EP3463848B1 - System for producing corrugated cardboard - Google Patents

Description

The invention is directed to an arrangement for producing a one-sided laminated, in particular endless, corrugated cardboard web. The invention also relates to an installation and a method for producing corrugated cardboard.

Various plants for the production of corrugated cardboard are already known from the prior art through prior public use.

The generic DE 36 35 638 C1 discloses a corrugator machine with an interchangeable corrugator. The corrugated cardboard machine also has a gluing and preparation tool, which is arranged upstream of the corrugation and has a feed and separation device. With the help of the separating device, a sheet of corrugated material can be severed / cut through near the corrugation. The operation of this corrugated cardboard machine is often not particularly easy.

The DE 36 35 626 C1 discloses a corrugated board machine for producing a single-faced web of corrugated board. A first corrugated roller set is in a rest position on one side of a machine frame, while a second corrugated roller set is in a rest position on another side of the frame. If a flute change is to take place, a cutting device arranged in the machine frame is activated, which cuts through a corrugated sheet.

From the DE 36 30 556 A1 a corrugated cardboard machine for producing a web of corrugated cardboard laminated on one side is known. The corrugated cardboard machine comprises a machine frame in which two sets of corrugated rollers are mounted. A web to be corrugated can be fed to one of the corrugating roller sets. One of the corrugating roller sets is stationary while the other is stationary or movable. If a web of corrugated cardboard with a changed flute height is to be produced, the incoming webs must be cut off by cutting devices upstream of the active corrugating roller set.

From the DE 10 2006 012 352 A1 a web cutting device is known. At least two cutting elements, such as separating blades, are provided. In a cutting situation, a force is transmitted to both cutting elements with a drive device in such a way that they move in opposite directions in the transverse direction of the web.

The DE 1 196 063 A and DE 44 25 155 A1 as DE 27 48 675 C2 disclose further corrugated cardboard plants of the generic type.

The invention is based on the object of creating an improved arrangement for producing a web of corrugated cardboard laminated on one side. In addition, an improved plant and an improved method for the production of corrugated cardboard are to be provided.

According to the invention, this object is achieved by the features specified in the main claims 1, 2 and 3. The essence of the invention is that there is a separating device by means of which the first material web or the corrugated web formed from the first material web can be separated at least in regions.

The at least two separating elements of the separating device can advantageously be displaced synchronously for separating the first material web. You are preferably guided. To form the wedge cut, a central section of the first material web preferably remains contiguous. The central section preferably has a width between 100 mm and 400 mm in the transverse direction of the first material web, which depends on its width and / or tear strength. For this purpose, the separating elements can be displaced towards one another, for example, from mutually opposite longitudinal edges of the first material web, the central section of the first material web remaining. Alternatively, the separating elements can be reversed, that is to say laterally outwardly away from one another, the separation being started offset to the center of the first material web. The separating elements are advantageously designed as cutting elements, perforating elements and / or punching elements. You are able to separate the first material web at least in certain areas, which in particular relates to the length of the separation and / or the depth of the separation.

When the first web of material is completely severed, the arrangement for producing a web of corrugated cardboard laminated on one side runs empty during further transport of a leading web section of the first web of material produced thereby. For example, at least one component of the arrangement for producing a web of corrugated cardboard laminated on one side, which is also referred to as a single facer, in particular the corrugating device, is extremely easy to replace and / or repair.

The separating device is able, for example, to separate the first material web at least in certain areas in its transverse direction or transversely to its transport direction. It is favorable to at least regionally Separation of the first material web can be actuated. Separation of the first material web in its transverse direction is understood to mean, in particular, separation of the first material web perpendicular and / or at an angle to a longitudinal direction or transport direction of the first material web.

The separating device is designed in particular in such a way that it initially only partially separates the first material web when actuated. In the case of complete separation, the first web of material creates, as it were, two web sections. If the first material web is initially only separated in regions, the first material web initially remains coherent, which can be achieved, for example, by a corresponding weakening of the first material web in its thickness, a perforation or the like.

The separating device is designed, for example, as a knife device, punching device or the like. It is, for example, of a translatory and / or rotary type and comprises at least one separating element. The knife device comprises, for example, at least one displaceable cutting knife and / or stationary cutting knife.

The separation is advantageously carried out by machine or by means of at least two actuated separating elements.

According to a preferred embodiment, the separating device is designed as an auxiliary separating device for supporting separation of the first material web. The separating device then comprises, for example, only at least one separating element guide. The separation then takes place, for example, manually or by hand, such as with a cutter knife.

It is advantageous if the separating device is arranged downstream of a dispensing device for dispensing the first material web.

It is advantageous if the corrugating device comprises at least two rotatably mounted or rotatably drivable corrugating rollers which limit or form a corrugated gap for guiding through and corrugating the first material web.

The glue application device advantageously has a glue container for receiving glue and a glue application roller for transferring the glue onto the tips of the corrugation of the corrugated sheet. It is advantageous if the glue application device also comprises a glue metering roller for the metered transfer of the glue onto the corrugated sheet.

The pressure device comprises, for example, at least one pressure roller or a pressure belt module.

The first web of material is expediently endless and single-ply. It is transported through the arrangement for the production of a web of corrugated cardboard laminated on one side during its operation. The first material web is preferably a smooth web upstream of the corrugating device.

The separating device can preferably be displaced between an active separating position and an inactive parking position. In the active separating position, the separating device is expediently in at least partially separating engagement with the first material web to be separated. It is advantageous if, in its inactive parking position, the separating device is out of engagement with the first material web or is arranged at a distance from it.

It is advantageous if, according to an alternative embodiment not according to the invention, the separating device comprises a tear-off device for the controlled tear-off of the first material web. This tear-off device is extremely practical. A stationary cutting device is favorably assigned to the tear-off device. The first web of material preferably remains cohesive until it is torn in a controlled manner. The first material web is preferably already separated in certain areas in the transverse direction upstream of the tear-off device. It is advantageous if the tear-off device is arranged downstream of a separating device for separating the first material web in regions in its transverse direction. In particular, the tearing takes place after the first material web has already been separated in regions in its transverse direction.

The system comprises an actuatable holding device downstream of the separating device for holding a trailing track section of the first material web generated by the separating device, the holding device preferably having a first holding device and a second holding device arranged at a distance from the first holding device for holding the trailing track section of the first web section generated by the separating device Material web includes. This holding device can be displaced between an inactive and an active position or holding position. The trailing web section of the first material web is preferably held by at least one holding element of the holding device. It takes place, for example, by clamping the first web of material. Other configurations are alternatively possible.

In its active position, the holding device allows particularly good handling or extremely secure holding of the trailing web section of the first material web produced by the separating device. The trailing web section of the first material web can be fixed or locally fixed by the holding device. This simplifies the further processing or handling of the trailing web section of the first material web. The holding device is preferably arranged adjacent to the corrugating device and / or separating device. The holding device is preferably arranged between the corrugating device and the separating device.

The holding device is in an active position with the formation of the separating device capable of holding the first material web in such a way that the first material web tears in the transverse direction, especially when the plant for the production of corrugated cardboard starts up or when a corresponding tensile force is exerted on this first material web . In particular, the holding torque exerted by the holding device on the first material web is greater, more preferably substantially greater, than a starting torque or tensile torque exerted on the first material web when starting the same or when starting the plant for the production of corrugated cardboard.

The holding device is preferably able to fix the first material web in a clamping manner.

The system advantageously comprises a corrugating device changing device for changing the corrugating device, the corrugating device changing device preferably comprising at least one previously inactive corrugating device for replacing the previously active corrugating device. This configuration allows a particularly simple and rapid replacement of the previously active corrugating device with a previously inactive corrugating device. For example, the corrugation or corrugation of the corrugated sheet can easily be changed, for example due to a change in job.

In particular, the at least one previously inactive corrugated device can be displaced, in particular pivoted, from an inactive parking position into an active corrugated position.

It is advantageous if the first material web is passed through the active corrugating device for producing the corrugated web. The first material web is expediently guided past the inactive corrugating device.

During this displacement of the previously inactive corrugating device and / or previously active corrugating device, according to a preferred embodiment not according to the invention, the first material web is separated, for example, preferably with the aid of a stationary cutting device of the separating device. The first material web is then preferably guided accordingly over the cutting device and is separated on the basis of the kinematics present.

It is expedient if, before the corrugating device is changed, in particular by the corrugating device changing device, a trailing web section of the first material web produced by the separating device is held by the holding device.

The system preferably has a transport device arranged downstream of the cutting device for transporting a trailing track section of the first material web produced by the cutting device to the corrugating device wherein the transport device preferably comprises a first transport device and a second transport device arranged at a distance from the first transport device for transporting the trailing web section of the first material web produced by the separating device to the corrugating device. It is useful if this transport device comprises at least one drivable, in particular rotatable, transport element, such as a conveyor belt, a transport roller, a transport roller or the like, for transporting the trailing track section of the first material web generated by the separating device into the active corrugating device. The arrangement for producing a web of corrugated cardboard laminated on one side can thus be put into operation again particularly safely and easily, especially after the corrugating device has been changed. The first material web can thus be fed back into the active corrugating device in a particularly safe and simple manner. The trailing web section of the first material web is advantageously transported automatically or in an automated manner.

It is advantageous if, when the transport device is active for transporting the trailing path section of the first material web, the holding device is also active in a leading manner in order to hold or guide and convey this path section during this transport.

The transport device is preferably arranged adjacent to the corrugating device and / or separating device. The transport device is preferably arranged between the corrugating device and the separating device.

The transport device preferably comprises at least one drivable transport element for transporting the through the separating device generated trailing web section of the first material web in the active corrugating device.

It is expedient if the at least one transport element is designed as a roller, the roller advantageously having a freewheel which engages when the corrugated sheet is gripped by the active corrugating device.

It is advantageous if the holding device and the transport device together form a holding-transport device for holding and / or transporting the trailing track section of the first material web produced by the separating device. It is expedient if this holding device and the transport device together form a holding-transport device for holding and / or transporting the trailing track section of the first material web produced by the separating device.

It is advantageous if, for this purpose, the first holding device and the first transport device form a first holding-transport unit. For this purpose, the second holding device and the second transport device advantageously form a second holding-transport unit.

It is advantageous if the holding transport units are arranged at a distance from one another. The holding transport units can preferably be operated independently of one another. It is expedient if the second holding-transport unit is arranged downstream of the first holding-transport unit in relation to the transport direction of the first material web.

Conveniently, a first holding device of the holding device and a first transport device of the transport device form a first holding-transport unit for holding and / or transporting the trailing track section of the first material web generated by the separating device, with preferably a second holding device of the holding device and a second transport device of the transport device form a second holding-transport unit for holding and / or transporting the trailing web section of the first material web produced by the cutting device.

It is useful if the separating device is part of the arrangement for producing a web of corrugated cardboard laminated on one side.

The system favorably has a housing in which the corrugating device, the glue application device, the pressing device and the separating device are accommodated. The housing is formed, for example, by a single housing or a cohesive housing. The holding device and / or transport device is advantageously also accommodated in this.

It is expedient if the system comprises a dispensing device arranged upstream of the arrangement for producing a single-sided laminated corrugated cardboard web for dispensing the first material web, the separating device being arranged between the dispensing device and the corrugating device.

The separating device or the at least one separating element is alternatively, for example, according to an embodiment not according to the invention formed by a cutter knife, which is used freely or unguided for at least regionally separating the first material web in its transverse direction. In particular, the cutter knife is then operated or used in a cutting / separating manner by a machine operator. It is beneficial if a wedge cut is made.

It is expedient if the holding device holds the first material web when it is separated at least in certain regions, thus simplifying the separation. The holding device advantageously has a first holding device and a second holding device, which is arranged at a distance from the first holding device, for holding the first material web. The separation is expediently carried out adjacent to the second holding device.

It is expedient if the transport device transports the first material web or a web section thereof, in particular transports it on and / or transports it away. The transport device advantageously has a first transport device and a second transport device, which is arranged at a distance from the first transport device, for transporting the first material web or its web section. The separation is expediently carried out adjacent to the second transport device.

Combinations of the embodiments are possible.

The terms “leading”, “trailing”, “upstream”, “downstream”, “upstream”, “downstream” or the like used here generally relate to the associated material web, mostly to the endless first material web.

Fig. 1

eine vereinfachte Teil-Seitenansicht einer erfindungsgemäßen Anlage zur Herstellung von Wellpappe mit einer Anordnung zur Herstellung einer einseitig kaschierten Wellpappebahn,

Fig. 2

eine Ansicht, die unterschiedliche Trennungsmöglichkeiten der ersten Materialbahn durch eine Trennungsvorrichtung der in Fig. 1 gezeigten Anlage veranschaulicht,

Fig. 3

eine perspektivische Ansicht einer Trennvorrichtung, die beispielsweise in der in Fig. 1 gezeigten Anlage einsetzbar ist,

Fig. 4

eine Seitenansicht, die auch die in Fig. 3 gezeigte Trennvorrichtung in ihrer aktiven Trennstellung zeigt,

Fig. 5

eine vergrößerte Ansicht, die die in Fig. 4 gezeigte Trennvorrichtung in ihrer aktiven Trennstellung zeigt,

Fig. 6

eine Ansicht der in Fig. 3 bis 5 gezeigten Trennvorrichtung beim Beginn einer Trennung der ersten Materialbahn mittels Keilschnitt,

Fig. 7

eine Ansicht, die die durch die Trennvorrichtung gemäß Fig. 3 bis 6 für die Trennung mittels Keilschnitt vorbereitete erste Materialbahn zeigt,

Fig. 8

eine Ansicht einer Einheit aus einer Halteeinrichtung und einer Transporteinrichtung der in Fig. 1 gezeigten Anlage,

Fig. 9

eine vergrößerte Teilansicht der in Fig. 8 dargestellten Einheit,

Fig. 10

eine weitere Ansicht der in Figuren 8 und 9 dargestellten Einheit, die sich in ihrer aktiven Stellung befindet,

Fig. 11

eine Fig. 10 entsprechende Ansicht, wobei sich dort die Einheit gemäß Fig. 8 bis 11 in ihrer inaktiven Stellung befindet,

Fig. 12

eine Fig. 8 entsprechende perspektivische Ansicht, bei der sich die Einheit gemäß Fig. 8 bis 10 in ihrer inaktiven Stellung befindet,

Fig. 13

eine perspektivische Ansicht einer weiteren Einheit aus einer Halteeinrichtung und einer Transporteinrichtung der in Fig. 1 dargestellten Anlage,

Fig. 14

eine Seitenansicht der in Fig. 13 gezeigten weiteren Einheit, wobei sich die weitere Einheit in ihrer aktiven Stellung befindet,

Fig. 15

eine weitere Ansicht der in Fig. 13, 14 dargestellten weiteren Einheit,

Fig. 16

eine der Fig. 14 entsprechende Ansicht, wobei sich die weitere Einheit gemäß Fig. 13 bis 15 in ihrer inaktiven Stellung befindet,

Fig. 17

eine weitere Ansicht der in Fig. 13 bis 16 gezeigten weiteren Einheit,

Fig. 18

eine Teilansicht der in Fig. 1 gezeigten Anlage, die die Herstellung einer einseitig kaschierten Wellpappebahn veranschaulicht,

Fig. 19

einen Teilausschnitt aus Fig. 18, wobei sich die in Fig. 8 bis 12 und 13 bis 17 gezeigten Einheiten nun in ihrer jeweiligen (aktiven) Haltestellung befinden,

Fig. 20

eine der Fig. 18 entsprechende Teilansicht, wobei die erste Materialbahn nicht-erfindungsgemäß durch Reißen durchtrennt worden ist,

Fig. 21

einen Teilausschnitt aus Fig. 20, die eine Verlagerung der bislang aktiven Riffelvorrichtung in ihre Parkstellung zeigt,

Fig. 22

eine Fig. 18 entsprechende Teilansicht, die eine alternative Trennung veranschaulicht, wobei sich die in Fig. 8 bis 12 und 13 bis 17 gezeigten Einheiten weiterhin in ihrer jeweiligen Haltestellung befinden,

Fig. 23, 24

ein Leerfahren der in Fig. 22 gezeigten Anordnung zur Herstellung einer einseitig kaschierten Wellpappebahn,

Fig. 25

eine Fig. 18 entsprechende Teilansicht, die eine Verlagerung der bislang inaktiven Riffelvorrichtung in die aktive Riffelstellung veranschaulicht,

Fig. 26

eine der Fig. 18 entsprechende Teilansicht, die ein Wiederanfahren der in Fig. 1 gezeigten Anordnung zur Herstellung einer einseitig kaschierten Wellpappebahn zeigt,

Fig. 27

im Wesentlichen eine Seitenansicht einer nichterfindungsgemäßen Anordnung zur Herstellung einer einseitig kaschierten Wellpappebahn, die ein alternatives Trennen der ersten Materialbahn veranschaulicht, und

Fig. 28

eine Fig. 2 ähnelnde Ansicht, die das in Fig. 27 gezeigte Trennen weiter veranschaulicht.

In the following, preferred embodiments of the invention are described by way of example with reference to the accompanying drawings. Show:

Fig. 1

a simplified partial side view of a system according to the invention for the production of corrugated cardboard with an arrangement for the production of a single-sided laminated corrugated cardboard web

Fig. 2

a view showing different ways of separating the first material web by a separating device of the in Fig. 1 illustrated system,

Fig. 3

a perspective view of a separating device, for example, in the in Fig. 1 shown system can be used,

Fig. 4

a side view similar to that shown in Fig. 3 shows the disconnection device shown in its active disconnected position,

Fig. 5

an enlarged view showing the in Fig. 4 shows the disconnection device shown in its active disconnected position,

Fig. 6

a view of the in Figures 3 to 5 shown separating device at the beginning of a separation of the first material web by means of a wedge cut,

Fig. 7

a view showing the by the separator according to FIG Figures 3 to 6 shows the first material web prepared for separation by means of a wedge cut,

Fig. 8

a view of a unit of a holding device and a transport device of the in Fig. 1 shown system,

Fig. 9

an enlarged partial view of the in Fig. 8 shown unit,

Fig. 10

another view of the in Figures 8 and 9 shown unit that is in its active position,

Fig. 11

a Fig. 10 corresponding view, with the unit there according to Figures 8-11 is in its inactive position,

Fig. 12

a Fig. 8 corresponding perspective view in which the unit according to Figures 8-10 is in its inactive position,

Fig. 13

a perspective view of a further unit comprising a holding device and a transport device of the FIG Fig. 1 illustrated system,

Fig. 14

a side view of the in Fig. 13 further unit shown, with the further unit in its active position,

Fig. 15

another view of the in Fig. 13 , 14th further unit shown,

Fig. 16

one of the Fig. 14 corresponding view, the further unit according to Figures 13 to 15 is in its inactive position,

Fig. 17

another view of the in Figures 13 to 16 further unit shown,

Fig. 18

a partial view of the in Fig. 1 shown system, which illustrates the production of a single-sided laminated corrugated cardboard web,

Fig. 19

a partial section Fig. 18 , where the in Figures 8 to 12 and 13 to 17 shown units are now in their respective (active) holding position,

Fig. 20

one of the Fig. 18 Corresponding partial view, the first material web not having been severed by tearing according to the invention,

Fig. 21

a partial section Fig. 20 , which shows a shift of the previously active corrugating device into its parking position,

Fig. 22

a Fig. 18 Corresponding partial view illustrating an alternative separation, the in Figures 8 to 12 and 13 to 17 are still in their respective holding position,

Figures 23, 24

emptying the in Fig. 22 shown arrangement for the production of a one-sided laminated corrugated cardboard web,

Fig. 25

a Fig. 18 Corresponding partial view, which illustrates a shift of the previously inactive corrugation device into the active corrugation position,

Fig. 26

one of the Fig. 18 Corresponding partial view, which allows a restart of the in Fig. 1 shows the arrangement shown for the production of a single-sided laminated corrugated cardboard web,

Fig. 27

essentially a side view of an arrangement not according to the invention for producing a web of corrugated cardboard laminated on one side, which illustrates an alternative separation of the first web of material, and FIG

Fig. 28

a Fig. 2 similar view that the in Fig. 27 Separating shown further illustrated.

First referring to Fig. 1 comprises an installation for the production of corrugated cardboard, which is not completely shown in its entirety, comprises at least one arrangement 1 for the production of an endless web of corrugated cardboard 2 laminated on one side.

A first unwinding device 3 and a second unwinding device 4, which are designed as first and second splicing devices 3, 4, respectively, are arranged upstream of the arrangement 1 for producing a web 2 of corrugated cardboard laminated on one side. The first splicing device 3 comprises a first unwinding unit 7 for unwinding a finite first material web 5 from a first material web roll 6 and a second unwinding unit 9 for unwinding a finite second material web from a second material web roll 8. The finite first material web 5 and the finite second material web are used for Providing an endless first material web 10 connected to one another by means of a connecting and cutting unit 11 of the first splicing device 3.

The second splicing device 4 is designed corresponding to the first splicing device 3. This has a third unwinding unit 14 for unrolling a finite third material web 12 from a third material web roll 13 and a fourth unwinding unit 16 for unrolling a finite fourth material web from a fourth material web roll 15. The finite third material web 12 and the finite fourth material web are used to provide an endless one second material web 17 connected to one another by means of a connecting and cutting unit 18 of the second splicing device 4.

The endless first material web 10 is fed via a first preheating device 19 to the arrangement 1 for producing a web of corrugated cardboard 2 laminated on one side. The endless second material web 17 is fed via a second preheating device 20 and a third preheating device 21 to the arrangement 1 for producing a web 2 of corrugated cardboard laminated on one side. The endless webs of material 10, 17 are fed separately to the arrangement 1 for producing a web of corrugated cardboard 2 laminated on one side.

The arrangement 1 for producing a corrugated cardboard web 2 laminated on one side comprises a first corrugating roller 24 rotatably mounted about a first axis of rotation 23 and a second corrugating roller 26 rotatably mounted about a second axis of rotation 25 for producing an endless corrugated sheet 22 from the endless first material web 10. The axes of rotation 23, 25 run parallel to one another and perpendicular to a transport direction 27 of the endless first material web 5. The corrugating rollers 24, 26 together form a first or active corrugating device. They delimit a corrugated gap 28 for guiding through and corrugating the endless first material web 5.

To connect the endless corrugated web 22 with the endless second material web 17 to form the endless one-sided laminated corrugated cardboard web 2, the arrangement 1 for producing a one-sided laminated corrugated cardboard web 2 has a glue application device 29 downstream of the corrugated gap 28 with regard to the transport direction 27 of the endless first material web 10. The glue application device 29 has a glue container 30, a glue metering roller 31 arranged in the glue container 30 and a glue application roller 32 arranged in the glue container 30. The glue metering roller 31 and the glue application roller 32 are rotatably mounted about corresponding axes of rotation running parallel to one another. The glue metering roller 31 is advantageously designed as a glue squeezing roller.

To guide the corrugated web 22 through and apply glue, the glue application roller 32 forms a glue gap 33 with the second corrugated roller 26. Any glue (not shown) in the glue container 30 is applied to free tips of the corrugation of the transported corrugated web 22 via the glue application roller 32 immersed in it. The glue metering roller 31 is arranged essentially opposite the second corrugated roller 26 adjacent to the glue application roller 32 and serves to form a uniform glue layer on the glue application roller 32.

The corrugated web 22 provided with glue is then joined together in the arrangement 1 for producing a one-sided laminated corrugated cardboard web 2 with the endless second material web 17 transported in a transport direction 34 in order to obtain the endless, one-sided laminated corrugated cardboard web 2.

In order to press the endless second material web 17 against the corrugated web 22 provided with glue, which rests against the second corrugated roller 26 in some areas, the arrangement 1 for producing a corrugated cardboard web 2 laminated on one side has a pressure belt module 35. The pressure belt module 35 is related to the transport of the corrugated web 22 arranged downstream of the glue application device 29. It is arranged above the second corrugated roller 26. The pressure belt module 35 has two rotatably mounted deflection rollers 36 and a pressure belt 37 guided around the deflection rollers 36.

The second corrugated roller 26 engages in some areas in a space present between the deflecting rollers 36, as a result of which the pressure belt 37 is deflected. The pressure belt 37 presses against the endless second material web 17, which in turn is pressed against the corrugated web 22 provided with glue and resting on the second corrugated roller 26.

The web of corrugated cardboard 2 laminated on one side is then fed to a storage device 39 via an upward transport device 38 for intermediate storage and buffering.

The one-sided laminated corrugated cardboard web 2 is then downstream of the storage device 39 in a connecting device (not shown), for example with a lamination web (not shown) to form a two-sided laminated corrugated cardboard web or with a further one-sided laminated corrugated cardboard web and a lamination web to form a five-layer corrugated cardboard web (not shown). connected.

Downstream of the connecting device are, for example, a longitudinal cutting / creasing device (not shown) for longitudinal cutting of the corrugated cardboard web into partial corrugated cardboard webs and a cross cutting device (not shown) for cross cutting the partial corrugated cardboard sheets in corrugated cardboard sheets and a stacking device (not shown) for stacking the corrugated cardboard sheets in Stacks arranged.

The arrangement 1 for producing a single-sided laminated corrugated cardboard web 2 also has a separating device 40, preferably on the input side. Alternatively, the separating device 40 is arranged upstream of the arrangement 1 for producing a single-sided laminated corrugated cardboard web 2. It is then between the arrangement 1 for producing a one-sided laminated Corrugated cardboard web 2 and the first splicing device 3 arranged. The separating device 40 is assigned to the endless first material web 10 and is able to separate it.

Furthermore, the arrangement 1 for producing a single-sided laminated corrugated cardboard web 2 has a first holding device 41 and a first transport device 42, both of which are arranged downstream with respect to the endless first material web 10 to the separating device 40 and are assigned to the endless first material web 10. The first holding device 41 and the first transport device 42 are combined to form a first holding-transport unit. They are arranged upstream of the corrugating device.

Furthermore, the arrangement 1 for producing a single-sided laminated corrugated cardboard web 2 has a second holding device 43 and a second transport device 44, both of which are arranged downstream with respect to the endless first material web 10 to the first holding-transport unit and are assigned to the endless first material web 10. The second holding device 43 and the second transport device 44 are combined to form a second holding-transport unit. They are arranged upstream of the corrugating device.

The first holding-transport unit and the second holding-transport unit are able to hold the endless first material web 10 and / or to transport or convey it in the transport direction 27. When held, the endless first material web 10 is essentially locally fixed or stopped in certain areas, while during transport it is transported there at a transport speed in the transport direction 27.

How Fig. 2 shows, the separating device 40 can be configured differently. For example, according to an embodiment not according to the invention, the separating device 40 comprises a separating element 45 which can be moved along a guide 47 which extends over the entire endless first material web 10 in a transverse direction 46 of the endless first material web 10 running perpendicular to the transport direction 27. The separating element 45 can thus be moved in the transverse direction 46 of the endless first material web 10. It can be moved between a disconnected position and an inactive parking position.

The separating element 45 is designed, for example, as a separating knife and is thus able to produce a transverse, continuous separating cut 48 in the endless first material web 10.

Alternatively, the separating element 45 is designed, for example, as a perforator and is thus able to produce a perforation 49 in the endless first material web 10 in its transverse direction 46.

Alternatively, according to the invention, the separating device 40 is capable of producing a wedge cut 50 in the endless first material web 10. The wedge cut 50 is formed by two bevel cuts 51 which run together obliquely from a respective longitudinal edge 52 of the endless first material web 10 in the transport direction 27, but end at a distance from one another.

With reference to the Figures 3 to 7 the cutting device 40 for producing the wedge cut 50 is described in more detail. In the Figures 3 to 7 The separator 40 shown has a guide 53 extending in the transverse direction 46 of the endless first material web 10 extends over the entire width of the endless first material web 10.

Two cutting knives 54 can be displaced along the guide 53. Each cutting knife 54 can be displaced between an outer stop 55 and an inner stop 56 in the transverse direction 46 of the endless first material web 10. The outer stops 55 are arranged adjacent to the longitudinal edges 52 of the endless first material web 10, while the inner stops 56 are arranged at a distance from one another and are arranged adjacent to a central region of the endless first material web 10. The stops 55, 56 thus determine a separate travel path for each cutting knife 54. The travel paths are aligned with one another and end at a distance from one another. The stops 55, 56 are advantageously adjustable along the guide 53.

The separating knives 54 can advantageously be displaced between a separating position and a parking position.

Each cutting knife 54 is arranged on a slide 57 which is guided along the guide 53.

Each slide 57 is penetrated, for example, by a threaded spindle 58 which has an external thread and is rotatably mounted in an inner and outer stop 55, 56. For this purpose, each slide 57 has a complementary internal thread and, together with the corresponding threaded spindle 58, forms a screw drive.

Each threaded spindle 58 can be driven to rotate about its central longitudinal axis. For this purpose, each threaded spindle 58 is assigned a servomotor 59 and its drive shaft 60 is in drive connection with the respective threaded spindle 58 via a respective drive belt 61.

The guide 53, the stops 55, 56 and the servomotor 59 are arranged together on a cross member 62.

By actuating the servomotors 59, their drive shafts 60 are set in rotation, as a result of which the threaded spindles 58 are also set in rotation via the drive belts 61. The rotational movement of the threaded spindles 58 is converted into a translational movement of the carriages 57 and thus the cutting knife 54 by the respective helical gear between the carriage 57 and the associated threaded spindle 58. The servomotors 59 are actuated to produce the wedge cut 50 at the same time during the transport of the endless first material web 10.

To this end, the carriages 57 or the cutting knives 54 are initially adjacent to the inner stops 56. In their separated position, they cut into the transported endless first material web 10 or penetrate the endless first material web 10 in a cutting manner. The carriages 57 or the cutting knives 54 are then moved to the outer stops 55 by appropriate actuation of the servomotors 59, whereby each cutting knife 54 generates an inclined cut 51 starting from a central area of the endless first material web 10 to the adjacent longitudinal edge 52. Due to the simultaneous transport of the endless first material web 10, the transverse displacement of the severing knives 54 results in the oblique cuts 51, which together result in the wedge cut 50. The carriages 57 or cutting knives 54 can also be driven or displaced differently.

In the following, with particular reference to Figures 8 to 12 the second holding transport unit described. This unit comprises a rotatably mounted guide roller 63 and a holding roller 64, between which the endless first material web 10 runs when the system for producing corrugated cardboard or the arrangement 1 for producing an endless corrugated cardboard web 2 laminated on one side is restarted. Otherwise the second holding transport unit is inactive.

The guide roller 63 extends over the entire width of the endless first material web 10. It is rotatably mounted.

The holding roller 64 is mounted rotatably or rotatably in a support body 65. It extends only over a partial width of the endless first material web 10. The support body 65 is seated in a rotationally fixed manner on a pivot shaft 66 which is pivotably mounted in bearing bodies 67 and runs parallel to the guide roller 63. The support body 65 is connected to an adjusting cylinder unit 68. The adjusting cylinder unit 68 has a stationary housing 69 and a piston rod 70 which can be displaced along the housing 69 and is able to pivot the pivot shaft 66 and thus also the support body 65 with the holding roller 64. The holding roller 64 is between an in Fig. 10 active position shown and one in Fig. 11 inactive position shown displaceable.

A drive shaft 71, which is preferably aligned with the pivot shaft 66, is also connected to the support body 65. The drive shaft 71 is rotatably or rotatably mounted in bearing bodies 72.

A drive wheel 73 is arranged non-rotatably on the drive shaft 71 adjacent to the support body 65. Furthermore, the holding roller 64 is in a rotationally fixed connection with a second drive wheel 74. An endless drive belt 75 is guided around the two drive wheels 73, 74.

A drive motor 76 is in a rotationally fixed connection with the drive shaft 71, so that it is able to set the drive shaft 71 in rotation.

A rotational movement of the drive shaft 71 leads to a rotary drive of the first drive wheel 73 and thus also to a drive of the drive belt 75, as a result of which the second drive wheel 74 and thus also the holding roller 64 coupled to it are set in rotation.

When the holding roller 64 rests against the endless first material web 10 and stands still, the endless first material web 10 is held or locally fixed or stopped between the holding roller 64 and the guide roller 63 with a particularly predetermined holding torque. A holding gap or clamping gap is delimited there between the holding roller 64 and the guide roller 63. When the holding roller 64 is driven in rotation, the endless first material web 10 is guided or moved in its transport direction 27. When the corrugated sheet 22 is gripped by the active corrugating device, a freewheel engages in the holding roller 64. The freewheel is then active. When the holding roller 64 is lifted off the endless first material web 10 and is thus in its inactive position, the endless first material web 10 is neither held by it nor transported by it in the transport direction 27. The holding roller 64, the drive wheels 73, 74, the drive belt 75, the drive shaft 71 and the drive motor 76 are part of the second transport device. The holding roller 64 is also part of the second holding device.

In the following, with reference to the Figures 13 to 17 the first holding transport unit described. This unit comprises a guide roller 77 which extends in the transverse direction 46 of the endless first material web 10 and runs over the entire width of the endless first material web 10. The guide roller 77 is rotatably mounted.

A clamping transport roller arrangement 78 runs parallel to the guide roller 77, which again extends over the entire width of the endless first material web 10 and advantageously carries a plurality of ring projections or rollers.

The clamping transport roller arrangement 78 is mounted in a bearing frame 79 such that it can be driven in rotation. The storage frame 79 is mounted pivotably about a pivot axis. Two swivel cylinder units 80 serve to swivel the bearing frame 79 about the swivel axis. Each swivel cylinder unit 80 has a stationary housing 81 and a piston rod 82 guided axially displaceably in the respective housing 81 Storage rack 79 and thus also the clamping transport roller arrangement 78 can be pivoted.

The clamping transport roller arrangement 78 can be driven in rotation. A rotary drive 83 is provided for this purpose, the drive shaft 84 of which has a drive belt 85 is in drive connection with the clamping transport roller arrangement 78.

The rotary drive 83 and the drive belt 85 as well as the clamping transport roller arrangement 78 are part of the first transport device. The clamping transport roller arrangement 78 is also part of the first holding device.

In their in Fig. 14 The active position shown, the clamping transport roller arrangement 78 is arranged adjacent to the guide roller 77. The clamping transport roller arrangement 78 and the guide roller 77 then rest on opposite sides of the endless first material web 10. When the clamping transport roller arrangement 78 rests against the endless first material web 10 and clamps it with respect to the guide roller 77, the finite first material web 10 is fixed or stopped there. In this case, the clamping transport roller arrangement 78 is not driven or it is at a standstill.

If, on the other hand, the clamping transport roller arrangement 78 is still set in rotation, the endless first material web 10 is thereby transported in the transport direction 27.

When the corrugated sheet 22 is gripped by the active corrugating device, a freewheel engages in the clamping transport roller arrangement 78. The freewheel is then active.

In their inactive position, which in Fig. 16 As shown, the clamping transport roller arrangement 78 is lifted from the first guide roller 77 or from the endless first material web 10. She then has no influence.

The arrangement 1 for producing a web of corrugated cardboard laminated on one side also has a corrugating device changing device 86, which stores a second corrugating device 87 which has been inactive up to now. The corrugating device changing device 86 is arranged essentially between the separating device 40 and the glue application device 29. It is able to replace the previously active corrugating device with the previously inactive corrugating device 87. The previously inactive corrugating device 87 also has two corrugating rollers for corrugating the endless first material web 10. In contrast to the corrugating device previously in use, the previously inactive corrugating device 87 differs in its corrugation from the corrugation used previously.

In the following, with reference to the Figures 18 to 26 the operation of the corrugated board plant is described.

How Fig. 18 shows, the endless first material web 10 runs past the separating device 40. The separating device 40 is inactive and does not act on the endless first material web 10. Furthermore, the endless first material web 10 passes the first holding-transport unit and the second holding-transport unit, which are both inactive and not onto the endless first material web 10 act. The second corrugating device 87 is in its inactive parking position. The endless first material web 10 is corrugated by the first corrugating device and glued by the glue application device 29. The endless second material web 17 is connected to the endless first material web 10 to form the corrugated cardboard web 2 laminated on one side.

When, in particular, a production order has ended and a new production order with a different flute or corrugated web corrugation is present, the previously active corrugating device is replaced by the previously inactive second fluting device 87.

For this purpose, the first holding transport unit and the second holding transport unit are actuated. They are pivoted from their respective inactive positions. The clamping transport roller arrangement 78 and the holding roller 64 press the endless first material web 10 in a clamping manner against the associated guide roller 63 or 77, whereby the endless first material web 10 is fixed or stopped there. They are in their respective stops. How Fig. 20 shows, an undefined transverse separation of the endless first material web 10 then takes place through a resulting tear 88. The holding-transport units form a separating device.

A leading web section 89 of the endless first material web 10 formed by the crack 88 is conveyed out of the arrangement 1 for producing a one-sidedly laminated corrugated cardboard web 2, while a trailing web section 90 of the endless first material web 10 in the arrangement 1 for producing a one-sidedly laminated corrugated cardboard web 2 is fixed by the holding holding transport units. The previously active corrugating device pivots from its active position into its inactive position. When the previously active corrugating device is displaced from its active position in the direction of its parking position, the endless first material web is advantageously separated, not according to the invention. The previously inactive corrugating device 87 pivots from its previous parking position into its active position.

As an alternative to the undefined tearing according to Figures 20, 21 takes place according to Figures 22 to 24 a separation of the endless first material web 10 by the separating device 40, which, as already indicated, can be designed differently. Here, too, the two holding-transport units hold the endless first material web 10 with a particularly predetermined holding torque. The holding torques of the two holding-transport units can be identical or different. The previously active corrugating device transports the endless first material web 10 further, in particular together with the upward transport device 38, so that it tears at a predetermined point.

In Fig. 25 the previously active corrugating device is pivoted in the direction of its parking position. The previously inactive corrugating device 87, on the other hand, is pivoted from its previous parking position in the direction of the active position. The pressure band module 35 is at a standstill. The pressure belt 37 is stopped.

In Fig. 26 the previously inactive corrugating device 87 is pivoted completely into its active position. The clamping transport roller arrangement 78 and the holding roller 64 continue to rest on the endless first material web 10 and are now driven so that the trailing path section 90 of the endless first material web 10 is guided into the new corrugating device 87. The holding transport units are active and are in their transport positions. When entering the new corrugating device 87, a freewheel is favorably used.

The holding transport units are then swiveled back into their inactive positions.

In the following, with reference to the Fig. 27 , 28 an alternative separation, not according to the invention, of the endless first material web 10 is described.

In the Fig. 27 , 28 The arrangement 1 shown for the production of a web of corrugated cardboard 2 laminated on one side is similar to that in FIG Fig. 1 The arrangement 1 shown for the production of a single-sided laminated corrugated cardboard web 2. It also has a first holding-transport unit consisting of the first holding device 41 and the first transport device 42, which is assigned to the endless first material web 10. It also comprises a second holding-transport unit, which is arranged downstream of the first holding-transporting unit and is composed of the second holding device 43 and second transporting device 44, which is advantageously assigned to the endless first material web 10. The holding-transport units are arranged upstream of the active corrugating device and are arranged at a distance from one another.

In comparison with the previous embodiment, the in Figures 27 , 28 The illustrated arrangement 1 for producing a web of corrugated cardboard 2 laminated on one side does not have a mechanical separating device 40 arranged upstream of the active corrugating device.

The wedge cut 50 is produced here manually by a cutter knife 45a, which is guided accordingly by a machine operator and forms a separating element or a separating device. The wedge cut 50 is formed by two manually produced bevel cuts 51, which run together obliquely from a respective longitudinal edge 52 of the endless first material web 10 in the transport direction 27, but end at a distance from one another. The bevel cuts 51 are favorably endless when they are at a standstill The first material web 10 adjacent to the second holding-transport unit is generated manually by corresponding engagement of the cutter knife 45a in the first material web 10, the second holding-transport unit being advantageously in its active position or holding position. The endless first material web 10 is guided through the active corrugating device with the corrugating rollers 24, 26. It is led past the inactive corrugating device 87.

Claims (3)

1. Arrangement for producing a corrugated cardboard web (2) laminated on one side, comprising

   a) a corrugating apparatus (24, 26; 87) for generating a corrugated web (22), which has a corrugation, from a first material web (10),

   b) a glue-applying apparatus (29) for applying glue to tips of the corrugation of the corrugated web (22),

   c) a pressing apparatus (35) for pressing a top web (17) onto the tips, provided with glue, of the corrugated web (22), and

   d) a severing apparatus (40) which is arranged upstream of the corrugating apparatus (24, 26; 87) and which serves for at least regionally severing the first material web (10) in a transverse direction (46) thereof,

   characterised in that

   e) the severing apparatus (40) comprises a severing device with at least two severing elements (54) which are displaceable in the transverse direction (46) of the first material web (10) and which serve for generating a wedge-shaped cut (50) in the transported first material web (10), and

   f) is designed in such a way that it initially only partially severs the first material web (10) when actuated,

   g) an actuable holding apparatus is positioned downstream of the severing apparatus (40), which is displaceable between an inactive position and an active position,

   h) the holding apparatus in its active position allows holding of a trailing web section of the first material web (10) generated by means of the severing apparatus (40), and

   i) the corrugating apparatus (24, 26; 87) is capable of further transporting the first material web (10) so that it tears at the predetermined location.
2. Plant for the production of corrugated cardboard with an arrangement for producing of a corrugated cardboard web (2) laminated on one side according to claim 1.
3. Method of producing corrugated cardboard, comprising the steps of

   - producing a corrugated cardboard web (2) laminated on one side by means of an arrangement (1) for producing a corrugated cardboard web (2) laminated on one side, which arrangement comprises

   -- a corrugating apparatus (24, 26; 87) for generating a corrugated web (22), which has a corrugation, from a first material web (10),

   -- a glue-applying apparatus (29) for applying glue to tips of the corrugation of the corrugated web (22), and

   -- a pressing device (35) for pressing a cover sheet (17) onto the tips, provided with glue, of the corrugated web (22), and

   - at least regionally severing the first material web (10) in a transverse direction (46) thereof upstream of the corrugating apparatus (24, 26; 87) by means of a severing apparatus (40),

   characterised in that

   - a wedge-shaped cut (50) is generated in the transported first material web (10) by means of at least two severing elements (54) of a severing device of the severing apparatus (40) which can be displaced in the transverse direction (46) of the first material web (10),

   - the severing apparatus (40) initially only partially severs the first material web (10) when actuated,

   - an actuable holding apparatus is positioned downstream of the severing apparatus (40), which is displaceable between an inactive position and an active position,

   - the holding apparatus in its active position allows holding of a trailing web section of the first material web (10) generated by means of the severing apparatus (40), and

   - the corrugating apparatus (24, 26; 87) for severing the first material web (10) further transports the first material web (10) so that it tears at the predetermined location.

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