EP2845724A1 - Device and method for scoring corrugated and solid cardboard - Google Patents
Device and method for scoring corrugated and solid cardboard Download PDFInfo
- Publication number
- EP2845724A1 EP2845724A1 EP14180663.8A EP14180663A EP2845724A1 EP 2845724 A1 EP2845724 A1 EP 2845724A1 EP 14180663 A EP14180663 A EP 14180663A EP 2845724 A1 EP2845724 A1 EP 2845724A1
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- EP
- European Patent Office
- Prior art keywords
- sonotrode
- solid
- anvil
- board
- corrugated
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/08—Creasing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/08—Creasing
- B31F1/10—Creasing by rotary tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F—MECHANICAL WORKING OR DEFORMATION OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31F1/00—Mechanical deformation without removing material, e.g. in combination with laminating
- B31F1/36—Moistening and heating webs to facilitate mechanical deformation and drying deformed webs
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/25—Surface scoring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/25—Surface scoring
- B31B50/256—Surface scoring using tools mounted on a drum
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/60—Uniting opposed surfaces or edges; Taping
- B31B50/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure, e.g. by welding
- B31B50/644—Making seals parallel to the direction of movement, i.e. longitudinal sealing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/60—Uniting opposed surfaces or edges; Taping
- B31B50/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure, e.g. by welding
- B31B50/645—Making seals transversally to the direction of movement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B31—MAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER; WORKING PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B—MAKING CONTAINERS OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER
- B31B50/00—Making rigid or semi-rigid containers, e.g. boxes or cartons
- B31B50/60—Uniting opposed surfaces or edges; Taping
- B31B50/64—Uniting opposed surfaces or edges; Taping by applying heat or pressure, e.g. by welding
- B31B50/649—Uniting opposed surfaces or edges; Taping by applying heat or pressure, e.g. by welding using tools mounted on a drum
Definitions
- the invention relates to a device for corrugating corrugated board or solid board and a method for corrugating corrugated or solid board according to the independent claims 1 and 10.
- the inventive device and the method according to the invention can be used in the same way in the corrugated board or solid board. Therefore, protection for corrugated cardboard and solid board is claimed. Everything that is revealed in connection with the corrugated board is therefore also valid for the corrugation of solid board. For reasons of linguistic simplification, sometimes only corrugated board is used, although solid board is also meant.
- the term "cardboard" definitely includes both types.
- slots and grooves are made in the board and slits are cut into the board during slitting, while the grooves cause local compression of the board.
- the cardboard is later angled to form the flat cardboard, for example, a box.
- FIG. 1 is a commercial corrugated cardboard with a shaft exemplified as a section.
- the corrugated cardboard 1 comprises an upper layer 3, a shaft 5 and a lower layer 7.
- This corrugated cardboard 1 is very stable in terms of its own weight and is therefore widely used for the manufacture of boxes or other packaging.
- FIG. 2 is a flat blank 9 shown from cardboard from which a box or the like can be folded later.
- the blank 9 has a plurality of slots 11 and score lines 13. In the area of the slots, the cardboard is severed, while the cardboard was only locally compressed in the area of the score line 13, to allow easier folding or folding of the corrugated board.
- This groove is a procedure that has been established for many years.
- the creasing lines 13 are produced by a creasing body and a counterbody.
- this conventional grooves reaches technological limits. Namely, if the quality of Corrugated board is not good, then it can happen when the grooves that the cover layer 3 or the lower layer 7 of the corrugated cardboard tears, which is undesirable.
- the score lines 13 are to extend orthogonally to the upper or lower edge of the corrugated cardboard blank 9, and the individual parts do not bend the various sections 15, 17, 19 and / or 21 of the corrugated cardboard blank 9 along the score line 13 due to a weak score line 13, then the corrugated board does not close flush after folding, but the top edge or the lower edge of the sections 15 and 21 have an offset. This leads to that in the FIG. 2 Left side edge of the portion 15 does not exactly on the connecting portion 23 rests and as a result, the corrugated box is "wrong" glued together. This is also a quality defect that is unacceptable.
- the invention is therefore based on the object to provide an apparatus and a method which allows a more precise, process-reliable grooves of corrugated board.
- a device for corrugated cardboard comprising a sonotrode and an anvil or a second sonotrode.
- the scattering of the values of so-called gap-tailing and fish-tailing which are a reference for the dimensional accuracy of the corrugated cardboard boxes and the angularity or parallelism of the edges of the corrugated cardboard boxes, improve significantly. This achieves a more consistent product quality and minimizes waste.
- the crush pressure of angled paperboard blanks grooved with the device of the present invention is better than crates that have been grooved in a conventional manner.
- a sonotrode within the meaning of the invention is the part of an ultrasonic welding device, with which the oscillations coupled in by an ultrasonic generator are introduced onto the workpiece to be machined.
- the counterpart to the sonotrode is the anvil.
- the workpiece to be machined here corrugated cardboard
- a second sonotrode can be arranged opposite the (first) sonotrode as "counterpart" to the sonotrode. This allows an even more intensive coupling of ultrasound.
- ultrasound and generator and sonotrode may be provided a converter and / or a so-called booster.
- the design of the ultrasonic device can be very similar or even equal to a conventional ultrasonic welding device.
- the sonotrode and / or the anvil are rotatably mounted. Then, the cardboard can be moved through the device according to the invention or alternatively with a stationary cardboard, the device according to the invention can be moved relative to the cardboard.
- the sonotrode and / or the anvil or the second sonotrode are rotationally drivable.
- the sonotrode is fixed and has a straight or curved edge whose shape and dimensions of the desired Correction line corresponds. This variant is particularly advantageous in connection with the flat bed punching of corrugated cardboard blanks.
- a feed device for either the sonotrode, the anvil, the second sonotrode and / or the corrugated board is present. It can also be provided to pass the corrugated cardboard with fixed sonotrode through the gap between sonotrode and anvil or second sonotrode, wherein the sonotrode or the anvil preferably has a wedge-like insertion bevel on an insertion side of the device.
- the distance and / or contact pressure between the sonotrode and the anvil can be adjusted.
- a spraying device is provided with the aid of which the cardboard can be moistened locally in the area of the later creasing line. It is sometimes advantageous if the spray device wets the cardboard on the side on which the sonotrode rests. Then, inter alia, the coupling of the ultrasound is improved in the cardboard. On the other hand, it has also proved to be advantageous in some applications to wet the sonotrode opposite side of the cardboard, because in this way the welding, the connection or the forming of the various layers of corrugated board is improved and there later during bending or folding the cardboard pieces tensile stresses occur. If the cardboard has been moistened in this area, the risk of the cardboard breaking when bent is reduced.
- FIG. 3 schematically and greatly simplified is a section through an embodiment of a device according to the invention comprising a rotatably mounted about a rotation axis 20 sonotrode 25 and an about an axis of rotation 22 rotatably mounted anvil 27 shown.
- the rotatably mounted sonotrode 25 has a circumferential groove 29, which is designed very similar to a conventional scoring tool. Between the groove 29 and the anvil 27 or a second sonotrode, not shown, a corrugated cardboard with the layers 3, 5 and 7 is passed and thereby compressed.
- FIG. 4 the result of the ultrasonic supported corrugation of corrugated board 1 according to the invention with the clearly visible score line 13 is shown.
- the groove 29 of the sonotrode 25 strikes a shaft at its highest point and presses there the corrugated cardboard 1 so far together that the upper layer 3 and the shaft 5 and the lower layer 7 get in direct contact with each other and also connect to each other by the inventive excitation with ultrasound. It has been found in practical experiments that with commercial corrugated cardboard, the inventive design of the scoring, or the score line 13, simple, reliable and durable. It is particularly advantageous that the crease line 13 is very deep without the individual layers of corrugated cardboard 1 are damaged.
- the sonotrode 25 and the anvil 27 are not rotationally symmetrical, but designed as elongated components.
- the groove 29 of this sonotrode 25 has exactly the geometry of the desired score line 13 and is pressed onto the corrugated cardboard 1 from above. This creates the crease line 13 over the entire length at the same time. A feed movement and device is not required.
- FIG. 7 shows an oblique view of a device according to the invention, wherein the sonotrode 25 and the anvil 27 as in FIGS. 5 and 6 not rotationally symmetrical, but are also designed as elongated components.
- the score line 13 is not generated at the same time over its entire length. Rather, the crease line 13 is created by a feed movement of the cardboard 1 with respect to the sonotrode 25 and the anvil 27 or by a feed movement of the sonotrode 25 and the anvil 27 relative to the cardboard 1. Since the sonotrode 25 is not rotationally symmetrical, it sees against the feed direction, which by an arrow 30, a wedge-like insertion bevel 32 of the groove 29, which facilitates insertion of the cardboard 1.
- FIG. 8 shows a side view when looking in the direction of arrow 34 in FIG. 7 ,
- the wedge-like insertion bevel 32 of the groove 29 can be clearly seen there, wherein the cardboard 1 is already partly inserted between the sonotrode 25 and the anvil 27.
- the precision and process reliability of the device according to the invention or of the creasing line 13 produced by the method according to the invention is much better than with conventional mechanical creases of solid board or Corrugated board, thereby allowing the more accurate manufacture of paperboard products with smaller dimensional and angular deviations.
- FIG. 9 different sonotrodes 25 and associated anvils 27 are shown. Sonotrodes 25 and anvils 27 differ in their shape of the grooves.
- FIG. 7 far right, is the embodiment according to the Figures 3 and 5 shown.
- FIG. 10 is very schematically illustrated a further embodiment of a device according to the invention.
- the reference numeral 31 designates an ultrasound generator which supplies a booster 33 and finally the sonotrode 25 with ultrasound via a converter 32.
- the converter 32, the booster 33 and the sonotrode 25 are rotatably mounted and are rotated by an electric motor 38 in rotation.
- the bearing shown only schematically has the reference numeral 39.
- the sonotrode 25 can be delivered in the direction of the anvil 27 or removed.
- 27 load cells 42 are arranged below the anvil.
- the sonotrode 25 and the anvil 27 are rotatably mounted.
- the crease line 13 results from the development of sonotrode 25 and anvil 27.
- the invention can also be realized if sonotrode 25 and anvil 27 are not rotatably mounted, but fixed.
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- Mechanical Engineering (AREA)
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- Machines For Manufacturing Corrugated Board In Mechanical Paper-Making Processes (AREA)
Abstract
Es werden eine Vorrichtung und ein Verfahren zum Rillen von Pappe vorgeschlagen, bei dem die Pappe lokal zusammengedrückt und mit Hilfe von Ultraschall bleibend verformt wird. Dadurch ergeben sich sehr präzise Rilllinien und das Falten entlang der Rilllinien kann mit größerer Präzision erfolgen.There are proposed a device and a method for corrugating cardboard, in which the cardboard is compressed locally and permanently deformed by means of ultrasound. This results in very precise creasing lines and folding along the creasing lines can be done with greater precision.
Description
Die Erfindung betrifft eine Vorrichtung zum Rillen von Wellpappe oder Vollpappe und ein Verfahren zum Rillen von Wellpappe oder Vollpappe gemäß den nebengeordneten Ansprüchen 1 und 10. Die erfindungsgemäße Vorrichtung und das erfindungsgemäße Verfahren lassen sich in gleicher Weise beim Rillen von Wellpappe oder Vollpappe einsetzen. Daher wird Schutz für das Rillen von Wellpappe und Vollpappe beansprucht. Alles was im Zusammenhang mit dem Rillen von Wellpappe offenbart wird, gilt daher auch für das Rillen von Vollpappe. Aus Gründen der sprachlichen Vereinfachung wird nachfolgend manchmal nur von Wellpappe gesprochen, obwohl auch Vollpappe gemeint ist. Der Begriff "Pappe" umfasst auf jeden Fall beide Arten.The invention relates to a device for corrugating corrugated board or solid board and a method for corrugating corrugated or solid board according to the
Zur Herstellung von Erzeugnissen aus Wellpappe oder Vollpappe werden in die Pappe Schlitze und Rillen eingebracht und beim Schlitzen werden schmale Vertiefungen in die Pappe geschnitten, während das Rillen ein lokales Zusammendrücken der Pappe bewirkt. Entlang der Rilllinien, die meistens eine gerade Linie darstellen, wird die Pappe später abgewinkelt, um aus der flächigen Pappe beispielsweise eine Kiste zu formen.To make corrugated board or solid board products, slots and grooves are made in the board and slits are cut into the board during slitting, while the grooves cause local compression of the board. Along the creasing lines, which usually represent a straight line, the cardboard is later angled to form the flat cardboard, for example, a box.
In der
In der
Dieses Rillen ist ein seit vielen Jahren etabliertes Verfahren. Gemäß dem Stand der Technik werden die Rilllinien 13 durch einen Rillkörper und einen Gegenkörper hergestellt. Dabei gelangt dieses herkömmliche Rillen an technologische Grenzen. Wenn nämlich die Qualität der Wellpappe nicht gut ist, dann kann es beim Rillen dazu kommen, dass die Decklage 3 oder die untere Lage 7 der Wellpappe einreißt, was unerwünscht ist.This groove is a procedure that has been established for many years. According to the prior art, the
Außerdem kann es passieren, dass beim Rillen mit einem herkömmlichen Rillkörper das lokale Zusammendrücken der Wellpappe zwar erfolgt, jedoch nach dem Rillen die Wellpappe sich gewissermaßen wieder in ihren Ursprungszustand zurückbewegt, so dass die Rilllinie 13 nicht oder nur schwach ausgeprägt ist. Infolgedessen kann die Rilllinie 13 ihre Aufgabe, nämlich eine definierte Linie vorzugeben, entlang derer der Wellpappezuschnitt 9 gefaltet wird, nicht erfüllen. Einen ähnlichen und unerwünschten Effekt kann man auch beim herkömmlichen Rillen von Vollpappe beobachten. Im Ergebnis führt dies dazu, dass die Abmessungen des Wellpappezuschnitts bzw. der Kiste aus Pappe großen Toleranzen unterliegen und auch die Winkligkeit der abgeklappten Bereiche des Zuschnitts aus Pappe großen Streuungen unterliegt.In addition, it may happen that when grooving with a conventional Rillkörper the local compression of the corrugated cardboard done, but after the corrugated board, in a sense, moved back to its original state, so that the
Wenn beispielsweise die Rilllinien 13 orthogonal zur Ober- bzw. Unterkante des Wellpappezuschnitts 9 verlaufen sollen, und aufgrund einer schwach ausgeprägten Rilllinie 13 die Einzelteile die verschiedenen Abschnitte 15, 17, 19 und/oder 21 des Wellpappezuschnitts 9 nicht entlang der Rilllinie 13 abgewinkelt werden, dann schließt sich der Wellpappezuschnitt nach dem Abkanten nicht bündig, sondern die Oberkante bzw. die Unterkante der Abschnitte 15 und 21 weisen einen Versatz auf. Dies führt dazu, dass die in der
Diese Aufgabe wird erfindungsgemäß gelöst durch eine Vorrichtung zum Rillen von Wellpappe umfassend eine Sonotrode und einen Amboss oder eine zweite Sonotrode.This object is achieved by a device for corrugated cardboard comprising a sonotrode and an anvil or a second sonotrode.
Bei Versuchen hat sich herausgestellt, dass es möglich ist, die Pappe mit Hilfe einer Ultraschallanlage dauerhaft und lokal zu bearbeiten, so dass sich eine bleibende und sehr ausgeprägte Rilllinie ergibt. Aufgrund der mit dem erfindungsgemäßen Rillvorgang erzielbaren günstigen Geometrie der Rilllinie lässt sich der Wellpappezuschnitt sehr präzise und mit großer Wiederholgenauigkeit abwinkeln. Dadurch lassen sich die Maßtoleranzen und Winkeltoleranzen von gefalteten Erzeugnissen aus Pappe deutlich reduzieren.Experiments have shown that it is possible to work the cardboard permanently and locally with the aid of an ultrasonic system, so that a permanent and very pronounced crease line results. Due to the achievable with the creasing invention favorable geometry of the crease line, the corrugated board can be bent very precisely and with great repeatability. As a result, the dimensional tolerances and angle tolerances of folded paperboard products can be significantly reduced.
Insbesondere die Streuung der Werte des sogenannten Gap-Tailings und des Fish-Tailings, welche eine Referenz für die Maßhaltigkeit der Wellpappekisten und der Winkligkeit bzw. Parallelität der Kanten der Wellpappekisten sind, verbessern sich deutlich. Damit wird eine konstantere Produktqualität erzielt und der Ausschuss minimiert.In particular, the scattering of the values of so-called gap-tailing and fish-tailing, which are a reference for the dimensional accuracy of the corrugated cardboard boxes and the angularity or parallelism of the edges of the corrugated cardboard boxes, improve significantly. This achieves a more consistent product quality and minimizes waste.
Auch ist der Stauchdruck von abgewinkelten Pappezuschnitten, die mit der erfindungsgemäßen Vorrichtung gerillt wurden, besser als bei Kisten, die in herkömmlicher Weise gerillt wurden.Also, the crush pressure of angled paperboard blanks grooved with the device of the present invention is better than crates that have been grooved in a conventional manner.
Eine Sonotrode im Sinne der Erfindung ist der Teil eines Ultraschallschweißgeräts, mit dem die von einem Ultraschallgenerator eingekoppelten Schwingungen auf das zu bearbeitende Werkstück eingebracht werden. Das Gegenstück zur Sonotrode ist der Amboss. Zwischen dem Amboss und der Sonotrode wird das zu bearbeitende Werkstück, hier Wellpappe, mit einem vergleichsweise geringen Anpressdruck zusammengedrückt. Alternativ zu dem Amboss kann als "Gegenstück" zu der Sonotrode eine zweite Sonotrode der (ersten) Sonotrode gegenüberliegend angeordnet werden. Dadurch wird eine noch intensivere Einkopplung von Ultraschall ermöglicht. Im Folgenden wird vor allem im Zusammenhang mit der Figurenbeschreibung die Erfindung anhand einer Ausführungsform mit einem Amboss erläutert. Dabei umfasst die Erfindung stets aus Ausführungsformen mit zwei einender gegenüberliegenden Sonotroden.A sonotrode within the meaning of the invention is the part of an ultrasonic welding device, with which the oscillations coupled in by an ultrasonic generator are introduced onto the workpiece to be machined. The counterpart to the sonotrode is the anvil. Between the anvil and the sonotrode, the workpiece to be machined, here corrugated cardboard, is compressed with a comparatively low contact pressure. As an alternative to the anvil, a second sonotrode can be arranged opposite the (first) sonotrode as "counterpart" to the sonotrode. This allows an even more intensive coupling of ultrasound. In the following, the invention will be explained with reference to an embodiment with an anvil, especially in connection with the description of the figures. The invention always comprises embodiments with two einender opposite sonotrodes.
Zwischen Ultraschall und Generator und Sonotrode(n) können ein Konverter und/oder ein sogenannter Booster vorgesehen sein. Die Ausgestaltung der Ultraschalleinrichtung kann sehr ähnlich oder sogar gleich einer herkömmlichen Ultraschallschweißeinrichtung entsprechen.Between ultrasound and generator and sonotrode (s) may be provided a converter and / or a so-called booster. The design of the ultrasonic device can be very similar or even equal to a conventional ultrasonic welding device.
Um gerade Rilllinien rasch und zuverlässig erzeugen zu können, ist es vorteilhaft, wenn die Sonotrode und/oder der Amboss drehbar gelagert sind. Dann kann die Pappe durch die erfindungsgemäße Vorrichtung hindurchbewegt werden oder alternativ bei feststehender Pappe kann die erfindungsgemäße Vorrichtung relativ zur Pappe verschoben werden.In order to produce straight creasing lines quickly and reliably, it is advantageous if the sonotrode and / or the anvil are rotatably mounted. Then, the cardboard can be moved through the device according to the invention or alternatively with a stationary cardboard, the device according to the invention can be moved relative to the cardboard.
In diesem Zusammenhang ist es besonders vorteilhaft, wenn die Sonotrode und/oder der Amboss beziehungsweise die zweite Sonotrode drehantreibbar sind.In this context, it is particularly advantageous if the sonotrode and / or the anvil or the second sonotrode are rotationally drivable.
Alternativ ist es auch möglich, dass die Sonotrode feststehend ist und eine gerade oder gekrümmte Kante aufweist, deren Form und Abmessungen der gewünschten Rilllinie entspricht. Diese Variante ist besonders vorteilhaft im Zusammenhang mit dem Flachbettstanzen von Wellpappezuschnitten.Alternatively, it is also possible that the sonotrode is fixed and has a straight or curved edge whose shape and dimensions of the desired Correction line corresponds. This variant is particularly advantageous in connection with the flat bed punching of corrugated cardboard blanks.
Es hat sich als vorteilhaft erwiesen, wenn eine Vorschubeinrichtung entweder für die Sonotrode, den Amboss, die zweite Sonotrode und/oder die Wellpappe vorhanden ist. Dabei kann auch vorgesehen sein, die Wellpappe bei feststehender Sonotrode durch den Spalt zwischen Sonotrode und Amboss beziehungsweise zweiter Sonotrode hindurchzuführen, wobei die Sonotrode oder der Amboss vorzugsweise eine keilartige Einführschräge auf einer Einführseite der Vorrichtung aufweist.It has proved to be advantageous if a feed device for either the sonotrode, the anvil, the second sonotrode and / or the corrugated board is present. It can also be provided to pass the corrugated cardboard with fixed sonotrode through the gap between sonotrode and anvil or second sonotrode, wherein the sonotrode or the anvil preferably has a wedge-like insertion bevel on an insertion side of the device.
Um die erfindungsgemäße Vorrichtung für die Bearbeitung verschiedener Wellpappen, beispielsweise mit einer Welle, zwei Wellen oder drei Wellen oder Vollpappe optimal einstellen zu können, kann vorgesehen sein, dass Abstand und/oder Anpresskraft zwischen Sonotrode und Amboss einstellbar sind.In order to be able to optimally adjust the device according to the invention for the processing of different corrugated cardboard, for example with one shaft, two shafts or three shafts or solid board, it can be provided that the distance and / or contact pressure between the sonotrode and the anvil can be adjusted.
Es hat sich weiter als vorteilhaft erwiesen, wenn eine Sprühvorrichtung vorhanden ist, mit deren Hilfe die Pappe lokal im Bereich der späteren Rilllinie angefeuchtet werden kann. Dabei ist es manchmal vorteilhaft, wenn die Sprühvorrichtung die Pappe auf der Seite anfeuchtet, an der die Sonotrode aufliegt. Dann wird unter anderem die Einkopplung des Ultraschalls in die Pappe verbessert. Andererseits hat es sich in manchen Anwendungsfällen auch als vorteilhaft erwiesen, die der Sonotrode entgegengesetzte Seite der Pappe anzufeuchten, weil auf diese Weise das Verschweißen, die Verbindung beziehungsweise das Umformen der verschiedenen Lagen der Wellpappe verbessert wird und dort später beim Abwinkeln oder Umklappen der Pappenzuschnitte Zugspannungen auftreten. Wenn im diesen Bereich die Pappe angefeuchtet wurde, dann ist die Gefahr, dass die Pappe beim Abwinkeln reißt, reduziert.It has also proved to be advantageous if a spraying device is provided with the aid of which the cardboard can be moistened locally in the area of the later creasing line. It is sometimes advantageous if the spray device wets the cardboard on the side on which the sonotrode rests. Then, inter alia, the coupling of the ultrasound is improved in the cardboard. On the other hand, it has also proved to be advantageous in some applications to wet the sonotrode opposite side of the cardboard, because in this way the welding, the connection or the forming of the various layers of corrugated board is improved and there later during bending or folding the cardboard pieces tensile stresses occur. If the cardboard has been moistened in this area, the risk of the cardboard breaking when bent is reduced.
Die gleichen Vorteile werden auch mit Hilfe des erfindungsgemäßen Verfahrens gemäß der Ansprüche 10 bis 17 erreicht.The same advantages are also achieved by means of the method according to the invention according to claims 10 to 17.
Weitere Vorteile und vorteilhafte Ausgestaltungen der Erfindung werden nachfolgend anhand der Zeichnung dargestellt und erläutert.Further advantages and advantageous embodiments of the invention are illustrated and explained below with reference to the drawing.
Es zeigen:
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Ein Querschnitt durch eine Wellpappe mit einer Welle,Figur 1 -
Figur 2 eine Draufsicht auf einen beispielhaften Wellpappezuschnitt, -
ein erstes Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung,Figur 3 -
Figur 4 einen Schnitt durch eine mit der erfindungsgemäßen Vorrichtung bearbeitete Wellpappe, -
ein weiteres Anwendungsbeispiel der erfindungsgemäßen Vorrichtung,Figur 5 -
Figur 6 die darausresultierende Rilllinie 13, -
ein weiteres Ausführungsbeispiel einer erfindungsgemäßen Vorrichtung,Figur 7 -
Figur 8 eine Seitenansicht der Vorrichtung gemäßFigur 7 , -
verschiedene Profile von erfindungsgemäßen Sonotroden und Ambossen, undFigur 9 -
Figur 10 eine schematische Darstellung einer erfindungsgemäßen Vorrichtung.
-
FIG. 1 A cross section through a corrugated cardboard with a shaft, -
FIG. 2 a top view of an exemplary corrugated board blank, -
FIG. 3 a first embodiment of a device according to the invention, -
FIG. 4 a section through a processed with the device according to the invention corrugated board, -
FIG. 5 another application example of the device according to the invention, -
FIG. 6 the resultingcrease line 13, -
FIG. 7 a further embodiment of a device according to the invention, -
FIG. 8 a side view of the device according toFIG. 7 . -
FIG. 9 various profiles of sonotrodes and anvils according to the invention, and -
FIG. 10 a schematic representation of a device according to the invention.
In
In der
Bei dem anhand der
Der gleiche Vorgang wird anhand der
Bei dem Ausführungsbeispiel gemäß
Aus der Zusammenschau der Ausführungsbeispiele gemäß der
Die Präzision und Prozesssicherheit der erfindungsgemäßen Vorrichtung bzw. der nach dem erfindungsgemäßen Verfahren hergestellten Rilllinie 13 ist sehr viel besser als bei herkömmlichen mechanischen Rillungen von Vollpappe oder Wellpappe und erlaubt dadurch die präzisere Herstellung von Erzeugnissen aus Pappe mit geringeren Maß- und Winkelabweichungen.The precision and process reliability of the device according to the invention or of the
In der
In der
Mit dem Bezugszeichen 31 ist ein Ultraschallgenerator bezeichnet, der über einen Konverter 32 einen Booster 33 und schließlich die Sonotrode 25 mit Ultraschall versorgt. Der Konverter 32, der Booster 33 und die Sonotrode 25 sind drehbar gelagert und werden von einem Elektromotor 38 in Drehung versetzt. Die nur schematisch dargestellte Lagerung hat das Bezugszeichen 39. Mit den pneumatischen Stellmitteln 40 kann die Sonotrode 25 in Richtung des Ambosses 27 zugestellt bzw. entfernt werden. Um die Anpresskraft der Sonotrode 25 erfassen zu können, sind unterhalb des Ambosses 27 Kraftmessdosen 42 angeordnet.The
Bei diesem Ausführungsbeispiel sind die Sonotrode 25 und der Amboss 27 drehbar gelagert. Die Rilllinie 13 ergibt aus der Abwicklung von Sonotrode 25 und Amboss 27. Die Erfindung lässt sich jedoch auch realisieren, wenn Sonotrode 25 und Amboss 27 nicht drehbar gelagert, sondern feststehend sind.In this embodiment, the
Claims (19)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102013217994 | 2013-09-09 | ||
DE102013218955 | 2013-09-20 | ||
DE102013223854.1A DE102013223854A1 (en) | 2013-09-09 | 2013-11-21 | Apparatus and method for corrugating corrugated board and solid board |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2845724A1 true EP2845724A1 (en) | 2015-03-11 |
EP2845724B1 EP2845724B1 (en) | 2016-06-15 |
Family
ID=51301174
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP14180663.8A Not-in-force EP2845724B1 (en) | 2013-09-09 | 2014-08-12 | Device and method for scoring corrugated and solid cardboard |
Country Status (3)
Country | Link |
---|---|
US (1) | US20150068664A1 (en) |
EP (1) | EP2845724B1 (en) |
DE (1) | DE102013223854A1 (en) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013103887A1 (en) * | 2013-04-17 | 2014-10-23 | Schunk Sonosystems Gmbh | Ultrasonic welding device |
WO2016027498A1 (en) * | 2014-08-18 | 2016-02-25 | ダイペックス株式会社 | Ruled line pressing member, ruled lining template, and ruled lining device |
JP2017028903A (en) * | 2015-07-24 | 2017-02-02 | 株式会社オートネットワーク技術研究所 | Wire casing, wire harness, and rule mark blade |
DE102015011399B4 (en) | 2015-08-31 | 2020-01-23 | G. Kraft Maschinenbau Gmbh | Device and method for scoring, perforating, cutting and scoring flat elements |
DE202015006139U1 (en) | 2015-08-31 | 2015-10-15 | G. Kraft Maschinenbau Gmbh | Device for scoring, perforating, cutting and scoring flat objects |
DE102016100570A1 (en) * | 2016-01-14 | 2017-07-20 | Wilhelm Bahmüller Maschinenbau Präzisionswerkzeuge GmbH | Method and device for folding corrugated board |
DE102016114660A1 (en) * | 2016-08-08 | 2018-02-08 | Wilhelm B a h m ü l l e r Maschinenbau Präzisionswerkzeuge GmbH | Method and device for folding corrugated board |
JP6832133B2 (en) * | 2016-11-08 | 2021-02-24 | 三菱重工機械システム株式会社 | Sheet folding device and method and box making machine |
DE102016123374A1 (en) * | 2016-12-02 | 2018-06-07 | Wilhelm B a h m ü l l e r Maschinenbau Präzisionswerkzeuge GmbH | Apparatus and method for corrugating corrugated board and solid board |
CN107322985B (en) * | 2017-06-16 | 2023-07-14 | 宁夏夏进制箱包装有限公司 | Anti-burst corrugated paper double-line pressing device |
DE102017117078B4 (en) * | 2017-07-28 | 2019-06-13 | Schunk Sonosystems Gmbh | Sonotrode and method for influencing the vibration behavior of a sonotrode |
DE102017126303A1 (en) * | 2017-11-09 | 2019-05-09 | Herrmann Ultraschalltechnik Gmbh & Co. Kg | Feeler gauge and method for parallel alignment of the sealing surface of a sonotrode with the sealing surface of a counter tool |
DE102020123802A1 (en) | 2020-09-11 | 2022-03-17 | Ansgar Biestmann | Process for processing corrugated board |
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- 2014-08-12 EP EP14180663.8A patent/EP2845724B1/en not_active Not-in-force
- 2014-09-04 US US14/477,514 patent/US20150068664A1/en not_active Abandoned
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JPH02277620A (en) * | 1989-04-20 | 1990-11-14 | Mitsubishi Heavy Ind Ltd | Method for processing corrugated cardboard sheet |
DE9215136U1 (en) * | 1992-11-06 | 1993-06-03 | Meier, Peter H., 32049 Herford | Plant for producing molded bodies from a deformable film material or the like. |
DE19743890A1 (en) * | 1996-10-18 | 1998-04-23 | Mann & Hummel Filter | Folding jig for making filter element |
FR2778361A1 (en) * | 1998-05-07 | 1999-11-12 | Groupe Sramag | Process for grooving sheet of cardboard prior to folding |
US20070069428A1 (en) * | 2005-09-13 | 2007-03-29 | Delaware Capital Formation, Inc. | Ultrasonic scoring for a web |
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Also Published As
Publication number | Publication date |
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DE102013223854A1 (en) | 2015-03-12 |
US20150068664A1 (en) | 2015-03-12 |
EP2845724B1 (en) | 2016-06-15 |
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