EP1988042A1 - Device and method for folding a web of material - Google Patents
Device and method for folding a web of material Download PDFInfo
- Publication number
- EP1988042A1 EP1988042A1 EP07008856A EP07008856A EP1988042A1 EP 1988042 A1 EP1988042 A1 EP 1988042A1 EP 07008856 A EP07008856 A EP 07008856A EP 07008856 A EP07008856 A EP 07008856A EP 1988042 A1 EP1988042 A1 EP 1988042A1
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- EP
- European Patent Office
- Prior art keywords
- folding
- material web
- web
- sections
- knives
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H45/00—Folding thin material
- B65H45/02—Folding limp material without application of pressure to define or form crease lines
- B65H45/06—Folding webs
- B65H45/10—Folding webs transversely
- B65H45/101—Folding webs transversely in combination with laying, i.e. forming a zig-zag pile
- B65H45/1015—Folding webs provided with predefined fold lines; Refolding prefolded webs, e.g. fanfolded continuous forms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/11—Dimensional aspect of article or web
- B65H2701/112—Section geometry
- B65H2701/1123—Folded article or web
- B65H2701/11231—Fan-folded material or zig-zag or leporello
Definitions
- the invention relates to a method for folding a material web, wherein sections of the material web are placed by opposing folding knife in a zigzag shape.
- the invention also relates to a device for folding a material web in a zigzag shape with an opposite, folding blade having folding device.
- the material web can be formed, in particular, from a carrier layer of paper, essentially flat packaging pieces laid on the carrier layer and a film cover layer, the cover layer being connected to the carrier layer around the packaging pieces.
- the material web is laid in a zigzag form, wherein usually sections with one packing piece, for example a filter paper for laboratory analytical purposes, should be separable.
- a method and a device with the features described above are known from the document DE 10 2004 025 501 A1 known.
- a material web for example a textile fabric for an air filter
- a material web is supplied continuously and laid by rotational and translational movements of two arranged on opposite sides of the web folding blades in a zigzag shape and moved into a heated folding channel, wherein the folding edges are fixed by heat .
- the disadvantage is that the material web is exposed in the folding large mechanical and thermal loads. The processing of webs with a low strength is not possible.
- the invention has for its object to provide a method for folding a web, in which the web is exposed to a low load.
- a precise folding of a stiff, multi-layer material web is to be made possible.
- the object is achieved in that the material web is intermittently held on a front in the running direction section, several subsequent sections are brought by a first knife set and an opposite second knife set in a zigzag shape, wherein the aligned portions subsequently be pushed together.
- the first and the second set of blades are each formed from a plurality of folding blades, typically arranged at the same distance. Due to the cyclic movements of the folding knife of the first and the second set of knives always exactly reproducible folding of the sections is possible, whereby the load of the material web is limited. Since the sections are guided by the folding blades in the folding, also an exact folding of a stiff material web is made possible.
- a predetermined number of sections is placed in a zigzag shape, wherein the individual sections be aligned successively from the front in the running direction portion of the web.
- the number of knives equals the number of folded sections. Sharp bending and increased stress only occurs when a fold is formed between two sections. The position of the folds is precisely determined by the distance between two adjacent counteracting folding knives in the delivered state.
- the material web can be guided over a web memory, which can be temporarily stored and then temporarily output a certain length of the material web.
- a web of material can be supplied, which is provided at the transition areas between their sections with perforations, weakenings, for example in the form of a groove, or fold lines.
- the areas at which the sections adjoin one another are provided, prior to folding, with fold lines extending transversely to the web longitudinal direction, which are formed in such a way that the material web is prefolded alternately according to the later zigzag shape.
- control of the web run can in the context of the invention, for example, by printed on the web rapport marks or repeat punching take place, these are preferably detected optically, with a light barrier, a digital camera or the like.
- After folding it is also possible to provide further processing, for example cutting to length and packaging of packages of the material web, each of which is formed from a plurality of sections.
- the invention also provides a device for folding a material web in a zigzag form, which is particularly suitable for carrying out the method described above.
- the device has a folding device, wherein according to the invention it is provided that the folding device operates in cycles and has a holding knife for fixing a front section of the material web in the running direction, a first and an opposite second knife set and a slide for the cyclic output of the folded sections.
- the folding blades are typically arranged substantially perpendicular to the running direction of the material web at an equal distance and deliverable for aligning the sections perpendicular to the material web.
- the knife sets each have a plurality of folding blades, but with increasing number of folding blades, the manufacturing costs and the control effort of the folding device increase.
- the sets of knives for example, each have between 3 and 12, preferably between 5 and 8 folding knife.
- the folding knives of the first set of knives can be arranged on a common carrier and the folding knives of the second set of knives can be delivered linearly independently of one another, wherein typically the folding knives of the first set of knives can be delivered jointly via the carrier.
- both the folding knife the first and the second set of knives are individually deliverable.
- the carrier of the first set of knives, the folding knives of the second set of knives the holding knife and / or the slide hydraulically or are pneumatically driven.
- Such a drive allows particularly fast switching and delivery times, whereby a simple control by electronically controllable valves is possible and whereby a particularly simple and space-saving construction of the folding device is made possible.
- the device is designed such that the folding device is a folding station upstream for folding and pre-folding of the material web.
- the upstream folding station on a support plate, extending in the web longitudinal direction web guide and two oppositely acting, arranged transversely to the web guide folding units, wherein the folding units each have a clamping device with at least one jaw and a sword, with the fold areas of the web to form a loop in a gap of the clamping device are insertable, and wherein the jaw is movable to produce fold lines of the material web.
- the gap may for example be formed between the jaw and an associated stop surface of the carrier plate or between two jaws.
- the folding areas of the material web are moved out of the web plane in the folding station to form a loop and provided with a fold line. Since the jaw act laterally on the introduced into the gap of the clamping device loop during a closing movement, a strong strain and consequent damage to the material web can be prevented, whereby rigid, multi-layer webs can be prefolded by the arrangement of the fold line.
- the folding stations can have an ejection element, such as an ejector blade. Upon the opening of the at least one jaw, the ejector blade is then moved into the opening gap to push the folding area out of the clamping device.
- a web memory is preferably arranged in front of and / or behind the folding station.
- servo drives with a residual path optimization can be provided.
- the moving parts of the folding station can be driven hydraulically or pneumatically.
- the described folding station can achieve clock rates for producing the fold line of more than 25 cycles per minute, preferably more than 40 cycles per minute.
- the entire device can also have a cutting blade for cutting material web packages.
- Fig. 1 shows a device for folding a material web 1 in a zigzag shape.
- the apparatus comprises a station 2 for generating lines of weakness, a folding station 3 for prefolding the material web 1, web stores 4 formed as register roll arrangements, roller feeds 5 for advancing the material web 1, a folding device 6 for aligning sections 7 of the material web 1, a separation station 8 Cutting to length packages 9, each having a plurality of sections 7 of the web 1 and a rotary table 10 for temporarily storing the packages 9 before packaging.
- the unfolded material web 1 is in the Fig. 2a and consists of a carrier layer 11, placed on the carrier layer 11 filter papers 12 and a cover layer 13 of a polyethylene film, which is connected to the filter papers 12 around with the carrier layer 11 made of paper.
- the material web 1 is to be folded between the individual filter papers 12, so that sections 7 can be separated, each with a filter paper 12b.
- the carrier layer 11 has a thickness of about 80 microns and the polyethylene film of the cover layer 13 has a thickness of about 50 microns.
- the width of the material web 1 is 80 mm and the length of the sections to be folded 7 75 mm.
- the material web 1 is comparatively stiff in these areas and thus difficult to fold.
- the filter papers 12 may be determined, for example, for laboratory analytical purposes, which is why in the folding process, the carrier layer 11 and the cover layer 13 may not be damaged, otherwise contamination may occur and a sterility of the filter papers 12 is no longer guaranteed.
- To control the web run to be folded sections 7 are each provided with repeat punching 14, which are optically detected.
- Fig. 2b shows a package 9 of several zig-zag folded sections 7 of the web 1, which can be supplied, for example in a dispenser to a user.
- the material web 1 first passes through the station 2 to produce a line of weakness.
- the weakening line can be formed, for example, in the manner of a perforation, but the carrier layer 11 and / or the cover layer 13 are only partially scored or scored and not cut, as is usual in a perforation.
- the material web 1 is then guided over a first roll feed 5 and a first web store 4 for pre-folding in a folding station 3.
- the folding station 3 has a carrier plate 16, a running in the web longitudinal direction web guide 17 and two oppositely acting, arranged transversely to the web guide 17 folding units 18.
- the staggered in the web longitudinal direction folding units 18 each comprise a clamping device 19 with a jaw 20 and a sword 21, with a folding portion 22 of the web 1 to form a loop in a formed between the jaw 20 and a stop surface 24 of the support plate 16 gap 25 inserted are, wherein the clamping jaw 20 is then supplied to generate fold lines of the material web 1 by a closing action of the clamping device 19 in the direction of the loop formed.
- the propulsion of the material web 1 and the mutual generation of fold lines in the fold areas 22 takes place cyclically with a clock rate of up to 40 cycles per minute or more. Since the fold regions 22 are moved out of the web plane to produce the fold lines to form a loop, a length compensation is required which is made possible by the upstream web store 4.
- the swords 21 and the column 25 are arranged perpendicular to the running direction of the material web 1. Since in the folding, the clamping jaw 20 of the clamping device 19 acts laterally on the inserted from the blade 21 web 1, only relatively low loads on the material web 1, so that the carrier layer 11 and the cover layer 13 are not severed in the formation of the fold line. In order to avoid a large tensile load during the further transport of the material web 1, an ejector blade 26 is provided as an ejection element 26, which pushes out the fold region 22 of the material web 1 from the opening gap 25 after opening the clamping device.
- the mutually prefolded material web 1 is guided via a further roller feed 5 as a drive unit and a further web memory 4 to a cyclically operating folding device 6.
- the folding device 6 has a holding knife 27 for fixing a front section 7 of the material web in the running direction, a first and an opposite second knife set 28a, 28b and a slide 29 for the cyclic output the folded portions 7 on.
- the folding blades 30a, 30b are arranged perpendicular to the direction of movement of the material web 1 at an equal distance.
- the folding blades 30a of the first blade set 28a are fastened to a common carrier 31, wherein the folding blades 30b of the second blade set 28b are independently linearly deliverable.
- the carrier 31 of the first blade set 28a, the folding blade 30b of the second blade set 28b, the holding blade 27 and the slide 29 are hydraulically or pneumatically driven, the associated drive units in Fig. 5 can be seen.
- the folding of the material web 1 is preferably carried out by successively aligning the sections 7 in the folding device 6 starting from the front section 7 of the material web in the running direction.
- Fig. 4a shows the already aligned by linear feed movements of the folding blades 31a, 31 b sections 7 before they are pushed together after a retraction of the folding blades 31a, 31b of the slider 29 and output after a retraction of the holding knife 27.
- the second web memory 4 can temporarily store a corresponding length of the material web 1 and deliver it at short notice.
- the roller feeds 5 can be equipped with an optical device for detecting the repeat punching 14 of the material web 1, wherein the roller feeds 5 are preferably designed as servo drives with a residual path optimization.
- Fig. 4b shows an alternative embodiment of the folding device 6, in which both the folding blade 30a of the first blade set 28a and the folding blade 30b of the second blade set 28b are individually deliverable.
- the alignment of the sections 7 of the material web 1 takes place starting from the front section 7 in the direction of travel in that alternately individual folding blades 30a, 30b of the first and second knife set 28a, 28b are delivered.
- the fact that all folding blades 28a, 28b are deliverable individually, the load on the material web 1 is reduced to a minimum, so that even very sensitive, constructed of different layers webs of material 1 can be processed.
- Twelve sections 7 of the material web 1 are aligned in one stroke of the folding device 6, wherein the first blade set 28a and the second blade set 28b each have six folding blades 30a, 30b.
- the material web 1 can be folded precisely at the stiff regions between the individual filter papers 12, without the carrier layer 11 or the cover layer 13 being damaged.
- packets 9 with 108 sections 7 can be generated in a time of about 90 seconds.
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- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Abstract
Description
Die Erfindung betrifft ein Verfahren zum Falten einer Materialbahn, wobei Abschnitte der Materialbahn durch gegenüberliegende Faltmesser in eine Zickzackform gelegt werden. Gegenstand der Erfindung ist auch eine Vorrichtung zum Falten einer Materialbahn in eine Zickzackform mit einer gegenüberliegenden, Faltmesser aufweisenden Falteinrichtung. Die Materialbahn kann insbesondere aus einer Trägerschicht aus Papier, auf die Trägerschicht aufgelegten, im Wesentlichen ebenen Verpackungsstücken und einer Foliendeckschicht gebildet sein, wobei die Deckschicht um die Verpackungsstücke herum mit der Trägerschicht verbunden ist. Um eine Vielzahl der zwischen der Trägerschicht und der Deckschicht angeordneten Verpackungsstücke für einen Benutzer Platz sparend bereitzuhalten, wird die Materialbahn in Zickzackform gelegt, wobei üblicherweise Abschnitte mit jeweils einem Verpackungsstück, beispielsweise einem Filterpapier für laboranalytische Zwecke, abtrennbar sein soll. Bei dem Falten ist eine Beschädigung der Schichten der Materialbahn zu vermeiden, da ansonsten ein Schutz des Verpackungsstückes vor Verschmutzung und Verunreinigungen nicht mehr gewährleistet ist.The invention relates to a method for folding a material web, wherein sections of the material web are placed by opposing folding knife in a zigzag shape. The invention also relates to a device for folding a material web in a zigzag shape with an opposite, folding blade having folding device. The material web can be formed, in particular, from a carrier layer of paper, essentially flat packaging pieces laid on the carrier layer and a film cover layer, the cover layer being connected to the carrier layer around the packaging pieces. In order to make available a large number of packaging pieces arranged between the carrier layer and the covering layer for a user, the material web is laid in a zigzag form, wherein usually sections with one packing piece, for example a filter paper for laboratory analytical purposes, should be separable. When folding a damage to the layers of the web is to be avoided, since otherwise a protection of the packaging piece from contamination and contamination is no longer guaranteed.
Ein Verfahren und eine Vorrichtung mit den eingangs beschriebenen Merkmalen sind aus der Druckschrift
Der Erfindung liegt die Aufgabe zugrunde ein Verfahren zum Falten einer Materialbahn anzugeben, bei dem die Materialbahn einer geringen Belastung ausgesetzt ist. Insbesondere soll ein genaues Falten einer steifen, mehrschichtigen Materialbahn ermöglicht werden.The invention has for its object to provide a method for folding a web, in which the web is exposed to a low load. In particular, a precise folding of a stiff, multi-layer material web is to be made possible.
Ausgehend von einem Verfahren mit den eingangs beschriebenen Merkmalen wird die Aufgabe erfindungsgemäß dadurch gelöst, dass die Materialbahn taktweise an einem in Laufrichtung vorderen Abschnitt festgehalten wird, mehrere nachfolgende Abschnitte durch einen ersten Messersatz und einen gegenüberliegenden zweiten Messersatz in Zickzackform gebracht werden, wobei die ausgerichteten Abschnitte nachfolgend zusammengeschoben werden. Der erste und der zweite Messersatz sind jeweils aus mehreren, typischerweise in einem gleichen Abstand angeordneten Faltmessern gebildet. Durch die taktweisen Bewegungen der Faltmesser des ersten und des zweiten Messersatzes ist eine stets genau reproduzierbare Faltung der Abschnitte möglich, wobei auch die Belastung der Materialbahn begrenzt ist. Da die Abschnitte bei dem Falten von den Faltmessern geführt sind, wird auch eine exakte Faltung einer steifen Materialbahn ermöglicht.Based on a method with the features described above, the object is achieved in that the material web is intermittently held on a front in the running direction section, several subsequent sections are brought by a first knife set and an opposite second knife set in a zigzag shape, wherein the aligned portions subsequently be pushed together. The first and the second set of blades are each formed from a plurality of folding blades, typically arranged at the same distance. Due to the cyclic movements of the folding knife of the first and the second set of knives always exactly reproducible folding of the sections is possible, whereby the load of the material web is limited. Since the sections are guided by the folding blades in the folding, also an exact folding of a stiff material web is made possible.
Im Rahmen einer bevorzugten Ausgestaltung des erfindungsgemäßen Verfahrens ist vorgesehen, dass in einem Takt eine vorgegebene Anzahl an Abschnitten in Zickzackform gelegt wird, wobei die einzelnen Abschnitte ausgehend von dem in Laufrichtung vorderen Abschnitt der Materialbahn nacheinander ausgerichtet werden. Bei dem Aufstellen des an seinem einen Ende festgehaltenen vorderen Abschnittes und dem Ausrichten der nachfolgenden Abschnitte werden entsprechend der Verkürzung der Materialbahn weitere Abschnitte in den Bereich zwischen dem ersten und dem zweiten Messersatz gezogen, bis sich schließlich zum Ende des Taktes die vorgegebene Zickzackform bildet, wobei dann die Anzahl der Messer der Anzahl der gefalteten Abschnitte entspricht. Ein scharfes Abwinkeln und eine erhöhte Beanspruchung tritt jeweils nur dann auf, wenn eine Falte zwischen zwei Abschnitten gebildet wird. Die Position der Falten ist durch den Abstand zwischen zwei benachbarten, entgegenwirkenden Faltmessern im zugestellten Zustand genau festgelegt.In the context of a preferred embodiment of the method according to the invention, it is provided that in a cycle a predetermined number of sections is placed in a zigzag shape, wherein the individual sections be aligned successively from the front in the running direction portion of the web. When setting up the fixed at one end of the front portion and aligning the subsequent sections further sections are drawn in the area between the first and the second set of blades according to the shortening of the web until finally forms the predetermined zigzag shape at the end of the clock then the number of knives equals the number of folded sections. Sharp bending and increased stress only occurs when a fold is formed between two sections. The position of the folds is precisely determined by the distance between two adjacent counteracting folding knives in the delivered state.
Um bei dem taktweisen Falten eine Anpassung an weitere, vorgelagerte Verfahrenschritte oder an ein kontinuierliches Zuführen der Materialbahn zu ermöglichen, kann die Materialbahn über einen Bahnspeicher geführt werden, der zunächst eine gewisse Länge der Materialbahn zwischengespeichert und dann kurzfristig ausgegeben werden kann.In order to allow the clockwise folding an adaptation to further, upstream process steps or to a continuous feeding of the material web, the material web can be guided over a web memory, which can be temporarily stored and then temporarily output a certain length of the material web.
Zur Erleichterung des Faltens kann eine Materialbahn zugeführt werden, die an den Übergangsbereichen zwischen ihren Abschnitten mit Perforationen, Schwächungen, beispielsweise in Form einer Nut, oder Falzlinien versehen ist. Im Rahmen einer bevorzugten Ausgestaltung der Erfindung werden die Bereiche, an denen die Abschnitte aneinander anschließen, vor dem Falten mit quer zur Bahnlängsrichtung verlaufenden Falzlinien versehen, die derart gebildet werden, dass die Materialbahn wechselweise entsprechend der späteren Zickzackform vorgefaltet wird.For ease of folding, a web of material can be supplied, which is provided at the transition areas between their sections with perforations, weakenings, for example in the form of a groove, or fold lines. In the context of a preferred embodiment of the invention, the areas at which the sections adjoin one another are provided, prior to folding, with fold lines extending transversely to the web longitudinal direction, which are formed in such a way that the material web is prefolded alternately according to the later zigzag shape.
Die Steuerung des Bahnlaufes kann im Rahmen der Erfindung beispielsweise durch auf die Materialbahn aufgedruckte Rapportmarken oder Rapportstanzungen erfolgen, wobei diese bevorzugt optisch, mit einer Lichtschranke, einer Digitalkamera oder dergleichen erfasst werden. Nach dem Falten kann auch eine weitere Verarbeitung, beispielsweise ein Ablängen und Verpacken von Paketen der Materialbahn vorgesehen sein, die jeweils aus einer Vielzahl von Abschnitten gebildet sind.The control of the web run can in the context of the invention, for example, by printed on the web rapport marks or repeat punching take place, these are preferably detected optically, with a light barrier, a digital camera or the like. After folding, it is also possible to provide further processing, for example cutting to length and packaging of packages of the material web, each of which is formed from a plurality of sections.
Gegenstand der Erfindung ist auch eine Vorrichtung zum Falten einer Materialbahn in Zickzackform, die im besonderen Maße für die Durchführung des zuvor beschriebenen Verfahrens geeignet ist. Die Vorrichtung weist eine Falteinrichtung auf, wobei erfindungsgemäß vorgesehen ist, dass die Falteinrichtung taktweise arbeitet und ein Haltemesser zur Fixierung eines in Laufrichtung vorderen Abschnittes der Materialbahn, einen ersten und einen gegenüberliegenden zweiten Messersatz und einen Schieber zur taktweisen Ausgabe der gefalteten Abschnitte aufweist. Die Faltmesser sind typischerweise im Wesentlichen senkrecht zur Laufrichtung der Materialbahn in einem gleichen Abstand angeordnet und zum Ausrichten der Abschnitte senkrecht zur Materialbahn zustellbar. Um eine schnelle und effiziente Bearbeitung der Materialbahn zu ermöglichen, weisen die Messersätze jeweils eine Vielzahl von Faltmessern auf, wobei jedoch mit zunehmender Anzahl der Faltmesser die Fertigungskosten und der Steueraufwand der Falteinrichtung zunehmen. Je nach Anwendung können die Messersätze beispielsweise jeweils zwischen 3 und 12, vorzugsweise zwischen 5 und 8 Faltmesser aufweisen.The invention also provides a device for folding a material web in a zigzag form, which is particularly suitable for carrying out the method described above. The device has a folding device, wherein according to the invention it is provided that the folding device operates in cycles and has a holding knife for fixing a front section of the material web in the running direction, a first and an opposite second knife set and a slide for the cyclic output of the folded sections. The folding blades are typically arranged substantially perpendicular to the running direction of the material web at an equal distance and deliverable for aligning the sections perpendicular to the material web. In order to enable a fast and efficient processing of the material web, the knife sets each have a plurality of folding blades, but with increasing number of folding blades, the manufacturing costs and the control effort of the folding device increase. Depending on the application, the sets of knives, for example, each have between 3 and 12, preferably between 5 and 8 folding knife.
Im Rahmen der Erfindung können die Faltmesser des ersten Messersatzes an einen gemeinsamen Träger angeordnet und die Faltmesser des zweiten Messersatzes unabhängig voneinander linear zustellbar, wobei typischerweise die Faltmesser des ersten Messersatzes über den Träger gemeinsam zustellbar sind. Bei einer sehr geringen Belastbarkeit der Materialbahn und um eine besonders hohe Genauigkeit zu erreichen, kann im Rahmen einer besonders bevorzugten Ausgestaltung auch vorgesehen sein, dass sowohl die Faltmesser des ersten als auch des zweiten Messersatzes einzeln zustellbar sind. Bei weniger strengen Anforderungen kann beispielsweise ausreichend sein, wenn die Faltmesser des ersten Messersatzes auf dem gemeinsamen Träger und nur Gruppen von beispielsweise zwei Faltmessern des zweiten Messersatzes voneinander unabhängig zustellbar sind.In the context of the invention, the folding knives of the first set of knives can be arranged on a common carrier and the folding knives of the second set of knives can be delivered linearly independently of one another, wherein typically the folding knives of the first set of knives can be delivered jointly via the carrier. With a very low load capacity of the material web and to achieve a particularly high accuracy, can also be provided in a particularly preferred embodiment, that both the folding knife the first and the second set of knives are individually deliverable. For less stringent requirements, for example, it may be sufficient if the folding blades of the first blade set on the common carrier and only groups of, for example, two folding blades of the second blade set are independently deliverable.
Insbesondere um hohe Taktraten der Falteinrichtung von typischerweise mehr als 3 Takte pro Minute, vorzugsweise mehr als 5 Takte pro Minute zu erreichen, kann vorgesehen sein, dass der Träger des ersten Messersatzes, die Faltmesser des zweiten Messersatzes das Haltemesser und/oder der Schieber hydraulisch oder pneumatisch angetrieben sind. Ein solcher Antrieb erlaubt besonders schnelle Schalt- und Zustellzeiten, wobei eine einfache Steuerung durch elektronisch ansteuerbare Ventile möglich ist und wobei auch ein besonders einfacher und Platz sparender Aufbau der Falteinrichtung ermöglicht wird.In particular in order to achieve high cycle rates of the folding device of typically more than 3 cycles per minute, preferably more than 5 cycles per minute, it can be provided that the carrier of the first set of knives, the folding knives of the second set of knives the holding knife and / or the slide hydraulically or are pneumatically driven. Such a drive allows particularly fast switching and delivery times, whereby a simple control by electronically controllable valves is possible and whereby a particularly simple and space-saving construction of the folding device is made possible.
Im Rahmen einer bevorzugten Ausgestaltung der Erfindung ist die Vorrichtung derart ausgebildet, dass der Falteinrichtung eine Falzstation zum Falzen und Vorfalten der Materialbahn vorgelagert ist. Besonders bevorzugt weist die vorgelagerte Falzstation eine Trägerplatte, eine in Bahnlängsrichtung verlaufende Bahnführung und zwei entgegengesetzt wirkende, quer zur Bahnführung angeordnete Falzeinheiten auf, wobei die Falzeinheiten jeweils eine Klemmvorrichtung mit zumindest einer Klemmbacke und ein Schwert, mit dem Falzbereiche der Materialbahn unter Bildung einer Schlaufe in einen Spalt der Klemmvorrichtung einführbar sind, aufweist und wobei die Klemmbacke zur Erzeugung von Falzlinien der Materialbahn bewegbar ist. Der Spalt kann beispielsweise zwischen der Klemmbacke und einer zugeordneten Anschlagfläche der Trägerplatte oder zwischen zwei Klemmbacken gebildet sein.In a preferred embodiment of the invention, the device is designed such that the folding device is a folding station upstream for folding and pre-folding of the material web. Particularly preferably, the upstream folding station on a support plate, extending in the web longitudinal direction web guide and two oppositely acting, arranged transversely to the web guide folding units, wherein the folding units each have a clamping device with at least one jaw and a sword, with the fold areas of the web to form a loop in a gap of the clamping device are insertable, and wherein the jaw is movable to produce fold lines of the material web. The gap may for example be formed between the jaw and an associated stop surface of the carrier plate or between two jaws.
Im Rahmen einer solchen Ausgestaltung werden in der Falzstation die Falzbereiche der Materialbahn unter Bildung einer Schlaufe tatkweise aus der Bahnebene herausbewegt und mit einer Falzlinie versehen. Da die Klemmbacke bei einer Schließbewegung seitlich auf die in den Spalt der Klemmvorrichtung eingeführte Schlaufe wirken, können eine starke Dehnung und eine dadurch bedingte Beschädigung der Materialbahn verhindert werden, wobei auch steife, mehrschichtige Materialbahnen durch die Anordnung der Falzlinie vorgefaltet werden können. Um die Falzbereiche nach dem Falzen leicht aus den Falzstationen zu entfernen und eine übermäßige Zugspannung zu vermeiden, können die Falzstationen ein Auswurfelement, beispielsweise ein Auswurfschwert, aufweisen. Bei dem Öffnen der zumindest einen Klemmbacke wird das Auswurfschwert dann in den sich öffnenden Spalt bewegt, um den Falzbereich aus der Klemmvorrichtung herauszuschieben.In the context of such an embodiment, the folding areas of the material web are moved out of the web plane in the folding station to form a loop and provided with a fold line. Since the jaw act laterally on the introduced into the gap of the clamping device loop during a closing movement, a strong strain and consequent damage to the material web can be prevented, whereby rigid, multi-layer webs can be prefolded by the arrangement of the fold line. To easily remove the fold areas after folding from the folding stations and to avoid excessive tension, the folding stations can have an ejection element, such as an ejector blade. Upon the opening of the at least one jaw, the ejector blade is then moved into the opening gap to push the folding area out of the clamping device.
Um bei dem Falzen einen Zug und eine zeitweise Längenänderung ausgleichen zu können, ist vorzugsweise vor und/oder hinter der Falzstation ein Bahnspeicher angeordnet. Für den Vortrieb der Materialbahn können beispielsweise Servoantriebe mit einer Restwegoptimierung vorgesehen sein. Wie auch bei der Falteinrichtung können die beweglichen Teile der Falzstation hydraulisch oder pneumatisch angetrieben sein. Je nach Art der Materialbahn können mit der beschriebenen Falzstation Taktraten zur Erzeugung der Falzlinie von mehr als 25 Takte pro Minute, vorzugsweise mehr als 40 Takte pro Minute erreicht werden.In order to be able to compensate for a train and a temporary change in length during folding, a web memory is preferably arranged in front of and / or behind the folding station. For the propulsion of the material web, for example servo drives with a residual path optimization can be provided. As with the folding device, the moving parts of the folding station can be driven hydraulically or pneumatically. Depending on the type of material web, the described folding station can achieve clock rates for producing the fold line of more than 25 cycles per minute, preferably more than 40 cycles per minute.
Die gesamte Vorrichtung kann zusätzlich zu der Falteinrichtung und der optional vorgesehenen Falzstation auch ein Schneidmesser zum Ablängen von Materialbahnpaketen aufweisen.In addition to the folding device and the optionally provided folding station, the entire device can also have a cutting blade for cutting material web packages.
Die Erfindung wird im Folgenden anhand einer lediglich ein Ausführungsbeispiel darstellenden Zeichnung erläutert. Es zeigen schematisch:
- Fig.1
- eine Vorrichtung zum Falten einer Materialbahn in einer Übersichtsdarstellung,
- Fig. 2a
- die zugeführte Materialbahn im ungefalteten Zustand,
- Fig. 2b
- ein Paket mit in Zickzackform aufeinander gefalteten Abschnitten der Materialbahn,
- Fig. 3
- eine Falzstation zum Vorfalten der Materialbahn,
- Fig. 4a
- eine Falteinrichtung zum Ausrichten der Abschnitte der Materialbahn in einer perspektivischen Seitenansicht,
- Fig. 4b
- eine vereinfachte Seitenansicht einer alternativen Ausgestaltung der Falteinrichtung zum Ausrichten der Abschnitte der Materialbahn,
- Fig. 5
- die Anordnung gemäß
Fig. 4a in einer perspektivischen Ansicht von unten.
- Fig.1
- a device for folding a material web in an overview,
- Fig. 2a
- the supplied material web in the unfolded state,
- Fig. 2b
- a package with zig-zag folded sections of the material web,
- Fig. 3
- a folding station for pre-folding the material web,
- Fig. 4a
- a folding device for aligning the sections of the material web in a perspective side view,
- Fig. 4b
- a simplified side view of an alternative embodiment of the folding device for aligning the sections of the material web,
- Fig. 5
- the arrangement according to
Fig. 4a in a perspective view from below.
Die ungefaltete Materialbahn 1 ist in der
Die Materialbahn 1 durchläuft zunächst die Station 2 zur Erzeugung einer Schwächungslinie. Die Schwächungslinie kann beispielsweise nach Art einer Perforation gebildet sein, wobei jedoch die Trägerschicht 11 und/oder die Deckschicht 13 lediglich abschnittsweise angeritzt oder eingekerbt und nicht, wie bei einer Perforation üblich, durchschnitten werden. Die Materialbahn 1 wird dann über einen ersten Rollenvorschub 5 und einen ersten Bahnspeicher 4 zum Vorfalten in einer Falzstation 3 geführt. Die Falzstation 3 weist eine Trägerplatte 16, eine in Bahnlängsrichtung verlaufende Bahnführung 17 und zwei entgegengesetzt wirkende, quer zur Bahnführung 17 angeordnete Falzeinheiten 18 auf. Die in Bahnlängsrichtung versetzt angeordneten Falzeinheiten 18 umfassen jeweils eine Klemmvorrichtung 19 mit einer Klemmbacke 20 und ein Schwert 21, mit dem ein Falzbereich 22 der Materialbahn 1 unter Bildung einer Schlaufe in einen zwischen der Klemmbacke 20 und einer Anschlagfläche 24 der Trägerplatte 16 gebildeten Spalt 25 einführbar sind, wobei die Klemmbacke 20 dann zur Erzeugung von Faltlinien der Materialbahn 1 durch eine Schließwirkung der Klemmvorrichtung 19 in Richtung der gebildeten Schlaufe, zugestellt wird. Der Vortrieb der Materialbahn 1 und das wechselseitige Erzeugen von Falzlinien in den Falzbereichen 22 erfolgt taktweise mit einer Taktrate von bis zu 40 Takten pro Minute oder mehr. Da die Falzbereiche 22 zur Erzeugung der Falzlinien unter Bildung einer Schlaufe aus der Bahnebene herausbewegt werden, ist ein Längenausgleich erforderlich, der durch den vorgelagerten Bahnspeicher 4 ermöglicht wird. Die Schwerter 21 und die Spalte 25 sind senkrecht zu der Laufrichtung der Materialbahn 1 angeordnet. Da bei dem Falzen die Klemmbacke 20 der Klemmvorrichtung 19 seitlich auf die von dem Schwert 21 eingeschobene Materialbahn 1 wirkt, treten nur vergleichsweise geringe Belastungen der Materialbahn 1 auf, so dass die Trägerschicht 11 und die Deckschicht 13 bei der Bildung der Falzlinie nicht durchtrennt werden. Um auch bei dem weiteren Transport der Materialbahn 1 eine große Zugbelastung zu vermeiden, ist ein Auswurfschwert als Auswurfelement 26 vorgesehen, welches nach dem Öffnen der Klemmvorrichtung den Falzbereich 22 der Materialbahn 1 aus dem sich öffnenden Spalt 25 herausschiebt.The material web 1 first passes through the
Die wechselseitig vorgefaltete Materialbahn 1 wird über einen weiteren Rollenvorschub 5 als Antriebseinheit und einen weiteren Bahnspeicher 4 zu einer taktweise arbeitetenden Falteinrichtung 6 geführt. Die Falteinrichtung 6 weist ein Haltemesser 27 zur Fixierung eines in Laufrichtung vorderen Abschnittes 7 der Materialbahn, einen ersten und einen gegenüberliegenden zweiten Messersatz 28a, 28b und einen Schieber 29 zur taktweisen Ausgabe der gefalteten Abschnitte 7 auf. Die Faltmesser 30a, 30b sind senkrecht zu der Bewegungsrichtung der Materialbahn 1 in einem gleichen Abstand angeordnet. Die Faltmesser 30a des ersten Messersatzes 28a sind an einem gemeinsamen Träger 31 befestigt, wobei die Faltmesser 30b des zweiten Messersatzes 28b unabhängig voneinander linear zustellbar sind. Der Träger 31 des ersten Messersatzes 28a, die Faltmesser 30b des zweiten Messersatzes 28b, das Haltemesser 27 und der Schieber 29 sind hydraulisch oder pneumatisch angetrieben, wobei die zugeordneten Antriebseinheiten in
Das Falten der Materialbahn 1 erfolgt vorzugsweise dadurch, dass die Abschnitte 7 in der Falteinrichtung 6 ausgehend von dem in Laufrichtung vorderen Abschnitt 7 der Materialbahn nacheinander ausgerichtet werden.
In einem Takt der Falteinrichtung 6 werden jeweils zwölf Abschnitte 7 der Materialbahn 1 ausgerichtet, wobei der erste Messersatz 28a und der zweite Messersatz 28b jeweils sechs Faltmesser 30a, 30b aufweisen.Twelve
Erfindungsgemäß kann die Materialbahn 1 an den steifen Bereichen zwischen den einzelnen Filterpapieren 12 präzise gefaltet werden, ohne dass die Trägerschicht 11 oder die Deckschicht 13 beschädigt werden. Mit der beschriebenen Vorrichtung können beispielsweise Pakete 9 mit 108 Abschnitten 7 in einer Zeit von etwa 90 Sekunden erzeugt werden.According to the invention, the material web 1 can be folded precisely at the stiff regions between the
Claims (16)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT07008856T ATE464262T1 (en) | 2007-05-02 | 2007-05-02 | METHOD AND DEVICE FOR FOLDING A WEB OF MATERIAL |
EP07008856A EP1988042B1 (en) | 2007-05-02 | 2007-05-02 | Device and method for folding a web of material |
DE502007003468T DE502007003468D1 (en) | 2007-05-02 | 2007-05-02 | Method and device for folding a material web |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP07008856A EP1988042B1 (en) | 2007-05-02 | 2007-05-02 | Device and method for folding a web of material |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1988042A1 true EP1988042A1 (en) | 2008-11-05 |
EP1988042B1 EP1988042B1 (en) | 2010-04-14 |
Family
ID=38520566
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07008856A Not-in-force EP1988042B1 (en) | 2007-05-02 | 2007-05-02 | Device and method for folding a web of material |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP1988042B1 (en) |
AT (1) | ATE464262T1 (en) |
DE (1) | DE502007003468D1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013128459A1 (en) * | 2012-03-01 | 2013-09-06 | 2P2D Solutions Ltd. | Folded blister chain, folding machine and folding method |
CN110202832A (en) * | 2019-06-13 | 2019-09-06 | 安徽世品佳工业产品设计有限公司 | A kind of clamping Tui Zhe mechanism |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4218962A (en) * | 1978-07-03 | 1980-08-26 | Johns-Manville Corporation | Apparatus for forming thermal insulation blocks |
DE8534260U1 (en) * | 1985-12-05 | 1986-02-13 | Polytex AG, Glattbrugg | Device for zigzag folding |
FR2614883A1 (en) * | 1987-05-04 | 1988-11-10 | Duribreux Jean Baptiste | METHOD, DEVICE AND PLANT FOR FOLDING A RECTANGULAR TEXTILE PART |
DE9412210U1 (en) * | 1994-07-28 | 1994-12-01 | Schäfer, Hermann, 35116 Hatzfeld | Folding device |
US20050257655A1 (en) * | 2004-05-21 | 2005-11-24 | Arno Heinen | Method for making standing folds and knife folding machine with work transfer device |
-
2007
- 2007-05-02 EP EP07008856A patent/EP1988042B1/en not_active Not-in-force
- 2007-05-02 DE DE502007003468T patent/DE502007003468D1/en active Active
- 2007-05-02 AT AT07008856T patent/ATE464262T1/en active
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4218962A (en) * | 1978-07-03 | 1980-08-26 | Johns-Manville Corporation | Apparatus for forming thermal insulation blocks |
DE8534260U1 (en) * | 1985-12-05 | 1986-02-13 | Polytex AG, Glattbrugg | Device for zigzag folding |
FR2614883A1 (en) * | 1987-05-04 | 1988-11-10 | Duribreux Jean Baptiste | METHOD, DEVICE AND PLANT FOR FOLDING A RECTANGULAR TEXTILE PART |
DE9412210U1 (en) * | 1994-07-28 | 1994-12-01 | Schäfer, Hermann, 35116 Hatzfeld | Folding device |
US20050257655A1 (en) * | 2004-05-21 | 2005-11-24 | Arno Heinen | Method for making standing folds and knife folding machine with work transfer device |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2013128459A1 (en) * | 2012-03-01 | 2013-09-06 | 2P2D Solutions Ltd. | Folded blister chain, folding machine and folding method |
CN110202832A (en) * | 2019-06-13 | 2019-09-06 | 安徽世品佳工业产品设计有限公司 | A kind of clamping Tui Zhe mechanism |
Also Published As
Publication number | Publication date |
---|---|
EP1988042B1 (en) | 2010-04-14 |
DE502007003468D1 (en) | 2010-05-27 |
ATE464262T1 (en) | 2010-04-15 |
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