EP3603948A1 - Apparatus for manufacturing corrugated cardboard - Google Patents

Abstract

The invention relates to a plant for the production of corrugated cardboard. The system comprises an arrangement (1) for producing a corrugated cardboard web (2) laminated on one side with a corrugated device (24, 26) for producing a corrugated web (22) having a corrugation from a first material web (10), a glue application device (29) for application of glue on tips of the corrugation of the corrugated sheet (22) and a pressing device (35) for pressing a cover sheet (17) onto the glue-coated tips of the corrugated sheet (22). Furthermore, the system has a separating device (40) arranged upstream of the corrugating device (24, 26) for at least regionally separating the first material web (10) in its transverse direction (46) and a holding device which can be actuated downstream of the separating device (40) for holding a by the Separating device (40) produced downstream web section (90) of the first material web (10).

Description

This patent application takes the priority of the German patent application DE 10 2016 209 388.6 claim, the content of which is incorporated herein by reference.

The invention relates to a plant for the production of corrugated cardboard. Furthermore, the invention is directed to an arrangement for producing a one-sided laminated, in particular endless, corrugated cardboard web as part of such a system.

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

The DE 36 35 638 C1 . DE 36 30 556 A1 . DE 36 35 626 C1 . DE 1 196 063 A and DE 44 25 155 A1 such as DE 27 48 675 C2 disclose generic corrugated cardboard systems.

The invention has for its object to provide an improved system for the production of corrugated cardboard. In addition, a correspondingly improved arrangement for the production of a one-sided laminated corrugated web is to be created.

This object is achieved according to the invention by the features specified in independent claims 1, 6, 7 and 8. The essence of the invention is that a separating device is provided, by means of which the first material web or the corrugated web formed from the first material web can be separated at least in some areas. An operable holding device downstream of the separating device is provided for holding a downstream web section of the first material web generated by the separating device.

When the first web of material is completely severed, the arrangement for producing a web of corrugated cardboard laminated on one side is emptied when the upstream or leading web section of the first web of material thus produced is transported further. For example, at least one component of the arrangement for producing a corrugated cardboard web laminated on one side, which is also referred to as a single facer, in particular the corrugated device, is extremely simple to replace and / or repair.

The separating device is able, for example, to separate the first material web at least in regions in its transverse direction or transverse to its transport direction. It is expediently operable to separate the first material web at least in regions. A separation of the first material web in its transverse direction is understood to mean in particular a separation of the first material web perpendicular and / or obliquely to a longitudinal direction or transport direction of the first material web.

The separating device is in particular designed such that it completely or initially only partially separates the first material web when actuated. When completely separated, two web sections are created from the first material web. 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 correspondingly weakening the first material web in its thickness, 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 mechanically or by means of at least one actuated separating element.

According to a preferred embodiment, the separating device is designed as a separating auxiliary device for supporting a 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 manually, 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.

The holding device is preferably displaceable between an inactive and an active position or holding position. The downstream web section of the first material web is preferably held by at least one holding element of the holding device. This is done, for example, by clamping the first material web. Other configurations are alternatively possible.

In its active position, the holding device allows particularly good handling or extremely secure holding of the downstream or lagging web section of the first material web produced by the separating device. The downstream 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 downstream 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.

In an active position, forming the separating device, the holding device is preferably able to hold the first material web in such a way that the first material web, in particular when the system for producing corrugated cardboard starts up or when a corresponding tensile force is exerted on this first material web, in its transverse direction tears. In particular, the holding torque exerted by the holding device on the first material web is greater, preferably much greater, than a starting torque or tensile torque exerted on the first material web when it starts up or when the system for producing corrugated cardboard starts up.

It is advantageous if the corrugating device comprises at least two rotatably mounted or rotatably drivable corrugating rollers, which limit or form a corrugating gap for passing 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 web. It is advantageous if the glue application device also comprises a glue metering roller for the metered transfer of the glue onto the corrugated web.

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

The first web of material is advantageously endless and single-ply. It is transported by the arrangement for producing a one-sided laminated corrugated cardboard web during its operation. The first material web is preferably a smooth web upstream of the corrugating device.

Further advantageous embodiments of the invention are specified in the subclaims.

The separating device can preferably be moved between an active separating position and an inactive parking position. In the active separating position, the separating device advantageously engages at least partially 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 expedient if the separating device comprises a separating device with at least two separating elements which can be displaced in the transverse direction of the first material web in order to produce a wedge cut in the transported first material web. 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. A central section of the first material web preferably remains connected to form the wedge cut. 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 opposing longitudinal edges of the first material web, the central section of the first material web remaining. Alternatively, the separating elements can be displaced in reverse, that is to say laterally away from one another, with separation starting with the middle of the first material web. The separating elements are advantageously designed as cutting elements, perforating elements and / or punching elements. They are able to separate the first material web at least in certain areas, which relates in particular to the length of the separation and / or the depth of the separation.

The separating device advantageously comprises a tear-off device for the controlled tear-off of the first material web. The tear-off device is extremely practical. A stationary cutting device is advantageously assigned to the tear-off device. The first material web preferably remains coherent until it is torn off in a controlled manner. The first material web upstream of the tear-off device is preferably already partially separated in its transverse direction. 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 tear-off takes place after a separation of the first material web in the transverse direction that has already occurred in regions.

The system preferably has a corrugating device changing device for changing the corrugating device, wherein preferably the corrugating device changing device comprises at least one previously inactive corrugating device for replacing the previously active corrugating device. This configuration allows a particularly simple and quick replacement of the previously active corrugating device by 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 of order.

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

It is advantageous if the first material web is guided through the active corrugating device to produce the corrugated web. The first material web is advantageously guided past the inactive corrugating device.

In this displacement of the previously inactive corrugating device and / or previously active corrugating device, for example, according to a preferred embodiment, the first material web is separated, preferably with the aid of a stationary cutting device of the separating device. The first material web is then preferably passed over the cutting device accordingly and is separated on the basis of the present kinematics.

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

The system preferably comprises a transport device downstream of the separating device for transporting a downstream web section of the first material web generated by the separating device to the corrugating device, wherein preferably the transport device has a first transport device and a second transport device arranged at a distance from the first transport device for transporting the downstream generated by the separating device Includes web section of the first material web to the corrugating device.

It is expedient if the transport device comprises at least one drivable, in particular rotationally drivable, transport element, such as a transport belt, a transport roller, a transport roller or the like, for transporting the downstream web 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 is particularly safe and easy to put back into operation, especially after changing the corrugated device. The first material web is thus particularly safe and easy to re-feed into the active corrugating device. The transport of the downstream web section of the first material web is advantageously carried out automatically or automatically.

It is advantageous if, when the transport device for transporting the downstream web section of the first material web is active, the holding device is also active in order to hold or guide and convey this web 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 downstream web section of the first material web generated by the separating device into the active corrugating device.

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

It is expedient if the holding device and the transport device together form a holding transport device for holding and / or transporting the downstream web section of the first material web generated by the separating device.

It is advantageous if the first holding device and the first transport device form a first holding transport unit for this purpose. 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 actuated 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.

It is expedient if 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 downstream web section of the first material web generated by the separating device, 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 downstream web section of the first material web generated by the separating device. It is expedient if the separating device is part of the arrangement for producing a web of corrugated cardboard laminated on one side.

The system advantageously 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 coherent housing. The holding device and / or transport device is also advantageously accommodated in this.

It is expedient if the installation comprises a dispensing device for dispensing the first material web upstream of the arrangement for producing a web of corrugated cardboard laminated on one side, the separating device being arranged between the dispensing device and the corrugated device.

The separating device or the at least one separating element is alternatively formed, for example, 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 by a machine operator or used in a cutting / separating manner. It is advantageous 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 areas and thus simplifies the separation. The holding device advantageously has a first holding device and a second holding device arranged at a distance from the first holding device for holding the first material web. The separation advantageously takes place adjacent to the second holding device.

It is expedient if the transport device transports, in particular transports and / or transports the first material web or a web section thereof. The transport device advantageously has a first transport device and a second transport device arranged at a distance from the first transport device for transporting the first material web or its web section. The separation advantageously takes place adjacent to the second transport device.

Combinations of the embodiments are possible.

The features of subclaims 2 to 5 also relate to preferred developments of independent claims 6, 7 and 8.

The terms "leading", "lagging", "upstream", "downstream", "upstream", "downstream" or the like used here are generally related to the assigned 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 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 erfindungsgemäßen 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.

Preferred embodiments of the invention are described by way of example below with reference to the accompanying drawing. Show:

Fig. 1

1 shows a simplified partial side view of a system according to the invention for producing corrugated cardboard with an arrangement for producing a web of corrugated cardboard laminated on one side,

Fig. 2

a view showing the different separation options of the first material web by a separation device of the in Fig. 1 plant shown illustrates

Fig. 3

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

Fig. 4

a side view, which also the in Fig. 3 shows the separating device shown in its active separating position,

Fig. 5

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

Fig. 6

a view of the in 3 to 5 separation device shown 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 3 to 6 shows the first material web prepared for the wedge cut separation,

Fig. 8

a view of a unit from 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 represented unit,

Fig. 10

another view of the in Figures 8 and 9 represented unit, which is in its active position,

Fig. 11

a Fig. 10 corresponding view, where the unit according to 8 to 11 is in its inactive position

Fig. 12

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

Fig. 13

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

Fig. 14

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

Fig. 15

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

Fig. 16

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

Fig. 17

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

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 , with the in 8 to 12 and 13 to 17 units shown are now in their respective (active) stop positions,

Fig. 20

one of the Fig. 18 corresponding partial view, the first material web having been severed by tearing,

Fig. 21

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

Fig. 22

a Fig. 18 corresponding partial view illustrating an alternative separation, the in 8 to 12 and 13 to 17 units shown are still in their respective stop positions,

23, 24

an empty run of the Fig. 22 shown arrangement for producing a one-sided laminated corrugated cardboard web,

Fig. 25

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

Fig. 26

one of the Fig. 18 corresponding partial view that a restart of the in Fig. 1 shows the arrangement shown for producing a single-sided laminated corrugated cardboard web,

Fig. 27

essentially a side view of an arrangement according to the invention for producing a web of corrugated cardboard laminated on one side, which illustrates an alternative separation of the first material web, and

Fig. 28

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

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

A first unwinding device 3 and a second unrolling device 4, which are designed as first and second splicing devices 3, 4, are arranged upstream of the arrangement 1 for producing a corrugated cardboard web 2 laminated on one side. The first splicing device 3 comprises a first unwinding unit 7 for unrolling a finite first material web 5 from a first material web reel 6 and a second unwinding unit 9 for unrolling a finite second material web from a second material web reel 8. The finite first material web 5 and the finite second material web become 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 in accordance with 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 reel 13 and a fourth unwinding unit 16 for unrolling a finite fourth material web from a fourth material web reel 15. The finite third material web 12 and the finite fourth material web are used to provide an endless 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 corrugated cardboard web 2 laminated on one side. The endless material web 10, 17 are fed separately to the arrangement 1 for producing a corrugated cardboard web 2 laminated on one side.

The arrangement 1 for producing a corrugated cardboard web 2 laminated on one side comprises, for producing an endless corrugated web 22 having a corrugation from the endless first material web 10, a first corrugated roller 24 rotatably mounted about a first axis of rotation 23 and a second corrugated roller 26 rotatably mounted about a second axis of rotation 25. 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 limit a corrugation gap 28 for the passage and corrugation of the endless first material web 5.

In order 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 single-sided laminated corrugated cardboard web 2 has a glue application device 29 downstream of the corrugated gap 28 with respect to the transport direction 27 of the endless first material web 10. The glue application device 29 has a glue container 30, a glue dosing roller 31 arranged in the glue container 30 and a glue application roller 32 arranged in the glue container 30. The glue dosing 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 squeeze roller.

To carry out and glue the corrugated web 22, the glue application roller 32 forms a glue gap 33 with the second corrugating roller 26. Glue (not shown) located 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 therein. The glue metering roller 31 is arranged essentially opposite the second corrugating roller 26 adjacent to the glue application roller 32 and serves to form a uniform layer of glue on the glue application roller 32.

The corrugated web 22 provided with glue is then joined 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 abuts the second corrugating roller 26 in regions, 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 corrugating 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 regions in a space present between the deflection 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 thus pressed against the corrugated web 22 which is provided with glue and is in contact with the second corrugating roller 26.

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

The one-sided laminated corrugated cardboard web 2 is then connected downstream to the storage device 39 in a connecting device (not shown), for example with a laminating web (not shown) to a double-sided laminated corrugated cardboard web or with another single-sided laminated corrugated cardboard web and a laminating web to 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 longitudinally cutting the corrugated cardboard web in partial corrugated cardboard webs and a cross-cutting device (not shown) for cross-cutting the partial corrugated cardboard webs in corrugated cardboard sheets and a stacking device (not shown) for stacking the corrugated cardboard sheets in Stacked arranged.

The arrangement 1 for producing a corrugated cardboard web 2 laminated on one side 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 corrugated cardboard web 2 laminated on one side. It is then arranged between the arrangement 1 for producing a web of corrugated cardboard 2 laminated on one side and the first splicing device 3. 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 web of corrugated cardboard laminated on one side 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 stop-transport unit. They are arranged upstream of the corrugating device.

Furthermore, the arrangement 1 for producing a corrugated cardboard web 2 laminated on one side 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 stopped, the endless first material web 10 is essentially locally fixed or stopped, while it is transported there in a guided manner at a transport speed in the transport direction 27.

How Fig. 2 shows, the separating device 40 can be configured differently. For example, the separating device 40 comprises a separating element 45, which can be moved along a guide 47, which extends in a transverse direction 46 of the endless first material web 10 running perpendicular to the transport direction 27 over the entire endless first material web 10. The separating element 45 can thus be moved in the transverse direction 46 of the endless first material web 10. It can be shifted 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, the separating device 40 is able to produce a wedge cut 50 in the endless first material web 10. The wedge cut 50 is formed by two oblique cuts 51, which run obliquely together 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 separating device 40 for producing the wedge cut 50 is described in more detail. In the Figures 3 to 7 The separating device 40 shown has a guide 53 which extends in the transverse direction 46 of the endless first material web 10 over the entire width of the endless first material web 10.

Two cutting knives 54 can be displaced along the guide 53. Each separating knife 54 is displaceable 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 spaced apart from one another and 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 moved between a separating position and a parking position.

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

Each carriage 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 forms a screw gear with the corresponding threaded spindle 58.

Each threaded spindle 58 can be driven in rotation about its longitudinal central axis. For this purpose, each threaded spindle 58 is assigned a servomotor 59, the drive shaft 60 of which 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 set in rotation via the drive belts 61. The respective screw mechanism between the slide 57 and the associated threaded spindle 58 converts the rotational movement of the threaded spindles 58 into a translatory movement of the slide 57 and thus the separating knife 54. The servomotors 59 are actuated to generate the wedge cut 50 simultaneously during the transport of the endless first material web 10.

For this purpose, the slides 57 or the separating knives 54 are initially adjacent to the inner stops 56. In their separation position, they cut into the transported endless first material web 10 or penetrate it, cutting the endless first material web 10. The carriage 57 or the separating knives 54 are then moved to the outer stops 55 by appropriate actuation of the servomotors 59, whereby each separating knife 54 produces an oblique cut 51 starting from a central region 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 separating knives 54 results in the bevel cuts 51, which together produce the wedge cut 50. The carriage 57 or cutting knife 54 can also be driven or moved differently.

In the following, in particular with reference to the Figures 8 to 12 the second stop 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 the corrugated cardboard or the arrangement 1 for producing an endless corrugated cardboard web 2 laminated on one side is restarted. Otherwise the second stop 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 rotatably or rotatably mounted 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 adjustment 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 one in Fig. 10 shown active position and one in Fig. 11 shown inactive position relocatable.

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

On the drive shaft 71, a drive wheel 73 is rotatably arranged adjacent to the support body 65. Furthermore, the holding roller 64 is connected to a second drive wheel 74 in a rotationally fixed manner. An endless drive belt 75 is guided around the two drive wheels 73, 74.

A drive motor 76 is connected in a rotationally fixed manner to 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 is in contact with the endless first material web 10 and is stationary, the endless first material web 10 is thus held or locally fixed or stopped between the holding roller 64 and the guide roller 63 with a, in particular predetermined, holding torque.

There, a holding gap or clamping gap is limited between the holding roller 64 and the guide roller 63. If the holding roller 64 is driven in rotation, the endless first material web 10 is transported or moved in its transport direction 27. When the corrugated web 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 through 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.

Below is with reference to the Figures 13 to 17 described the first stop transport unit. This unit comprises a guide roller 77, which extends in the transverse direction 46 of the endless first material web 10 and extends 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 rotatably mounted in a storage rack 79. The storage rack 79 is pivotally mounted about a pivot axis. Two swivel cylinder units 80 are used to swivel the storage rack 79 about the swivel axis. Each swivel cylinder unit 80 has a stationary housing 81 and a piston rod 82 which is axially displaceably guided in the respective housing 81. By displacing the piston rods 82 relative to the associated housing 81, this is 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. For this purpose, a rotary drive 83 is provided, the drive shaft 84 of which is in drive connection with the clamping transport roller arrangement 78 via a drive belt 85.

The rotary drive 83 and the drive belt 85 and 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 shown active position, 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. If the clamping transport roller arrangement 78 is in contact with the endless first material web 10 and clamps it against the guide roller 77, the finite first material web 10 is locally fixed or stopped there. The clamp transport roller arrangement 78 is not driven or is stationary.

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 web 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 is shown, the clamping transport roller arrangement 78 is raised from the first guide roller 77 or from the endless first material web 10. Then it 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 previously inactive second corrugating device 87. The corrugating device changing device 86 is essentially arranged 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 hitherto inactive corrugating device 87 also has two corrugating rollers for corrugating the endless first material web 10. In contrast to the corrugating device 87 which has been in use to date, the corrugation 87 which has been inactive so far differs from the corrugation previously used.

Below is with reference to the Figures 18 to 26 the operation of the corrugated cardboard system 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 stop transport unit and the second stop transport unit, both of which are inactive and not on 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 fluted by the first fluting 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.

If, in particular, a production order has ended and there is a new production order with a different flow or corrugated corrugation, the previously active corrugating device is replaced by the previously inactive second corrugating device 87.

For this purpose, the first stop transport unit and the second stop transport unit are actuated. They are swiveled out of 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, as a result of which the endless first material web 10 is locally fixed or stopped there. They are in their respective stopping positions. How Fig. 20 shows, there is then an undefined transverse separation of the endless first material web 10 through a crack 88 formed. The stop-transport units form a separation device.

A leading or upstream 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 corrugated cardboard web 2 laminated on one side, while a trailing web section 90 of the endless first material web 10 in the arrangement 1 for producing a one-sided laminated corrugated cardboard web 2 is fixed by the holding holding transport units. The previously active corrugating device swivels from its active position to its inactive position. With relocation The previously active corrugating device is advantageously separated from the endless first material web from its active position towards its parked position. The previously inactive corrugating device 87 swivels from its previous parking position into its active position.

As an alternative to the undefined tear 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 can be designed differently, as already stated. Here, too, the two holding transport units hold the endless first material web 10 with a, in particular predetermined, holding torque. The holding moments 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 high transport device 38, so that it breaks at a predetermined point.

In Fig. 25 the previously active corrugating device is pivoted in the direction of its parking position. The hitherto inactive corrugating device 87, on the other hand, has been pivoted from its previous parking position towards the active position. The pressure belt module 35 stands still. 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 are still in contact with the endless first material web 10 and are now driven, so that the downstream web section 90 of the endless first material web 10 is thereby guided into the new corrugating device 87. The stop-transport units are active and are in their transport positions. A freewheel is advantageously used when entering the new corrugating device 87.

The stop-transport units are then pivoted back into their inactive positions.

Below is with reference to the Fig. 27 . 28 an alternative separation of the endless first material web 10 is described.

In the Fig. 27 . 28 Arrangement 1 shown for producing a corrugated cardboard web 2 laminated on one side is similar to that in FIG Fig. 1 Arrangement 1 shown for producing a web of corrugated cardboard laminated on one side. It also has a first holding transport unit comprising 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 transport unit and consists of the second holding device 43 and second transport 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 spaced apart from one another.

In comparison with the previous embodiment, the one in Figures 27 . 28 The illustrated arrangement 1 for producing a single-sided laminated corrugated cardboard web 2 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 appropriately guided by a machine operator and forms a separating element or a separating device. The wedge cut 50 is formed by two manually generated bevel cuts 51, which run obliquely together 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 advantageously made manually when the endless first material web 10 is stationary adjacent to the second holding transport unit by appropriate engagement of the cutter knife 45a in the first material web 10, the second holding transport unit advantageously being in its active position or stop position. The endless first material web 10 is guided through the active corrugating device with the corrugating rollers 24, 26. It is guided past the inactive corrugating device 87.

Claims (8)

Plant for the production of corrugated cardboard, a) with an arrangement (1) for producing a one-sided laminated corrugated web (2), which comprises i) a corrugated device (24, 26; 87) for producing a corrugated web (22) having a corrugation from a first material web (10), ii) a glue application device (29) for applying glue to tips of the corrugation of the corrugated web (22), and iii) a pressing device (35) for pressing a cover sheet (17) against the glue-coated tips of the corrugated sheet (22), b) with a separating device (40) arranged upstream of the corrugating device (24, 26; 87) for separating the first material web (10) at least in regions in its transverse direction (46), and c) with an operable holding device downstream of the separating device (40) for holding a downstream web section (90) of the first material web (10) generated by the separating device (40). System according to claim 1, characterized in that the holding device comprises a first holding device (41) and a second holding device (43) arranged at a distance from the first holding device (41) for holding the downstream web section (90) of the first generated by the separating device (40) Material web (10) comprises. System according to claim 1 or 2, characterized in that the holding device in an active position, forming the separating device (40), is able to hold the first material web (10) in such a way that it tears in its transverse direction (46). Plant according to one of the preceding claims, characterized in that the holding device is able to clamp the first material web (10). System according to one of the preceding claims, characterized in that the holding device can be shifted between an inactive position and an active position. Arrangement for producing a one-sided laminated corrugated cardboard web (2) as part of a system for producing corrugated cardboard, comprising a) a corrugating device (24, 26; 87) for producing a corrugated web (22) having a corrugation from a first material web (10), b) a glue application device (29) for applying glue to tips of the corrugation of the corrugated web (22), c) a pressing device (35) for pressing a cover sheet (17) onto the glue-coated tips of the corrugated sheet (22), d) a separating device (40) arranged upstream of the corrugating device (24, 26; 87) for separating the first material web (10) at least in regions in its transverse direction (46), and e) an operable holding device downstream of the separating device (40) for holding a downstream web section (90) of the first material web (10) generated by the separating device (40). A method of making corrugated cardboard comprising the steps - Manufacture of 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 comprises a corrugated device (24, 26; 87) for producing a corrugated web (22) having a corrugation from a first material web (10), - A glue application device (29) for applying glue to tips of the corrugation of the corrugated sheet (22), and a pressing device (35) for pressing a cover sheet (17) against the glue-coated tips of the corrugated sheet (22), - At least regionally separating the first material web (10) in its transverse direction (46) upstream of the corrugating device (24, 26; 87) by means of a separating device (40), and - Holding a downstream web section (90) of the first material web (10) generated by the separating device (40) by means of an operable holding device downstream of the separating device (40). Plant for the production of corrugated cardboard, a) with an arrangement (1) for producing a one-sided laminated corrugated web (2), which comprises i) a corrugated device (24, 26; 87) for producing a corrugated web (22) having a corrugation from a first material web (10), ii) a glue application device (29) for applying glue to tips of the corrugation of the corrugated web (22), and iii) a pressing device (35) for pressing a cover sheet (17) against the glue-coated tips of the corrugated sheet (22), b) with a separating device (40) for at least partially separating the first material web (10) in its transverse direction (46) upstream of the corrugated device (24, 26; 87), and c) with an operable holding device downstream of the separating device (40) for holding a downstream web section (90) of the first material web (10) generated by the separating device (40).

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