EP3453501A1 - Arrangement for a connection cut in an order change region - Google Patents

Abstract

The invention relates to a connection cutting arrangement for producing connection cut (54) in a conveyed material web (1). The connection cutting arrangement comprises at least one knife device (10) with a cutting knife (11) for cutting engagement in the material web (1) to produce a connecting cut (54) in the material web (1). Furthermore, the at least one knife device (10) has an operable blade angle adjusting device (17) for setting a respective blade angle of the cutting blade (11) to the material web (1). The connecting cut arrangement has at least one presetting unit (18) for actuating the respective cutting knife angle adjusting device (17).

Description

The present patent application takes the priority of the German patent application DE 10 2017 215 712.7 claim, the contents of which are incorporated herein by reference.

The invention relates to a connection cutting arrangement for producing connecting cuts in a material web conveyed in a conveying direction, in particular in a corrugated cardboard web, which is preferably laminated on both sides, preferably at least three layers and, advantageously, on both sides.

Job change cutting devices are known from the prior art, which generate a connection section between two laterally spaced apart longitudinal sections in a material web in a job change. In general, the partial corrugated cardboard webs resulting from the longitudinal cuts are guided in different planes in a cross-cutting device for producing corrugated cardboard sheets. In such job change cutting devices occur in operation occasionally problems that may require a stop of the web or the entire system.

The invention has for its object to provide a connection cutting arrangement, which works particularly reliable, especially at extremely high speeds of the material web. An appropriate corrugated board plant should also be created.

This object is achieved by the features specified in the main claims 1 and 18 features. The core of the invention is that the cutting blade at its angle to the material web or to the conveying direction or transverse direction for producing a correspondingly aligned connecting section to the material web or to the conveying direction or transverse direction is adjustable. By way of example, the cutting blade can be oriented at an angle such that the generated connection cut extends in the material web at an angle to the conveying direction of the material web. The connection section has, for example, a predetermined length and / or a predetermined distance to at least one longitudinal edge of the material web. A complete transection of the material web over its entire width is preferably also possible by means of the cutting knife. The cutting blade is also advantageously adjustable in an angle such that the generated connection cut in the material web extends perpendicular to the conveying direction of the material web. In particular, according to a preferred embodiment, this is possible only when the corrugated cardboard plant is standing or the material web is just stationary.

It is advantageous if the cutting blade adjusts itself at least temporarily even in a corresponding angle to the material web. For this purpose, the cutting blade is conveniently stored accordingly. Conveniently, the cutting blade is mounted pendulum or suspended.

It is expedient if the cutting blade of the at least one blade device is designed as a circular blade. The circular blade preferably has a comparatively small diameter. It is advantageous if the diameter is between 100 mm and 180 mm. Preferably, there is a right angle between the cutting blade and an adjacent surface of the web.

The connection cut arrangement is preferably active during a job change. Under a change of order is here in particular a understood cut or longitudinal section of the web. It is done at the job change preferably a format change. The material web or partial webs produced therefrom may have a changed width after the format change. Before the change of order, in particular a first order is processed, while after the order change, a second order is processed. The partial webs are advantageously fed to individual cross-cutting devices of a cross-cutting device for producing corrugated cardboard sheets from the partial webs.

It is advantageous if the connection cut arrangement comprises between one and four knife devices. If more than one knife device is present, then these are preferably independently adjustable.

It is expedient if the connection cut arrangement is capable of producing a gapless connection between a first or earlier longitudinal section and a second or later longitudinal section by means of the connection section. Alternatively, the connection cut arrangement is able, for example, to create a connection between a longitudinal section and a longitudinal edge of the material web by means of the connection section. Conveniently, endless (partial) webs or blanks can be produced from the material web by the connecting cut arrangement. It is advantageous if the connection cut in the material web is straight. The webs separated from one another by the respective longitudinal section can, as mentioned, be fed to cross-cutting devices of a cross-cutting device.

The arrangement for producing a material web expediently comprises at least one corrugated cardboard production device for producing a single-faced corrugated cardboard web which has a corrugated web and cover web.

The arrangement for producing a material web preferably has a connecting device for connecting the at least one corrugated cardboard web, which has been laminated on one side and is suitably glued, with a laminating web.

It is advantageous if the material web is endless. The material web is in particular three-ply, five-ply or seven-ply.

As used herein, the terms "upstream," "downstream," "downstream," "upstream," "one behind," or the like are conveniently related to the direction of conveyance of the conveyed web.

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

The cutting knife angle adjusting device according to the dependent claim 2 preferably has an actuatable unit, such as a motor or drive, which preferably operates pneumatically, hydraulically and / or electrically.

The cutting blade angle adjusting device according to the dependent claim 3 is on the one hand extremely reliable. On the other hand, this is very simple. Alternatively, the cutter blade angle adjuster includes For example, a stepper motor for the angular adjustment of the cutting blade.

The at least one default unit according to the dependent claim 4 is preferably electrical, more preferably electronic, Art. Conveniently, this is able to operate the respective cutting blade angle adjusting device accordingly or in particular to control. Alternatively, the at least one default unit is designed as a control unit.

It is expedient for the at least one default unit to be in signal connection with the cutting knife angle setting device of the at least one knife device for transmitting corresponding signals.

It is advantageous if the cutting knife angle of the cutting knife engaging in the material web sets itself independently through the conveyed material web or its conveying speed.

Alternatively or additionally, the at least one presetting unit preferably actuates the cutting knife angle adjusting device, in particular automatically or independently. A speed detection arrangement preferably detects the respective conveying speed of the material web, in particular adjacent to the connecting cut arrangement. The conveying speed can be detected directly or indirectly. It can be recorded touching or contactless. Conveniently, the conveying speed of the material web is constant when a processing of a respective order is carried out.

In the dependent claims 6, 7 and 8 preferred cutting blade angle are given.

It is expedient if the first cutting blade transverse angle according to the dependent claim 7 is between 130 ° and 160 °, at the comparatively high conveying speed, which ranges from 5 m / s to 9 m / s.

It is expedient if the second cutting knife transverse angle is between 95 ° and 125 °, at the slower conveying speed, which ranges from 0.5 m / s to 5 m / s.

The brake assembly according to the dependent claim 8 is favorably at least during the cutting process inactive to allow a free oscillation of the cutting blade for cutting blade angle adjustment. It is advantageous if the brake assembly has at least one brake body, which then acts braking or rubbing on the cutting blade, directly or indirectly, attacks.

The positioning detection arrangement according to the dependent claim 10 preferably operates without contact. It is conveniently designed as a sensor arrangement, camera arrangement or the like. The positioning detection assembly detects a position of a blade cross-displacement device with respect to the web of material to precisely control the blade cross-displacement device. Thus, in operation, a respective existing actual angle of the associated cutting blade relative to the material web is precisely adjustable. Conveniently, the positioning detection arrangement is in signal communication with the default unit.

The embodiment according to the dependent claim 11 allows particularly accurate connection sections.

The rotary drive according to the dependent claim 12 is preferably designed as a pneumatic drive. It is preferably in signal connection with the default unit. Alternatively, it is for example a hydraulic drive or electric drive.

The cutting knife displacement device according to the dependent claim 13 is conveniently able to change the distance between the cutting blade and the material web to be cut or an immersion depth of the cutting blade in the material web. Preferably, a displacement of the cutting blade takes place in a vertical direction. It is advantageous if the cutting knife displacement device is in signal communication with the default unit.

Conveniently, according to the dependent claim 14, a displacement speed of the Schneidemessers between the active cutting position and the inactive position regardless of a conveying speed of the material web.

The cutting knife transverse displacement device according to the dependent claim 15 preferably comprises at least one cross member for supporting the at least one knife device. Preferably, the cutting knife transverse displacement device has at least one transverse displacement drive for displacing the at least one knife device along the cross member.

The at least one cross member according to the dependent claim 16 is preferably able to include with the material web a skew angle, which may be up to ± 45 °. Connecting cuts in the material web are so particularly easy and accurate to produce. In particular, cutting waste can be minimized since the connection cut only over a particularly small longitudinal region of the web or perpendicular to this runs.

Conveniently, according to the dependent claim 17, a comparatively high displacement speed of the cutting blade in the transverse direction of the material web at a comparatively high conveying speed of the material web. In comparison with a slowly conveyed material web, the displacement speed of the cutting knife in the transverse direction of the material web is higher in the case of a rapidly conveyed material web.

Fig. 1

eine vereinfachte Ansicht einer erfindungsgemäßen Verbindungsschnittanordnung und einer dieser vorgeordneten Kurz-Querschneidevorrichtung,

Fig. 2

eine Details veranschaulichende Seitenansicht der Verbindungsschnittanordnung gemäß Fig. 1,

Fig. 3

eine perspektivische Ansicht, die vor allem die Messervorrichtung der in Fig. 2 gezeigten Verbindungsschnittanordnung zeigt,

Fig. 4

eine Seitenansicht der in Fig. 3 gezeigten Messervorrichtung, die sich in einer inaktiven oberen Stellung befindet,

Fig. 5

eine Fig. 4 entsprechende Ansicht, wobei sich dort die Messervorrichtung in einer aktiven unteren Schneidestellung befindet,

Fig. 6 bis 8

Draufsichten auf die in Fig. 3 bis 5 gezeigten Messervorrichtungen, wobei sich deren Schneidemesser in unterschiedlichen Schneidemesser-Winkeln befinden,

Fig. 9

eine vereinfachte Draufsicht auf eine Kurz-Querschneidevorrichtung und eine dieser nachgeordneten Verbindungsschnittanordnung entsprechend Fig. 1, wobei diese einen ersten schrägen Verbindungsschnitt erzeugt hat,

Fig. 10

Seitenansichten, die die Messervorrichtung gemäß Fig. 9 in einer aktiven Schneidestellung und einer inaktiven Stellung zeigen,

Fig. 11

eine Fig. 9 entsprechende Draufsicht, wobei die Messervorrichtung einen zweiten schrägen Verbindungsschnitt erzeugt hat, der sich von dem ersten Verbindungsschnitt in seinem Winkel unterscheidet,

Fig. 12 bis 16

verschiedene Ansichten der in Fig. 1 gezeigten Verbindungsschnittanordnung, die unterschiedliche Stellungen der Messervorrichtung zur Erzeugung eines Verbindungsschnitts veranschaulichen, und

Fig. 17

eine Teilseitenansicht einer erfindungsgemäßen Wellpappeanlage, die die Position der Verbindungsschnittanordnung gemäß Fig. 1 bis 16 veranschaulicht,

Fig. 18 bis 21

Draufsichten auf Materialbahnen, die weitere mögliche Verbindungsschnitte zeigen,

Fig. 22

eine Draufsicht auf eine alternative erfindungsgemäße Verbindungsschnittanordnung, und

Fig. 23

eine Seitenansicht der in Fig. 22 dargestellten Verbindungsschnittanordnung.

Hereinafter, a preferred embodiment of the invention will be described by way of example with reference to the accompanying drawings. Showing:

Fig. 1

a simplified view of a connection cutting arrangement according to the invention and one of these upstream short-cutting device,

Fig. 2

a detail illustrative side view of the connection cut arrangement according to Fig. 1 .

Fig. 3

a perspective view, especially the knife device of in Fig. 2 shows the connection cut arrangement shown,

Fig. 4

a side view of in Fig. 3 shown blade device, which is in an inactive upper position,

Fig. 5

a Fig. 4 corresponding view, where there is the knife device in an active lower cutting position,

Fig. 6 to 8

Top views of the in Fig. 3 to 5 knife devices shown, with their cutting knives are at different cutting knife angles,

Fig. 9

a simplified plan view of a short cross-cutting device and a downstream of this connecting cut arrangement accordingly Fig. 1 wherein this has produced a first oblique connection section,

Fig. 10

Side views showing the knife device according to Fig. 9 in an active cutting position and an inactive position,

Fig. 11

a Fig. 9 corresponding plan view, wherein the blade device has generated a second oblique connection section, which differs from the first connection section in its angle,

Fig. 12 to 16

different views of in Fig. 1 shown connecting sectional arrangement, which illustrate different positions of the blade device for generating a connection section, and

Fig. 17

a partial side view of a corrugated board according to the invention, the position of the connecting section arrangement according to Fig. 1 to 16 illustrates

Fig. 18 to 21

Plan views of webs showing further possible connection cuts

Fig. 22

a plan view of an alternative connection arrangement according to the invention, and

Fig. 23

a side view of in Fig. 22 illustrated connection cut arrangement.

Referring first to Fig. 17 has a corrugated cardboard plant not shown in its entirety for the production of corrugated sheets from a double-faced laminated corrugated cardboard web 1 at least one corrugated board manufacturing apparatus for producing a respective single-faced laminated corrugated cardboard web.

The at least one corrugated web production device comprises at least one corrugating device for producing a respective corrugated web from a, in particular endless, material web. Furthermore, the at least one corrugated cardboard production device has at least one glue application device for applying glue on tips of the respective corrugated web. It also comprises at least one pressing device for pressing a respective smooth, in particular endless, material web against the associated glued corrugated web to form the corrugated cardboard web laminated on one side.

Downstream of the at least one corrugated board manufacturing device, the corrugated cardboard plant has a gluing unit which glues the respective corrugated web of the at least one single-faced corrugated cardboard web.

Downstream of the gluing unit, the corrugated cardboard plant comprises a heating-pressing device which comprises a heating table and above which a pressing device. The at least one corrugated cardboard web laminated on one side and a, in particular endless, laminating web are guided through a nip defined by the pressing device and the heating table, where the at least one corrugated cardboard web and the laminating web laminated on one side are pressed together and glued together.

In the heating-pressing device, the double-sided laminated, at least three-ply corrugated cardboard web 1 is formed, which is endless and in Fig. 1 is shown. The double-faced laminated corrugated cardboard web 1 is continuously conveyed in a conveying direction 2.

The heating-pressing device is downstream of a short cross-cutting device 56 in the conveying direction 2, which comprises a knife cylinder 57 and a counter-cylinder 58 arranged below it. The knife cylinder 57 and the counter-cylinder 58 are rotatably mounted, wherein the axes of rotation parallel to each other and perpendicular to the conveying direction 2 of the double-sided laminated corrugated cardboard web 1 run. The Knife cylinder 57 and / or the counter-cylinder 58 is / are in drive connection with at least one drive motor.

The knife cylinder 57 has a cylinder jacket to which a cutting blade is attached with a cutting edge. Also, the counter-cylinder 58 has a cylinder jacket to which a counter knife is attached with a cutting edge. On the cylinder surface of the counter-cylinder 58, a number of counter-body elements is further arranged, which are displaceable between two radially projecting stops extending over a width of the counter-cylinder 58, mounted on the cylinder jacket.

The short cross cutting device 56 is capable of producing a cut extending across the full width of the double faced corrugated cardboard web 1. For this purpose, the knife cylinder 57 and the counter-cylinder 58 are set in rotation in such a way that they interact in a cutting manner during the cutting process. Furthermore, the short cross-cutting device 56 is capable of producing a cut having a certain length and a certain distance from a longitudinal edge of the double-faced laminated corrugated cardboard web 1. For this purpose, the counter-body elements are selected or adjusted accordingly. For the cutting operation, the knife cylinder 57 and the counter-cylinder 58 are set in rotation such that the knife of the knife cylinder 57 interacts with the counter-body elements.

The short cross-cutting device 56 also serves on the one hand to safely remove starting waste and on the other hand to carry out order or format changes. With the short cross-cutting device 56 are in a format change perpendicular or oblique to the conveying direction 2 of the double-sided laminated corrugated cardboard web 1 connecting sections produced.

The short cross-cutting device 56 is downstream of the corrugated cardboard plant for performing job changes in the conveying direction 2, a job change cutting device 3, which is designed as a longitudinal cutting / scoring device.

Between the short-cross cutting device 56 and the job change cutting device 3, a connecting section 4 of the corrugated cardboard plant is arranged downstream.

The job change cutting device 3 comprises at least one longitudinal cutting station 58. The at least one longitudinal cutting station 58 has a, in particular drehantreibbares, knife which is adjustable perpendicular to the conveying direction 2 and with the two-sided laminated corrugated cardboard web 1 at least one longitudinal section in this engageable ,

Conveniently, the job change cutting device 3 has on the other side of the double-faced laminated corrugated cardboard web 1 at least one brush roller, which cooperates with the knife when the blade engages intersecting in the two-sided laminated corrugated cardboard web 1.

The job change cutting device 3 further comprises at least one scoring station with at least two tool beds, which are arranged mirror-symmetrically to the double-sided laminated corrugated cardboard web 1. On the tool beds are arranged on tool carriers, transversely to the conveying direction 2 of the double-sided laminated corrugated cardboard web 1 individually movable Creasing provided. In each case two scoring tools are arranged in pairs in the conveying direction 2 on a tool carrier.

The order change cutting device 3 is capable of producing a first longitudinal section in the double-faced laminated corrugated cardboard web 1, which is shown in FIG Fig. 1 is indicated. The first longitudinal section is assigned the reference numeral 5 there.

To change a blank of the double-sided laminated corrugated cardboard web 1, the job change cutting device 3 is able to produce in the two-sided corrugated paperboard web 1 a second longitudinal section, the in Fig. 1 the reference numeral 6 is assigned. The longitudinal sections 5, 6 extend in the conveying direction 2 of the double-sided laminated corrugated cardboard web 1 and each have a constant distance to a longitudinal edge 7 of the double-faced laminated corrugated web 1. The distance between the longitudinal cuts 5, 6 to the longitudinal edges 7 is different, so that the final two-sided laminated corrugated cardboard webs 1 or part corrugated cardboard webs produced thereby have a different width perpendicular to the conveying direction 2. Between the longitudinal sections 5, 6 is perpendicular to the conveying direction 2, a distance. The second longitudinal section 6 follows the first longitudinal section 5. The longitudinal sections 5, 6 are substantially offset relative to one another in the conveying direction 2. Conveniently, the longitudinal sections 5, 6 overlap in regions in the conveying direction 2.

The connecting cut arrangement 4 comprises a cross member 8, which according to this embodiment extends perpendicular to the conveying direction 2 over the double-faced laminated corrugated cardboard web 1 and preferably on both sides of the double-faced laminated corrugated cardboard web 1 on a floor or Supported underground. On the cross member 8, a guide assembly 9 is formed, which extends along the cross member 8 and thus perpendicular to the conveying direction 2.

The connection cut arrangement 4 also comprises a knife device 10 with a circular blade 11 having a circumferential or annular cutting edge 28 which is rotatably drivable about a, in particular horizontal, rotation axis 12. The axis of rotation 12 coincides with a central axis of the circular blade 11. The circular blade 11 is connected to a rotary drive 13 in drive connection, which is designed as a pneumatic rotary drive. In particular, the circular blade 11 is in drive connection with a drive shaft of the rotary drive 13 that can be driven in rotation. The drive connection between the rotary drive 13 and the circular blade 11 may be direct or indirect type.

The knife device 10 is in its entirety along the guide assembly 9, ie in the transverse direction of the double-faced laminated corrugated cardboard web 1, displaced. For this purpose, a transverse displacement device 14 with a transverse displacement drive is present.

The circular blade 11 is also located between an active lower cutting position for cutting into the corrugated cardboard web 1 (FIG. Fig. 1 ) and an inactive upper position outside the corrugated cardboard web 1 displaced. This is done by a height displacement device 15.

The circular blade 11 is also pivotable about a pivot axis 16 which is perpendicular to the axis of rotation 12 and extending vertically here. For this purpose, the knife device 10 has an angle adjustment device 17.

Furthermore, the connection section arrangement 4 has an electronic default unit 18 which is in signal communication with the rotary drive 13 via a first signal line 19 for driving the same. The default unit 18 is connected to the transverse displacement drive via a second signal line 20 for driving the same in signal connection. It is connected via a third signal line 21 with the height displacement device 15 for driving the same in signal connection. The default unit 18 is connected via a fourth signal line 22 to the angle setting device 17 for driving the same in signal connection.

Furthermore, the default unit 18 is via a fifth signal line 23 (not shown) with a higher-level electronic control in signal connection to receive from this information or signals, for example, new orders. The default unit 18 also receives via a sixth signal line 24 from a positioning detection arrangement 25 respective position signals of the circular blade 11. The default unit 18 is connected via a seventh signal line 26 with a web speed detection device 27 for detecting a prevailing conveying speed of the double-faced laminated corrugated cardboard web 1 in the Conveying direction 2 in signal connection. Alternatively, there are each wireless signal connections.

The web speed detecting device 27 is disposed between the short-cross cutter 3 and the connecting cut device 4. It is arranged adjacent to the connection cut arrangement 4. Alternatively, this is arranged elsewhere in the corrugated cardboard plant. Now also referring to the Fig. 2 to 8 For example, the connection cut arrangement 4 will be described in more detail in structure.

The rotary drive 13 is arranged together with circular blade 11 on a rigid support 29, which in turn by means of a length-variable lifting assembly 30 in its, in particular vertical, distance to the double-sided laminated corrugated cardboard web 1, in particular to the surface, is variable. The lifting arrangement 30 has a lifting rod 31 which is displaceable along a lifting axis 31a and extends straight. The lifting axis 31a extends vertically or perpendicular to an adjacent surface of the double-sided laminated corrugated cardboard web 1. The carrier 29 is displaceable by means of the lifting arrangement 30 along the lifting axis 31a. He is firmly attached to the lifting rod 31. The lifting arrangement 30 is part of the height displacement device 15th

The lifting rod 31 also carries a counter body 32, which is in rotationally fixed connection with this and thus also with the circular blade 11. The counter body 32 is designed as a partial ring body and has an outer peripheral surface 33. It extends horizontally.

The lifting rod 31 is guided in a guide arrangement 34. The guide arrangement 34 comprises two superimposed guide body 35 through which the lifting rod 31 is guided. The guide body 35 are arranged on a support member 36.

Furthermore, the guide arrangement 34 has an upper guide element 37, which is likewise arranged on the support part 36. The lifting rod 31 is also guided by the guide member 37. The guide member 37 carries a plurality of brake pads 38 which are arranged around the lifting axis 31a around and are capable of braking outside abut the lift rod 31 circumferentially.

The lifting arrangement 30 comprises a pneumatic cylinder unit 39, which sits on top of the supporting part 36. The pneumatic cylinder unit 39 has an inner working space in which a gas is located and a piston is arranged to be displaceable. The piston divides the working space into a first part working space and a second part working space. The first part-working space communicates with a first pneumatic port 40 in fluid communication, while the second part-working space communicates with a second pneumatic port 41 in fluid communication. The working space is bounded by a housing 42 of the pneumatic cylinder unit 39, on which the pneumatic connections 40, 41 are arranged.

The lifting rod 31 is axially displaceable by displacement of the piston. For this purpose, the lifting rod 31 with the piston in axially fixed, direct or indirect, compound.

The pneumatic ports 40, 41 are in fluid communication with a pneumatic pressure source for axially displacing the piston in the housing 42. Depending on a pressurization of the first or second partial working space of the piston and thus the lifting rod 31 in an extension direction or insertion direction is axially displaceable.

On the lifting rod 31 is seated an axial stop 43, which abuts the top of the carrier 29. The axial stop 43 is secured at least axially with respect to the lifting rod 31.

Further, the lifting rod 31 carries according to one embodiment, a sensor ring assembly 44 which engages the edge in a formed in the carrier 29 recess 45. The sensor ring assembly 44 is fixed in the axial direction and circumferential direction of the lifting rod 31. Adjacent to the sensor ring assembly 44, a sensor 46 for interacting with the sensor ring assembly 44 is secured to the support member 36. An embodiment without sensor ring arrangement 44 and sensor 46 is preferred.

On the support member 36 is disposed on the lifting rod 31 side facing away from the transverse displacement drive. The transverse displacement drive is designed as a direct drive and allows a linear displacement of the blade device 10 along the guide assembly. 9

The connecting section arrangement 4 has a pneumatic cylinder unit 47 with an axially displaceable abutment body 48, which is led out of a housing 49 of the pneumatic cylinder unit 47 and is fixedly connected to a piston displaceable along a working space of the pneumatic cylinder unit 47. The stopper body 48 is favorably covered with a soft component. It extends in the conveying direction 2. The pneumatic cylinder unit 47 and the counter body 32 are part of the angle adjusting device 17.

The cross member 8 is supported via a stator assembly 50 relative to the ground. The stator assembly 50 comprises for carrying the double-faced laminated corrugated cardboard web 1 tube elements 51 which extend in the conveying direction 2 and are arranged transversely to each other at a distance from each other.

The use of the connecting section arrangement 4 will be described in more detail below. It is also on the FIGS. 9 to 16 and 18 to 21 Referenced.

The double-faced laminated corrugated board web 1 which has been produced in the heating press device is conveyed continuously through the short cross-cutting device 56 and then passes to the web speed detection device 27, which has two measuring rolls 53 arranged adjacent to one another forming a measuring gap 52 includes. The measuring rollers 53 extend perpendicular to the conveying direction 2 and are rotationally driven by the two-sided laminated corrugated board web 1 guided through the measuring gap 52, from which the respective conveying speed of the corrugated board web 1 laminated on both sides in the conveying direction 2 can be determined. Corresponding speed information to the double-sided laminated corrugated cardboard web 1 are supplied to the default unit 18 via the seventh signal line 26.

The double-sided laminated corrugated cardboard web 1 then reaches the knife device 10. It lies there on the tubular elements 51 and is supported by these. The double-sided laminated corrugated board web 1 runs below the cross member 8 and the previously inactive circular knife 11. It is conveyed without interruption.

As Fig. 12 shows, the knife device 10 is initially in its inactive position. The knife device 10 is located in an end region of the guide assembly 9. It is adjacent to a longitudinal edge 7 of the two-sided laminated funded corrugated cardboard web 1. The circular blade 11 is disengaged from the double-faced laminated corrugated cardboard web 1, so that the double-faced laminated corrugated cardboard sheet 1 is not cut by the connection cut assembly 4.

The knife device 10 is then displaced for a job change along the guide assembly 9 on the two-sided laminated funded corrugated cardboard web 1. The knife device 10 is thus displaced in the transverse direction of the double-sided laminated corrugated cardboard web 1. For this purpose, the transverse displacement drive via the sixth signal line 20 is driven accordingly. The circular blade 11 is still out of engagement with the double-sided laminated corrugated cardboard web 1 ( Fig. 13 ).

Subsequently, the circular blade 11 is brought into cutting engagement with the corrugated cardboard web 1 via the height displacement device 15. For this purpose, the height displacement device 15 is controlled accordingly via the third signal line 21, so that the lifting rod 31 extends axially. The circular blade 11 is rotationally driven via the rotary drive 13. The rotary drive 13 is controlled via the first signal line 19 from the default unit 18 ( Fig. 14 ).

The knife apparatus 10 is further displaced along the guide assembly 9a by means of the transverse displacement drive, the circular knife 11 being engaged with the two-sided laminated corrugated fiberboard web 1 to produce a straight join 54 (FIG. Fig. 15 ). The height displacement device 15 remains substantially unactuated during the production of the connecting section 54 in the double-faced laminated corrugated cardboard web 1. The circular blade 11 remains rotationally driven.

After completion of the connecting section 54 in the double-faced laminated corrugated cardboard web 1 (FIG. Fig. 16 ), the height displacement device 15 is actuated again. The lifting rod 31 is retracted axially and the circular blade 11 is lifted from the double-sided laminated corrugated cardboard web 1, so that the connecting section 54 ends in the double-sided laminated corrugated cardboard web 1. The connecting section 54 ends at a distance from the longitudinal edges 7. It penetrates the double-faced laminated corrugated cardboard web 1 over its entire thickness completely.

The transverse displacement drive essentially ensures during the production of the connecting section 54 in the double-faced laminated corrugated cardboard web 1 for a constant constant cutting speed in the transverse direction of the double-sided laminated corrugated cardboard web 1. The displacement speed of the transverse displacement drive is changeable.

As Fig. 15 In addition, the connecting section 54 in the double-faced laminated corrugated board web 1 runs obliquely or at an angle to the conveying direction 2 or the transverse direction of the corrugated board web 1 laminated on both sides.

The connecting section 54 extends obliquely in the double-faced laminated corrugated cardboard web 1. The angle of the connecting section 54 in the double-faced laminated corrugated cardboard web 1 corresponds to a prevailing circular knife angle of the circular blade 11 to the double-faced corrugated cardboard web 1. Conveniently, the displacement speed at which the circular blade 11 in the single-faced laminated corrugated cardboard web 1 for generating the connecting section 54 moves, adapted to the To influence the inclination of the connecting section 54 or to obtain the desired inclination.

Conveniently, the circular blade angle is set so that the least possible waste or waste. It is preferably a default of the circular knife angle.

An adjustment of the circular blade angle by the angle adjustment 17 is conveniently carried out before each job change. An independent adaptation of the circular blade 11 or the angle thereof to the conveying speed of the double-sided laminated corrugated cardboard web 1 is only possible with very small angle errors. For this purpose, the angle adjusting device 17 is used, which is controlled accordingly by the default unit 18 via the fourth signal line 22. The pneumatic cylinder unit 47 drives the stop body 48 accordingly. The counter body 32 cooperates with the stop body 48. The stop body 48 forms a stop for the counter body 32, whereby an angular adjustment or default of the circular blade 11 about the vertical lifting axis 31 a to the double-faced laminated corrugated cardboard web 1 takes place. The brake pads 38 hold the set angle setting of the circular blade 11.

By means of the sensor ring arrangement 44 and the sensor 46, if present, the respective position of the circular blade 11 is detected indirectly. In particular, the distance of the circular blade 11 to the double-sided laminated corrugated cardboard web 1, an immersion depth of the circular blade 11 in the two-sided laminated corrugated cardboard web 1 and / or an existing angle of the circular blade 11 to the double-sided laminated corrugated cardboard web 1 can be detected.

Fig. 9 and 11 show two differently oriented connection cuts 54 in the single-faced laminated corrugated cardboard web 1. Bei Fig. 9 the two-sided laminated corrugated cardboard web 1 is transported in the conveying direction 2 with a comparatively low conveying speed. This low conveying speed, which is detected by the web speed detecting device 27, is between 0.5 m / s and 5 m / s. The connecting section 54 includes, with the first longitudinal section 5, an obtuse first angle W1L, which lies between 95 ° and 125 °. The connecting section 54 includes with the second longitudinal section 6 an obtuse second angle W2L, which lies between 95 ° and 125 ° and corresponds to the first angle W1L. The two angles W1L, W2L form a Z angle. To a perpendicular to the conveying direction 2 extending connecting line 55 of the connecting section 54 includes a transverse angle WQL, which starts from a longitudinal section 5, 6 and is open to the other longitudinal section 6, 5 out. This transverse angle WQS is between 10 ° and 30 °.

at Fig. 11 the two-sided laminated corrugated cardboard web 1 is transported in the conveying direction 2 with a comparatively high conveying speed. The high conveying speed is preferably between 5 m / s and 9 m / s. Between the connection section 54 and the first longitudinal section 5, there is a first angle W S1, which lies between 130 ° and 160 °. Between the connecting section 54 and the second longitudinal section 6 there is a second angle W2S which lies between 130 ° and 160 ° and corresponds to the first angle W1S. The two angles W1S, W2S form an Z angle. To the perpendicular to the conveying direction 2 extending connecting line 55 of the connecting section 54 includes a transverse angle WQS, which starts from a longitudinal section 5, 6 and to the other Longitudinal section 6, 5 is open. This transverse angle WQS is between 45 ° and 80 °.

The angles W1S, W2S of the connecting section 54 are each greater than the angles W1L, W2L of the connecting section 54. The connecting section 54 according to FIG. 1, provided with a comparatively rapidly conveyed one-sided laminated corrugated cardboard web 1 Fig. 11 is inclined to the perpendicular to the conveying direction 2 connecting line 55 is more inclined than that at fast funded unilaterally laminated corrugated cardboard web 1. The stronger the connecting section 55 is inclined relative to the connecting line 55, the greater is a waste or reject.

The double-sided laminated corrugated cardboard web 1 is also continuously conveyed through the job change cutting device 3. The job change cutting device 3 generates a first longitudinal section 5 in the double-faced laminated corrugated cardboard web 1, whereby two double-sided laminated partial corrugated cardboard webs from the corrugated cardboard web 1 arise.

Due to a change of order, a modified blank or longitudinal section of the double-sided laminated corrugated cardboard web 1 is required. For this purpose, the job change cutting device 3 generates the second longitudinal section 6 (FIG. Fig. 1 ), whereby the new partial corrugated board webs differ in their width from the earlier part corrugated board webs. The job change cutting device 3 may include in the conveying direction 2 successively arranged longitudinal cutting stations, which are respectively active successively. Alternatively, a lateral displacement of a longitudinal cutting station of the job change cutting device 3 takes place.

The circular blade 11 and / or the job change cutting device 3 is / are operated so that the connecting section 54 and the first longitudinal section 5 meet at a trailing end portion of the first longitudinal section 5. Conveniently, it is already begun to extend the lifting rod 31 when moving in the transverse direction of the double-sided laminated corrugated cardboard web 1 before it intersects cutting in the two-sided laminated corrugated cardboard web 1. Before reaching the entry point in the two-sided laminated corrugated cardboard web 1, the transverse displacement drive ensures a uniform increase in cutting speed in the transverse direction to the double-sided laminated corrugated cardboard web. 1

Conveniently, it is begun to retract the lifting rod 31 already shortly before reaching its exit point from the double-sided laminated corrugated cardboard web 1. The circular blade 11 and / or the job change cutting device 3 are actuated such that the connecting section 54 and the second longitudinal section 6 meet at a leading end portion of the second longitudinal section 6. There is then a uniform cutting speed reduction in the transverse direction of the double-faced laminated corrugated cardboard web 1. The connecting section 54 extends obliquely to the longitudinal sections 5, 6th

A longitudinal region of the double-sided laminated corrugated cardboard web 1, over which the connecting section 54 extends, forms waste.

Downstream of the job change cutting device 3 are a switch 62 and a cross cutting device 63 with superimposed cross-cutting devices 64 for generating sheets of the Part corrugated cardboard sheets arranged. About the switch 62, the part corrugated board webs to the cross cutting devices 64 are feasible.

Downstream of the cross cutter 63, stack trays 65 for stacking the sheets are arranged.

In the following, alternative cuts will be described. As Fig. 18 shows the connection section 54 again connects between a first longitudinal section 5 and a second longitudinal section 6 ago. There are two first longitudinal cuts 5 in the double-faced laminated corrugated cardboard web 1, so that originally three partial corrugated cardboard webs have been produced. There are a total of three second longitudinal sections 6 in the double-faced laminated corrugated cardboard web 1, so that then four partial corrugated board webs are generated. The number of partial corrugated webs is thus increased. The connecting section 54 ends adjacent to the longitudinal edges 7.

The connection section 54 forms a connection between a first longitudinal section 5, which is arranged adjacent to a first longitudinal edge 7 of the double-sided laminated corrugated cardboard web 1, and a second longitudinal section 6 adjacent to the second longitudinal edge 7 opposite the first longitudinal edge 7 of the double-sided laminated corrugated cardboard web 1 is arranged. The connection cut 54 provides for endless partial corrugated cardboard webs.

at Fig. 19 are a total of three first longitudinal sections 5 present, so that four partial corrugated board webs have been formed. Furthermore, two second longitudinal cuts 6 are present, so that afterwards only three partial corrugated cardboard webs are produced. The number of partial corrugated board webs will be reduced. The connecting section 54 ends adjacent to the longitudinal edges 7.

The connection section 54 extends again from a first longitudinal section 5 adjacent to the first longitudinal edge 7 to a second longitudinal section 6, which is arranged adjacent to the second longitudinal edge 7 opposite the first longitudinal edge 7. There are again endless partial corrugated board webs.

According to Fig. 20 there are three first longitudinal cuts 5 so that four partial corrugated cardboard webs have been produced. It is then changed to a second longitudinal section 6, so that then only two partial corrugated board webs are generated. The connecting section 54 extends from a first longitudinal edge 7 of the double-sided laminated corrugated cardboard web 1 up to a first longitudinal section 5, which has the greatest distance to the first longitudinal edge 7. It runs at a distance from the second longitudinal section 6.

According to Fig. 21 a first longitudinal section 5 is present so that two partial corrugated cardboard webs have been produced. It is then changed to three second longitudinal sections 6, so that then four partial corrugated board webs are generated. The connecting section 54 extends from a first longitudinal edge 7 of the double-sided laminated corrugated cardboard web 1 up to a second longitudinal section 6, which has the largest distance to the first longitudinal edge 7. It runs at a distance from the first longitudinal section 5.

According to a in Fig. 22 . 23 illustrated alternative embodiment, the cross member 8 is adjustable so that it includes with the double-sided laminated corrugated cardboard web 1 in the conveying direction 2 a skew angle, which is up to 45 °. The cross member 8 is thus able to extend obliquely over the two-sided laminated corrugated cardboard web 1. He runs horizontally.

A connecting cut 54 can thus be produced which is barely inclined with respect to the connecting line 55 or extends perpendicular to the conveying direction 2 of the double-sided laminated corrugated cardboard web 1. The waste or waste is so very low or equal to zero.

The cross member 8 is arranged on a machine frame 59 which is supported against the ground or ground. The cross member 8 is pivotable relative to the machine frame 59 about a vertical pivot axis 60. For pivoting the cross member 8, an adjusting motor 61 is used, which is in signal communication with the default unit 18. The pivot axis 60 is conveniently passed through a central elongated region of the double-sided laminated corrugated cardboard web. 1

Claims (18)

Connecting cut arrangement for producing connecting cuts (54) in a material web (1) conveyed in a conveying direction (2), in particular in a corrugated cardboard web, a) with at least one blade device (10) comprising i) a cutting knife (11) for cutting engagement in the material web (1) to produce a connecting cut (54), ii) wherein the cutting blade (11) in its angle (W1L, W2L, W1S, W2S, WQL, WQS) to the material web (1), in particular to the conveying direction (2) or transverse direction, is adjustable. A connecting cut arrangement according to claim 1, characterized by operable blade angle adjusting means (17) for setting a respective blade angle (W1L, W2L, W1S, W2S, WQL, WQS) of the cutting blade (11) to the web (1). A connecting cut arrangement according to claim 2, characterized in that the cutting knife angle adjusting means (17) of the at least one knife device (10) comprises an adjustable stop body assembly (48) and a counter body (32) connected to the cutting knife (11) of the at least one knife device (10) is in fixed angular connection and cooperates with the abutment body assembly (48) to adjust the respective blade angle (W1L, W2L, W1S, W2S, WQL, WQS). A connection cutting arrangement according to claim 2 or 3, characterized by at least one presetting unit (18) for actuating the respective cutting knife angle adjusting device (17). Connection cut arrangement according to one of the preceding claims, characterized in that a cutting knife angle adjustment of the at least one knife device (10) in dependence on a conveying speed of the material web (1). Connecting section arrangement according to one of the preceding claims, characterized in that at a first conveying speed of the material web (1) a first cutting knife angle (W1L, W2L) to the conveying direction (2) and at a second conveying speed of the material web (2) differing from the first conveying speed ( 1) there is a second cutting knife angle (W1S, W2S) to the conveying direction (2) different from the first cutting knife angle (W1L, W2L). Connection cut arrangement according to one of the preceding claims, characterized in that a first cutting knife transverse angle (WQS) to a to the conveying direction (2) of the material web (1) perpendicular connecting line (55) at a relatively high conveying speed of the material web (1) is greater than one corresponding second cutting knife transverse angle (WQL) to the connecting line (55), which is present at a slower conveying speed of the material web (1). Connecting cut arrangement according to one of the preceding claims, characterized in that the at least one knife device (10) has a brake assembly (38) for at least temporarily holding the cutter blade angle (W1L, W2L, W1S, W2S, WQL, WQS). Connection cut arrangement according to one of the preceding claims, characterized in that the cutting knife angle (W1L, W2L, W1S, W2S) in an angular range between 90 ° and 180 °, preferably between 70 ° and 150 °, in particular continuously, is adjustable. A connection cut arrangement according to any one of the preceding claims, characterized in that the at least one blade device (10) comprises a positioning detection arrangement (25) for detecting a respective blade angle (W1L, W2L, W1S, W2S, WQL, WQS). A connection cut arrangement according to one of the preceding claims, characterized in that the at least one default unit (18) has at least one correction unit for correcting a deviation between the detected cutting knife angles and a desired cutting knife angle. Connection cut arrangement according to one of the preceding claims, characterized in that the at least one knife device (10) comprises a rotary drive (13) for rotationally driving the cutting knife (11). Connecting cut arrangement according to one of the preceding claims, characterized by a cutting knife displacement device (15) for displacing the cutting blade (11) between an active cutting position for cutting engagement in the web (1) and an inactive position, preferably an adjustment of the cutting blade angle (W1L, W2L, W1S, W2S, WQL, WQS) in the inactive position of the Schneidemessers (11) takes place. Connecting section arrangement according to one of the preceding claims, characterized by a cutting knife transverse displacement device (14) for displacing the cutting blade (11) in a transverse direction of the material web (1). Connecting cut arrangement according to claim 14, characterized in that the cutting knife transverse displacement device (14) has at least one cross member (8) which extends obliquely with respect to the conveying direction (2) of the material web (1). Connecting cut arrangement according to claim 14 or 15, characterized in that the cutting knife transverse displacement device (14) has at least one cross member (8) which is pivotable about a vertical pivot axis (60). Connecting cut arrangement according to one of the preceding claims, characterized in that a displacement speed of the cutting knife (11) in the transverse direction of the material web (1) is dependent on a conveying speed of the material web (1). Corrugated cardboard plant for producing corrugated cardboard, comprising a) an arrangement for producing a material web (1), in particular a corrugated cardboard web of at least three layers, b) one of the arrangement for producing a material web (1) downstream job change cutting device (3) for generating a first longitudinal section (5) in a first transverse position of the material web (1) corresponding to a first order and a second longitudinal section (6) in a from the first transverse position different second transverse position of the material web (1) corresponding to a second order, and c) one of the job change cutting device (3) upstream connecting cut assembly (4) according to one of the preceding claims for generating a connecting section (54) in the conveying direction (2) conveyed material web (1).

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