EP0347729A1 - Method and device for the production of an endless honeycomb belt - Google Patents

Method and device for the production of an endless honeycomb belt Download PDF

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Publication number
EP0347729A1
EP0347729A1 EP19890110739 EP89110739A EP0347729A1 EP 0347729 A1 EP0347729 A1 EP 0347729A1 EP 19890110739 EP19890110739 EP 19890110739 EP 89110739 A EP89110739 A EP 89110739A EP 0347729 A1 EP0347729 A1 EP 0347729A1
Authority
EP
European Patent Office
Prior art keywords
strips
film
band
film web
honeycomb
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.)
Granted
Application number
EP19890110739
Other languages
German (de)
French (fr)
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EP0347729B1 (en
Inventor
Hans Schmidlin
Christoph Rohrer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
SCHMIDLIN ANDREA
SCHMIDLIN GERTRUD
SCHMIDLIN HANS-PETER
Original Assignee
SCHMIDLIN Andrea
SCHMIDLIN Gertrud
SCHMIDLIN Hans-Peter
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by SCHMIDLIN Andrea, SCHMIDLIN Gertrud, SCHMIDLIN Hans-Peter filed Critical SCHMIDLIN Andrea
Priority to AT89110739T priority Critical patent/ATE75662T1/en
Publication of EP0347729A1 publication Critical patent/EP0347729A1/en
Application granted granted Critical
Publication of EP0347729B1 publication Critical patent/EP0347729B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B31MAKING 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
    • B31DMAKING ARTICLES OF PAPER, CARDBOARD OR MATERIAL WORKED IN A MANNER ANALOGOUS TO PAPER, NOT PROVIDED FOR IN SUBCLASSES B31B OR B31C
    • B31D3/00Making articles of cellular structure, e.g. insulating board
    • B31D3/02Making articles of cellular structure, e.g. insulating board honeycombed structures, i.e. the cells having an essentially hexagonal section
    • B31D3/0223Making honeycomb cores, e.g. by piling a plurality of web sections or sheets
    • B31D3/0246Plane webs having essentially longitudinal adhesive strips being folded transversely into stacks or being cut transversely into sections which are piled, e.g. zigzag-folding the webs preceding the cutting
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10Methods of surface bonding and/or assembly therefor
    • Y10T156/1002Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina
    • Y10T156/1003Methods of surface bonding and/or assembly therefor with permanent bending or reshaping or surface deformation of self sustaining lamina by separating laminae between spaced secured areas [e.g., honeycomb expanding]
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/10Methods of surface bonding and/or assembly therefor
    • Y10T156/1052Methods of surface bonding and/or assembly therefor with cutting, punching, tearing or severing
    • Y10T156/1062Prior to assembly
    • Y10T156/1075Prior to assembly of plural laminae from single stock and assembling to each other or to additional lamina
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/12Surface bonding means and/or assembly means with cutting, punching, piercing, severing or tearing
    • Y10T156/13Severing followed by associating with part from same source
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T156/00Adhesive bonding and miscellaneous chemical manufacture
    • Y10T156/17Surface bonding means and/or assemblymeans with work feeding or handling means
    • Y10T156/1702For plural parts or plural areas of single part
    • Y10T156/1712Indefinite or running length work
    • Y10T156/1722Means applying fluent adhesive or adhesive activator material between layers
    • Y10T156/1724At spaced areas
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10TTECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00Stock material or miscellaneous articles
    • Y10T428/24Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24149Honeycomb-like

Definitions

  • the invention relates to a process for the production of an endless honeycomb strip consisting of strips lying flat next to one another and partially glued to one another, which can be pulled apart to form a honeycomb by stretching in the longitudinal direction of the strip, film strips being pulled continuously from a plurality of coils, on one side parallel to one another in the longitudinal direction of the strip Glue strips, which have the same spacing from one another, and are then placed one above the other, the glue strips of the one film web being offset by half a strip spacing from those of the film web above or below, whereupon the multilayer film band is then used to fix its individual layers to one another Pressure and / or temperature treated and finally transversely divided into strips of the desired width, which are stacked one above the other and pressed under pressure to form the endless honeycomb belt.
  • the invention further relates to a device for performing the aforementioned method.
  • the method mentioned at the outset can be found in Canadian Patent 1,078,296.
  • the processing is carried out by four coils, the strips being separated from the front end of the multilayer film strip.
  • the invention has for its object to develop an inexpensive manufacturing process that can be carried out on compact systems with high capacity.
  • said gluing is preferably carried out with hot melt, which is sprayed in strips onto each film web, and that film web sections of the same length are separated from the front end of the film band in the conveying direction after said layers have been fixed, with regard to their Length correspond to a multiple of the strip width and are stacked on top of one another to form intermediate stacks, which form a buffer store and are individually pressed into packets which are successively divided into the opposite strips, which are pressed with the supply of heat to said honeycomb strip.
  • the glue strips are thus preferably formed from hot melt, which is applied from the start in strips, but not in bead-like beads.
  • the purpose of all cooling devices is to cool the materials heated for gluing back to a maximum temperature that is permissible for handling before further processing.
  • the cooling devices can be integrated into the conveyor devices. Contamination of the deflection or pressure rollers by the hot melt is thus avoided.
  • the interchangeable magazine station serves to achieve a high capacity, which enables the formation of intermediate stacks and thus a high performance of the second cross cutter, even though the processing is only carried out by two coils.
  • the accumulation device formed by the press channel works continuously or in the step cycle of the second cross cutter; the strips pent up under pressure are thus conveyed continuously or intermittently through the press channel.
  • FIGS. 1 and 2 The system according to FIGS. 1 and 2 is used to produce an endless honeycomb belt and comprises the following stations from left to right:
  • a unwinding station 1 comprises two coils 2, from each of which a film web 3 is continuously drawn off, which can be metal foils.
  • a film web 3 is continuously drawn off, which can be metal foils.
  • deflection devices 4 for example made of rollers or the like. can exist.
  • the unwinding station 1 is followed by a coating station 6.
  • this comprises a hotmelt applicator unit 7 which has at least one slot nozzle 8 with an interchangeable slot mask 9 (see FIG. 4) for the production of glue strips 10 on the top Film web side (see Figure 5).
  • glue strips 10 run in the longitudinal direction of the film web 3; the strips of glue 10 lie parallel to one another and are each at the same distance from one another, the strips of glue fen 10 of the lower film web 3 are arranged offset by half a strip spacing relative to the glue strips 10 of the upper film web. If the width of each glue strip 10 is denoted by a, then the clear distance between two glue strips 10 is preferably three a.
  • the strip geometry determines the size of the honeycomb core diameter.
  • Hotmelt is a solvent-free, environmentally friendly, heat-reactive adhesive that is applied in strips, but not in bead-like beads.
  • the width of the film web can e.g. two slot nozzles are provided, the slot opening through sheets, foils or the like. is coverable, in which the openings are punched in the distances that are desired for the glue strips 10.
  • the coating station 6 is followed by a cooling station 11 for the glued film webs 3.
  • this cooling station 11 is formed by cooling rollers 12, over which the film webs 3 are guided, and which bring about the transport and the tension of the film webs, which is required for a clean application of adhesive.
  • a laminating station 13 Downstream of the cooling station 11 is a laminating station 13, which is formed by a pair of rollers 14 through which the two film webs 3, which are now superimposed, are guided simultaneously be, the deflection rollers on the inlet side serve as edge control of the film webs.
  • This laminating station serves to bring the two film webs 3 together and to fix them to one another, with the two film webs only being glued to the extent that a relative displacement between the film webs is prevented.
  • a first cross cutter 15 is arranged behind the laminating station 13, which can be designed as a rotary cross cutter, so that a continuous removal of the film webs 3 from the coils 2 can be maintained.
  • This first cross cutter 15 separates from the respective front end of the now double-layer film web sections of film of the same length, which correspond in terms of their length to a multiple of the width of the strips 16 to be produced later, the length being selectable and, for example, a maximum of 1300 mm.
  • These double-layer film strip sections are stacked in an interchangeable magazine station 17, which forms a buffer store and has a drawer slide provided with two storage levels 18, 19.
  • this stack 20 is automatically fed to a heating calender 21, while simultaneously double-layer film strip sections are continuously stacked to form a stack 20 in the second drawer level.
  • the heating calender 21 the stacks 20 fed from the respective storage level 18 or 19 to the exchangeable magazine station 17 are successively heated to the required temperature and pressed or baked under the required pressure to form a package 22.
  • the package 22 then arrives at a downstream outlet table, which serves as a connecting and cooling section 23 from the heating calender 21 to a second cross cutter 24.
  • the latter has a cutting knife 25 which is controlled in a vertical plane and with which a knife bar 26 arranged above the package 22 also coexists partial stamps or hold-down strips 29 and a counter knife 27 located below this package 22 are assigned.
  • the delivered packages 22 are trimmed if necessary and then cut into strips 16, the width of which, according to the final honeycomb height, can be freely adjusted. Any first and remaining cuts are automatically ejected and collected.
  • a press channel 28 Arranged beneath the second cross cutter 24 is a press channel 28 forming a stowage device, which at its entry has a partial stamp 29 which presses the last cut strip 16 into the press channel and engages in its free spaces, e.g. Retainer 30, which can be controlled electro-pneumatically or electromagnetically, has strips 16 for the strips 16 already in the press channel 28.
  • the press channel 28 is acted upon by a heating device 31 for gluing the strips 16 together.
  • the endless honeycomb belt 32 thus formed then passes through a cooling device 33.
  • the feed in the press channel 28 can take place continuously or in steps.
  • the preferably arcuate press channel 28 exerts such a high back pressure on the pre-conveyed strand that the strips 16 stacked one above the other are firmly bonded to one another under heat and pressure.

Landscapes

  • Laminated Bodies (AREA)
  • Making Paper Articles (AREA)
  • Catalysts (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
  • Filtering Materials (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

The invention relates to a process and an apparatus for the production of an endless honeycomb band, consisting of flatly adjacent, partially bonded strips, which band can be drawn out by stretching in band longitudinal direction to form a honeycomb. Film sheets are continuously drawn off from a plurality of coils, provided on one side with equally spaced glue strips running mutually parallel in the sheet longitudinal direction and subsequently being laid one on top of another. The gluing is performed with a hotmelt adhesive, which is sprayed onto each film sheet in the form of a plurality of strips. The glue strips of the one film sheet are arranged offset with respect to the above-lying or below-lying film sheet by half a strip spacing in each case. The multi-ply film band is then treated for the intersetting of its individual plies by pressure and/or temperature and is finally divided transversely into sections of the desired width, which are stacked one on top of the other and pressed to form the endless honeycomb band. Film sheet sections of the same length are cut off, after the setting of its plies, from the end of the film band lying at the front in conveying direction, and are placed in layers one on top of another into intermediate stacks, which are pressed individually into packs. The packs are successively divided up into band sections, which are pressed to form the honeycomb band under the application of heat and subsequently cooled.

Description

Die Erfindung betrifft ein Verfahren zur Herstellung eines endlo­sen, aus flach nebeneinanderstehenden, partiell miteinander ver­klebten Streifen bestehenden Wabenbandes, das durch Recken in Bandlängsrichtung zu einer Wabe auseinandergezogen werden kann, wobei von mehreren Coils Folienbahnen jeweils kontinuierlich ab­gezogen, auf einer Seite mit in Bahnlängsrichtung parallel zuein­ander verlaufenden, gleichen Abstand voneinander aufweisenden Leimstreifen versehen und anschließend übereinander gelegt wer­den, wobei die Leimstreifen der einen Folienbahn gegenüber denen der darüber bzw. darunter liegenden Folienbahn um jeweils einen halben Streifenabstand versetzt angeordnet sind, worauf dann das mehrlagige Folienband zur gegenseitigen Fixierung seiner einzel­nen Lagen durch Druck und/oder Temperatur behandelt und schließ­lich quer in Streifen gewünschter Breite aufgeteilt wird, die übereinander gestapelt und unter Druck zu dem endlosen Wabenband verpreßt werden.The invention relates to a process for the production of an endless honeycomb strip consisting of strips lying flat next to one another and partially glued to one another, which can be pulled apart to form a honeycomb by stretching in the longitudinal direction of the strip, film strips being pulled continuously from a plurality of coils, on one side parallel to one another in the longitudinal direction of the strip Glue strips, which have the same spacing from one another, and are then placed one above the other, the glue strips of the one film web being offset by half a strip spacing from those of the film web above or below, whereupon the multilayer film band is then used to fix its individual layers to one another Pressure and / or temperature treated and finally transversely divided into strips of the desired width, which are stacked one above the other and pressed under pressure to form the endless honeycomb belt.

Die Erfindung betrifft ferner eine Vorrichtung zur Durchführung des vorgenannten Verfahrens.The invention further relates to a device for performing the aforementioned method.

Das eingangs genannte Verfahren läßt sich der kanadischen Patent­schrift 1 078 296 entnehmen. Die Verarbeitung erfolgt hier von vier Coils, wobei die Streifen jeweils von dem vorderen Ende des mehrlagigen Folienbandes abgetrennt werden.The method mentioned at the outset can be found in Canadian Patent 1,078,296. The processing is carried out by four coils, the strips being separated from the front end of the multilayer film strip.

Ein vergleichbares Verfahren offenbart auch die US-Patentschrift 3,257,253.A comparable method is also disclosed in US Pat. No. 3,257,253.

Der Erfindung liegt die Aufgabe zugrunde, ein preiswertes Her­stellungsverfahren zu entwickeln, das sich auf kompakten Anlagen hoher Kapazität durchführen läßt.The invention has for its object to develop an inexpensive manufacturing process that can be carried out on compact systems with high capacity.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die ge­nannte Beleimung vorzugsweise mit Hotmelt erfolgt, der streifen­förmig auf jede Folienbahn aufgedüst wird, und daß von dem in Förderrichtung vorn liegenden Ende des Folienbandes nach der ge­nannten Fixierung seiner Lagen Folienbahnabschnitte gleicher Län­ge abgetrennt werden, die hinsichtlich ihrer Länge einem Mehrfa­chen der Streifenbreite entsprechen und zu Zwischenstapeln über­einander geschichtet werden, die einen Pufferspeicher bilden und einzeln zu Paketen verpreßt werden, die nacheinander in die ge­genannten Streifen aufgeteilt werden, die unter Wärmezufuhr zu dem genannten Wabenband verpreßt werden.This object is achieved in that said gluing is preferably carried out with hot melt, which is sprayed in strips onto each film web, and that film web sections of the same length are separated from the front end of the film band in the conveying direction after said layers have been fixed, with regard to their Length correspond to a multiple of the strip width and are stacked on top of one another to form intermediate stacks, which form a buffer store and are individually pressed into packets which are successively divided into the opposite strips, which are pressed with the supply of heat to said honeycomb strip.

Hinsichtlich der Vorrichtung wird die der Erfindung zugrundelie­gende Aufgabe durch folgende Merkmale gelöst:

  • a) Vorschubeinrichtungen für den kontinuierlichen Vorschub der beiden Folienbahnen;
  • b) für jede Folienbahn ist ein Hotmelt-Auftragswerk vorgesehen, das zumindest eine Schlitzdüse mit auswechselbarer Schlitz­maske zur Erzeugung der Leimstreifen aufweist;
  • c) eine Kaschierstation zur gegenseitigen Fixierung der ein­zelnen Lagen des Folienbandes;
  • d) ein erster Querschneider zum Abtrennen der Folienbahnab­schnitte;
  • e) eine Wechselmagazinierstation als Pufferspeicher für die aus den Folienbahnabschnitten gebildeten Stapel;
  • f) ein zweiter Querschneider zum Abtrennen der Streifen;
  • g) ein unterhalb vom zweiten Querschneider angeordneter, eine Stauvorrichtung bildender Preßkanal, der an seinem Eintritt einen den jeweils zuletzt abgetrennten Streifen in den Preß­kanal hineindrückenden partiellen Stempel sowie in dessen Freiräume eingreifende, aussteuerbare Rückhalter für die bereits im Preßkanal befindlichen Streifen aufweist;
  • h) eine den Preßkanal beaufschlagende Heizeinrichtung zum Ver­kleben der Streifen miteinander;
  • i) eine nachgeschaltete Kühleinrichtung für das endlose Waben­band;
With regard to the device, the object on which the invention is based is achieved by the following features:
  • a) feed devices for the continuous feed of the two film webs;
  • b) a hotmelt applicator is provided for each film web, which has at least one slot nozzle with exchangeable slot mask for producing the glue strips;
  • c) a laminating station for mutually fixing the individual layers of the film strip;
  • d) a first cross cutter for severing the film web sections;
  • e) an interchangeable magazine station as a buffer store for the stacks formed from the film web sections;
  • f) a second cross cutter for severing the strips;
  • g) a press channel arranged below the second cross cutter and forming a stowage device, which at its entry has a partial stamp which presses the last cut strip into the press channel and, in its free spaces, controllable retainers for the strips already in the press channel;
  • h) a heating device acting on the press channel for gluing the strips together;
  • i) a downstream cooling device for the endless honeycomb belt;

Erfindungsgemäß werden die Leimstreifen somit vorzugsweise aus Hotmelt gebildet, der von vornherein in Streifen, nicht aber in wulstartigen Raupen aufgetragen wird. Sämtliche Kühlvorrichtungen bezwecken, die zum Verkleben aufgeheizten Materialien vor der Weiterverarbeitung wieder auf eine vom Handling her zulässige maximale Temperatur abzukühlen. Dabei können die Kühlvorrichtun­gen in die Fördereinrichtungen integriert werden. Eine Ver­schmutzung der Umlenk- bzw. Druckwalzen durch den Hotmelt wird somit vermieden.According to the invention, the glue strips are thus preferably formed from hot melt, which is applied from the start in strips, but not in bead-like beads. The purpose of all cooling devices is to cool the materials heated for gluing back to a maximum temperature that is permissible for handling before further processing. The cooling devices can be integrated into the conveyor devices. Contamination of the deflection or pressure rollers by the hot melt is thus avoided.

Zur Erzielung einer kompakten Anlage geringer Störanfälligkeit erscheint die Verarbeitung von nur zwei Coils vorteilhaft. Zur Erzielung einer hohen Kapazität dient die Wechselmagazinier­station, die die Bildung von Zwischenstapeln und damit eine hohe Leistung des zweiten Querschneiders ermöglicht, obwohl die Verarbeitung nur von zwei Coils erfolgt.In order to achieve a compact system with low susceptibility to faults, the processing of only two coils appears to be advantageous. The interchangeable magazine station serves to achieve a high capacity, which enables the formation of intermediate stacks and thus a high performance of the second cross cutter, even though the processing is only carried out by two coils.

Die durch den Preßkanal gebildete Stauvorrichtung funktioniert kontinuierlich oder aber im Schritt-Takt des zweiten Querschnei­ders; die unter Druck aufgestauten Streifen werden also konti­nuierlich oder taktweise durch den Preßkanal gefördert.The accumulation device formed by the press channel works continuously or in the step cycle of the second cross cutter; the strips pent up under pressure are thus conveyed continuously or intermittently through the press channel.

Weitere Merkmale der Erfindung sind Gegenstand der Unteransprüche und werden in Verbindung mit weiteren Vorteilen der Erfindung an­hand eines Ausführungsbeispieles näher erläutert.Further features of the invention are the subject of the dependent claims and are explained in connection with further advantages of the invention using an exemplary embodiment.

In der Zeichnung ist eine als Beispiel dienende Ausführungsform schematisch dargestellt. Es zeigen:

  • Figur 1 den linken Teil einer Anlage;
  • Figur 2 den rechten Teil der Anlage gemäß Figur 1;
  • Figur 3 in vergrößertem Maßstab und perspektivischer Dar­stellung im Ausschnitt einen Querschneider und
  • Figur 4 ein Hotmelt-Auftragswerk und
  • Figur 5 in Draufsicht die Leimstreifen-Bilder zweier Folienbahnen.
An exemplary embodiment is shown schematically in the drawing. Show it:
  • Figure 1 shows the left part of a system;
  • Figure 2 shows the right part of the system according to Figure 1;
  • Figure 3 in an enlarged scale and perspective view in the detail a cross cutter and
  • Figure 4 is a hot melt application and
  • Figure 5 is a top view of the glue strip images of two film webs.

Die Anlage gemäß den Figuren 1 und 2 dient zur Herstellung eines endlosen Wabenbandes und umfaßt von links nach rechts gesehen folgende Stationen:The system according to FIGS. 1 and 2 is used to produce an endless honeycomb belt and comprises the following stations from left to right:

Eine Abwicklungsstation 1 umfaßt zwei Coils 2, von denen konti­nuierlich je eine Folienbahn 3 abgezogen wird, bei der es sich um Metallfolien handeln kann. Für die Führung der beiden Folienbah­nen 3 sorgen u.a. Umlenkeinrichtungen 4, die z.B. aus Walzen o.dergl. bestehen können. In Förderrichtung 5 der Folienbahnen 3 gesehen folgt der Abwicklungsstation 1 eine Beschichtungssta­tion 6. Diese umfaßt für jede Folienbahn 3 ein Hotmelt Auftrags­werk 7, das zumindest eine Schlitzdüse 8 mit auswechselbarer Schlitzmaske 9 (siehe Figur 4) zur Erzeugung von Leimstreifen 10 jeweils auf der oben liegenden Folienbahnseite (siehe Figur 5). Diese Leimstreifen 10 verlaufen in Längsrichtung der Folienbahn 3; die Leimstreifen 10 liegen parallel zueinander und weisen von­einander einen jeweils gleichen Abstand auf, wobei die Leimstrei­ fen 10 der unteren Folienbahn 3 um jeweils einen halben Streifen­abstand versetzt angeordnet sind gegenüber den Leimstreifen 10 der oberen Folienbahn. Wird die Breite jedes Leimstreifens 10 mit a bezeichnet, so beträgt der lichte Abstand zwischen zwei Leim­streifen 10 vorzugsweise drei a. Dabei bestimmt die Streifengeo­metrie die Größe des Wabenkerndurchmessers.A unwinding station 1 comprises two coils 2, from each of which a film web 3 is continuously drawn off, which can be metal foils. For the guidance of the two film webs 3 provide, inter alia, deflection devices 4, for example made of rollers or the like. can exist. Viewed in the direction of conveyance 5 of the film webs 3, the unwinding station 1 is followed by a coating station 6. For each film web 3, this comprises a hotmelt applicator unit 7 which has at least one slot nozzle 8 with an interchangeable slot mask 9 (see FIG. 4) for the production of glue strips 10 on the top Film web side (see Figure 5). These glue strips 10 run in the longitudinal direction of the film web 3; the strips of glue 10 lie parallel to one another and are each at the same distance from one another, the strips of glue fen 10 of the lower film web 3 are arranged offset by half a strip spacing relative to the glue strips 10 of the upper film web. If the width of each glue strip 10 is denoted by a, then the clear distance between two glue strips 10 is preferably three a. The strip geometry determines the size of the honeycomb core diameter.

Bei Hotmelt handelt es sich um einen lösungsmittelfreien, umwelt­freundlichen, mit Wärme reaktivierbaren Klebstoff, der in Strei­fen, nicht aber in wulstartigen Raupen aufgetragen wird. Über die Breite der Folienbahn können z.B. zwei Schlitzdüsen vorgesehen sein, deren Schlitzöffnung durch Bleche, Folien o.dergl. abdeck­bar ist, in die die Öffnungen in den Abständen eingestanzt sind, die für die Leimstreifen 10 gewünscht sind. Zur Veränderung der herzustellenden Wabenstruktur brauchen somit nur diese Matrizen ausgetauscht zu werden. Dies bedingt einen geringeren Zeitauf­wand und niedrige Materialkosten im Vergleich zu Walzenauftrags­systemen.Hotmelt is a solvent-free, environmentally friendly, heat-reactive adhesive that is applied in strips, but not in bead-like beads. The width of the film web can e.g. two slot nozzles are provided, the slot opening through sheets, foils or the like. is coverable, in which the openings are punched in the distances that are desired for the glue strips 10. To change the honeycomb structure to be produced, only these matrices need to be replaced. This means less time and material costs compared to roller application systems.

Zur Erzeugung des vorstehend genannten Versatzes der Leimstreifen 10 zwischen den beiden Folienbahnen 3 reicht es aus, die eine Schlitzdüse 8 um den halben Leimstreifenabstand in axialer Rich­tung gegenüber der anderen Schlitzdüse zu versetzen, oder aber die Schlitzmasken entsprechend auszubilden.To generate the above-mentioned offset of the glue strips 10 between the two film webs 3, it is sufficient to offset the one slot nozzle 8 by half the distance between the glue strips in the axial direction with respect to the other slot nozzle, or to design the slot masks accordingly.

Der Beschichtungsstation 6 ist eine Kühlstation 11 für die be­leimten Folienbahnen 3 nachgeschaltet. In dem dargestellten Aus­führungsbeispiel ist diese Kühlstation 11 durch Kühlwalzen 12 ge­bildet, über die die Folienbahnen 3 geführt werden, und die den Transport der Folienbahnen sowie deren Spannung bewirken, die für einen sauberen Kleberauftrag erforderlich ist.The coating station 6 is followed by a cooling station 11 for the glued film webs 3. In the exemplary embodiment shown, this cooling station 11 is formed by cooling rollers 12, over which the film webs 3 are guided, and which bring about the transport and the tension of the film webs, which is required for a clean application of adhesive.

Der Kühlstation 11 nachgeschaltet ist eine Kaschierstation 13, die durch ein Walzenpaar 14 gebildet ist, durch das die beiden nunmehr aufeinanderliegenden Folienbahnen 3 gleichzeitig geführt werden, wobei die Umlenkwalzen auf der Einlaufseite als Kanten­steuerung der Folienbahnen dienen. Diese Kaschierstation dient zum Zusammenführen der beiden Folienbahnen 3 und zu deren gegen­seitiger Fixierung, wobei die Verklebung beider Folienbahnen nur insoweit erfolgen soll, als eine Relativverschiebung zwischen den Folienbahnen verhindert wird.Downstream of the cooling station 11 is a laminating station 13, which is formed by a pair of rollers 14 through which the two film webs 3, which are now superimposed, are guided simultaneously be, the deflection rollers on the inlet side serve as edge control of the film webs. This laminating station serves to bring the two film webs 3 together and to fix them to one another, with the two film webs only being glued to the extent that a relative displacement between the film webs is prevented.

Hinter der Kaschierstation 13 ist ein erster Querschneider 15 an­geordnet, der als Rotationsquerschneider ausgebildet sein kann, so daß ein kontinuierlicher Abzug der Folienbahnen 3 von den Coils 2 beibehalten werden kann. Dieser erste Querschneider 15 trennt von dem jeweils vorn liegenden Ende von der nunmehr dop­pellagigen Folienbahn Folienbandabschnitte gleicher Länge ab, die hinsichtlich ihrer Länge einem Mehrfachen der Breite der später herzustellenden Streifen 16 entsprechen, wobei die Länge wählbar ist und beispielsweise maximal 1300 mm betragen kann. Diese doppellagigen Folienbandabschnitte werden in einer Wechselmagazinierstation 17 gestapelt, die einen Pufferspeicher bildet und eine mit zwei Ablageebenen 18,19 versehene Schubladen­rutsche aufweist. Bei Erreichen der gewählten Anzahl von z.B. zehn doppellagigen Folienbandabschnitten wird dieser Stapel 20 automatisch einem Heizkalander 21 zugeführt, während gleichzeitig in der zweiten Schubladenebene kontinuierlich doppellagige Folienbahnabschnitte zu einem Stapel 20 abgestapelt werden. In dem Heizkalander 21 werden nacheinander die aus der jeweiligen Ablageebene 18 bzw. 19 der Wechselmagazinierstation 17 zugeführ­ten Stapel 20 auf die erforderliche Temperatur aufgeheizt und unter dem erforderlichen Druck zu einem Paket 22 gepreßt bzw. verbacken.A first cross cutter 15 is arranged behind the laminating station 13, which can be designed as a rotary cross cutter, so that a continuous removal of the film webs 3 from the coils 2 can be maintained. This first cross cutter 15 separates from the respective front end of the now double-layer film web sections of film of the same length, which correspond in terms of their length to a multiple of the width of the strips 16 to be produced later, the length being selectable and, for example, a maximum of 1300 mm. These double-layer film strip sections are stacked in an interchangeable magazine station 17, which forms a buffer store and has a drawer slide provided with two storage levels 18, 19. When the selected number of e.g. ten double-layer film strip sections, this stack 20 is automatically fed to a heating calender 21, while simultaneously double-layer film strip sections are continuously stacked to form a stack 20 in the second drawer level. In the heating calender 21, the stacks 20 fed from the respective storage level 18 or 19 to the exchangeable magazine station 17 are successively heated to the required temperature and pressed or baked under the required pressure to form a package 22.

Das Paket 22 gelangt dann auf einen nachgeschalteten Auslauf­tisch, der als Verbindungs- und Kühlstrecke 23 vom Heizkalander 21 zu einem zweiten Querschneider 24 dient. Letzterer weist ein in einer lotrechten Ebene gesteuertes Trennmesser 25 auf, dem ein oberhalb des Paketes 22 angeordneter Messerbalken 26 mit partiellen Stempeln bzw. Niederhalteleisten 29 und ein unterhalb dieses Paketes 22 liegendes Gegenmesser 27 zugeordnet sind. In diesem zweiten Querschneider 24 werden die angeförderten Pakete 22 im Bedarfsfalle beschnitten und dann in Streifen 16 geschnit­ten, deren Breite, der schlussendlichen Wabenhöhe entsprechend, frei einstellbar ist. Etwaige An- und Restschnitte werden auto­matisch ausgeworfen und gesammelt.The package 22 then arrives at a downstream outlet table, which serves as a connecting and cooling section 23 from the heating calender 21 to a second cross cutter 24. The latter has a cutting knife 25 which is controlled in a vertical plane and with which a knife bar 26 arranged above the package 22 also coexists partial stamps or hold-down strips 29 and a counter knife 27 located below this package 22 are assigned. In this second cross cutter 24, the delivered packages 22 are trimmed if necessary and then cut into strips 16, the width of which, according to the final honeycomb height, can be freely adjusted. Any first and remaining cuts are automatically ejected and collected.

Unterhalb von dem zweiten Querschneider 24 ist ein eine Stauvor­richtung bildender Preßkanal 28 angeordnet, der an seinem Ein­tritt einen den jeweils zuletzt abgetrennten Streifen 16 in den Preßkanal hineindrückenden partiellen Stempel 29 sowie in dessen Frei- bzw. Zwischenräume eingreifende, z.B. elektropneumatisch oder elektromagnetisch aussteuerbare Rückhalter 30 aufweist für die bereits im Preßkanal 28 befindlichen Streifen 16. Der Preß­kanal 28 wird von einer Heizeinrichtung 31 zum Verkleben der Streifen 16 miteinander beaufschlagt. Das so gebildete endlose Wabenband 32 durchläuft anschließend eine Kühleinrichtung 33.Arranged beneath the second cross cutter 24 is a press channel 28 forming a stowage device, which at its entry has a partial stamp 29 which presses the last cut strip 16 into the press channel and engages in its free spaces, e.g. Retainer 30, which can be controlled electro-pneumatically or electromagnetically, has strips 16 for the strips 16 already in the press channel 28. The press channel 28 is acted upon by a heating device 31 for gluing the strips 16 together. The endless honeycomb belt 32 thus formed then passes through a cooling device 33.

Der Vorschub im Preßkanal 28 kann kontinuierlich oder aber schrittweise erfolgen. Der vorzugsweise bogenförmig ausgebildete Preßkanal 28 übt auf den vorgeförderten Strang einen so hohen Gegendruck aus, daß die übereinander gestapelten Streifen 16 unter Hitze und Druck fest miteinander verklebt werden.The feed in the press channel 28 can take place continuously or in steps. The preferably arcuate press channel 28 exerts such a high back pressure on the pre-conveyed strand that the strips 16 stacked one above the other are firmly bonded to one another under heat and pressure.

Claims (16)

1. Verfahren zur Herstellung eines endlosen, aus flach neben­einanderstehenden, partiell miteinander verklebten Strei­fen (16) bestehenden Wabenbandes (32), das durch Recken in Bandlängsrichtung zu einer Wabe auseinandergezogen werden kann, wobei von mehreren Coils (2) Folienbahnen (3) jeweils kontinuierlich abgezogen, auf einer Seite mit in Bahnlängs­richtung parallel zueinander verlaufenden, gleichen Abstand voneinander aufweisenden Leimstreifen (10) versehen und an­schließend übereinander gelegt werden, wobei die Leimstrei­fen (10) der einen Folienbahn (3) gegenüber denen der darü­ber bzw. darunter liegenden Folienbahn (3) um jeweils einen halben Streifenabstand versetzt angeordnet sind, worauf dann das mehrlagige Folienband zur gegenseitigen Fixierung seiner einzelnen Lagen durch Druck und/oder Temperatur behandelt und schließlich quer in Streifen (16) gewünschter Breite aufgeteilt wird, die übereinander gestapelt und unter Druck zu dem endlosen Wabenband (32) verpreßt werden, dadurch ge­kennzeichnet, daß die genannte Beleimung vorzugsweise mit Hotmelt erfolgt, der streifenförmig auf jede Folienbahn (3) aufgedüst wird, und daß von dem in Förderrichtung (5) vorn liegenden Ende des Folienbandes nach der genannten Fixierung seiner Lagen Folienbahnabschnitte gleicher Länge abgetrennt werden, die hinsichtlich ihrer Länge einem Mehrfachen der Streifenbreite entsprechen und zu Zwischenstapeln überein­ander geschichtet werden, die einen Pufferspeicher bilden und einzeln zu Paketen (22) verpreßt werden, die nacheinan­der in die genannten Streifen (16) aufgeteilt werden, die unter Wärmezufuhr zu dem genannten Wabenband (32) verpreßt werden.1. A process for the production of an endless honeycomb tape (32) consisting of flat, side-by-side, partially glued strips (16), which can be pulled apart into a honeycomb by stretching in the longitudinal direction of the tape, with several coils (2) of film webs (3) each continuously peeled off, provided on one side with glue strips (10) which are parallel to one another and have the same spacing from one another and are then placed one above the other, the glue strips (10) of one film web (3) opposite those of the film web (3 ) are arranged offset by half a strip spacing, whereupon the multilayer film strip is treated by pressure and / or temperature to fix its individual layers to one another and is finally divided transversely into strips (16) of the desired width, which are stacked one above the other and under pressure to form the endless one Honeycomb tape (32) are pressed, thereby ge indicates that the said gluing is preferably carried out with hotmelt, which is sprayed in strips onto each film web (3), and that from the end of the film strip lying forward in the conveying direction (5) after said fixing its layers of film web sections of the same length are separated, the length of which corresponds to a multiple of the strip width and are stacked on top of one another to form interim stacks which form a buffer store and are individually pressed into packages (22) which are successively divided into said strips (16), which are pressed while supplying heat to said honeycomb belt (32). 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Verarbeitung von nur zwei Coils (2) erfolgt.2. The method according to claim 1, characterized in that the processing of only two coils (2) is carried out. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die genannte Beleimung jeweils auf der oben liegenden Folienbahnseite erfolgt.3. The method according to claim 1 or 2, characterized in that said gluing takes place in each case on the film web side lying above. 4. Verfahren nach Anspruch 1, 2 oder 3, dadurch gekennzeichnet, daß die Folienbahnen (3) nach ihrer Beleimung gekühlt wer­den.4. The method according to claim 1, 2 or 3, characterized in that the film webs (3) are cooled after their gluing. 5. Verfahren nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß das Verpressen der Stapel (20) zu Pake­ten (22) nach der Magazinierung unter Wärmezufuhr erfolgt.5. The method according to any one of the preceding claims, characterized in that the pressing of the stacks (20) into packets (22) is carried out after the magazine with heat. 6. Verfahren nach Anspruch 5, dadurch gekennzeichnet, daß jedes Paket (22) vor seiner Aufteilung in Streifen (16) abgekühlt wird.6. The method according to claim 5, characterized in that each packet (22) is cooled before being divided into strips (16). 7. Vorrichtung zur Durchführung des Verfahrens nach einem der vorhergehenden Ansprüche, gekennzeichnet durch folgende Merkmale: a) Vorschubeinrichtungen für den kontinuierlichen Vor­schub der beiden Folienbahnen (3); b) für jede Folienbahn (3) ist ein Hotmelt-Auftragswerk (7) vorgesehen, das zumindest eine Schlitzdüse (8) mit auswechselbarer Schlitzmaske (9) zur Erzeugung der Leimstreifen (10) aufweist; c) eine Kaschierstation (13) zur gegenseitigen Fixierung der einzelnen Lagen des Folienbandes; d) ein erster Querschneider (15) zum Abtrennen der Folien­bahnabschnitte; e) eine Wechselmagazinierstation (17) als Pufferspeicher für die aus den Folienbahnabschnitten gebildeten Stapel (20); f) ein zweiter Querschneider (24) zum Abtrennen der Strei­fen (16); g) ein unterhalb vom zweiten Querschneider (24) angeordne­ter, eine Stauvorrichtung bildender Preßkanal (28), der an seinem Eintritt einen den jeweils zuletzt abgetrenn­ten Streifen (16) in den Preßkanal hineindrückenden partiellen Stempel (29) sowie in dessen Freiräume ein­greifende, aussteuerbare Rückhalter (30) für die be­reits im Preßkanal (28) befindlichen Streifen (16) auf­weist; h) eine den Preßkanal (28) beaufschlagende Heizeinrich­tung (31) zum Verkleben der Streifen (16) miteinander; i) eine nachgeschaltete Kühleinrichtung (33) für das end­lose Wabenband (32); 7. Device for carrying out the method according to one of the preceding claims, characterized by the following features: a) feed devices for the continuous feed of the two film webs (3); b) a hot melt applicator unit (7) is provided for each film web (3) and has at least one slot nozzle (8) with an exchangeable slot mask (9) for producing the glue strips (10); c) a laminating station (13) for mutually fixing the individual layers of the film strip; d) a first cross cutter (15) for severing the film web sections; e) an interchangeable magazine station (17) as a buffer store for the stacks (20) formed from the film web sections; f) a second cross cutter (24) for severing the strips (16); g) a press channel (28) arranged below the second cross cutter (24) and forming a stowage device, which at its entry has a partial stamp (29) which presses the last severed strip (16) into the press channel as well as controllable retainers which engage in its free spaces (30) for the strips (16) already located in the press channel (28); h) a heating device (31) acting on the press channel (28) for gluing the strips (16) to one another; i) a downstream cooling device (33) for the endless honeycomb belt (32); 8. Vorrichtung nach Anspruch 7, dadurch gekennzeichnet, daß je­des Hotmelt-Auftragswerk (7) auf der der Schlitzdüse (8) ab­gewandten Seite der Folienbahn (3) Stützwalzen aufweist.8. The device according to claim 7, characterized in that each hot melt applicator (7) on the slot nozzle (8) facing away from the film web (3) has support rollers. 9. Vorrichtung nach Anspruch 7 oder 8, gekennzeichnet durch eine Kühl- und Zugstation (11) für die beleimten Folien­bahnen (3).9. The device according to claim 7 or 8, characterized by a cooling and pulling station (11) for the glued film webs (3). 10. Vorrichtung nach Anspruch 9, dadurch gekennzeichnet, daß die Kühlstation (11) durch Kühlwalzen (12) gebildet wird, über die die Folienbahn (3) geführt ist.10. The device according to claim 9, characterized in that the cooling station (11) is formed by cooling rollers (12) over which the film web (3) is guided. 11. Vorrichtung nach einem der Ansprüche 7 bis 10, dadurch ge­kennzeichnet, daß die Kaschierstation (13) durch ein Walzen­paar (14) gebildet ist, durch das das doppellagige Folien­band geführt ist.11. Device according to one of claims 7 to 10, characterized in that the laminating station (13) is formed by a pair of rollers (14) through which the double-layer film strip is guided. 12. Vorrichtung nach einem der Ansprüche 7 bis 11, dadurch ge­kennzeichnet, daß der erste Querschneider (15) ein Rota­tionsquerschneider ist.12. Device according to one of claims 7 to 11, characterized in that the first cross cutter (15) is a rotary cross cutter. 13. Vorrichtung nach einem der Ansprüche 7 bis 12, dadurch ge­kennzeichnet, daß hinter der Wechselmagazinierstation (17) ein Heizkalander (21) zum Verpressen der Stapel (20) zu Pa­keten angeordnet ist.13. The device according to one of claims 7 to 12, characterized in that a heating calender (21) for compressing the stack (20) is arranged into packages behind the changing magazine station (17). 14. Vorrichtung nach Anspruch 13, dadurch gekennzeichnet, daß zwischen dem Heizkalander (21) und dem zweiten Querschnei­der (24) eine Kühlstrecke (23) für die Pakete (22) vorgese­hen ist.14. The apparatus according to claim 13, characterized in that a cooling section (23) for the packages (22) is provided between the heating calender (21) and the second cross cutter (24). 15. Vorrichtung nach einem der Ansprüche 7 bis 14, dadurch ge­kennzeichnet, daß der zweite Querschneider (24) ein in einer lotrechten Ebene gesteuertes Trennmesser (25) aufweist, dem ein oberhalb des Paketes (22) angeordneter Messerbalken (26) mit partiellen Stempeln bzw. Niederhalteleisten (29) und ein unterhalb dieses Paketes (22) liegendes Gegenmes­ser (27) zugeordnet sind.15. The device according to one of claims 7 to 14, characterized in that the second cross cutter (24) one in one Vertical level controlled cutting knife (25), to which a knife bar (26) arranged above the package (22) with partial punches or hold-down strips (29) and a counter knife (27) lying below this package (22) are assigned. 16. Vorrichtung nach einem der vorhergehenden Ansprüche, da­durch gekennzeichnet, daß die Wechselmagazinierstation (17) eine Schubladenrutsche aufweist mit zwei übereinander ange­ordneten, abwechselnd ansteuerbaren Ablageebenen (18,19).16. Device according to one of the preceding claims, characterized in that the interchangeable magazine station (17) has a drawer slide with two stacking levels (18, 19) which can be alternately controlled and are arranged one above the other.
EP89110739A 1988-06-18 1989-06-14 Method and device for the production of an endless honeycomb belt Expired - Lifetime EP0347729B1 (en)

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AT89110739T ATE75662T1 (en) 1988-06-18 1989-06-14 METHOD AND DEVICE FOR MANUFACTURING AN ENDLESS HONEYCOMB STRIP.

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DE3820718A DE3820718C1 (en) 1988-06-18 1988-06-18
DE3820718 1988-06-18

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EP (1) EP0347729B1 (en)
JP (1) JPH02111527A (en)
AT (1) ATE75662T1 (en)
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ES (1) ES2031661T3 (en)
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ES2031661T3 (en) 1992-12-16
NO892526L (en) 1989-12-19
JPH02111527A (en) 1990-04-24
DE58901314D1 (en) 1992-06-11
EP0347729B1 (en) 1992-05-06
AU3649689A (en) 1989-12-21
US4992132A (en) 1991-02-12
RU1769737C (en) 1992-10-15
NO892526D0 (en) 1989-06-16
ATE75662T1 (en) 1992-05-15
DE3820718C1 (en) 1989-05-11
AU627740B2 (en) 1992-09-03

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