 with solid lines over time t applied. It contains 10th three speed and rotation angle curves, the upper curve the drive 651 the feed device 635 , especially the pair of feed wheels 613 is to be assigned, the middle course of the drive 651 the cutting device 603 is to be assigned and the lower course to the drive 643 the discharge device, in particular the pair of discharge wheels 615 is to be assigned.

The courses are timed in the beginning of the manufacturing process t ₁ , which is associated with the start of funding, the beginning of tension t ₂ With which is accompanied by the end of funding, the beginning of separation t ₃ , which is accompanied by the end of voltage generation, the cutting intervention t ₄ where the cutting edge 605 in engagement with the packaging material strand 611 device, and disconnecting t ₅ where the packaging material product 609 from the packaging material strand 611 is completely separated, in particular the manufacturing process is finished, divided. In the process shown here, the drives 635 , 643 of funding agencies 613 , 315 driven synchronously with each other, so that the drive movement of the drives remains the same 635 and 643 on the packaging material strand 611 the packaging material strand 611 is funded essentially without tension. Alternatively, by a different speed, for example by an increased speed of the drive 643 versus the drive 635 or be promoted under tension by a different transmission ratio of the packaging material strand. However, it is preferred to use the strand of packaging material 611 to convey as little as possible in order to keep dust formation as low as possible, for example due to abrasion on the conveyor wheels. As in 10th shown are the drive 635 and 643 preferably stopped before the tension in the packaging material strand 611 is built up. By stopping the drive 635 , 643 Before the tension is built up, in particular excessive slippage between the packaging material strand and the conveyor wheels and the associated dust formation can be reduced. The predetermined angle φ _{is, from} is by driving the drive 643 over the period t ₂ to t ₃ set in the conveying direction F. The speed of the drive is preferably based on the built-up voltage 643 reset to zero. At the time t ₅ to which the packaging material product 609 from the packaging material strand 611 is disconnected, the drive turns 643 preferably in the conveying direction further to the target angle φ _should .

As in 11 illustrated, the method for manufacturing a packaging material product 609 especially with regard to the tensioning of the packaging material strand 611 be modified. In addition to driving the discharge device via the drive 643 also the feed device via the drive 635 are driven. The drive 635 driven in the opposite direction to the conveyor device F while the drive 643 the discharge device is driven in the conveying direction F. For example, the angle φ _should of the drive 643 be reduced and by the angle φ _{is, too} be compensated in such a way that the packaging material strand 611 is subjected to the same voltage as in 10th . Particularly advantageous when controlling the two drives 635 , 643 in opposite directions is that the same tension can be brought about by applying a smaller force on the part of the individual drives. Furthermore, by driving the drives 635 , 643 in different directions, the integrated mechanism for removing packaging material blockages or for preventing such blockages can be tailored to the material of the fiber starting material to be processed, the cutting edge used and the desired packaging material product geometry. The third variant, for tensioning the packaging material strand 611 the drive 635 is driven opposite to the conveying direction F and the drive 643 stopped or braked is not shown, but can be anticipated in particular by driving the drive 643 between the time t ₂ and t ₃ in 11 is omitted and, depending on the requirements for the voltage to be generated, the angle φ _{is, too} is increased or decreased.

The 13 and 14 schematically show the emergence of packaging material clogging. When moving the cutting edge 605 from the cutting intervention, as in 13 shown in the direction of the gap 629 as in 14 shown, the packaging material strand 611 in the gap 629 be pinched, resulting in a blockage of packaging material in the device 601 can lead. In particular in the case of the devices of the generic type, which have a pair of feed wheels, a pair of discharge wheels and a cutting device arranged between them, there is an increased risk of accumulation between the pairs of conveyor wheels 613 , 615 . The packaging material strand is jammed particularly frequently 611 between the cutting edge 605 and the upstream counter edge 623 . Such blockages can arise especially when the cutting edge 605 the cutting device 603 not or only partially cuts the strand of packaging material, so that no packaging material product 609 is manufactured. Such blockages can also occur when the packaging material product 609 from the packaging material strand 611 is separated and the remaining strand of packaging material in the gap 629 is pinched. According to the third aspect of the present invention, there is provided a method for eliminating packaging material blockages which arise during the manufacture of a packaging material product, during the production of which a packaging material strand, such as a corrugated cardboard web or a three-dimensional packaging material strand formed from a single or multi-layer paper web, in particular from recycled paper, is used a feed device, such as a pair of feed wheels 613 , is conveyed in the conveying direction F to a cutting device. The method according to the invention is characterized in that the feed device when a Packaging material clogging, such as in 15 can be seen in a direction opposite to the conveying direction F is driven. In the event that the packaging material strand during a previous separation process 611 has not been severed, the pair of discharge wheels can also be used to unclog the packaging material. In addition to driving the feed device in the opposite conveying direction F, the removal device is also driven, but in the conveying direction F. The additional driving of the removal device can also be advantageous if the packaging material product is separated 609 from the packaging material strand 611 is done, but this is also in the gap 629 is jammed. Was the packaging material strand 611 not severed, the conveying devices can in particular be driven independently of one another in each case by a drive in such a way that the packaging material strand is tensioned. Subsequently, the packaging material product 609 from the packaging material strand 611 be initiated again.

As in the comparison between 14 and 15 can be seen before driving the feed device, which here as a feed wheel pair 613 is executed, opposite to the conveying direction F, checked whether the cutting edge 605 the cutting device is in a cutting start position or in a cutting end position. In particular, it is checked whether the cutting edge 605 within the conveyor channel 619 located. If this is the case, the cutting edge 605 in particular opposite to the cutting direction S from the conveying channel 619 conveyed out before the feed device is driven in the opposite direction to the conveying direction F.

16 shows the course of the speed n and the angle of rotation φ the drives of a feed device, a discharge device and a cutting device. The upper course preferably relates to 16 the drive 635 of the feed wheel pair 613 , the middle course the drive 651 the cutting device 603 and the lower course the drive 643 of the discharge wheel pair 615 . The angle of rotation φ (dashed line) and the speed n (solid line) are for an exemplary sequence of the process for eliminating the clogging of packaging material over time t applied. It poses t ₆ represents the time at which the material clogging is detected. t ₇ represents the time at which the feed device is driven opposite to the conveying direction F. M ₈ represents the point in time at which the driving of the feed device opposite to the conveying direction F is ended or at which the jam is removed. It is particularly important to drive the feed wheel pair opposite to the conveying direction F for a predetermined time with a predetermined speed and / or a predetermined torque and / or over a predetermined angle, such as the angle shown here φ _{jam, too} on. As previously explained, in addition, the discharge device can for a predetermined time with a predetermined speed and a predetermined torque and / or over a predetermined angle, such as the angle shown here φ _{jam, from} are driven in the conveying direction. Depending on whether the cutting edge 605 the cutting device 603 themselves in the production channel 619 located or not, jam removal, especially between the two points t ₆ and t ₇ , extending the cutting edge, in particular by moving in the direction of cutting S in the opposite direction.

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

Reference symbol list

21st

Control subunit of the discharge wheel pair

27th

Connection of the control subunits of the feed wheel pair

29

Connection of the control subunit of the discharge wheel pair

35

Mounting plate for the control subunit 23

39

Output area

41

Dispensing funnel

43

power adapter

301

unpowered feed wheel

303

Wheel axis of the non-driven feed wheel

305

Wheel axis of the driven feed wheel

307

Clamping device of the feed wheel pair

309

Wheel holder of the clamping device 307

311

Wheel shaft of the non-powered feed wheel 301

313

Lanyard connecting means

315

unpowered discharge wheel

317

Wheel axis of the driven discharge wheel

319

Wheel axis of the non-driven discharge wheel

321

Clamping device of the discharge wheel pair

323

Wheel holder of the clamping device 321

325

Wheel shaft of the unpowered from conveyor wheel

327

Recess in the feed wheel

601

contraption

603

Cutting device

605

Cutting edge

607

Clamping device of the feed wheel pair

609

Packaging material product

611

Strand of packaging material

613

Feed wheel pair

615

Abförderradpaar

617

Boundary wall

619

Conveyor channel

621, 621 '

upstream wall section

623, 623 '

upstream counter edge

625, 625 '

downstream wall section

627, 627 '

downstream counter edge

629

gap

631

Cutting tip

633

Retreat gap

635

Drive, electric motor of the feed wheel pair

637

Gear of the feed wheel pair

639

Drive shaft of the driven feed wheel pair

641

driven feed wheel

643

Drive, electric motor of the discharge wheel pair

645

Transmission gear pair

647

Drive shaft of the driven conveyor wheel pair

649

driven discharge wheel

651

Drive, electric motor of the cutting device

653

Gear of the cutting device

655

Transmission gear

657

Conversion gear

659

funnel-shaped section of the feed wheel pair

661

funnel-shaped section of the discharge wheel pair

663

Cutting teeth

665

Installation section of the cutting edge

667

Sledge of the cutting edge

669

Drilling in the cutting edge

671

Joint section (the transmission gear 655 facing)

673

Joint section (the carriage 667 facing)

675

Guiding the cutting edge in the cutting direction

677

Guide cylinder

679

Sled shoe

T

Depth of paper cushion making machine

F

Direction of conveyance

S

Cutting direction

AA

Feed wheel center distance

ZA

Feed wheel center distance

TAZ

Tangent of the feed wheel pair

TAA

Tangent of the discharge wheel pair

D ₁

Axis of rotation between the two joint sections 671 and 673

D ₂

Axis of rotation between the joint section 673 and the sledge 667

D ₃

Axis of rotation between the joint section 6 71 and the transmission gear 655

n _too

Feed speed

n _down

Discharge speed

φ _{is, too}

predetermined angle of the feed wheel pair

φ _{is, from}

predetermined angle of the discharge wheel pair

φ _{should, too}

Target angle of the feed wheel pair

φ _should

Target angle of the discharge wheel pair

Δφ _{S, too}

Difference angle due to the cutting process on the feed wheel pair

Δφ _{S, from}

Difference angle due to the cutting process on the pair of discharge wheels

φ _{jam, from}

Angle of rotation of the pair of feed wheels when removing jams

φ _{jam, too}

Angle of the rotation of the feed wheel pair when removing jams

t ₁

Beginning of the manufacturing process

t ₂

Start of tension

t ₃

Start of severing

t ₄

Incision

t ₅

Detach the paper upholstery product

t ₆

Occurrence / detection of packaging material clogging

t ₇

Start of driving the feed wheel pair opposite to the conveying direction

t ₈

End of driving the feed wheel pair opposite to the conveying direction

QUOTES INCLUDE IN THE DESCRIPTION

This list of documents listed by the applicant has been generated automatically and is only included 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

• DE 69735564 T2 [0002]
• DE 102014016874 A1 [0004]

Non-patent literature cited

• Standard DIN EN ISO 1924-2 [0009]
• DIN EN ISO 1924-3 [0009]
• Standard DIN EN ISO 2758 [0009]
• Standards DIN EN ISO 1924-2 [0047]
• Standard DIN EN ISO 1924-3 [0047]

Claims (24)

Apparatus (601) for producing a packaging material product (609) from a fiber starting material, such as a single or multi-layer paper web or a corrugated cardboard web, in particular from recycled paper, comprising: a cutting device (603) for separating the packaging material product (609) from a packaging material strand, such as one Corrugated cardboard web or a three-dimensional paper cushion strand (611) formed from the fiber starting material in the device (601); a feed wheel pair (613) arranged upstream of the cutting device (603) in the conveying direction (F) for conveying the strand of packaging material (611); a conveyor wheel pair (615) arranged downstream of the cutting device (603) in the conveying direction (F) for conveying off the strand of packaging material (611), characterized in that the feed wheel pair (613) and the discharge wheel pair (615) each have their own drive (635, 643) for each other independent driving and / or braking of at least one wheel of the respective wheel pair (613, 615) is assigned. Device (601) after Claim 1 , characterized in that the feed wheel pair (613) and / or the discharge wheel pair (615) detects the paper cushion strand (611) between two feed wheels and along or against the feed direction (F) and / or along or against one by a common tangent to a respective one The outer circumference of the conveyor wheels promotes defined direction of execution. Device (601) after Claim 1 or 2nd , characterized in that the conveyor wheels of the feed wheel pair (613) and / or the discharge wheel pair (615) are braced against one another, in particular with a force of at least 1 Newton, 50 Newton, 100 Newton or 150 Newton, preferably of at least 250 Newton, 350 Newton or 450 Newton, particularly preferably of at least 550 Newton, 700 Newton or 900 Newton, and / or the wheel axis distance (AA, ZA) of the feed wheels to each other of a pair of wheels is undersized such that the wheels are elastically preloaded against each other. Device (601) according to any one of the preceding claims, characterized in that the wheel axes of at least one, preferably both, pair of conveyor wheels each run parallel to one another and / or transversely, preferably orthogonally, to the conveying direction (F) or one by a common tangent (TAZ, TAA ) run on a respective outer circumference of the feed wheels and / or run along a plane that extends transversely, preferably orthogonally, to the feed direction (F) or a feed direction defined by a common tangent (TAZ, TAA) on a respective outer circumference of the feed wheels . Device (601) according to one of the preceding claims, characterized in that the feed wheel pairs are aligned in particular in alignment with one another along a plane which has a wheel axis of a feed wheel pair, preferably both wheel axes of both feed wheel pairs, as a normal vector. Device (601) according to one of the preceding claims, characterized in that at least one wheel of at least one pair of wheels comprises an elastically deformable rolling region, the wheel preferably being formed by an elastomer body, such as a PU foam body, or having a corresponding outer coating. Device (601) according to one of the preceding claims, characterized in that the at least one feed wheel of the feed wheel pair and / or the discharge wheel pair via a gear (637, 645), preferably via a worm gear, with the drive (635, 643), the gear (637, 645) preferably reducing a movement amplitude of the drive (635, 643) to a movement amplitude of the at least one feed wheel, in particular with a reduction ratio of 3 to 1 to 25 to 1, preferably of about 5 to 1. Device (601) according to one of the preceding claims, characterized in that the drives (635, 643) are driven and / or braked independently of one another, in particular via a higher-level control unit, in such a way that the pair of feed wheels (613) and the pair of discharge wheels complete the strand of packaging material ( 611) before separating the packaging material product (609) and / or that the removal wheel pair is driven in the opposite direction to the conveying direction (F) when a packaging material blockage occurs. Device (601) according to one of the preceding claims, characterized in that a cutting edge (605) of the cutting device (603) is guided in such a way that it cuts through the packaging material strand (311) translationally transversely to the conveying direction (F). Device (601) according to one of the preceding claims, characterized by a conveying channel which extends at least at the conveying direction height of the cutting device (603) in the conveying direction (F) and is delimited by a boundary wall (617); and a gap (629) formed in the boundary wall (617), which is designed such that a cutting edge of the cutting device (603) can move into and out of the gap (629) without contact. Device (601) according to one of the preceding claims, characterized in that at least one, preferably at least two, particularly preferably at least three, of the drives (635, 643, 651) are controlled by a higher-level control unit, the higher-level control unit preferably having drive-specific control subunits is connected, which control and / or regulate the respective drive (635, 643, 651), the connection between the higher-level control and the drive-specific control subunits preferably taking place via a bus, such as a CAN bus. Device (601) according to one of the preceding claims, characterized in that the drives (635, 643, 651) comprise electric motors with a stationary stator and a rotor movably mounted thereto, preferably there being no electrical contact between the rotor and the stator and the Electric motor preferably comprises a device for detecting the position of the rotor. Method for manufacturing a packaging material product (609), in which a packaging material strand, such as a corrugated cardboard web or a three-dimensional packaging material strand formed from a single or multi-layer paper web, in particular made from recycled paper, is fed via a feed device to a cutting device (603) with the packaging material product (609) the cutting device (603) is separated from the packaging material strand (611) and the packaging material product (609) is conveyed away via a removal device, characterized in that the feed device and the removal device are driven and / or braked independently of one another in this way before the packaging material product (609) is separated that the packaging material strand (611) is stretched between the conveying devices. Procedure according to Claim 13 , characterized in that before the packaging material product (609) is separated: the feed device is braked, in particular stopped, and the removal device is driven in a predetermined direction in the conveying direction (F); the feed device is driven via a predetermined path opposite to the conveying direction (F) and the discharge device is braked, in particular stopped; or the feed device is driven by a predetermined path opposite to the conveying direction (F) and the discharge device is driven by a predetermined path in the conveying direction (F), the driving of the feed device and / or the discharge device preferably being slower before the packaging material product (609) is separated , in particular at least 50%, 60%, 70%, 80%, 90% or 95% slower than the conveying to and / or conveying away from the cutting device. Procedure according to Claim 14 , characterized in that the conveying devices each have a driven feed wheel, preferably each a pair of feed wheels, the driving over a predetermined path by rotating the feed wheel through a predetermined angle (φ _{ist, zu} , φ _{ist, ab),} preferably between 1 ° and 720 °, particularly preferably between 10 ° and 60 °. Procedure according to Claim 14 or 15 , characterized in that the rotary movement of the feed wheel by driving the feed wheel with a torque over a desired angle (φ _{soll, zu} , φ _{soll, ab} ), preferably between 1 ° and 720 °, particularly preferably between 20 ° and 60 °, takes place, the target angle (φ set _{, to} , φ set _{, down} ) is greater than the predetermined angle (φ set _{, to} , φ set _{, down)} , so that the feed wheel uses the torque to exert a tensile force on the packaging material strand (611) exercises, wherein the desired angle (φ _{soll, zu} , φ _{soll, ab} ) is preferably set as a result of the separation of the packaging material product (609), whereby the packaging material product (609) preferably in the conveying direction (F) downstream of the cutting device (603) and / or the remaining packaging material strand (611) is conveyed in the conveying direction (F) upstream of the cutting device (603). Procedure according to one of the Claims 14 to 16 , characterized in that the conveying devices each have a driven feed wheel, preferably each pair of feed wheels, the braking being carried out by reducing the speed of the feed wheel and / or stopping by stopping the feed wheel, and / or the braked conveying device prior to disconnection is braked so strongly that it has tensile forces of at least 10 Newton, 50 Newton, 100 Newton or 150 Newton, preferably of at least 250 Newton, 350 Newton or 450 Newton, particularly preferably of at least 550 Newton, 700 Newton or 900 Newtons, can be exposed without being moved over the entire, in particular without over 75%, 50% or 25% of the predetermined path of the driven device. Procedure according to one of the Claims 13 to 17th , characterized in that the packaging material strand (611) is held so firmly by the conveying devices, in particular in each case by two mutually braced conveyor wheels clamping the packaging material strand (611), that the packaging material strand (611) has tensile forces of at least 10 Newton, 50 Newton, 100 Newton or 150 Newton, preferably of at least 250 Newton, 350 Newton or 450 Newton, particularly preferably of at least 550 Newton, 700 Newton or 900 Newton, can be suspended without being pulled out of the conveyor devices. Procedure according to one of the Claims 13 to 18th , characterized in that the tension acting on the packaging material strand (611) is adapted to the strength of the packaging material strand such that the packaging material product (609) only as a result of a cutting engagement with a cutting edge (605) of the cutting device (603) from the packaging material strand (611 ) is separated, the tension preferably being matched to the cutting edge (605) and the packaging material strand (611) used in such a way that when cutting with a sharp cutting edge (605), the cutting is essentially carried out by cutting the packaging material strand (611), and / or that when cutting with a blunt cutting edge (605), the separation is carried out essentially by tearing, the packaging material strand (611) preferably having a tensile index of 0.04 to 35 Newton meters per gram, particularly preferably 0.75 to 6 Newton meters per gram. A method for removing packaging material blockages which arise during the manufacture of a packaging material product (609), in particular in a method according to one of the Claims 13 to 19th , wherein during manufacture a packaging material strand, such as a corrugated cardboard web or a three-dimensional packaging material strand formed from a single or multi-layer paper web, in particular from recycled paper, is conveyed via a feed device in the conveying direction (F) to a cutting device (603), characterized in that the Feeding device is driven opposite to the conveying direction (F) when a packaging material blockage occurs. Procedure according to Claim 20 , characterized in that before driving the feed device in a direction opposite to the conveying direction (F), it is checked whether a cutting edge (605) of the cutting device is in a cutting start position or in a cutting end position and the cutting edge (605), if it is in the cutting end position is moved into the cutting start position. Procedure according to Claim 20 or 21st , characterized in that an additional discharge device arranged downstream in the conveying direction (F) for conveying the packaging material strand (611) is driven in the conveying direction, so that preferably in the event of a previous successful separation of the packaging material product (609) from the packaging material strand (611), the Packaging material product (609) is conveyed away, and in the event of a separation not taking place, the packaging material strand (611) is tensioned so that the separation can be initiated. Procedure one of the Claims 20 to 22 , characterized in that the driving of the feed device, the discharge device and / or the cutting device (603) during the removal of jams is preferably slower, in particular at least 50%, 60%, 70%, 80%, 90% or 95% slower than conveying to the cutting device. Method for producing a packaging material product (609) from a fiber starting material, such as a single or multi-layer paper web or a corrugated cardboard web, in particular from recycled paper, characterized in that the method with a device (601) according to one of the Claims 1 to 12 is carried out.

Images